ABSTRACT
Based on previous results with benzoindazolequinone (BIZQ) and 3-methylnaphtho [2,3-d]isoxazole-4,9-quinone (NIQ) derivatives, a novel series of chalcone-1,4-naphthoquinone/benzohydroquinone (CNQ and CBHQ) compounds were synthesized from 2-acetyl-5,8-dihydro-6-(4-methyl-3-pentenyl)-1,4-naphthohydroquinone. Their structures were elucidated via spectroscopy. These hybrids were assessed in vivo for their antiproliferative activity on MCF-7 breast adenocarcinoma and HT-29 colorectal carcinoma cells, revealing cytotoxicity with IC50 values between 6.0 and 110.5 µM. CBHQ hybrids 5e and 5f displayed enhanced cytotoxicity against both cell lines, whereas CNQ hybrids 6a-c and 6e exhibited higher cytotoxic activity against MCF-7 cells. Docking studies showed strong binding energies (ΔGbin) of CNQs to kinase proteins involved in carcinogenic pathways. Furthermore, our in silico analysis of drug absorption, distribution, metabolism, and excretion (ADME) properties suggests their potential as candidates for cancer pre-clinical assays.
Subject(s)
Antineoplastic Agents , Chalcones , Humans , Chalcones/pharmacology , Chalcones/chemistry , Molecular Structure , Structure-Activity Relationship , Cell Proliferation , MCF-7 Cells , Antineoplastic Agents/pharmacology , Antineoplastic Agents/chemistry , Drug Screening Assays, Antitumor , Molecular Docking Simulation , Cell Line, TumorABSTRACT
The glenohumeral joint (GHJ) is one of the most critical structures in the shoulder complex. Lesions of the superior labral anterior to posterior (SLAP) cause instability at the joint. Isolated Type II of this lesion is the most common, and its treatment is still under debate. Therefore, this study aimed to determine the biomechanical behavior of soft tissues on the anterior bands of the glenohumeral joint with an Isolated Type II SLAP lesion. Segmentation tools were used to build a 3D model of the shoulder joint from CT-scan and MRI images. The healthy model was studied using finite element analysis. Validation was conducted with a numerical model using ANOVA, and no significant differences were shown (p = 0.47). Then, an Isolated Type II SLAP lesion was produced in the model, and the joint was subjected to 30 degrees of external rotation. A comparison was made for maximum principal strains in the healthy and the injured models. Results revealed that the strain distribution of the anterior bands of the synovial capsule is similar between a healthy and an injured shoulder (p = 0.17). These results demonstrated that GHJ does not significantly deform for an Isolated Type II SLAP lesion subjected to 30-degree external rotation in abduction.
ABSTRACT
Background: Cardiovascular disease (CVD) is the leading cause of morbidity and mortality in the Americas, and hypertension is the most significant modifiable risk factor. However, hypertension control rates remain low, and CVD mortality is stagnant or rising after decades of continuing reduction. In 2016, the World Health Organization (WHO) launched the HEARTS technical package to improve hypertension control. The Pan American Health Organization (PAHO) designed the HEARTS in the Americas Initiative to improve CVD risk management, emphasizing hypertension control, to date implemented in 21 countries. Methods: To advance implementation, an interdisciplinary group of practitioners was engaged to select the key evidence-based drivers of hypertension control and to design a comprehensive scorecard to monitor their implementation at primary care health facilities (PHC). The group studied high-performing health systems that achieve high hypertension control through quality improvement programs focusing on specific process measures, with regular feedback to providers at health facilities. Findings: The final selected eight drivers were categorized into five main domains: (1) diagnosis (blood pressure measurement accuracy and CVD risk evaluation); (2) treatment (standardized treatment protocol and treatment intensification); (3) continuity of care and follow-up; (4) delivery system (team-based care, medication refill), and (5) system for performance evaluation. The drivers and recommendations were then translated into process measures, resulting in two interconnected scorecards integrated into the HEARTS in the Americas monitoring and evaluation system. Interpretation: Focus on these key hypertension drivers and resulting scorecards, will guide the quality improvement process to achieve population control goals at the participating health centers in HEARTS implementing countries. Funding: No funding to declare.
ABSTRACT
Background: Cardiovascular disease (CVD) is the leading cause of morbidity and mortality in the Americas, and hypertension is the most significant modifiable risk factor. However, hypertension control rates remain low, and CVD mortality is stagnant or rising after decades of continuing reduction. In 2016, the World Health Organization (WHO) launched the HEARTS technical package to improve hypertension control. The Pan American Health Organization (PAHO) designed the HEARTS in the Americas Initiative to improve CVD risk management, emphasizing hypertension control, to date implemented in 21 countries. Methods: To advance implementation, an interdisciplinary group of practitioners was engaged to select the key evidence-based drivers of hypertension control and to design a comprehensive scorecard to monitor their implementation at primary care health facilities (PHC). The group studied high-performing health systems that achieve high hypertension control through quality improvement programs focusing on specific process measures, with regular feedback to providers at health facilities. Findings: The final selected eight drivers were categorized into five main domains: (1) diagnosis (blood pressure measurement accuracy and CVD risk evaluation); (2) treatment (standardized treatment protocol and treatment intensification); (3) continuity of care and follow-up; (4) delivery system (team-based care, medication refill), and (5) system for performance evaluation. The drivers and recommendations were then translated into process measures, resulting in two interconnected scorecards integrated into the HEARTS in the Americas monitoring and evaluation system. Interpretation: Focus on these key hypertension drivers and resulting scorecards, will guide the quality improvement process to achieve population control goals at the participating health centers in HEARTS implementing countries.
