Effect of using 200 µg of gonadorelin at the first gonadotropin-releasing hormone of the breeding-Ovsynch on ovulatory response and pregnancies per artificial insemination in first-service lactating Holstein cows.

This study aimed to determine whether 200 µg of GnRH (gonadorelin hydrochloride) would increase ovulatory response and pregnancies per artificial insemination (P/AI) compared with 100 µg at the first GnRH of the breeding-Ovsynch of a Double-Ovsynch program (DO) in lactating Holstein cows. Weekly cohorts of primiparous (n = 719) and multiparous (n = 1,191) cows submitted to DO (GnRH, 7 d later PGF2α, 3 d later GnRH, 7 d later GnRH [G1], 7 d later PGF2α [PG1], 1 d later PGF2α, ∼32 h later GnRH [G2], and ∼16 h later timed artificial insemination [TAI]) for first service, randomly received either 100 µg or 200 µg of GnRH (gonadorelin hydrochloride) at G1 (primiparous, 64-75 DIM; multiparous, 59-70 DIM). Ovulation was determined by ultrasound 2 d after G1 (n = 1,294) and 2 d after G2 (n = 1,020). Blood samples were collected at G1 and at PG1 d to evaluate serum progesterone (P4) concentrations. Conventional (n = 314, Angus; n = 1,084, Holstein) and Holstein sexed semen (n = 276) were used. Pregnancy was diagnosed on d 32, 46, 88, and 200 post-TAI. The high dose of GnRH (200 µg) increased overall ovulatory response to G1 compared with 100 µg (81.3% vs. 65.1%), being similar between parities (primiparous, 72.2%; multiparous, 73.9%). Mean serum P4 concentrations at PG1 did not differ between treatments (100 µg: 9.59 ± 0.15 ng/mL vs. 200 µg: 9.43 ± 0.15 ng/mL). Cows with no ovulation to G1 had higher serum P4 concentrations at G1 than cows with ovulation to G1 (6.27 ± 0.19 ng/mL vs. 4.66 ± 0.07 ng/mL). At PG1, the proportion of cows with functional corpus luteum (98.7% vs. 89.7%) and serum P4 concentrations (9.68 ± 0.12 ng/mL vs. 9.14 ± 0.22 ng/mL) were greater in cows that ovulated to G1 compared with cows that did not ovulate. Also, cows that ovulated to G1 had a greater increase in serum P4 concentrations from G1 to PG1 than cows with no ovulation (5.26 ± 0.12 ng/mL vs. 3.32 ± 0.25 ng/mL). The high dose of GnRH improved overall P/AI at 32 d post-TAI in cows inseminated with conventional semen (54.6% vs. 48.2%) and tended to improve P/AI on 46 (48.8% vs. 44.9%), 88 (47.6% vs. 43.4%), and 200 (45.3% vs. 41.2%) d post-TAI. Primiparous cows inseminated with conventional semen had better P/AI than multiparous cows at d 32 (58.2% vs. 49.4%), 46 (55.1% vs. 44.4%), 88 (53.2% vs. 43.2%) and 200 (51.6% vs. 40.7%) post-TAI. Primiparous cows treated with 200 µg GnRH had lower P/AI on d 32, 46, 88, and 200 post-TAI when inseminated with sexed semen than with conventional semen. In summary, the higher dose of GnRH at G1 improved ovulatory response and P/AI at d 32 post-TAI and tended to improve P/AI at d 46, 88, and 200 post-TAI in cows inseminated with conventional semen. Moreover, the effect of treatment on P/AI in primiparous cows depended on semen type (conventional vs. sexed semen).

Magnetic resonance in patients with cardiovascular devices. SEC-GT CRMTC/SEC-Heart Rhythm Association/SERAM/SEICAT consensus document.

Magnetic resonance has become a first-line imaging modality in various clinical scenarios. The number of patients with different cardiovascular devices, including cardiac implantable electronic devices, has increased exponentially. Although there have been reports of risks associated with exposure to magnetic resonance in these patients, the clinical evidence now supports the safety of performing these studies under specific conditions and following recommendations to minimize possible risks. This document was written by the Working Group on Cardiac Magnetic Resonance Imaging and Cardiac Computed Tomography of the Spanish Society of Cardiology (SEC-GT CRMTC), the Heart Rhythm Association of the Spanish Society of Cardiology (SEC-Heart Rhythm Association), the Spanish Society of Medical Radiology (SERAM), and the Spanish Society of Cardiothoracic Imaging (SEICAT). The document reviews the clinical evidence available in this field and establishes a series of recommendations so that patients with cardiovascular devices can safely access this diagnostic tool.

