Intraoperative and immediate postoperative transfusion: Clinical-hematological profile of transfunded patients in a university hospital.

INTRODUCTION: The transfusion practice by surgery blood reserve, varied among services, must be performed through the rational and restrictive use of blood components because it is a scarce and expensive resource for health care services. OBJECTIVE: Analyze the use of blood products for surgery blood reserve by means of the study of the clinical-hematological profile of patients submitted to intraoperative and immediate postoperative transfusions. METHODS: This was an observational, cross-sectional, and retrospective study, conducted by collecting biological, operational, and laboratory variables, involving 680 patients at a university hospital who had elective surgery with surgery blood reserve request sent during the period from October 2021 to October 2022. RESULTS: The overall transfusion rate was 25.44%, and the mean preoperative hemoglobin level of transfused patients was 9.74 ± 2.50 g/dL, with the mean number of transfusions packed red blood cell units was 1.58 ± 0.77. Patients with higher preoperative hemoglobin levels were less likely to have transfusion (p < 0.001) and patients who had surgical oncologic were more likely to require transfusion (p = 0.048). The transfusion rate of packed red blood cells and platelets concentrates, compared to what was requested, was 15.86% and 5.82%. CONCLUSION: There is a tendency of transfusions to follow restrictive models, with higher transfusion probability in surgical oncologic. Furthermore, there should be more a conscise use of the surgery blood reserves request.

POCUS guided small saphenous vein cannulation: A novel approach for peripheral venous assess in prone position.

Peripheral intravenous cannulation (PIVC) is a routine procedure in perioperative, and critical care settings and nearly one-third of the patients may have difficult intravenous access (DIVA). PIVC is challenging in a prone position in an intraoperative setting when there is a need for emergency access. Point of care ultrasonography (POCUS) is becoming the standard for assisting DIVA and improving the success rate. The small saphenous vein (SSV) in the posterolateral side of the mid-calf is a consistent vein in the lower extremity that provides an acceptable diameter and optimal depth for POCUS-guided PIVC in the prone position. A successful SSV cannulation was performed with an 18-G peripheral intravenous catheter under POCUS guidance on a 34-year-old male polytrauma patient in the prone position during the intraoperative period scheduled for D2 spine fixation. The SSV can be a credible option for emergency DIVA in the prone position under POCUS guidance.

Intensive glucose control in critically ill adults: a protocol for a systematic review and individual patient data meta-analysis / Controle intensivo da glicose em adultos em estado grave: um protocolo de revisão sistemática e metanálise de dados individuais de pacientes

ABSTRACT Objective: The optimal target for blood glucose concentration in critically ill patients is unclear. We will perform a systematic review and meta-analysis with aggregated and individual patient data from randomized controlled trials, comparing intensive glucose control with liberal glucose control in critically ill adults. Data sources: MEDLINE®, Embase, the Cochrane Central Register of Clinical Trials, and clinical trials registries (World Health Organization, clinical trials.gov). The authors of eligible trials will be invited to provide individual patient data. Published trial-level data from eligible trials that are not at high risk of bias will be included in an aggregated data meta-analysis if individual patient data are not available. Methods: Inclusion criteria: randomized controlled trials that recruited adult patients, targeting a blood glucose of ≤ 120mg/dL (≤ 6.6mmol/L) compared to a higher blood glucose concentration target using intravenous insulin in both groups. Excluded studies: those with an upper limit blood glucose target in the intervention group of > 120mg/dL (> 6.6mmol/L), or where intensive glucose control was only performed in the intraoperative period, and those where loss to follow-up exceeded 10% by hospital discharge. Primary endpoint: In-hospital mortality during index hospital admission. Secondary endpoints: mortality and survival at other timepoints, duration of invasive mechanical ventilation, vasoactive agents, and renal replacement therapy. A random effect Bayesian meta-analysis and hierarchical Bayesian models for individual patient data will be used. Discussion: This systematic review with aggregate and individual patient data will address the clinical question, 'what is the best blood glucose target for critically ill patients overall?' Protocol version 0.4 - 06/26/2023 PROSPERO registration: CRD42021278869

RESUMO Objetivo: Não está claro qual é a meta ideal de concentração de glicose no sangue em pacientes em estado grave. Realizaremos uma revisão sistemática e uma metanálise com dados agregados e de pacientes individuais de estudos controlados e randomizados, comparando o controle intensivo da glicose com o controle liberal da glicose em adultos em estado grave. Fontes de dados: MEDLINE®, Embase, Cochrane Central Register of Clinical Trials e registros de ensaios clínicos (Organização Mundial da Saúde, clinical trials.gov). Os autores dos estudos qualificados serão convidados a fornecer dados individuais de pacientes. Os dados publicados em nível de ensaio qualificado que não apresentem alto risco de viés serão incluídos em uma metanálise de dados agregados se os dados individuais de pacientes não estiverem disponíveis. Métodos: Critérios de inclusão: ensaios clínicos controlados e randomizados que recrutaram pacientes adultos, com meta de glicemia ≤ 120mg/dL (≤ 6,6mmol/L) comparada a uma meta de concentração de glicemia mais alta com insulina intravenosa em ambos os grupos. Estudos excluídos: aqueles com meta de glicemia no limite superior no grupo de intervenção > 120mg/dL (> 6,6mmol/L), ou em que o controle intensivo de glicose foi realizado apenas no período intraoperatório, e aqueles em que a perda de seguimento excedeu 10% até a alta hospitalar. Desfecho primário: Mortalidade intra-hospitalar durante a admissão hospitalar. Desfechos secundários: Mortalidade e sobrevida em outros momentos, duração da ventilação mecânica invasiva, agentes vasoativos e terapia de substituição renal. Utilizaremos metanálise bayesiana de efeito randômico e modelos bayesianos hierárquicos para dados individuais de pacientes. Discussão: Essa revisão sistemática com dados agregados e de pacientes individuais abordará a questão clínica: Qual é a melhor meta de glicose no sangue de pacientes graves em geral? Protocolo versão 0.4 - 26/06/2023 Registro PROSPERO: CRD42021278869