Antecedentes: Las enfermedades cardiovasculares (ECV) son la principal causa de morbilidad y mortalidad en la Región de las Américas y la hipertensión es el factor de riesgo modificable asociado más importante. Sin embargo, las tasas de control de la hipertensión siguen siendo bajas y la mortalidad por ECV está estancada o en aumento después de décadas de reducción continua. En el 2016, la Organización Mundial de la Salud (OMS) presentó el paquete técnico HEARTS para mejorar el control de la hipertensión. La Organización Panamericana de la Salud (OPS) diseñó la iniciativa HEARTS en las Américas para mejorar el control del riesgo de ECV, que hace hincapié en el control de la hipertensión y que, hasta la fecha, se ha implementado en 21 países. Métodos: Para avanzar en la implementación, se creó un grupo interdisciplinario de profesionales de la salud con el objetivo de seleccionar los factores impulsores claves del control de la hipertensión basados en la evidencia y diseñar un método de puntuación integral para dar seguimiento a su implementación en los centros de atención de salud primaria (APS). El grupo estudió los sistemas de salud de alto desempeño que logran un control elevado de la hipertensión mediante programas de mejora de la calidad que se centran en medidas específicas con respecto a los procesos, con retroalimentación regular a los prestadores en los centros de salud. Resultados: Los ocho factores impulsores finales seleccionados se clasificaron en cinco dominios principales: 1) diagnóstico (exactitud de la medición de la presión arterial y evaluación del riesgo de ECV); 2) tratamiento (protocolo de tratamiento e intensificación del tratamiento estandarizados); 3)â¯continuidad de la atención y seguimiento; 4) sistema de prestación del tratamiento (atención basada en un trabajo en equipo, reposición de la medicación) y 5) sistema para la evaluación del desempeño. Los factores impulsores y las recomendaciones se tradujeron en medidas con respecto a los procesos, lo que llevó a dos métodos de puntuación integrados e interconectados en el sistema de seguimiento y evaluación del programa HEARTS en las Américas. Conclusiones: El enfoque que se centra en estos factores impulsores clave de la hipertensión y los métodos de puntuación resultantes servirá de guía para el proceso de mejora de la calidad con objeto de alcanzar los objetivos de control a nivel poblacional en los centros de salud participantes de los países que implementan el programa HEARTS.
ABSTRACT
Background: Cardiovascular disease (CVD) is the leading cause of morbidity and mortality in the Americas, and hypertension is the most significant modifiable risk factor. However, hypertension control rates remain low, and CVD mortality is stagnant or rising after decades of continuing reduction. In 2016, the World Health Organization (WHO) launched the HEARTS technical package to improve hypertension control. The Pan American Health Organization (PAHO) designed the HEARTS in the Americas Initiative to improve CVD risk management, emphasizing hypertension control, to date implemented in 21 countries. Methods: To advance implementation, an interdisciplinary group of practitioners was engaged to select the key evidence-based drivers of hypertension control and to design a comprehensive scorecard to monitor their implementation at primary care health facilities (PHC). The group studied high-performing health systems that achieve high hypertension control through quality improvement programs focusing on specific process measures, with regular feedback to providers at health facilities. Findings: The final selected eight drivers were categorized into five main domains: (1) diagnosis (blood pressure measurement accuracy and CVD risk evaluation); (2) treatment (standardized treatment protocol and treatment intensification); (3) continuity of care and follow-up; (4) delivery system (team-based care, medication refill), and (5) system for performance evaluation. The drivers and recommendations were then translated into process measures, resulting in two interconnected scorecards integrated into the HEARTS in the Americas monitoring and evaluation system. Interpretation: Focus on these key hypertension drivers and resulting scorecards, will guide the quality improvement process to achieve population control goals at the participating health centers in HEARTS implementing countries.
Fundamentos: As doenças cardiovasculares (DCV) são as principais causas de morbimortalidade nas Américas, e a hipertensão arterial (HÁ) é o fator de risco modificável mais importante. Porém, as taxas de controle da HA continuam baixas, e a mortalidade por DCV está estagnada ou aumentando após décadas de redução contínua. Em 2016, a Organização Mundial da Saúde (OMS) lançou o pacote de medidas técnicas HEARTS para melhorar o controle da HA. A Organização Pan-Americana da Saúde (OPAS) criou a iniciativa HEARTS nas Américas para melhorar a gestão do risco cardiovascular (RCV), com ênfase no controle da HA. Até agora, essa iniciativa foi implementada em 21 países. Métodos: Para impulsionar a implementação, recrutou-se um grupo multidisciplinar de profissionais para selecionar impulsionadores-chave do controle da HA com base em evidências e elaborar um scorecard completo para monitorar sua implementação em unidades de atenção primária à saúde (APS). O grupo estudou sistemas de saúde com alto desempenho que haviam conseguido atingir um alto nível de controle da HA por meio de programas de melhoria da qualidade focados em medidas específicas de processo, com feedback regular para os profissionais das unidades de saúde. Resultados: Os oito fatores impulsionadores incluídos na seleção final foram categorizados em cinco domínios principais: (1) diagnóstico (exatidão da medição da pressão arterial e avaliação do RCV); (2) tratamento (protocolo padronizado de tratamento e intensificação do tratamento); (3) continuidade do cuidado e acompanhamento; (4) modelo de atenção (atendimento baseado em equipe, renovação da prescrição); e (5) sistema de avaliação do desempenho. Em seguida, os impulsionadores e as recomendações foram transformados em medidas de processo, gerando dois scorecards inter-relacionados integrados ao sistema de monitoramento e avaliação da Iniciativa HEARTS nas Américas. Interpretação: O foco nesses impulsionadores-chave da HA e nos scorecards resultantes orientará o processo de melhoria da qualidade para atingir as metas de controle, em nível populacional, dos centros de saúde participantes nos países que estão implementando a iniciativa HEARTS.
ABSTRACT
[RESUMO]. Fundamentos. As doenças cardiovasculares (DCV) são as principais causas de morbimortalidade nas Américas, e a hipertensão arterial (HÁ) é o fator de risco modificável mais importante. Porém, as taxas de controle da HA continuam baixas, e a mortalidade por DCV está estagnada ou aumentando após décadas de redução contínua. Em 2016, a Organização Mundial da Saúde (OMS) lançou o pacote de medidas técnicas HEARTS para melhorar o controle da HA. A Organização Pan-Americana da Saúde (OPAS) criou a iniciativa HEARTS nas Américas para melhorar a gestão do risco cardiovascular (RCV), com ênfase no controle da HA. Até agora, essa iniciativa foi implementada em 21 países. Métodos. Para impulsionar a implementação, recrutou-se um grupo multidisciplinar de profissionais para selecionar impulsionadores-chave do controle da HA com base em evidências e elaborar um scorecard completo para monitorar sua implementação em unidades de atenção primária à saúde (APS). O grupo estudou sistemas de saúde com alto desempenho que haviam conseguido atingir um alto nível de controle da HA por meio de programas de melhoria da qualidade focados em medidas específicas de processo, com feedback regular para os profissionais das unidades de saúde. Resultados. Os oito fatores impulsionadores incluídos na seleção final foram categorizados em cinco domínios principais: (1) diagnóstico (exatidão da medição da pressão arterial e avaliação do RCV); (2) tratamento (protocolo padronizado de tratamento e intensificação do tratamento); (3) continuidade do cuidado e acompanhamento; (4) modelo de atenção (atendimento baseado em equipe, renovação da prescrição); e (5) sistema de avaliação do desempenho. Em seguida, os fatores impulsionadores e as recomendações foram transformados em medidas de processo, gerando dois scorecards inter-relacionados integrados ao sistema de monitoramento e avaliação da Iniciativa HEARTS nas Américas. Interpretação. O foco nesses impulsionadores-chave da HA e nos scorecards resultantes orientará o processo de melhoria da qualidade para atingir as metas de controle, a nível populacional, dos centros de saúde participantes nos países que estão implementando a iniciativa HEARTS.