Resonancia magnética para portadores de dispositivos cardiovasculares. Consenso SEC-GT CRMTC/SEC-Asociación del Ritmo Cardiaco/SERAM/SEICAT / Magnetic resonance in patients with cardiovascular devices. SEC-GT CRMTC/SEC-Heart Rhythm Association/SERAM/SEICAT consensus document

La resonancia magnética se ha convertido en técnica de imagen de primera línea en muchas situaciones clínicas. El número de pacientes portadores de dispositivos cardiovasculares, como los dispositivos cardiovasculares electrónicos implantables, ha crecido de modo exponencial. Aunque se han descrito complicaciones y efectos adversos cuando estos pacientes se someten a exploraciones de resonancia magnética, la evidencia clínica actual respalda la seguridad de realizar estos estudios cuando se cumplen unas normas y recomendaciones dirigidas a minimizar los posibles riesgos. El Grupo de Trabajo de Cardiorresonancia Magnética y Cardiotomografía Computarizadas de la Sociedad Española de Cardiología (SEC-GT CRMTC), la Asociación del Ritmo Cardiaco de la Sociedad Española de Cardiología (SEC-Asociación del Ritmo Cardiaco de la Sociedad Española de Cardiología), la Sociedad Española de Radiología Médica (SERAM) y la Sociedad Española de Imagen Cardiotorácica (SEICAT) han elaborado el presente documento, que revisa la evidencia disponible en este campo y establece las recomendaciones necesarias para que los pacientes portadores de dispositivos cardiovasculares electrónicos implantables y otros dispositivos puedan acceder con seguridad a este instrumento diagnóstico.(AU)

Magnetic resonance has become a first-line imaging modality in various clinical scenarios. The number of patients with different cardiovascular devices, including cardiac implantable electronic devices, has increased exponentially. Although there have been reports of risks associated with exposure to magnetic resonance in these patients, the clinical evidence now supports the safety of performing these studies under specific conditions and following recommendations to minimize possible risks. This document was written by the Working Group on Cardiac Magnetic Resonance Imaging and Cardiac Computed Tomography of the Spanish Society of Cardiology (SEC-GT CRMTC), the Heart Rhythm Association of the Spanish Society of Cardiology (SEC-Heart Rhythm Association), the Spanish Society of Medical Radiology (SERAM), and the Spanish Society of Cardiothoracic Imaging (SEICAT). The document reviews the clinical evidence available in this field and establishes a series of recommendations so that patients with cardiovascular devices can safely access this diagnostic tool.(AU)

Low Intake of Choline Is Associated with Diminished Strength and Lean Mass Gains in Older Adults.

OBJECTIVES: Choline is an essential micronutrient for many physiological processes related to exercise training including biosynthesis of acetylcholine. Though dietary choline intake has been studied in relation to endurance training and performance, none have studied it during resistance exercise training (RET) in older adults. The objective of the study was to examine the relationship between choline intake and muscle responses to RET in older adults. METHODS: Forty-six, 60-69-year-old individuals (M=19, F=27) underwent 12 weeks of RET (3x/week, 3 sets, 8-12 reps, 75% of maximum strength [1RM], 8 exercises). Body composition (DEXA) and 1RM tests were performed before and after training. After analyzing 1,656 diet logs (3x/week, 46 participants, 12 weeks), participants' mean choline intakes were categorized into three groups: Low (2.9-5.5 mg/kg lean/d), Med-Low (5.6-8.0 mg/kg lean/d), or Adequate (8.1-10.6 mg/kg lean/d). These correspond to <50%, ~63%, and ~85% of Adequate Intake (AI) for choline, respectively. RESULTS: Gains in composite strength (leg press + chest press 1RM) were significantly lower in the Low group compared with the other groups (Low: 30.9 ± 15.1%, Med-Low: 70.3 ± 48.5%, Adequate: 81.9 ± 68.4%; p=0.004). ANCOVA with cholesterol, protein, or other nutrients did not alter this result. Reduced gains in lean mass were also observed in the Low group, compared with higher choline intake of 5.6-10.6 mg/kg lean/d (1.3 ± 0.6% vs. 3.2 ± 0.6%, p<0.05). CONCLUSION: These data suggest that this population of older adults does not consume adequate choline and lower choline intake is negatively and independently associated with muscle responses to RET.

Implementación de un programa basado en IPASS en UCI / Implementation of an IPASS-based program in the ICU