Intraoperative Epidural Analgesia Practices And Their Outcomes In Major Abdominal Surgeries At A Tertiary Care Hospital In Karachi.

OBJECTIVE: To investigate the association involving site, concentrations and dosing of local anaesthetics used intraoperatively on postoperative pain scores, motor block and need for rescue analgesia. METHODS: The observational study was conducted from June 1, 2020, to May 31, 2021, at the Aga Khan University Hospital, Karachi, and comprised patients planned for major abdominal surgeries with epidurals as primary analgesic modality. They were followed prospectively from placement of epidurals to 24h postoperatively. Data was collected from anaesthesia chart and pain management notes. Data was analysed using SPSS 19. RESULTS: Of the 170 patients, 96(56.4%) were females and 74(43.5%) were males. The overall mean age was 54.1±12.6 years and mean body mass index was 26.7±5.5Kg/m2. More than half of the patients 110(64.7%) had thoracic epidural, while 60(35.3%) had lumber epidural. Requirement of opioid co-analgesia intraoperatively was significantly high with higher compared to lower concentration of local anaesthetics (p=0.004). The difference in frequencies of motor block was significantly associated with catheter length (p=0.006). CONCLUSIONS: Intraoperative management of epidurals is an essential but overlooked component of perioperative pain management. Guidelines should be formulated for intraoperative epidural analgesic regimens to improve postoperative outcomes.

Operating Room Nurses' Understanding of Their Roles and Responsibilities for Patient Care and Safety Measures in Intraoperative Practice.

Introduction: Surgical care has been a vital part of healthcare services worldwide. Several patient safety measures have been adopted universally in the operating room (OR) before, during, and following surgical procedures. Despite this, errors or near misses still occur. Nurses in the OR have a pivotal role in the identification of factors that may impact patient safety and quality of care. Therefore, exploring the OR nurses' understanding of their roles and responsibilities for patient care and safety in the intraoperative practice, which could lead to optimal patient safety, is essential. Objective: This study explored the understanding of OR nurses regarding their roles and responsibilities for patient care and safety measures in the intraoperative practice. Methods: The study was conducted in one of the tertiary care hospitals in the United Arab Emirates. Qualitative, descriptive, exploratory research design was utilized. The data were collected using semi-structured face to face interviews. Purposive sampling included eight nurses. Data analysis was performed following Colaizzi's seven-step strategy. Results: Seven emerging themes were identified. The main themes are: patient safety, preoperative preparation, standardization of practice, time management, staffing appropriateness, staff education and communication, and support to the patient in the OR. Conclusion: OR nurse leaders may take into consideration the current findings as a reference for quality improvement projects in the hospital, considering the specific characteristics of each local setting. Although the participants consider that the environment is safe and the quality of care is high in the study setting, there is still room for improvement on workflows and processes. OR workflow should be improved especially by addressing the potential patient safety issues.

Association between intraoperative steroid and postoperative mortality in patients undergoing craniotomy for brain tumor.

Background: Despite the widespread use of intraoperative steroids in various neurological surgeries to reduce cerebral edema and other adverse symptoms, there is sparse evidence in the literature for the optimal and safe usage of intraoperative steroid administration in patients undergoing craniotomy for brain tumors. We aimed to investigate the effects of intraoperative steroid administration on postoperative 30-day mortality in patients undergoing craniotomy for brain tumors. Methods: Adult patients who underwent craniotomy for brain tumors between January 2011 to January 2020 were included at West China Hospital, Sichuan University in this retrospective cohort study. Stratified analysis based on the type of brain tumor was conducted to explore the potential interaction. Results: This study included 8,663 patients undergoing craniotomy for brain tumors. In patients with benign brain tumors, intraoperative administration of steroids was associated with a higher risk of postoperative 30-day mortality (adjusted OR 1.98, 95% CI 1.09-3.57). However, in patients with malignant brain tumors, no significant association was found between intraoperative steroid administration and postoperative 30-day mortality (adjusted OR 0.86, 95% CI 0.55-1.35). Additionally, administration of intraoperative steroids was not associated with acute kidney injury (adjusted OR 1.11, 95% CI 0.71-1.73), pneumonia (adjusted OR 0.89, 95% CI 0.74-1.07), surgical site infection (adjusted OR 0.78, 95% CI 0.50-1.22) within 30 days, and stress hyperglycemia (adjusted OR 1.05, 95% CI 0.81-1.38) within 24 h after craniotomy for brain tumor. Conclusion: In patients undergoing craniotomy for benign brain tumors, intraoperative steroids were associated with 30-day mortality, but this association was not significant in patients with malignant brain tumors.