[ABSTRACT]. Background. Cardiovascular disease (CVD) is the leading cause of morbidity and mortality in the Americas, and hypertension is the most significant modifiable risk factor. However, hypertension control rates remain low, and CVD mortality is stagnant or rising after decades of continuing reduction. In 2016, the World Health Organization (WHO) launched the HEARTS technical package to improve hypertension control. The Pan American Health Organization (PAHO) designed the HEARTS in the Americas Initiative to improve CVD risk management, emphasizing hypertension control, to date implemented in 21 countries. Methods. To advance implementation, an interdisciplinary group of practitioners was engaged to select the key evidence-based drivers of hypertension control and to design a comprehensive scorecard to monitor their implementation at primary care health facilities (PHC). The group studied high-performing health systems that achieve high hypertension control through quality improvement programs focusing on specific process measures, with regular feedback to providers at health facilities. Findings. The final selected eight drivers were categorized into five main domains: (1) diagnosis (blood pressure measurement accuracy and CVD risk evaluation); (2) treatment (standardized treatment protocol and treatment intensification); (3) continuity of care and follow-up; (4) delivery system (team-based care, medication refill), and (5) system for performance evaluation. The drivers and recommendations were then translated into process measures, resulting in two interconnected scorecards integrated into the HEARTS in the Americas monitoring and evaluation system. Interpretation. Focus on these key hypertension drivers and resulting scorecards, will guide the quality improvement process to achieve population control goals at the participating health centers in HEARTS implementing countries.
[RESUMEN]. Antecedentes. Las enfermedades cardiovasculares (ECV) son la principal causa de morbilidad y mortalidad en la Región de las Américas y la hipertensión es el factor de riesgo modificable asociado más importante. Sin embargo, las tasas de control de la hipertensión siguen siendo bajas y la mortalidad por ECV está estancada o en aumento después de décadas de reducción continua. En el 2016, la Organización Mundial de la Salud (OMS) presentó el paquete técnico HEARTS para mejorar el control de la hipertensión. La Organización Panamericana de la Salud (OPS) diseñó la iniciativa HEARTS en las Américas para mejorar el control del riesgo de ECV, que hace hincapié en el control de la hipertensión y que, hasta la fecha, se ha implementado en 21 países. Métodos. Para avanzar en la implementación, se creó un grupo interdisciplinario de profesionales de la salud con el objetivo de seleccionar los factores impulsores claves del control de la hipertensión basados en la evidencia y diseñar un método de puntuación integral para dar seguimiento a su implementación en los centros de atención de salud primaria (APS). El grupo estudió los sistemas de salud de alto desempeño que logran un control elevado de la hipertensión mediante programas de mejora de la calidad que se centran en medidas específicas con respecto a los procesos, con retroalimentación regular a los prestadores en los centros de salud. Resultados. Los ocho factores impulsores finales seleccionados se clasificaron en cinco dominios principales: 1) diagnóstico (exactitud de la medición de la presión arterial y evaluación del riesgo de ECV); 2) tratamiento (protocolo de tratamiento e intensificación del tratamiento estandarizados); 3) continuidad de la atención y seguimiento; 4) sistema de prestación del tratamiento (atención basada en un trabajo en equipo, reposición de la medicación) y 5) sistema para la evaluación del desempeño. Los factores impulsores y las recomendaciones se tradujeron en medidas con respecto a los procesos, lo que llevó a dos métodos de puntuación integrados e interconectados en el sistema de seguimiento y evaluación del programa HEARTS en las Américas. Conclusiones. El enfoque que se centra en estos factores impulsores clave de la hipertensión y los métodos de puntuación resultantes servirá de guía para el proceso de mejora de la calidad con objeto de alcanzar los objetivos de control a nivel poblacional en los centros de salud participantes de los países que implementan el programa HEARTS.
Subject(s)
Noncommunicable Diseases , Cardiovascular Diseases , Hypertension , Quality of Health Care , Americas , Noncommunicable Diseases , Cardiovascular Diseases , Hypertension , Quality of Health Care , Americas , Noncommunicable Diseases , Cardiovascular Diseases , Hypertension , Quality of Health Care , AmericasABSTRACT
[RESUMEN]. Antecedentes. Las enfermedades cardiovasculares (ECV) son la principal causa de morbilidad y mortalidad en la Región de las Américas y la hipertensión es el factor de riesgo modificable asociado más importante. Sin embargo, las tasas de control de la hipertensión siguen siendo bajas y la mortalidad por ECV está estancada o en aumento después de décadas de reducción continua. En el 2016, la Organización Mundial de la Salud (OMS) presentó el paquete técnico HEARTS para mejorar el control de la hipertensión. La Organización Panamericana de la Salud (OPS) diseñó la iniciativa HEARTS en las Américas para mejorar el control del riesgo de ECV, que hace hincapié en el control de la hipertensión y que, hasta la fecha, se ha implementado en 21 países. Métodos. Para avanzar en la implementación, se creó un grupo interdisciplinario de profesionales de la salud con el objetivo de seleccionar los factores impulsores claves del control de la hipertensión basados en la evidencia y diseñar un método de puntuación integral para dar seguimiento a su implementación en los centros de atención de salud primaria (APS). El grupo estudió los sistemas de salud de alto desempeño que logran un control elevado de la hipertensión mediante programas de mejora de la calidad que se centran en medidas específicas con respecto a los procesos, con retroalimentación regular a los prestadores en los centros de salud. Resultados. Los ocho factores impulsores finales seleccionados se clasificaron en cinco dominios principales: 1) diagnóstico (exactitud de la medición de la presión arterial y evaluación del riesgo de ECV); 2) tratamiento (protocolo de tratamiento e intensificación del tratamiento estandarizados); 3) continuidad de la atención y seguimiento; 4) sistema de prestación del tratamiento (atención basada en un trabajo en equipo, reposición de la medicación) y 5) sistema para la evaluación del desempeño. Los factores impulsores y las recomendaciones se tradujeron en medidas con respecto a los procesos, lo que llevó a dos métodos de puntuación integrados e interconectados en el sistema de seguimiento y evaluación del programa HEARTS en las Américas. Conclusiones. El enfoque que se centra en estos factores impulsores clave de la hipertensión y los métodos de puntuación resultantes servirá de guía para el proceso de mejora de la calidad con objeto de alcanzar los objetivos de control a nivel poblacional en los centros de salud participantes de los países que implementan el programa HEARTS.