Introducción: El uso de herramientas estandarizadas como estrategia de comunicación para brindar información relevante, precisa y actualizada, forma parte de las iniciativas de calidad en las instituciones que cumplen altos estándares en la atención de pacientes. Objetivo: Describir la implementación de un programa de traspaso (IPASS) en unidades de cuidados intensivos pediátricos específicos. Material y métodos: Estudio cuasi-experimental antes y después de una intervención, no controlado, utilizando como sujetos a los profesionales de la salud involucrados en traspasos de pacientes de la unidad de terapia intensiva cardiovascular (UCI 35) e inmunosuprimidos (UCI 72). La intervención consistió en la introducción de un paquete de medidas de estandarización del traspaso de pacientes que consta de: una herramienta escrita, una mnemotecnia oral, una capacitación de trabajo en equipo, observación y devolución estandarizada de los traspasos, basados en la metodología IPASS. Se realizó además una encuesta de percepción de seguridad, tanto en la etapa pre y post intervención. Se comparó el cumplimiento de cada componente del traspaso antes y después de la intervención mediante la prueba de chi2 . Resultados: Se realizaron 101 observaciones de traspaso y 56 encuestas. La mediana de pacientes por cada observación fue 6 (r: 4 a 12) y el tiempo promedio de 26± 11 min. Conclusiones: El uso de un paquete de medidas de estandarización del traspaso de pacientes posquirúrgicos cardiovasculares e inmunosuprimidos aumentó significativamente la presencia de información clave sobre criticidad de la enfermedad, acciones y situaciones de contingencia, junto con la inclusión de la síntesis por el receptor del traspaso (AU)

Introduction: The use of standardized tools as a communication strategy to provide relevant, accurate, and up-to-date information is part of quality initiatives in institutions that adhere to high standards in patient care. Objective: To describe the implementation of a handoff program (IPASS) in specific pediatric intensive care units. Methods: An uncontrolled, quasi-experimental, beforeand-after study. Subjects were healthcare providers involved in patient handoffs in the cardiovascular (ICU 35) and immunocompromised-patient (ICU 72) intensive care units. The intervention consisted of the introduction of a bundle to standardize patient handoff consisting of: a written tool, an oral mnemonic, teamwork training, observation, and standardized feedback for handoffs based on the IPASS methodology. A safety perception survey was also carried out, both in the pre- and post-intervention stage. Compliance with each handoff component before and after the intervention was compared using the Chi-squared test. Results: 101 handoff observations and 56 surveys were conducted. The median number of patients per observation was 6 (r: 4 to 12) and the mean handoff time was 26±11 min. Conclusions: The use of a standardized handoff bundle for post-surgical cardiovascular and immunocompromised patients significantly increased the availability of key information on disease severity, actions, and contingency situations, as well as a synthesis by the handoff receiver (AU)

Leg-ligament-thigh-trunk Dynamic Model to Describe Posture Recovery after Double-leg Landing Task.

One of the most common injuries in athletes is that of the Anterior Cruciate Ligament (ACL). This type of injury is commonly analyzed by observing the dynamics of the body in the sagittal plane. ACL injury can be indicated by a the small knee flexion angle and a small angular position of the trunk at start of leg-landing task. In this article a 4 Degrees of Freedom (DOF) dynamic model of the human body restricted to the sagittal plane is presented. The model represents the movement of the legs, an equivalent ligament between the tibia and femur, thighs and trunk. It is used to represent the recovery of vertical posture during a double leg landing task. Initial conditions in velocity are calculated as those resulting from a free fall from a height H. The results obtained from the simulation were satisfactory since the recovery of the vertical posture is achieved and it is possible to approximate the deformation suffered by the equivalent ligament. In conclusion, this model can be very useful in determining the behavior of the ligament and eventually, the possibility of injury after a double-leg landing task.

Prevalencia de la miocardiopatía hipertrófica en una amplia muestra de la población laboral española / Prevalence of hypertrophic cardiomyopathy in a large sample of the Spanish working population

Antecedentes y objetivo En España no existen estudios que hayan evaluado la prevalencia de la miocardiopatía hipertrófica en la población general. El objetivo de este trabajo fue evaluar la prevalencia de la miocardiopatía hipertrófica en una muestra amplia de la población laboral española. Materiales y métodos Se incluyó a 13.179 trabajadores (73% varones, con una edad media de 40 años) de 5 regiones españolas a los que, entre mayo de 2008 y noviembre de 2010, se les realizó un reconocimiento médico con un electrocardiograma. Se derivó a los trabajadores con alteraciones sugestivas en el electrocardiograma o con antecedentes médicos predisponentes (síncope de esfuerzo o muerte súbita en familiar menor de 50 años) para una evaluación ecocardiográfica. Se definió miocardiopatía hipertrófica a la presencia de un grosor parietal igual o mayor a 13mm en cualquier segmento del ventrículo izquierdo. Se estimó la prevalencia de la miocardiopatía hipertrófica en toda la muestra y en los trabajadores no hipertensos. Resultados Se seleccionó a 1.008 trabajadores para el ecocardiograma, aunque solo 496 (49,2% de los seleccionados) acudieron a la prueba. Tras el ecocardiograma se detectaron 16 casos de miocardiopatía hipertrófica y se estimó una prevalencia del 0,24% en el total de la muestra. En el subgrupo de trabajadores no hipertensos se objetivaron 10 casos de miocardiopatía hipertrófica, que se corresponden con una prevalencia estimada del 0,19%. Conclusiones En nuestra muestra de la población laboral española la prevalencia estimada de miocardiopatía hipertrófica fue del 0,24%. En el subgrupo de pacientes no hipertensos la prevalencia estimada fue del 0,19% (AU)