Pressure injuries in the operating room: who are at risk?

OBJECTIVE: Operating room (OR)-related pressure injuries (PIs) constitute the majority of all hospital-acquired PIs. The aim of this study is to reveal the prevalence and risk factors of OR-related PIs. METHOD: This study used a cohort design. The data were collected at Acibadem Maslak Hospital in Istanbul between November 2018 and May 2019. The study population consisted of all patients undergoing surgery between these dates (n=612). The haphazard sampling method was used following application of the inclusion criteria. A patient identification form, the 3S intraoperative pressure ulcer risk assesment scale and the Braden Scale were used to collect data. RESULTS: Within the scope of the study, data were collected from 403 patients, of which 57.1% (n=230) were female and 42.9% (n=173) were male; mean age was 47.90±18.15 years. During surgery, PIs were detected in 8.4% of patients. In total, 42 PIs were detected in patients in the study; 92.8% were stage 1 and 7.2% were stage 2. It was determined that the PIs observed in 11.8% (n=4) of the patients were related to device/instrument use and 23.5% (n=8) were related to the positioning device. Risk factors found to be significant in the development of PIs were sex (male) (p=0.049), large amount of bleeding during surgery (p=0.001), dry (p=0.020) and lighter skin (p=0.012), duration of surgery (p=0.001), type of anaesthesia (p=0.015), and medical devices used (p=0.001). CONCLUSION: Early identification of risk factors may reduce OR-related PIs. Guidelines and procedures that focus on preoperative, intraoperative and postoperative evaluation can be developed to reduce and prevent surgery-related PIs and to standardise care.

Risk factors and outcomes associated with unplanned intraoperative extubation of the pediatric surgical patient: An analysis of the NSQIP-P database.

BACKGROUND: Unplanned intraoperative extubation is a rare but potentially catastrophic safety event. Inadvertent extubation in the neonatal and pediatric critical care setting is a recognized quality improvement metric whereas literature for intraoperative extubation is scarce. The aim of this study was to identify risk factors and outcomes associated with unplanned intraoperative extubation. METHODS: We queried the National Surgical Quality Improvement Program-Pediatric database from 2019 to 2020 for patients <18 years of age. A total of 253 673 patients were included in the analysis. Associations between demographics, clinical variables, and unplanned intraoperative extubation were evaluated with univariable and multivariable logistic regression models. The primary outcome was unplanned intraoperative extubation. Secondary outcomes were postoperative pulmonary complication, unplanned reintubation within 24 h, cardiac arrest on day of surgery, and surgical site infection. RESULTS: Unplanned intraoperative extubation occurred in 163 (0.06%) patients. Specific procedures experienced unplanned intraoperative extubation at a higher rate such as bilateral cleft lip repair (1.31% of procedure type) and thoracic repair of tracheoesophageal fistula (1.11% of procedure type). Age, operative time (z-score), American Society of Anesthesiologists Classification 3 and 4, neurosurgery, plastic surgery, thoracic surgery, otolaryngology, and structural pulmonary/airway abnormalities were independent risk factors. Unplanned intraoperative extubation was associated with an increased unadjusted risk for postoperative pulmonary complication (p < .005; OR, 6.05; 95% confidence interval [CI]: 1.93-14.44), unplanned reintubation within 24 h (p < .005; OR, 8.41; 95% CI: 2.08-34.03), cardiac arrest on day of surgery (p < .05; OR, 22.67; 95% CI: 0.56-132.35), and surgical site infection (p < .0005; OR, 3.27; 95% CI 1.74-5.67). CONCLUSIONS: Unplanned intraoperative extubation occurs at a higher frequency in a subset of procedures and patient types. Identifying and targeting at-risk patients with preventative measures may decrease the incidence of unplanned intraoperative extubation and its associated outcomes.

Automated Capture of Intraoperative Adverse Events Using Artificial Intelligence: A Systematic Review and Meta-Analysis.

Intraoperative adverse events (iAEs) impact the outcomes of surgery, and yet are not routinely collected, graded, and reported. Advancements in artificial intelligence (AI) have the potential to power real-time, automatic detection of these events and disrupt the landscape of surgical safety through the prediction and mitigation of iAEs. We sought to understand the current implementation of AI in this space. A literature review was performed to PRISMA-DTA standards. Included articles were from all surgical specialties and reported the automatic identification of iAEs in real-time. Details on surgical specialty, adverse events, technology used for detecting iAEs, AI algorithm/validation, and reference standards/conventional parameters were extracted. A meta-analysis of algorithms with available data was conducted using a hierarchical summary receiver operating characteristic curve (ROC). The QUADAS-2 tool was used to assess the article risk of bias and clinical applicability. A total of 2982 studies were identified by searching PubMed, Scopus, Web of Science, and IEEE Xplore, with 13 articles included for data extraction. The AI algorithms detected bleeding (n = 7), vessel injury (n = 1), perfusion deficiencies (n = 1), thermal damage (n = 1), and EMG abnormalities (n = 1), among other iAEs. Nine of the thirteen articles described at least one validation method for the detection system; five explained using cross-validation and seven divided the dataset into training and validation cohorts. Meta-analysis showed the algorithms were both sensitive and specific across included iAEs (detection OR 14.74, CI 4.7-46.2). There was heterogeneity in reported outcome statistics and article bias risk. There is a need for standardization of iAE definitions, detection, and reporting to enhance surgical care for all patients. The heterogeneous applications of AI in the literature highlights the pluripotent nature of this technology. Applications of these algorithms across a breadth of urologic procedures should be investigated to assess the generalizability of these data.