[ABSTRACT]. Background. Cardiovascular disease (CVD) is the leading cause of morbidity and mortality in the Americas, and hypertension is the most significant modifiable risk factor. However, hypertension control rates remain low, and CVD mortality is stagnant or rising after decades of continuing reduction. In 2016, the World Health Organization (WHO) launched the HEARTS technical package to improve hypertension control. The Pan American Health Organization (PAHO) designed the HEARTS in the Americas Initiative to improve CVD risk management, emphasizing hypertension control, to date implemented in 21 countries. Methods. To advance implementation, an interdisciplinary group of practitioners was engaged to select the key evidence-based drivers of hypertension control and to design a comprehensive scorecard to monitor their implementation at primary care health facilities (PHC). The group studied high-performing health systems that achieve high hypertension control through quality improvement programs focusing on specific process measures, with regular feedback to providers at health facilities. Findings. The final selected eight drivers were categorized into five main domains: (1) diagnosis (blood pressure measurement accuracy and CVD risk evaluation); (2) treatment (standardized treatment protocol and treatment intensification); (3) continuity of care and follow-up; (4) delivery system (team-based care, medication refill), and (5) system for performance evaluation. The drivers and recommendations were then translated into process measures, resulting in two interconnected scorecards integrated into the HEARTS in the Americas monitoring and evaluation system. Interpretation. Focus on these key hypertension drivers and resulting scorecards, will guide the quality improvement process to achieve population control goals at the participating health centers in HEARTS implementing countries.
[RESUMO]. Fundamentos. As doenças cardiovasculares (DCV) são as principais causas de morbimortalidade nas Américas, e a hipertensão arterial (HÁ) é o fator de risco modificável mais importante. Porém, as taxas de controle da HA continuam baixas, e a mortalidade por DCV está estagnada ou aumentando após décadas de redução contínua. Em 2016, a Organização Mundial da Saúde (OMS) lançou o pacote de medidas técnicas HEARTS para melhorar o controle da HA. A Organização Pan-Americana da Saúde (OPAS) criou a iniciativa HEARTS nas Américas para melhorar a gestão do risco cardiovascular (RCV), com ênfase no controle da HA. Até agora, essa iniciativa foi implementada em 21 países. Métodos. Para impulsionar a implementação, recrutou-se um grupo multidisciplinar de profissionais para selecionar impulsionadores-chave do controle da HA com base em evidências e elaborar um scorecard completo para monitorar sua implementação em unidades de atenção primária à saúde (APS). O grupo estudou sistemas de saúde com alto desempenho que haviam conseguido atingir um alto nível de controle da HA por meio de programas de melhoria da qualidade focados em medidas específicas de processo, com feedback regular para os profissionais das unidades de saúde. Resultados. Os oito fatores impulsionadores incluídos na seleção final foram categorizados em cinco domínios principais: (1) diagnóstico (exatidão da medição da pressão arterial e avaliação do RCV); (2) tratamento (protocolo padronizado de tratamento e intensificação do tratamento); (3) continuidade do cuidado e acompanhamento; (4) modelo de atenção (atendimento baseado em equipe, renovação da prescrição); e (5) sistema de avaliação do desempenho. Em seguida, os impulsionadores e as recomendações foram transformados em medidas de processo, gerando dois scorecards inter-relacionados integrados ao sistema de monitoramento e avaliação da Iniciativa HEARTS nas Américas. Interpretação. O foco nesses impulsionadores-chave da HA e nos scorecards resultantes orientará o processo de melhoria da qualidade para atingir as metas de controle, em nível populacional, dos centros de saúde participantes nos países que estão implementando a iniciativa HEARTS.
Subject(s)
Noncommunicable Diseases , Cardiovascular Diseases , Hypertension , Quality of Health Care , Americas , Noncommunicable Diseases , Cardiovascular Diseases , Hypertension , Quality of Health Care , Americas , Noncommunicable Diseases , Cardiovascular Diseases , Hypertension , Quality of Health CareABSTRACT
BACKGROUND: Machine learning is a useful tool for predicting medical outcomes. This study aimed to develop a machine learning-based preoperative score to predict cardiac surgical operative mortality. METHODS: We developed various models to predict cardiac operative mortality using machine learning techniques and compared each model to European System for Cardiac Operative Risk Evaluation-II (EuroSCORE-II) using the area under the receiver operating characteristic (ROC) and precision-recall (PR) curves (ROC AUC and PR AUC) as performance metrics. The model calibration in our population was also reported with all models and in high-risk groups for gradient boosting and EuroSCORE-II. This study is a retrospective cohort based on a prospectively collected database from July 2008 to April 2018 from a single cardiac surgical center in Bogotá, Colombia. RESULTS: Model comparison consisted of hold-out validation: 80% of the data were used for model training, and the remaining 20% of the data were used to test each model and EuroSCORE-II. Operative mortality was 6.45% in the entire database and 6.59% in the test set. The performance metrics for the best machine learning model, gradient boosting (ROC: 0.755; PR: 0.292), were higher than those of EuroSCORE-II (ROC: 0.716, PR: 0.179), with a P value of .318 for the AUC of the ROC and .137 for the AUC of the PR. CONCLUSIONS: The gradient boosting model was more precise than EuroSCORE-II in predicting mortality in our population based on ROC and PR analyses, although the difference was not statistically significant.