Background and objectives To date, in Spain, there are no studies that have evaluated the prevalence of hypertrophic cardiomyopathy in the general population. The aim of this study was to assess the prevalence of hypertrophic cardiomyopathy in a large sample of the working population of Spain. Materials and methods The study included 13,179 workers (73% men; mean age, 40 years) from 5 regions of Spain who, between May 2008 and November 2010, had a medical examination with an electrocardiogram. The workers with suggestive abnormalities in the electrocardiogram or a predisposing medical history (exertional syncope or sudden death of a family member younger than 50 years) were referred for an echocardiographic evaluation. We defined hypertrophic cardiomyopathy as a parietal thickness ≥13mm in any segment of the left ventricle. We estimated the prevalence of hypertrophic cardiomyopathy in the entire sample and in the workers without hypertension. Results A total of 1008 workers were selected for the echocardiogram, although only 496 (49.2% of those selected) of these attended the appointment. After the echocardiogram, we detected 16 cases of hypertrophic cardiomyopathy, estimating a prevalence of 0.24% for the entire sample. In the subgroup of workers with no hypertension, we observed 10 cases of hypertrophic cardiomyopathy, which corresponds to an estimated prevalence of 0.19%. Conclusions In our sample of the working population in Spain, the estimated prevalence of hypertrophic cardiomyopathy was 0.24%. In the subgroup of patients with no hypertension, the estimated prevalence was 0.19% (AU)

Prevalence of hypertrophic cardiomyopathy in a large sample of the Spanish working population.

BACKGROUND AND OBJECTIVES: To date, in Spain, there are no studies that have evaluated the prevalence of hypertrophic cardiomyopathy in the general population. The aim of this study was to assess the prevalence of hypertrophic cardiomyopathy in a large sample of the working population of Spain. MATERIALS AND METHODS: The study included 13,179 workers (73% men; mean age: 40 years) from 5 regions of Spain who, between May 2008 and November 2010, had a medical examination with an electrocardiogram. The workers with suggestive abnormalities in the electrocardiogram or a predisposing medical history (exertional syncope or sudden death of a family member younger than 50 years) were referred for an echocardiographic evaluation. We defined hypertrophic cardiomyopathy as a parietal thickness ≥13mm in any segment of the left ventricle. We estimated the prevalence of hypertrophic cardiomyopathy in the entire sample and in the workers without hypertension. RESULTS: A total of 1008 workers were selected for the echocardiogram, although only 496 (49.2% of those selected) of these attended the appointment. After the echocardiogram, we detected 16 cases of hypertrophic cardiomyopathy, estimating a prevalence of 0.24% for the entire sample. In the subgroup of workers with no hypertension, we observed 10 cases of hypertrophic cardiomyopathy, which corresponds to an estimated prevalence of 0.19%. CONCLUSIONS: In our sample of the working population in Spain, the estimated prevalence of hypertrophic cardiomyopathy was 0.24%. In the subgroup of patients with no hypertension, the estimated prevalence was 0.19%.

Prevalence of hypertrophic cardiomyopathy in a large sample of the Spanish working population. / Prevalencia de la miocardiopatía hipertrófica en una amplia muestra de la población laboral española.

BACKGROUND AND OBJECTIVES: To date, in Spain, there are no studies that have evaluated the prevalence of hypertrophic cardiomyopathy in the general population. The aim of this study was to assess the prevalence of hypertrophic cardiomyopathy in a large sample of the working population of Spain. MATERIALS AND METHODS: The study included 13,179 workers (73% men; mean age, 40 years) from 5 regions of Spain who, between May 2008 and November 2010, had a medical examination with an electrocardiogram. The workers with suggestive abnormalities in the electrocardiogram or a predisposing medical history (exertional syncope or sudden death of a family member younger than 50 years) were referred for an echocardiographic evaluation. We defined hypertrophic cardiomyopathy as a parietal thickness ≥13mm in any segment of the left ventricle. We estimated the prevalence of hypertrophic cardiomyopathy in the entire sample and in the workers without hypertension. RESULTS: A total of 1008 workers were selected for the echocardiogram, although only 496 (49.2% of those selected) of these attended the appointment. After the echocardiogram, we detected 16 cases of hypertrophic cardiomyopathy, estimating a prevalence of 0.24% for the entire sample. In the subgroup of workers with no hypertension, we observed 10 cases of hypertrophic cardiomyopathy, which corresponds to an estimated prevalence of 0.19%. CONCLUSIONS: In our sample of the working population in Spain, the estimated prevalence of hypertrophic cardiomyopathy was 0.24%. In the subgroup of patients with no hypertension, the estimated prevalence was 0.19%.

Clinical outcomes after tricuspid surgery : The role of previous cardiac surgery.

