Secondary infections in critically ill patients admitted with COVID-19 in Bogotá, Colombia. Observational cohort study / Infecciones secundarias en pacientes críticos ingresados con COVID-19 en Bogotá, Colombia. Estudio observacional de cohorte

Abstract Introduction: The presence of secondary infections in critically ill patients and antibiotic resistance are often determining factors in the clinical evolution of these patients. Objective: To describe the pathogens isolated in blood cultures and tracheal secretion cultures in ICU patients with COVID-19 and to evaluate the association between the presence of secondary infections and 60-day mortality. Methods: Retrospective analytical cohort study conducted in 273 adults admitted to the ICU with COVID-19 at the Subred Integrada de Servicios de Salud del Sur - Hospital El Tunal, Bogotá, Colombia between April and December 2020. Data from records of blood or tracheal secretion cultures were collected. A bivariate analysis was performed using a Cox proportional-hazards regression model to assess the association between the development of secondary infections and 60-day mortality. Results: At least one positive blood culture was reported in 96/511 patients (18.8%). Of the 214 blood cultures performed within 48 hours after ICU admission, 7.7% were positive. A total of 127 germs were isolated from blood cultures - mostly gram-negative bacteria (61.4%) - followed by fungi (25.2%). Additionally, 39.5% were multidrug-resistant, and carbapenem resistance was the most common antibiotic resistance pattern (33.3% of all gram-negative bacteria isolates). Finally, in this cohort, the presence of secondary infections was not associated with 60-day mortality (HR: 1.012, 95%CI: 0.7211.420; p= 0.946). Conclusions: Although the prevalence of superinfection was moderately high, the prevalence of coinfection was low. Gram-negative bacteria were predominant, and almost one third of the germs were multidrug-resistant.

Resumen Introducción: La presencia de infecciones secundarias en pacientes críticos y la resistencia a los antibióticos suelen ser factores determinantes en la evolución clínica de estos pacientes. Objetivo: Describir los patógenos aislados en cultivos de sangre y de secreciones traqueales en pacientes de la UCI con COVID-19 y evaluar la relación entre la presencia de infecciones secundarias y la mortalidad a 60 días. Métodos: Estudio de cohorte analítico retrospectivo realizado en 273 adultos ingresados a la UCI con COVID-19 de la Subred Integrada de Servicios de Salud del Sur - Hospital El Tunal, Bogotá, Colombia entre abril y diciembre de 2020. Se obtuvieron los datos de los registros de cultivos en sangre y en secreciones de la tráquea. Se llevó a cabo un análisis bivariado mediante un modelo de riesgos proporcionales o regresión de Cox para evaluar la relación entre el desarrollo de infecciones secundarias y la mortalidad a 60 días. Resultados: Se reportó al menos un cultivo en sangre positivo en 96/511 (18.8%). De los 214 cultivos de sangre realizados dentro de las 48 horas siguientes al ingreso a la UCI, 7,7% resultaron positivos. Se aislaron en total 127 gérmenes en los cultivos en sangre, en su mayoría bacterias gramnegativas (61,4%) - seguido de hongos (25,2%). Adicionalmente, 39.5% fueron multirresistentes, siendo la resistencia los carbapenémicos el patrón de resistencia a los antibióticos más frecuente (33,3% de todos los aislados de bacterias gramnegativas). Finalmente, la presencia de infecciones secundarias en esta cohorte no se asoció con mortalidad a 60 días (HR: 1,012, IC 95%: 0,721-1,420; p= 0,946). Conclusiones: A pesar de que la prevalencia de super infecciones fue moderadamente alta, la prevalencia de coinfección fue baja. Las bacterias gramnegativas fueron las predominantes y casi un tercio de los gérmenes eran multirresistentes.

Application of the pulmonary embolism rule-out criteria (PERC rule) and age-adjusted D-Dimer in patients undergoing computed tomography pulmonary angiography for diagnosis of pulmonary embolism.

Background: Diagnosis of pulmonary embolism (PE) constitutes a challenge for practitioners. Current practice involves use of pre-test probability prediction rules. Several strategies to optimize this process have been explored. Objectives: To explore whether application of the pulmonary embolism rule-out criteria (PERC rule) and age-adjusted D-dimer (DD) would have reduced the number of computed tomography pulmonary angiography (CTPA) examinations performed in patients with suspected PE. Methods: A retrospective cross-sectional study of adult patients taken for CTPA under suspicion of PE in 2018 and 2020. The PERC rule and age-adjusted DD were applied. The number of cases without indications for imaging studies was estimated and the operational characteristics for diagnosis of PE were calculated. Results: 302 patients were included. PE was diagnosed in 29.8%. Only 27.2% of 'not probable' cases according to the Wells criteria had D-dimer assays. Age adjustment would have reduced tomography use by 11.1%, with an AUC of 0.5. The PERC rule would have reduced use by 7%, with an AUC of 0.72. Conclusions: Application of age-adjusted D-dimer and the PERC rule to patients taken for CTPA because of suspected PE seems to reduce the number of indications for the procedure.