Subject(s)
Cardiac Surgical Procedures/mortality , Machine Learning , Aged , Aged, 80 and over , Female , Humans , Latin America , Male , Middle Aged , Retrospective StudiesABSTRACT
RESUMO Fundamentos. As doenças cardiovasculares (DCV) são as principais causas de morbimortalidade nas Américas, e a hipertensão arterial (HÁ) é o fator de risco modificável mais importante. Porém, as taxas de controle da HA continuam baixas, e a mortalidade por DCV está estagnada ou aumentando após décadas de redução contínua. Em 2016, a Organização Mundial da Saúde (OMS) lançou o pacote de medidas técnicas HEARTS para melhorar o controle da HA. A Organização Pan-Americana da Saúde (OPAS) criou a iniciativa HEARTS nas Américas para melhorar a gestão do risco cardiovascular (RCV), com ênfase no controle da HA. Até agora, essa iniciativa foi implementada em 21 países. Métodos. Para impulsionar a implementação, recrutou-se um grupo multidisciplinar de profissionais para selecionar impulsionadores-chave do controle da HA com base em evidências e elaborar um scorecard completo para monitorar sua implementação em unidades de atenção primária à saúde (APS). O grupo estudou sistemas de saúde com alto desempenho que haviam conseguido atingir um alto nível de controle da HA por meio de programas de melhoria da qualidade focados em medidas específicas de processo, com feedback regular para os profissionais das unidades de saúde. Resultados. Os oito fatores impulsionadores incluídos na seleção final foram categorizados em cinco domínios principais: (1) diagnóstico (exatidão da medição da pressão arterial e avaliação do RCV); (2) tratamento (protocolo padronizado de tratamento e intensificação do tratamento); (3) continuidade do cuidado e acompanhamento; (4) modelo de atenção (atendimento baseado em equipe, renovação da prescrição); e (5) sistema de avaliação do desempenho. Em seguida, os fatores impulsionadores e as recomendações foram transformados em medidas de processo, gerando dois scorecards inter-relacionados integrados ao sistema de monitoramento e avaliação da Iniciativa HEARTS nas Américas. Interpretação. O foco nesses impulsionadores-chave da HA e nos scorecards resultantes orientará o processo de melhoria da qualidade para atingir as metas de controle, a nível populacional, dos centros de saúde participantes nos países que estão implementando a iniciativa HEARTS.
ABSTRACT Background. Cardiovascular disease (CVD) is the leading cause of morbidity and mortality in the Americas, and hypertension is the most significant modifiable risk factor. However, hypertension control rates remain low, and CVD mortality is stagnant or rising after decades of continuing reduction. In 2016, the World Health Organization (WHO) launched the HEARTS technical package to improve hypertension control. The Pan American Health Organization (PAHO) designed the HEARTS in the Americas Initiative to improve CVD risk management, emphasizing hypertension control, to date implemented in 21 countries. Methods. To advance implementation, an interdisciplinary group of practitioners was engaged to select the key evidence-based drivers of hypertension control and to design a comprehensive scorecard to monitor their implementation at primary care health facilities (PHC). The group studied high-performing health systems that achieve high hypertension control through quality improvement programs focusing on specific process measures, with regular feedback to providers at health facilities. Findings. The final selected eight drivers were categorized into five main domains: (1) diagnosis (blood pressure measurement accuracy and CVD risk evaluation); (2) treatment (standardized treatment protocol and treatment intensification); (3) continuity of care and follow-up; (4) delivery system (team-based care, medication refill), and (5) system for performance evaluation. The drivers and recommendations were then translated into process measures, resulting in two interconnected scorecards integrated into the HEARTS in the Americas monitoring and evaluation system. Interpretation. Focus on these key hypertension drivers and resulting scorecards, will guide the quality improvement process to achieve population control goals at the participating health centers in HEARTS implementing countries.
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ABSTRACT
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ABSTRACT Background. Cardiovascular disease (CVD) is the leading cause of morbidity and mortality in the Americas, and hypertension is the most significant modifiable risk factor. However, hypertension control rates remain low, and CVD mortality is stagnant or rising after decades of continuing reduction. In 2016, the World Health Organization (WHO) launched the HEARTS technical package to improve hypertension control. The Pan American Health Organization (PAHO) designed the HEARTS in the Americas Initiative to improve CVD risk management, emphasizing hypertension control, to date implemented in 21 countries. Methods. To advance implementation, an interdisciplinary group of practitioners was engaged to select the key evidence-based drivers of hypertension control and to design a comprehensive scorecard to monitor their implementation at primary care health facilities (PHC). The group studied high-performing health systems that achieve high hypertension control through quality improvement programs focusing on specific process measures, with regular feedback to providers at health facilities. Findings. The final selected eight drivers were categorized into five main domains: (1) diagnosis (blood pressure measurement accuracy and CVD risk evaluation); (2) treatment (standardized treatment protocol and treatment intensification); (3) continuity of care and follow-up; (4) delivery system (team-based care, medication refill), and (5) system for performance evaluation. The drivers and recommendations were then translated into process measures, resulting in two interconnected scorecards integrated into the HEARTS in the Americas monitoring and evaluation system. Interpretation. Focus on these key hypertension drivers and resulting scorecards, will guide the quality improvement process to achieve population control goals at the participating health centers in HEARTS implementing countries.
RESUMO Fundamentos. As doenças cardiovasculares (DCV) são as principais causas de morbimortalidade nas Américas, e a hipertensão arterial (HÁ) é o fator de risco modificável mais importante. Porém, as taxas de controle da HA continuam baixas, e a mortalidade por DCV está estagnada ou aumentando após décadas de redução contínua. Em 2016, a Organização Mundial da Saúde (OMS) lançou o pacote de medidas técnicas HEARTS para melhorar o controle da HA. A Organização Pan-Americana da Saúde (OPAS) criou a iniciativa HEARTS nas Américas para melhorar a gestão do risco cardiovascular (RCV), com ênfase no controle da HA. Até agora, essa iniciativa foi implementada em 21 países. Métodos. Para impulsionar a implementação, recrutou-se um grupo multidisciplinar de profissionais para selecionar impulsionadores-chave do controle da HA com base em evidências e elaborar um scorecard completo para monitorar sua implementação em unidades de atenção primária à saúde (APS). O grupo estudou sistemas de saúde com alto desempenho que haviam conseguido atingir um alto nível de controle da HA por meio de programas de melhoria da qualidade focados em medidas específicas de processo, com feedback regular para os profissionais das unidades de saúde. Resultados. Os oito fatores impulsionadores incluídos na seleção final foram categorizados em cinco domínios principais: (1) diagnóstico (exatidão da medição da pressão arterial e avaliação do RCV); (2) tratamento (protocolo padronizado de tratamento e intensificação do tratamento); (3) continuidade do cuidado e acompanhamento; (4) modelo de atenção (atendimento baseado em equipe, renovação da prescrição); e (5) sistema de avaliação do desempenho. Em seguida, os impulsionadores e as recomendações foram transformados em medidas de processo, gerando dois scorecards inter-relacionados integrados ao sistema de monitoramento e avaliação da Iniciativa HEARTS nas Américas. Interpretação. O foco nesses impulsionadores-chave da HA e nos scorecards resultantes orientará o processo de melhoria da qualidade para atingir as metas de controle, em nível populacional, dos centros de saúde participantes nos países que estão implementando a iniciativa HEARTS.