BACKGROUND: The aim of our study was to assess the outcomes of surgical treatment for severe tricuspid regurgitation according to whether cardiac surgery had been performed before the tricuspid valve intervention. METHODS: Between 1996 and 2013, 201 consecutive patients with severe tricuspid regurgitation underwent tricuspid surgery at our center. Patients were classified according to whether or not they had undergone previous cardiac surgery, which 33% of the sample had. Perioperative as well as long-term morbidity and mortality were analyzed. RESULTS: Mean patient age was 62.3 years. 32.8% underwent suture annuloplasty, 41.3% underwent ring annuloplasty, 15.4% received a bioprosthesis, and 10.4% received a mechanical prosthesis. There were no significant differences in perioperative mortality between the group that had not undergone previous cardiac surgery and the group that had (12.7% vs. 17.9%, respectively; p = 0.32). The long-term mortality rate (median follow-up time: 53 months) was 43.3%. Long-term survival curves showed no significant differences between the two groups (p = 0.884), and previous cardiac surgery was not a predictive factor for long-term mortality (hazard ratio = 1.211; p = 0.521). CONCLUSION: In a series of patients who underwent tricuspid valve surgery, no significant differences were observed in perioperative mortality or in long-term survival according to whether or not subjects had undergone previous cardiac surgery.

Integración de Un Sistema Robótico de Terapia Ocupacional para Extremidades Superiores con Estimulación Visual/Táctil de Los Pacientes / Integration of an Occupational-Therapy Robotic System for Upper Limbs with Visual/tactile Stimulation of Patients

Resumen: Los ejercicios tradicionales de rehabilitación de extremidades superiores tienen como objetivo principal recuperar la fuerza o rango de movimiento del área lesionada de los pacientes. Una opción alternativa que se ha presentado en los últimos años es el uso de interfaces hápticas, las cuales han mostrado ser herramientas potenciales en el apoyo de las terapias de rehabilitación. En este artículo se presenta un sistema de rehabilitación háptico de movimientos finos en extremidades superiores, cuya característica principal es que los usuarios del sistema pueden interactuar de forma visual y táctil con objetos virtuales mezclados con escenarios reales logrando con ello un ambiente de realidad aumentada. El sistema fue probado en dos etapas, ambas con sujetos que presentaban un grado de discapacidad en extremidades superiores. Los datos recopilados fueron trayectorias seguidas, errores de seguimiento y la actividad muscular obtenida por medio de electromiografía; esta información recolectada permitió analizar de forma cuantitativa el grado de avance de los pacientes. Además, se consideraron las valoraciones hechas por fisioterapeutas, concluyendo que el sistema propuesto puede ser utilizado como una herramienta viable que complementa a las terapias de rehabilitación convencionales.

Abstract: Traditional upper limb rehabilitation exercises are primarily aimed at regaining the strength or range of motion of the patients' injured area. An alternative option that has been presented in the last years is the use of haptic interfaces, which have shown their potential as tools that support rehabilitation therapies. This article presents a haptic system of rehabilitation for fine upper limb movements, whose main characteristic is that users of the system can interact in a visual and tactile fashion with virtual objects mixed with real scenarios, thereby achieving an augmented reality environment. The system was tested in two stages, both with subjects who had a degree of disability in upper limbs. The data collected were followed trajectories, follow-up errors and the muscular activity obtained by means of electromyography; the collected information enabled the analysis, in a quantitative way, of the degree of progress of the patients. In addition, the assessments made by physiotherapists were considered, concluding that the proposed system can be used as a viable complementary tool for conventional rehabilitation therapies.

Prevalencia de pluripatología y valor pronóstico del índice PROFUND en una unidad de hospitalización de Cardiología / Prevalence of comorbidities and the prognostic value of the PROFUND index in a hospital cardiology unit

Introducción. El objetivo del estudio fue conocer la prevalencia de pluripatología y la utilidad del índice PROFUND para la estratificación pronóstica de los pacientes pluripatológicos en una unidad de hospitalización de Cardiología. Pacientes y métodos. Se analizaron de forma consecutiva todos los pacientes ingresados en 2012 en el servicio de Cardiología. Se registraron las comorbilidades, estancia y mortalidad intrahospitalarias, y los índices de Charlson y PROFUND. En los pacientes pluripatológicos, se registraron además los reingresos y la mortalidad durante un año de seguimiento. Resultados. Se incluyeron 1.033 pacientes (67±13,1 años, 35% mujeres); 381 (36,9%) fueron pluripatológicos, con un índice de Charlson de 6,4±1,7 y PROFUND de 2,5±2,5. Comparados con el resto, los pluripatológicos fueron mayores (72 vs. 64 años, p<0,001), tuvieron más mortalidad (2,9% vs. 1,1%, p=0,046) y estancia intrahospitalarias (8±5,5 vs. 6±5,7 días, p<0,001) e ingresaron más por insuficiencia cardiaca (42,3% vs. 15,8%, p<0,001). El índice PROFUND se asoció de manera independiente con la mortalidad global (hazard ratio[HR]=1,13, intervalo de confianza [IC] del 95%: 1,01-1,27, p=0,034) y con la existencia de eventos adversos mayores en el seguimiento a 12 meses (HR=1,09, IC del 95%: 1,01-1,18, p=0,026). Conclusiones. Un alto porcentaje de los pacientes ingresados en Cardiología fueron pluripatológicos. Estos presentaron mayor prevalencia de factores de riesgo cardiovascular, mayor estancia y mortalidad intrahospitalarias. El índice PROFUND predijo de forma independiente la mortalidad y los acontecimientos adversos durante el seguimiento (AU)