The importance of targeting intraoperative transmission of bacteria with antibiotic resistance and strain characteristics.

BACKGROUND: Evidence-based intraoperative infection control measures can reduce Staphylococcus aureus transmission and infections. We aimed to determine whether transmitted S. aureus isolates were associated with increased risk of multidrug resistance and associated traits. METHODS: S. aureus isolates obtained from intraoperative environmental, patient skin, and provider hand reservoirs among 274 operating room case pairs (1st and 2nd case of the day) across 3 major academic medical centers from March 2009 to February 2010 underwent systematic-phenotypic-genomic analysis to identify clonal transmission events. The association of clonal S. aureus transmission with multidrug resistance and resistance traits was investigated. Transmission dynamics were characterized. RESULTS: Transmitted isolates (N=58) were associated with increased risk of multi-drug antibiotic resistance [33% (19/58) transmitted vs. 10% (12/115) other isolates, risk ratio 3.14, 99% CI 1.34-7.38, P=0.0006]. Transmission was associated with a significant increase in resistance traits including mecA [40% transmitted isolates vs. 17% other isolates, risk ratio 2.28, P=0.0026] and ant (6)-Ia [26% transmitted isolates vs. 9% other isolates, risk ratio 2.97, P=0.0050]. Provider hands were a frequent reservoir of origin, between-case a common mode of transmission, and patient skin and provider hands frequent transmission locations for multidrug resistant pathogens. CONCLUSIONS: Intraoperative S. aureus transmission was associated with multidrug resistance and resistance traits. Proven infection control measures should be leveraged to target intraoperative transmission of multidrug resistant pathogens.

Atividades do enfermeiro de centro cirúrgico no cenário brasileiro: scoping review / Actividades de los enfermeros de quirófano en el escenario brasileño: scoping review / Perioperative nurses' activities in the brazilian scenario: a scoping review

Resumo Objetivo Mapear as principais atividades do enfermeiro de Centro Cirúrgico no cenário brasileiro, explicitadas na literatura vigente. Métodos Trata-se de uma scoping review elaborada de acordo com as diretrizes vigentes do Joanna Briggs Institute, utilizando o checklist para condução e relatório do estudo. A busca foi realizada por duas pesquisadoras independentes, no período entre agosto e dezembro de 2021, em seis bases de dados da área da saúde, utilizando os descritores: nurses, nurse role, intraoperative period, perioperative nursing, surgical centers . Fizeram parte da amostra artigos publicados entre janeiro de 2011 e outubro de 2022, nos idiomas inglês, português ou espanhol. As informações foram extraídas, classificadas, sintetizadas e apresentadas descritivamente. Resultados Foram incluídos 18 na síntese da pesquisa. A análise dos resultados possibilitou evidenciar como as atividades prevalentes na assistência a implementação de medidas de segurança cirúrgica (50%); na gestão, o gerenciamento de materiais, insumos e equipamentos (72%) e preparo das salas (39%); no ensino, educação permanente da enfermagem (50%). Não foram identificados estudos relacionados à atividade de pesquisador. Conclusão No cenário brasileiro, as atividades do enfermeiro de Centro Cirúrgico circundam-se entre gerenciais, assistenciais com menor proporção no ensino, destacando-se sua posição estratégica na mobilização das ações que promovem segurança e qualidade nos processos perioperatórios.

Resumen Objetivo Mapear las principales actividades de los enfermeros de quirófano en el escenario brasileño mencionadas en la literatura vigente. Métodos Se trata de una scoping review elaborada de acuerdo con las directrices vigentes del Joanna Briggs Institute, utilizando la lista de chequeo para la conducción e informe del estudio. La búsqueda fue realizada por dos investigadoras independientes, entre agosto y diciembre de 2021, en seis bases de datos del área de la salud, utilizando los descriptores: nurses, nurse role, intraoperative period, perioperative nursing, surgical centers . Artículos publicados entre enero de 2011 y octubre de 2022, en inglés, portugués y español formaron parte de la muestra. La información se extrajo, se clasificó, se sintetizó y se presentó descriptivamente. Resultados Se incluyeron 18 artículos en la síntesis del estudio. El análisis de los resultados permitió evidenciar las siguientes actividades predominantes: en la atención, la implementación de medidas de seguridad quirúrgica (50 %); en la gestión, la administración de material, insumos y equipos (72 %) y la preparación de las salas (39 %); en la enseñanza, la educación permanente de la enfermería (50 %). No se identificaron estudios relacionados con la actividad del investigador. Conclusión En el escenario brasileño, las actividades de los enfermeros de quirófano giran en torno de la gestión, la atención con menor proporción la enseñanza, y se destaca su posición estratégica en la movilización de las acciones que promueven seguridad y calidad en los procesos perioperatorios. Registro do protocolo na plataforma Open Science Framework: https://osf.io/8jmq6/