ABSTRACT
Sepsis is a major cause of death following a traumatic injury. As a life-threatening medical emergency, it is defined as the body's extreme response to an infection. Without timely treatment, sepsis can rapidly lead to tissue damage, and organ failure The capacity to limit tissue damage through metabolic adaptation and repair processes is associated with an excessive immune response of the host. It is important to make an early prediction of sepsis, based on the quick Sepsis associated Organ Failure Assessment Score (qSOFA), so an accurate treatment can be initiated reducing the morbidity and mortality at the emergency and UCI services. Many factors increase the rate of complications and the development of sepsis in a trauma patient, representing a challenge to orthopedic surgeons. Several early biomarkers that help to identify and predict the inflammatory and immune responses of the host going through polytrauma and sepsis have been studied; procalcitonin (PCT), C-reactive protein (CRP), glycosylated hemoglobin (HbA1c), the Neutrophil/lymphocyte ratio (NLR), Interleukin-17 (IL-17), Caspase-1, Vanin-1, High-density lipoproteins (HDL), and the Thrombin-activable fibrinolysis inhibitor (TAFI). Once sepsis is diagnosed, treatment must be immediately initiated with an appropriate empiric antimicrobial, an all-purpose supporting treatment, and metabolic control, followed by the specific antibiotic therapy based on blood culture. Since the participation of sepsis in polytrauma has been recognized as a key event in the outcome of patients at the ICU, the ability of the specialist to early recognize a septic process has become a key feature to reduce mortality and improve clinical prognosis.
Subject(s)
Sepsis , Wounds and Injuries , Biomarkers , C-Reactive Protein/analysis , Humans , Procalcitonin , Prognosis , Sepsis/complications , Wounds and Injuries/complicationsABSTRACT
The World Health Organization (WHO) Global Hearts Initiative offers technical packages to reduce the burden of cardiovascular diseases through population-wide and targeted health services interventions. The Pan American Health Organization (PAHO) has led implementation of the HEARTS in the Americas Initiative since 2016. The authors mapped the developmental stages, barriers, and facilitators to implementation among the 371 primary health care centers in the participating 12 countries. The authors used the qualitative method of document review to examine cumulative country reports, technical meeting notes, and reports to regional stakeholders. Common implementation barriers include segmentation of health systems, overcoming health care professionals' scope of practice legal restrictions, and lack of health information systems limiting operational evaluation and quality improvement mechanisms. Main implementation facilitators include political support from ministries of health and leading scientific societies, PAHO's role as a regional catalyst to implementation, stakeholder endorsement demonstrated by incorporating HEARTS into official documents, and having a health system oriented to primary health care. Key lessons include the need for political commitment and cultivating on-the-ground leadership to initiate a shift in hypertension care delivery, accompanied by specific progress in the development of standardized treatment protocols and a set of high-quality medicines. By systematizing an implementation strategy to ease integration of interventions into delivery processes, the program strengthened technical leadership and ensured sustainability. These study findings will aid the regional approach by providing a staged planning model that incorporates lessons learned. A systematic approach to implementation will enhance equity, efficiency, scale-up, and sustainability, and ultimately improve population hypertension control.
Subject(s)
Hypertension , Americas , Humans , Hypertension/epidemiology , Hypertension/prevention & control , Pan American Health Organization , Qualitative Research , World Health OrganizationABSTRACT
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Subject(s)
Humans , Lupus Erythematosus, Systemic/therapy , Lupus Nephritis/therapy , Renal Dialysis/methods , Peritoneal Dialysis/methods , Practice Guidelines as Topic , Mexico/epidemiologyABSTRACT
BACKGROUND: Symptomatic urinary tract infection (UTI) is the most common infectious complication in renal transplant recipients (RTRs). Fosfomycin (FOS) is an attractive alternative for prophylaxis because it does not interact with immunosuppressants; although 90% is excreted unchanged in the urine, it does not require adjustment for renal function for single dose prophylaxis. METHODS: RTRs were recruited into this randomized, double-blind, placebo-controlled trial. Participants were randomized (1:1) to receive one 4 g dose of FOS disodium intravenously 3 h (FOS group) or placebo (placebo group) before placement and removal of a urinary catheter and before removal of a double-J ureteral stent. All participants received prophylaxis with trimethoprim/sulfamethoxazole. The main outcome was a comparison of the mean number of symptomatic UTI and asymptomatic bacteriuria (AB) episodes per patient during a 7-week follow-up period. The study was registered at ClinicalTrials.gov, NTC03235947. RESULTS: Eighty-two participants were included (41 in the FOS group and 41 in placebo group). The mean number of AB or symptomatic UTI episodes per patient was lower in the FOS group [intention-to-treat (ITT) 0.29 versus 0.60, P = 0.04]. The incidence of symptomatic UTI was lower in the FOS group (ITT, 7.3% versus 36.6%, P = 0.001), and there was no difference in the incidence of AB between both groups. The incidence of adverse events was similar in both groups. CONCLUSIONS: FOS addition is an effective and safe strategy to reduce the number of symptomatic UTIs during the first 7 weeks after renal transplant.