Introduction. The aim of this study was to understand the prevalence of comorbidities and the usefulness of the PROFUND index for the prognostic stratification of patients with comorbidities in a hospital cardiology unit. Patients and methods. We consecutively analysed all patients hospitalized in 2012 in the department of cardiology. We recorded the comorbidities, length of stay, hospital mortality, Charlson indices and PROFUND indices. In the patients with comorbidities, we also recorded the readmissions and mortality during a 1-year follow-up. Results. The study included 1,033 patients (mean age, 67±13.1 years; 35% women), 381 (36.9%) of whom had comorbidities, with a mean Charlson index of 6.4±1.7 and a mean PROFUND index of 2.5±2.5. Compared with the other patients, the patients with comorbidities were older (72 vs. 64 years, p<.001), had a higher mortality rate (2.9% vs. 1.1%, p=.046) and longer hospital stays (8±5.5 vs. 6±5.7 days, p<.001) and were more often admitted for heart failure (42.3% vs. 15.8%, p<.001). The PROFUND index was independently associated with overall mortality (hazard ratio [HR], 1.13; 95% CI: 1.01-1.27; p=.034) and with the presence of major adverse events during the 12-month follow-up (HR, 1.09; 95% CI: 1.01-1.18; p=.026). Conclusions. A high percentage of patients hospitalized in the department of cardiology had comorbidities. These patients had a higher prevalence of cardiovascular risk factors, longer stays and greater hospital mortality. The PROFUND index independently predicted mortality and adverse events during the follow-up (AU)

Prevalence of comorbidities and the prognostic value of the PROFUND index in a hospital cardiology unit. / Prevalencia de pluripatología y valor pronóstico del índice PROFUND en una unidad de hospitalización de Cardiología.

INTRODUCTION: The aim of this study was to understand the prevalence of comorbidities and the usefulness of the PROFUND index for the prognostic stratification of patients with comorbidities in a hospital cardiology unit. PATIENTS AND METHODS: We consecutively analysed all patients hospitalized in 2012 in the department of cardiology. We recorded the comorbidities, length of stay, hospital mortality, Charlson indices and PROFUND indices. In the patients with comorbidities, we also recorded the readmissions and mortality during a 1-year follow-up. RESULTS: The study included 1,033 patients (mean age, 67±13.1 years; 35% women), 381 (36.9%) of whom had comorbidities, with a mean Charlson index of 6.4±1.7 and a mean PROFUND index of 2.5±2.5. Compared with the other patients, the patients with comorbidities were older (72 vs. 64 years, p<.001), had a higher mortality rate (2.9% vs. 1.1%, p=.046) and longer hospital stays (8±5.5 vs. 6±5.7 days, p<.001) and were more often admitted for heart failure (42.3% vs. 15.8%, p<.001). The PROFUND index was independently associated with overall mortality (hazard ratio [HR], 1.13; 95% CI: 1.01-1.27; p=.034) and with the presence of major adverse events during the 12-month follow-up (HR, 1.09; 95% CI: 1.01-1.18; p=.026). CONCLUSIONS: A high percentage of patients hospitalized in the department of cardiology had comorbidities. These patients had a higher prevalence of cardiovascular risk factors, longer stays and greater hospital mortality. The PROFUND index independently predicted mortality and adverse events during the follow-up.

Role of interspecies interactions in dual-species biofilms developed in vitro by uropathogens isolated from polymicrobial urinary catheter-associated bacteriuria.

Most catheter-associated urinary tract infections are polymicrobial. Here, uropathogen interactions in dual-species biofilms were studied. The dual-species associations selected based on their prevalence in clinical settings were Klebsiella pneumoniae-Escherichia coli, E. coli-Enterococcus faecalis, K. pneumoniae-E. faecalis, and K. pneumoniae-Proteus mirabilis. All species developed single-species biofilms in artificial urine. The ability of K. pneumoniae to form biofilms was not affected by E. coli or E. faecalis co-inoculation, but was impaired by P. mirabilis. Conversely, P. mirabilis established a biofilm when co-inoculated with K. pneumoniae. Additionally, E. coli persistence in biofilms was hampered by K. pneumoniae but not by E. faecalis. Interestingly, E. coli, but not K. pneumoniae, partially inhibited E. faecalis attachment to the surface and retarded biofilm development. The findings reveal bacterial interactions between uropathogens in dual-species biofilms ranged from affecting initial adhesion to outcompeting one bacterial species, depending on the identity of the partners involved.