Abstract Objective To map perioperative nurses' main activities in the Brazilian scenario, explained in the current literature. Methods This is a scoping review prepared in accordance with current JBI guidelines, using the checklist for conducting and reporting the study. The search was carried out by two independent researchers, between August and December 2021, in six databases in the health area, using the descriptors nurses, nurse role, intraoperative period, perioperative nursing, surgical centers. Articles published between January 2011 and October 2022, in English, Portuguese or Spanish, were part of the sample. The information was extracted, classified, synthesized and presented descriptively. Results Eighteen were included in the research synthesis. The analysis of results made it possible to highlight the implementation of surgical safety measures as prevalent activities in care (50%); in management, material, input and equipment (72%) and room preparation (39%) management; in teaching, permanent nursing education (50%). No studies related to researcher activity were identified. Conclusion In the Brazilian scenario, perioperative nurses' activities range from management to assistance with a smaller proportion in teaching, highlighting their strategic position in mobilizing actions that promote safety and quality in perioperative processes. Protocol registration on the Open Science Framework platform: https://osf.io/8jmq6/

Controle de materiais e instrumental cirúrgico no intraoperatório: percepção e estratégias utilizadas por instrumentadores / Control of materials and surgical instruments in the intraoperative period: perception and strategies used by surgical technologists

Objetivo: Conhecer as estratégias utilizadas por instrumentadores para o controle de materiais e instrumental cirúrgico no intraope-ratório. Método: Estudo descritivo e qualitativo, realizado em hospital privado. Participaram 13 instrumentadores cirúrgicos. Os dados foram coletados entre agosto e setembro de 2022 por meio de entrevistas gravadas em áudio. Como instrumento para coleta dos dados, utilizou-se um roteiro estruturado, contendo sete perguntas, e questões referentes ao perfil da amostra. Foram incluídos técnicos de enfermagem forma-dos, atuantes como instrumentadores cirúrgicos. Foram excluídos instrumentadores ausentes no período da coleta de dados. Os dados foram analisados por meio da análise de conteúdo. Resultados: Com base na análise dos dados, emergiram quatro categorias: protocolo de cirurgia segura; controle de materiais e instrumentais; desafios no seguimento do protocolo de cirurgia segura; facilitadores do seguimento do proto-colo de cirurgia segura. Conclusão: Pôde-se conhecer as estratégias utilizadas por instrumentadores cirúrgicos para o controle dos materiais dispostos na mesa de instrumentação durante o intraoperatório. Pressa de profissionais, falta de adesão e o não seguimento de rotinas insti-tucionais caracterizam-se como desafios para o seguimento das etapas do protocolo de cirurgia segura

Objective: To know the strategies used by surgical technologists to control materials and surgical instruments in the intraopera-tive period. Method: This qualitative descriptive study was carried out in a private hospital. A total of 13 surgical technologists participated in the research. Data were collected during audio-recorded interviews between August and September 2022. The data collection instrument was a structured questionnaire consisting of seven questions, as well as items related to the sample profile. We included trained nursing technicians, working as surgical technologists. Those who were absent during data collection were excluded. Data were analyzed by con-tent analysis. Results: The data analysis produced four categories: surgical safety checklist; control of materials and instruments; challenges in following the surgical safety checklist; facilitators to following the surgical safety checklist. Conclusions: The study allowed us to know the strategies used by surgical technologists to control the materials arranged on the instrument table during the intraoperative period. The haste of professionals, lack of adherence, and non-compliance with institutional routines are regarded as challenges in following the steps of the surgical safety checklis

Objetivo: Conocer las estrategias utilizadas por instrumentistas para el control de materiales e instrumental quirúrgico en el intraope-ratorio. Método: Estudio descriptivo y cualitativo, realizado en hospital privado. Participaron 13 instrumentistas quirúrgicos. Los datos fueron colectados entre agosto y septiembre de 2022 por medio de entrevistas grabadas en audio. Como instrumento para colecta de los datos, se utilizó um guion estructurado, conteniendo siete preguntas, y cuestiones referentes al perfil de la muestra. Fueon incluidos técnicos de enfermería egre-sados, actuantes como instrumentistas quirúrgicos. Fueron excluidos instrumentistas ausentes en el período de la colecta de datos. Los datos fue-ron analizados por medio del análisis de contenido. Resultados: Con base en el análisis de los datos, emergieron cuatro categorías: protocolo de cirugía segura; control de materiales e instrumentales; desafíos en el seguimiento del protocolo de cirugía segura; facilitadores del seguimiento del protocolo de cirugía segura. Conclusión: Se pueden conocer las estrategias utilizadas por instrumentistas quirúrgicos para el control de los materiales dispuestos en la mesa de instrumentación durante el intraoperatorio. Prisa de profesionales, falta de adhesión y el no seguimiento de rutinas institucionales se caracterizan como desafíos para el seguimiento de las etapas del protocolo de cirugía segura