Subject(s)
Anti-Bacterial Agents/therapeutic use , Bacteriuria/drug therapy , Fosfomycin/therapeutic use , Kidney Transplantation/adverse effects , Perioperative Care , Urinary Tract Infections/drug therapy , Adult , Bacteriuria/etiology , Bacteriuria/pathology , Double-Blind Method , Female , Humans , Male , Prognosis , Transplant Recipients , Urinary Tract Infections/etiology , Urinary Tract Infections/pathologyABSTRACT
BACKGROUND AND AIMS: Glomerular filtration rate (GFR) measurement in patients with liver cirrhosis (LC) is the ideal method for adequate evaluation of kidney function. However, it is invasive, costly, and not widely accessible. Moreover, GFR estimation in patients with cirrhosis has been inaccurate. The aim of the present study was to evaluate and validate the recently described Royal Free Hospital (RFH) formula in a Hispanic cohort of patients with LC and compare it with other formulas, including the CKD-EPI cystatin C equation. METHODS: GFR was measured through the renal clearance of Tc-99m DTPA; it was cross-sectionally evaluated and compared with GFRs that were estimated utilizing the following formulas: RFH, Cockcroft-Gault, 6-variable Modification of Diet in Renal Disease-6, CKD-EPI cystatin C, CKD-EPI Creatinine, and CKD-EPI Cystatin C-Creatinine. RESULTS: We included 76 patients (53% women). The mean measured GFR in the entire cohort was 64 ml/min/1.73m2; 54% of the patients had a GFR < 60 ml/min/1.73 m2 at the time of evaluation. The RFH formula and the CKD-EPI cystatin C formula showed the best performance, with a p30 of 62% and 59%, respectively. All formulas performed poorly when GFR was < 60 ml/min/1.73 m2. CONCLUSIONS: The RFH formula showed a better performance than the other formulas based on serum creatinine in a Hispanic population with LC. There was no difference in performance between the RFH formula and the CKD-EPI cystatin C formula.
Subject(s)
Glomerular Filtration Rate/physiology , Kidney Diseases/diagnosis , Kidney Function Tests/methods , Liver Cirrhosis/physiopathology , Cohort Studies , Creatinine/blood , Cross-Sectional Studies , Cystatin C/metabolism , Female , Humans , Kidney Diseases/physiopathology , Male , Mexico , Middle Aged , Retrospective StudiesABSTRACT
Abstract Background and Aims Glomerular filtration rate (GFR) measurement in patients with liver cirrhosis (LC) is the ideal method for adequate evaluation of kidney function. However, it is invasive, costly, and not widely accessible. Moreover, GFR estimation in patients with cirrhosis has been inaccurate. The aim of the present study was to evaluate and validate the recently described Royal Free Hospital (RFH) formula in a Hispanic cohort of patients with LC and compare it with other formulas, including the CKD-EPI cystatin C equation. Methods GFR was measured through the renal clearance of Tc-99m DTPA; it was cross-sectionally evaluated and compared with GFRs that were estimated utilizing the following formulas: RFH, Cockcroft-Gault, 6-variable Modification of Diet in Renal Disease-6, CKD-EPI cystatin C, CKD-EPI Creatinine, and CKD-EPI Cystatin C-Creatinine. Results We included 76 patients (53% women). The mean measured GFR in the entire cohort was 64 ml/min/1.73m2; 54% of the patients had a GFR < 60 ml/min/1.73 m2 at the time of evaluation. The RFH formula and the CKD-EPI cystatin C formula showed the best performance, with a p30 of 62% and 59%, respectively. All formulas performed poorly when GFR was < 60 ml/min/1.73 m2. Conclusions The RFH formula showed a better performance than the other formulas based on serum creatinine in a Hispanic population with LC. There was no difference in performance between the RFH formula and the CKD-EPI cystatin C formula.
Subject(s)
Humans , Male , Female , Middle Aged , Glomerular Filtration Rate/physiology , Kidney Diseases/diagnosis , Kidney Function Tests/methods , Liver Cirrhosis/physiopathology , Cross-Sectional Studies , Retrospective Studies , Cohort Studies , Creatinine/blood , Cystatin C/metabolism , Kidney Diseases/physiopathology , MexicoABSTRACT
Objetivos: Estudiar las características clínicas y desenlaces de los pacientes con lupus eritematoso sistémico (LES) intervenidos de cirugía cardiaca. Métodos: Se realizó un estudio retrospectivo de 30 pacientes con LES y cirugía cardiaca en un solo centro. Se registraron comorbilidades, características demográficas, clínicas, serológicas, riesgo cardiovascular, tratamiento, tipo de cirugía, complicaciones postoperatorias, mortalidad e histología. Resultados: La duración de LES al momento de la cirugía fue de 2 años. El procedimiento más frecuente fue recambio valvular (53%), seguido de ventana pericárdica (37%). Al menos una complicación postoperatoria se presentó en el 63% (principalmente infecciones). Un pinzamiento aórtico≥76 min se asoció con al menos una complicación (OR 6,4; IC 95% 1,1-35,4, p=0,03). La mortalidad temprana ocurrió en 5 pacientes (17%) y tardía en 3 (10%); siendo las causas principales sepsis e insuficiencia cardiaca. La actividad de la enfermedad se asoció a la realización de ventana pericárdica (OR 12,6; IC 95% 1,9-79; p=0,007), presencia de linfopenia≤1.200 (OR 10,1; IC 95% 1,05-97; p=0,04), edad≤30 años (OR 7,7; IC 95% 1,2-46,3; p=0,02) y NYHA clase III (OR 7,0; IC 95% 1,1-42, p=0,03). El desarrollo de infección postoperatoria se asoció con estancia hospitalaria≥2 semanas (OR 54,9; IC 95% 5,0-602,1; p=0,001), estancia en UCI≥10 días (OR 20; IC 95% 1,6-171,7, p=0,01), duración de ventilación mecánica ≥ 5 días (OR 16,9, IC 95% 1,5-171,7, p = 0,01) y PSAP≥50mmHg (OR 7,8; IC 95% 1,4-41,2; p=0,01). Conclusiones: La cirugía cardiaca en LES se asocia a alta morbimortalidad