Síndrome del dedo azul: tratamiento endovascular / Blue toe syndrome: Endovascular treatment

No disponible

Evaluación de la seguridad de la endarterectomía carotídea en nuestro servicio / Safety assessment of the carotid endarterectomy in our unit

OBJETIVO: El objetivo de este estudio es evaluar la seguridad de la endarterectomía carotídea (EAC) en pacientes sintomáticos y asintomáticos en nuestro servicio. PACIENTES Y MÉTODOS: Este estudio retrospectivo incluye un total de 266 procedimientos realizados en pacientes tanto sintomáticos como asintomáticos, con carácter programado. La seguridad se evaluó en términos de tasa de ictus/muerte e infarto agudo de miocardio (IAM) perioperatorio. RESULTADOS: Entre enero de 2005 y diciembre de 2012 se realizaron 266 EAC en 238 pacientes. La tasa de ictus/muerte global a los 30 días de la cirugía fue del 3%, siendo la de pacientes sintomáticos de un 4,5% y la de asintomáticos un 2,8%. Se observó un mayor riesgo de sangrado en pacientes tratados previamente con clopidogrel (OR: 3,85; IC: 1,05-11). CONCLUSIONES: Atendiendo a los criterios de calidad necesarios para realizar una EAC podemos concluir que, en nuestro servicio, este procedimiento es seguro y garantiza sus ventajas terapéuticas

OBJECTIVE: The aim of this study is to assess the safety of carotid endarterectomy (CEA) in symptomatic and asymptomatic patients in our department. PATIENTS AND METHODS: This retrospective study included a total of 266 programmed procedures performed in both symptomatic and asymptomatic patients. Safety was evaluated in terms of perioperative rate of stroke/death and acute myocardial infarction (AMI). RESULTS: Between January 2005 and December 2012, 266 CEAs were performed in 238 patients. The overall rate of stoke/death at 30 days after surgery was 3%, 4,5% in symptomatic patients and 2,8% in the asymptomatic cohort. An increased risk of bleeding was observed in patients previosly treated with clopidogrel (OR: 3,85 CI 1,5-11). CONCLUSIONS: Considering the quality criteria required to perform a carotid endarterectomy we can conclude that in our department, this procedure is safe and ensures its therapeutic benefits

Synapse-specific compartmentalization of signaling cascades for LTP induction in CA3 interneurons.

Inhibitory interneurons with somata in strata radiatum and lacunosum-molecular (SR/L-M) of hippocampal area CA3 receive excitatory input from pyramidal cells via the recurrent collaterals (RCs), and the dentate gyrus granule cells via the mossy fibers (MFs). Here we demonstrate that Hebbian long-term potentiation (LTP) at RC synapses on SR/L-M interneurons requires the concomitant activation of calcium-impermeable AMPARs (CI-AMPARs) and N-methyl-d-aspartate receptors (NMDARs). RC LTP was prevented by voltage clamping the postsynaptic cell during high-frequency stimulation (HFS; 3 trains of 100 pulses delivered at 100 Hz every 10s), with intracellular injections of the Ca(2+) chelator BAPTA (20mM), and with the NMDAR antagonist D-AP5. In separate experiments, RC and MF inputs converging onto the same interneuron were sequentially activated. We found that RC LTP induction was blocked by inhibitors of the calcium/calmodulin-dependent protein kinase II (CaMKII; KN-62, 10 µM or KN-93, 10 µM) but MF LTP was CaMKII independent. Conversely, the application of the protein kinase A (PKA) activators forskolin/IBMX (50 µM/25 µM) potentiated MF EPSPs but not RC EPSPs. Together these data indicate that the aspiny dendrites of SR/L-M interneurons compartmentalize synapse-specific Ca(2+) signaling required for LTP induction at RC and MF synapses. We also show that the two signal transduction cascades converge to activate a common effector, protein kinase C (PKC). Specifically, LTP at RC and MF synapses on the same SR/LM interneuron was blocked by postsynaptic injections of chelerythrine (10 µM). These data indicate that both forms of LTP share a common mechanism involving PKC-dependent signaling modulation.