Comparison of invasive and non-invasive blood pressure in perioperative elderly hypertensive patients with atherosclerosis of the extremities / 中华老年医学杂志

Objective:To compare the correlation and differences between invasive blood pressure(IBP)and noninvasive blood pressure(NBP)monitoring at three different levels of systolic blood pressure(SBP), diastolic blood pressure(DBP)and mean arterial pressure(MAP)in elderly hypertensive patients with atherosclerosis of the extremities during perioperative anesthesia.Methods:156 elderly patients were prospectively admitted to the Department of Vascular Surgery, Beijing Anzhen Hospital, Capital Medical University, for peripheral vascular stenosis interventions between December 2018 and December 2021.Their IBP and NBP were measured simultaneously during the perioperative anesthesia period.Then the correlation and consistency between IBP and NBP were analyzed via the Pearson correlation coefficient, Bland-Altman plots, and the receiver operating characteristic curve(ROC curve).Results:A total of 156 elderly patients were enrolled, including 108 men(69.2%)and 48 women(30.8%), with a mean age of 72.2±7.6.Pearson correlation analysis revealed that there was a significant positive correlation between IBP and NBP.The correlation coefficient was 0.993 for invasive systolic blood pressure(ISBP)and non-invasive systolic blood pressure(NSBP), 0.808 for invasive diastolic blood pressure(IDBP)and non-invasive diastolic blood pressure(NDBP), and 0.853 for invasive mean arterial pressure(IMAP)and non-invasive mean arterial pressure(NMAP)( P<0.001 for all). Bland-Altman analysis showed that the mean deviation of ISBP and NSBP was(20.3±6.5)mmHg(95% CI: 19.18-21.38)(1 mmHg=0.133 kPa), the mean deviation of IDBP and NDBP was(3.8±9.7)mmHg(95% CI: 2.13-5.41), and the mean deviation of IMAP and NMAP was(12.7±11.0)mmHg(95% CI: 10.83-14.55). The correlation coefficient of ISBP-NSBP deviation with ISBP was 0.856, the correlation coefficient of IDBP-NDBP deviation with IDBP was 0.206, and the correlation coefficient of IMAP-NMAP deviation with IMAP was 0.583( P<0.05 for all). When ISBP≥137 mmHg, the sensitivity of an ISBP-NSBP deviation ≥20 mmHg was 96.3%, the specificity was 96.4%, and the area under the ROC curve was 0.970(95% CI: 0.934-1.000). When ISBP≥158 mmHg, the sensitivity and specificity of a predicted ISBP-NSBP deviation≥25 mmHg were 97.4% and 78.8%, respectively, and the area under the ROC curve was 0.876(95% CI: 0.820-0.933); When ISBP≥208 mmHg, the sensitivity and specificity of a predicted ISBP-NSBP deviation≥30 mmHg were 100% and 98.5%, respectively, and the area under the ROC curve was 0.985(95% CI: 0.964-1.000). Conclusions:There is a good agreement between IBP and NBP in elderly hypertensive patients with peripheral atherosclerosis during perioperative anesthesia.The magnitude of the deviation between the two is significantly and positively correlated with the level of blood pressure, suggesting that we should appropriately choose the method of blood pressure measurement in the perioperative period to correctly evaluate the blood pressure of these elderly patients.

Advances in the effect of body temperature on perioperative neurocognitive disorders in elderly patients / 中华老年医学杂志

Perioperative neurocognitive disorders(PND)is a common complication after surgery or anesthesia, especially in elderly patients.The effects and mechanism of body temperature on PND are still controversial.In this paper, the relationship between body temperature and PND and its possible mechanism of action were discussed based on some research results of perioperative body temperature management in elderly patients, aiming at suggesting the significance of body temperature management in preventing PND.

Exploration of critical values of monitoring indexes for perioperative major adverse cardiac events in elderly patients with biliary diseases / 中华老年医学杂志

Objective:The purpose of this study was to explore the critical values of monitored indexes of perioperative major adverse cardiac events(MACE), so as to take effective prevention and treatment measures in time to maintain the stability of perioperative cardiac function to further improve the perioperative safety of elderly patients with biliary diseases.Methods:The clinical data of 246 elderly patients with biliary diseases in our hospital from May 2016 to February 2022 were collected.According to whether MACE occurred during the perioperative period, they were divided into the MACE group and the non-MACE group.The differences of clinical data, the monitoring indexes of postoperative cardiac function, and the coagulation function between the two groups were compared and analyzed.Logistic regression was used to analyze the independent risk factors of perioperative MACE, the cut-off value of the receiver operating characteristic(ROC)curve was calculated, and the Logistic multivariate prediction model was established.Results:In the MACE compared with the non-MACE group, age, postoperative complications and mortality, postoperative hospital stay, and the levels of postoperative high sensitivity troponin-I(Hs-TnI), creatine kinase isoenzyme(CK-MB), myoglobin(MYO), B-type natriuretic peptide(BNP), and D-dimer(D-D)were significantly increased(all P<0.05). Multivariate Logistic regression showed that postoperative BNP and D-D were two independent risk factors for perioperative MACE, and their cut-off values in the ROC curve were 382.65 pg/mL and 0.975mg/L respectively.The Logistic multivariate prediction model established by the Logistic regression equation was P= ex/(1+ ex), X=-5.710+ 0.003X 1+ 0.811X 2, where X 1 was the postoperative BNP level and X 2 was the postoperative D-D level.The accuracy, specificity and sensitivity of this prediction model for predicting perioperative MACE were 96.3%(237/246), 100.0%(235/235), and 18.2%(2/11). Conclusions:The Logistic multivariate prediction model established in this study can effectively predict the occurrence of perioperative MACE in elderly patients.Postoperative BNP and D-D were two independent risk factors for perioperative MACE.The cut-off values of BNP and D-D in the ROC curve could be used as critical values for monitoring perioperative MACE.Therefore, it is of great clinical significance to take effective prevention and treatment measures in time to maintain the stability of perioperative cardiac function, and further improve the perioperative safety of elderly patients with biliary diseases.