Objectives: To study the clinical characteristics and outcomes in systemic lupus erythematosus (SLE) patients who underwent cardiac surgery. Methods: Retrospective analysis of 30 SLE patients who underwent cardiac surgery at a single center. Demographics, comorbidities, clinical and serologic characteristics, cardiovascular risk scores and treatment were recorded. Type of surgery, postoperative complications, mortality and histology were analyzed. Results: Disease duration at surgery was 2 years. Valve replacement was the procedure most frequently performed (53%), followed by pericardial window (37%). At least one postoperative complication developed in 63% (mainly infections). An aortic cross-clamp time≥76minutes was associated with at least one postoperative complication (OR 6.4, 95% CI 1.1-35.4, p=.03). Early death occurred in 5 patients (17%) and late in 3 (10%); main causes were sepsis and heart failure. Disease activity was associated with pericardial window (OR 12.6, 95% CI 1.9-79, p=.007); lymphopenia≤1.200 (OR 10.1, 95% CI 1.05-97, p=.04); age≤30 years (OR 7.7, 95% CI 1.2-46.3, p=.02); and New York Heart Association class III (OR 7.0, 95% CI 1.1-42, p=.03). Postoperative infection was associated with length of hospital stay≥2 weeks (OR 54.9, 95% CI 5.0-602.1, p=.001); intensive care unit stay≥10 days (OR 20, 95% CI 1.6-171.7, p=.01); duration of mechanical ventilation≥5 days (OR 16.9, 95% CI 1.5-171.7, p=.01); and pulmonary artery systolic pressure≥50mmHg (OR 7.8, 95% CI 1.4-41.2, p=.01). Conclusions: Cardiac surgery in SLE confers high morbidity and mortality. SLE-specific preoperative risk scores should be designed to identify prognostic factors
Subject(s)
Humans , Male , Female , Adolescent , Young Adult , Adult , Middle Aged , Cardiac Surgical Procedures/statistics & numerical data , Lupus Erythematosus, Systemic/complications , Heart Diseases/surgery , Retrospective Studies , Heart Diseases/complications , Comorbidity , Risk Factors , Glucocorticoids/adverse effects , Antibodies, Anticardiolipin/analysis , Pericarditis/epidemiology , Heart Valve Diseases/chemically induced , Patient Outcome AssessmentABSTRACT
Antecedentes: El objetivo de este estudio fue describir una serie de casos de 13 pacientes hispanos con síndrome de Sjögren primario (SSp) y compromiso renal confirmado mediante biopsia. Métodos: Describimos las características clínicas, séricas e histológicas, y el pronóstico de un grupo de pacientes con SSp y compromiso renal confirmado mediante biopsia, tratados en 2 unidades nefrológicas de referencia de la Ciudad de México. Resultados: Se practicó biopsia renal (BR) a 13 pacientes con SSp, durante un período de 27 años. La mediana de duración entre el diagnóstico de SSp y la BR fue de 13,9 meses. Siete pacientes (54%) tenían glomerulonefritis y 6 (46%), nefritis tubulointersticial. Todos los pacientes fueron tratados con corticosteroides y/o inmunosupresores. Ocho pacientes (62%) permanecieron estables o con mejoría de su función renal en una mediana de seguimiento de 12 meses. Conclusiones: Esta serie de casos refleja el amplio espectro del daño renal en el SSp. Observamos que en nuestra población hispana, el involucro glomerular fue la alteración más frecuente, y en particular la glomerulopatía membranosa, seguida de la enfermedad tubulointersticial. La atrofia tubular y la fibrosis intersticial fueron también hallazgos comunes en la biopsia. El tratamiento con corticosteroides u otros agentes inmunosupresores parece disminuir la progresión de la enfermedad renal (AU)
Background: The aim of this study was to describe a case series of 13 Hispanic patients with primary Sjögren syndrome (pSS) and biopsy-proven renal involvement. Methods: We describe the clinical, serological and histological characteristics as well as the prognosis in a group of patients with pSS and biopsy-proven renal involvement, treated in 2 referral nephrology units in Mexico City. Results: Thirteen patients with pSS underwent kidney biopsy (KB) over a period of 27 years. The median duration from pSS diagnosis to KB was 13.9 months. Seven patients (54%) had glomerulonephritis and 6 patients (46%) had tubulointerstitial nephritis. All patients were treated with corticosteroids and/or immunosuppressants. Eight patients (62%) remained stable or their renal function improved after a median follow-up of 12 months. Conclusions: This case series reflects the broad spectrum of renal involvement in pSS. We observed that in our Hispanic population, glomerular involvement was the most frequent abnormality, mainly membranous glomerulopathy, followed by tubulointerstitial disease. Tubular atrophy and interstitial fibrosis were also common biopsy findings. Treatment with corticosteroids or other immunosuppressive agents appear to slow renal disease progression (AU)
Subject(s)
Humans , Male , Female , Adult , Middle Aged , Sjogren's Syndrome/diagnosis , Biopsy , Glomerulonephritis/complications , Prognosis , Adrenal Cortex Hormones/therapeutic use , Immunosuppressive Agents/therapeutic use , Sjogren's Syndrome/drug therapy , Kidney/pathology , Nephritis, Interstitial/complications , Sjogren's Syndrome/complications , Retrospective Studies , 28599 , Antibodies, Antinuclear/analysisABSTRACT
OBJECTIVES: To study the clinical characteristics and outcomes in systemic lupus erythematosus (SLE) patients who underwent cardiac surgery. METHODS: Retrospective analysis of 30 SLE patients who underwent cardiac surgery at a single center. Demographics, comorbidities, clinical and serologic characteristics, cardiovascular risk scores and treatment were recorded. Type of surgery, postoperative complications, mortality and histology were analyzed. RESULTS: Disease duration at surgery was 2 years. Valve replacement was the procedure most frequently performed (53%), followed by pericardial window (37%). At least one postoperative complication developed in 63% (mainly infections). An aortic cross-clamp time≥76minutes was associated with at least one postoperative complication (OR 6.4, 95% CI 1.1-35.4, p=.03). Early death occurred in 5 patients (17%) and late in 3 (10%); main causes were sepsis and heart failure. Disease activity was associated with pericardial window (OR 12.6, 95% CI 1.9-79, p=.007); lymphopenia≤1.200 (OR 10.1, 95% CI 1.05-97, p=.04); age≤30 years (OR 7.7, 95% CI 1.2-46.3, p=.02); and New York Heart Association class III (OR 7.0, 95% CI 1.1-42, p=.03). Postoperative infection was associated with length of hospital stay≥2 weeks (OR 54.9, 95% CI 5.0-602.1, p=.001); intensive care unit stay≥10 days (OR 20, 95% CI 1.6-171.7, p=.01); duration of mechanical ventilation≥5 days (OR 16.9, 95% CI 1.5-171.7, p=.01); and pulmonary artery systolic pressure≥50mmHg (OR 7.8, 95% CI 1.4-41.2, p=.01). CONCLUSIONS: Cardiac surgery in SLE confers high morbidity and mortality. SLE-specific preoperative risk scores should be designed to identify prognostic factors.