Estudio comparativo de dos modos de ventilación no invasiva para retirar la asistencia respiratoria mecánica en lactantes post-operatorios de cirugía cardiovascular / Comparative study of two modalities of non-invasive ventilation for the weaning from mechanical ventilation of post-cardiovascular surgery infants

La mejor estrategia en el post-quirúrgico de cardiopatías congénitas para promover la extubación precoz y destete de asistencia respiratoria mecánica (ARM) con ventilación no invasiva (VNI) todavía no ha sido establecida. El objetivo es comparar eficacia de la presión positiva continua en la vía aérea (CPAP) vs presión positiva con dos niveles en la vía aérea (BIPAP) en la extubación electiva de estos pacientes. Es un estudio prospectivo entre el 1 de junio de 2008 y 31 marzo de 2010. Se randomizaron los pacientes para extubación electiva: modo CPAP o BIPAP. Se registraron datos demográficos y del procedimiento quirúrgico, entre otros. El fracaso de VNI fue definido como reintubación dentro de las 72 hs posteriores a la extubación o más de un criterio de intubación. Durante el periodo de estudio 1438 pacientes fueron admitidos en UCI35. En el grupo BIPAP se randomizaron 53 pacientes, de los cuales se extubaron exitosamente 49 (92%), pero 4 se reintubaron debido a falla cardiaca. En el grupo CPAP se randomizaron 46 y fallaron en la extubación 18 (39%) debido a múltiples episodios de desaturación y apneas. De éstos, 11 requirieron reintubación endotraqueal y ARM. En 7 pacientes, se pasó a modo BIPAP y permanecieron extubados, aunque el cruzamiento no fue parte del diseño de este estudio. En el destete de ARM de los pacientes post-quirúrgicos de cardiopatías congénitas, el uso de BIPAP fue más efectivo que CPAP. En esta última modalidad se presentaron mayor número de fracasos de VNI (AU)

The best strategy for early extubation and weaning from mechanical respiration (MV) with non-invasive ventilation (NIV) in post-surgical congenital heart defect patients has not been established yet. The aim of this study was to compare the efficacy of continuous positive airway pressure CPAP) vs bi-level positive airway pressure (BIPAP) in the elective extubation of these patients. A prospective study was conducted between June 1, 2008 and March 31, 2010. Patients that were candidates for elective extubation were randomized to CPAP or BIPAP. Data on demographics and surgical procedure, among others, were recorded. Failure of NIV was defined as the need for reintubation within 72 hours after extubation or more than one criterion for intubation. Over the study period, 1438 patients were admitted to ICU 35. Fifty-three patients were randomized to BIPAP, of whom 49 (92%) were successfully extubated; however, four were reintubated due to heart failure. Forty-six patients were randomized to CPAP. Extubation failed in 18 (39%) due to multiple episodes of desaturation and apneas. Eleven of 18 required endotracheal reintubation and mechanical ventilation. Seven patients were switched to BIPAP and remained extubated, although the switch was not part of the study design. In the weaning of post-surgical congenital heart defect patients from MV, BIPAP was more effective than CPAP. In the latter modality, the incidence of NIV failure was higher (AU)

Consistency of response and image recognition, pulmonary nodules.

OBJECTIVE: To investigate the effect of recognition of a previously encountered radiograph on consistency of response in localized pulmonary nodules. METHODS: 13 radiologists interpreted 40 radiographs each to locate pulmonary nodules. A few days later, they again interpreted 40 radiographs. Half of the images in the second set were new. We asked the radiologists whether each image had been in the first set. We used Fisher's exact test and Kruskal-Wallis test to evaluate the correlation between recognition of an image and consistency in its interpretation. We evaluated the data using all possible recognition levels-definitely, probably or possibly included vs definitely, probably or possibly not included by collapsing the recognition levels into two and by eliminating the "possibly included" and "possibly not included" scores. RESULTS: With all but one of six methods of looking at the data, there was no significant correlation between consistency in interpretation and recognition of the image. When the possibly included and possibly not included scores were eliminated, there was a borderline statistical significance (p = 0.04) with slightly greater consistency in interpretation of recognized than that of non-recognized images. CONCLUSION: We found no convincing evidence that radiologists' recognition of images in an observer performance study affects their interpretation on a second encounter. ADVANCES IN KNOWLEDGE: Conscious recognition of chest radiographs did not result in a greater degree of consistency in the tested interpretation than that in the interpretation of images that were not recognized.

Relation between heart beat fluctuations and cyclic alternating pattern during sleep in insomnia patients.

Insomnia is a condition that affects the nervous and muscular system. Thirty percent of the population between 18 and 60 years suffers from insomnia. The effects of this disorder involve problems such as poor school or job performance and traffic accidents. In addition, patients with insomnia present changes in the cardiac function during sleep. Furthermore, the structure of electroencephalographic A-phases, which builds up the Cyclic Alternating Pattern during sleep, is related to the insomnia events. Therefore, the relationship between these brain activations (A-phases) and the autonomic nervous system would be of interest, revealing the interplay of central and autonomic activity during insomnia. With this goal, a study of the relationship between A-phases and heart rate fluctuations is presented. Polysomnography recording of five healthy subjects, five sleep misperception patients and five patients with psychophysiological insomnia were used in the study. Detrended Fluctuation Analysis (DFA) was used in order to evaluate the heart rate dynamics and this was correlated with the number of A-phases. The results suggest that pathological patients present changes in the dynamics of the heart rate. This is reflected in the modification of A-phases dynamics, which seems to modify of heart rate dynamics.