Evaluation of pressure ulcer risk and development in operating rooms.

AIM: This study aimed to determine the risk and development of pressure ulcers in operating rooms. MATERIALS AND METHODS: The sample of the study included a total of 250 patients. In the study, the risk of pressure ulcers was assessed before the operation, and the development of pressure ulcers was evaluated within 24 h after the operation. RESULTS: The risk of pressure ulcers was low before the operation, and Stage I pressure ulcer developed in 12.8% of the patients within 24 h after the operation. The patients had pressure ulcers mostly in their sacrum. Their mean 3S Intraoperative Risk Assessment Scale of Pressure Sore score was 15.68 ± 4.84, suggesting that they were not at risk of developing pressure ulcers. Having a chronic disease (OR = 8.986; 95% CI = 3.697-21.845), undergoing general anesthesia (OR = 3.084; 95% CI = 1.323-7.194), and orthopedic surgery (OR = 10.172; 95% CI = 3.121-33.155) were statistically significant risk factors for pressure ulcers (p < 0.001). Additionally, moderately edematous skin (OR = 3.838; 95% CI = 1.024-14.386), overweight/underweight (OR = 16.333; 95% CI = 3.779-70.602), intraoperative bleeding greater than 800 ml (OR = 13.000; 95% CI = 3.451-48.969), operation time longer than 5 h (OR = 21.667; 95% CI = 2.122-221.223), moderate intraoperative stress (OR = 4.917; 95% CI = 0.425-56.916), body temperature higher than 38.3 °C or lower than 36.1 °C (OR = 5.462; 95% CI = 2.161-13.805), and intraoperative prone position (OR = 3.354; 95% CI = 1.386-8.115) were statistically significant risk factors for the development of pressure ulcers. CONCLUSION: According to our preoperative pressure ulcer risk assessment, it is very important to take additional protective measures both during and after surgical operations to prevent pressure ulcers.

INTRAOPERATIVE EVALUATION AND LEVEL OF CONTAMINATION DURING TOTAL KNEE ARTHROPLASTY.

Introduction: Despite numerous articles on intraoperative contamination in total knee arthroplasty (TKA) procedures, the available data on tissue contamination are scarce and mainly based on evaluating bacteriological swabs. Methods: Two hundred and forty specimens, divided between bone and soft tissue, were obtained from 40 consecutive unilateral primaries TKAs. The specimens were evaluated for aerobic and anaerobic bacterial growth. Colony-forming units/gram (CFU/g) were calculated on the contaminated specimens to determine the level of contamination. Results: The contamination rate in intraoperative specimens was 15% during TKA. The contamination level had a mean of 10.6 and a median of 5, ranging from 1-70 CFU/g. The most common contaminating organisms in all samples were Staphylococcus aureus (38.9%) and Staphylococcus epidermidis (30.6%). No clinical infections were detected in TKAs in the follow-up period. Conclusion: The contamination rate during TKA is relatively high, despite the practice of standard preventive measures. Contamination levels, measured by CFU/g, are considered low when compared to the infection threshold of 105 reported in the literature. However, contamination should not be underestimated due to the presence of foreign bodies (implants), which are known to significantly lower this threshold. Level of evidence IV; case series .

Introdução: Apesar dos inúmeros artigos sobre a contaminação intraoperatória em procedimentos de artroplastia total do joelho (ATJ), os dados disponíveis sobre a contaminação tecidual são escassos e baseiam-se principalmente na avaliação de swabs bacteriológicos. Métodos: Duzentos e quarenta espécimes, divididos entre ossos e tecidos moles, foram obtidos de 40 ATJ primárias unilaterais consecutivas. Os exemplares foram avaliados quanto ao crescimento bacteriano aeróbio e anaeróbio. As unidades formadoras de colônias/grama (UFC/g) foram calculadas nas amostras contaminadas para determinar o nível de contaminação. Resultados: A taxa de contaminação em espécimes intraoperatórios foi de 15% durante a ATJ. O nível de contaminação teve uma média de 10,6 e uma mediana de 5 variando de 1-70 UFC/g. Os organismos contaminantes mais comuns em todas as amostras foram Staphylococcus aureus (38,9%) e Staphylococcus epidermidis (30,6%). Nenhuma infecção clínica foi detectada nas ATJ durante o período de acompanhamento. Conclusão: A taxa de contaminação durante a ATJ é relativamente alta, apesar da prática de medidas preventivas padrão. Os níveis de contaminação, medidos por UFC/g, são considerados baixos quando comparados ao limiar de infecção de 105, relatado na literatura. No entanto, a contaminação não deve ser negligenciada devido à presença de corpos estranhos (implantes) que são conhecidos por reduzir significativamente esse limiar. Nível de evidência IV; series de casos.

The association between carotid flow time and fluid responsiveness in children under general anesthesia.

BACKGROUND: Fluid administration in children undergoing surgery requires precision, however, determining fluid responsiveness can be challenging. Ultrasound has been used widely in the emergency department and intensive care units as a noninvasive, bedside manner of determining volume status, but the intraoperative period presents unique challenges as often the chest and abdomen are inaccessible for ultrasound. We investigate whether carotid artery ultrasound, specifically carotid flow time, can be used to determine fluid responsiveness in children under general anesthesia. METHODS: Prospective observational study of 87 children ages 1-12 years who were scheduled for elective noncardiac surgery. Ultrasound of the carotid artery and heart was performed at three time points: (1) after inhalational induction of anesthesia with the subject spontaneously breathing, (2) during positive pressure ventilation through endotracheal tube or supraglottic airway with tidal volume set at 8 ml/kg with PEEP of 10 cmH2 O, and (3) after a 10 ml/kg fluid bolus. Carotid flow time and cardiac output were measured from saved images. RESULTS: Corrected carotid flow time (FTc) increased with initiation of positive pressure ventilation in both fluid responders and nonresponders (352.7 vs. 365.3 msec, p = .005 in fluid responders; 348.3 vs. 365.2 msec, p = .001 in nonresponders). FTc increased after fluid bolus in both responders and nonresponders (365.3 vs. 397.6 msec, p < .001 in fluid responders; 365.2 vs. 397.2 msec, p < .001 in nonresponders). However, baseline FTc during spontaneous ventilation or positive pressure ventilation prior to fluid bolus was not associated with fluid responsiveness. DISCUSSION: Flow time increases with initiation of positive pressure ventilation and after administration of a fluid bolus. FTc may serve as an indicator of fluid status but does not predict fluid responsiveness in children under general anesthesia.

Mental 3D Visualization: Building Surgical Resilience for Performing High-Risk Procedures.

OBJECTIVE: Psychological resilience has been studied in several demanding professions, including the military and competitive sports, yet specific strategies for managing stress are not commonly addressed during surgical training. The objective of this study was to investigate how surgeons view performance under pressure during high-risk surgical steps. DESIGN: Using constructivist grounded theory, we conducted 12 individual semi-structured interviews with a theoretical sample teaching surgeons, representing 10 different specialties and a range of experience. We drew on Luthar's concept of resilience as positive adaptation, an active and flexible process in which critical choices are made in stressful situations. We asked about both protective and vulnerability factors contributing to resilience in high-risk surgery. We coded transcripts, transforming each category of codes into a visual schematic highlighting our findings related to performance under pressure and resilience, which we transformed into a conceptual model. SETTING: Truman Medical Center, Kansas City, MO, tertiary hospital. PARTICIPANTS: Twelve teaching surgeons from 10 different surgical specialties. RESULTS: Mental 3D visualization is necessary for proper preoperative planning, enacting contingency plans in the face of intra-operative challenges, and managing emotions during high-risk surgery. Each of these factors informs staying calm under pressure and is necessary for building long-term surgical resilience. Negotiating challenges in high-risk surgery is contingent upon adapting to risk developed over time through surgical experience, mental 3D visualization, intentionality, and self-reflection. CONCLUSIONS: Mental 3D visualization informs processes for staying calm under pressure and is essential for building long-term surgical resilience. We recommend that residency curricula offer progressive education on mental 3D visualization and foster intraoperative environments that promote adapting to risk.

The impact of intraoperative blood pressure variability on the risk of postoperative adverse outcomes in non-cardiac surgery: a systematic review.

Hemodynamic stability during surgery seems to account for positive postoperative outcomes in patients. However, little is known about the impact of intraoperative blood pressure variability (IBPV) on the postoperative complications. The aim was to investigate whether IBPV is associated with the development of postoperative complications and what is the nature of this association. We conducted a systematic search in PubMed, Medical Subject Headings, Embase, Web of Science, SCOPUS, clinicaltrials.gov, and Cochrane Library on the 8th of April, 2021. We included studies that only focused on adults who underwent primarily elective, non-cardiac surgery in which intraoperative blood pressure variation was measured and analyzed in regard to postoperative, non-surgical complications. We identified 11 papers. The studies varied in terms of applied definitions of blood pressure variation, of which standard deviation and average real variability were the most commonly applied definitions. Among the studies, the most consistent analyzed outcome was a 30-day mortality. The studies presented highly heterogeneous results, even after taking into account only the studies of best quality. Both higher and lower IBPV were reported to be associated for postoperative complications. Based on a limited number of studies, IBPV does not seem to be a reliable indicator in predicting postoperative complications. Existing premises suggest that either higher or lower IBPV could contribute to postoperative complications. Taking into account the heterogeneity and quality of the studies, the conclusions may not be definitive.