Contexto: O diagnóstico de embolia pulmonar (EP) representa um desafio para o profissional. A prática atual envolve o uso de modelos de previsão de probabilidade pré-teste e, para otimizar esse processo, várias estratégias têm sido exploradas. Objetivos: Investigar se a aplicação dos critérios de exclusão de EP (pulmonary embolism rule-out criteria, PERC) e do D-dímero (DD) ajustado para idade diminui o número de angiografias computadorizadas (ATCs) pulmonares realizadas em pacientes com suspeita de EP. Métodos: Estudo transversal retrospectivo com pacientes adultos submetidos a ATC pulmonar com suspeita de EP em 2018 e 2020. Foram aplicados os critérios PERC e o DD ajustado para idade. Foi estimado o número de casos não indicados para exames de imagem, e foram calculadas as características operacionais para o diagnóstico de EP. Resultados: Foram incluídos 302 pacientes, dos quais 29,8% apresentaram diagnóstico de EP. Apenas 27,2% dos casos não prováveis ​​de acordo com os critérios de Wells apresentaram DD; o ajuste implicou em uma diminuição de ACTs de 11,1%, com área sob a curva de 0,5. Os critérios PERC diminuiriam em 7%, com área sob a curva de 0,72. Conclusões: A aplicação do DD ajustado para idade e dos critérios PERC em pacientes submetidos a ATC pulmonar por suspeita de EP parece diminuir a indicação para tais exames.

Ferritin as a biomarker in inpatients with suspected COVID-19 / Ferritina como biomarcador en pacientes hospitalizados con sospecha de COVID-19

Abstract Introduction: Due to the clinical heterogeneity of COVID-19, biomarkers must be used to confirm the disease's diagnosis and determine its prognosis. Objective: To assess the performance of ferritin as a diagnostic biomarker in cases of suspected diagnosis of COVID-19 in inpatients and as a prognostic biomarker in those with a confirmed diagnosis. Materials and methods: Multicenter, prospective, observational study conducted in 711 adult patients hospitalized between April and November 2020 in three quaternary care hospitals in Bogotá D.C., Colombia, due to suspected COVID-19. Based on ferritin levels on hospital admission, ROC curves were created for three outcomes: diagnosis, admission to the intensive care unit (ICU), and death. The operating characteristics of this biomarker were calculated for each outcome, and a multivariate analysis was carried out using a linear regression model to evaluate the association between ferritin levels and each outcome. Results: COVID-19 diagnosis was confirmed in 592 patients, of whom 160 (27.02%) were admitted to the ICU and 107 (18.07%) died. The areas under the ROC curve (AUC) for diagnosis, ICU admission, and death were 0.67 (95%CI: 0.62-0.73), 0.58 (95%CI: 0.57-0.67), and 0.56 (95%CI: 0.50-0.63), respectively. In the bivariate analysis, ferritin levels were significantly associated with diagnosis (p=0.003) and admission to the ICU (p<0.001), but not with mortality (p=0.326). In the multivariate analysis, ferritin was only significantly associated with admission to the ICU (p=0.009). Conclusions: Ferritin showed poor and moderate performance as a prognostic and a diagnostic biomarker, respectively. Therefore, neither the diagnosis of patients with suspected COVID-19, nor the prognosis of those with a confirmed diagnosis can be determined based only on serum ferritin levels.

Resumen Introducción. La COVID-19 es una enfermedad en la que, debido a su heterogeneidad clínica, es necesario usar biomarcadores para confirmar su diagnóstico y establecer su pronóstico. Objetivo. Evaluar el desempeño de la ferritina como biomarcador de diagnóstico en casos de sospecha diagnóstica de COVID-19 en pacientes hospitalizados y como biomarcador de pronóstico en aquellos con diagnóstico confirmado. Materiales y métodos. Estudio observacional prospectivo multicéntrico realizado en 711 pacientes adultos hospitalizados entre abril y noviembre de 2020 en tres hospitales de cuarto nivel de Bogotá D.C., Colombia, por sospecha de COVID-19. Con base en los niveles de ferritina al ingreso a hospitalización se construyeron curvas ROC para tres desenlaces: diagnóstico, ingreso a unidad de cuidados intensivos (UCI) y muerte. Se calcularon las características operativas de este biomarcador para cada desenlace y se realizó un análisis multivariado mediante un modelo de regresión lineal para evaluar la asociación entre los niveles de ferritina y cada desenlace. Resultados. El diagnóstico de COVID-19 se confirmó en 592 pacientes; de estos, 160 (27.02%) fueron trasladados a UCI y 107 (18.07%) fallecieron. Las áreas bajo la curva ROC (AUC) para diagnóstico, ingreso a UCI y muerte fueron 0.67 (IC95%: 0.62-0.73), 0.58 (IC95%: 0.57-0.67) y 0.56 (IC95%: 0.50-0.63), respectivamente. En el análisis bivariado los niveles de ferritina se asociaron significativamente con diagnóstico (p=0.003) e ingreso a UCI (p<0.001), pero no con mortalidad (p=0.326). En el análisis multivariado la ferritina solo se asoció significativamente con ingreso a UCI (p=0.009). Conclusiones. La ferritina mostró un desempeño pobre como biomarcador pronóstico y moderado como biomarcador diagnóstico. Por tanto, ni el diagnóstico de los pacientes con sospecha de COVID-19, ni el pronóstico de aquellos con un diagnóstico confirmado pueden determinarse únicamente a partir de los niveles séricos de ferritina.

Application of the pulmonary embolism rule-out criteria (PERC rule) and age-adjusted D-Dimer in patients undergoing computed tomography pulmonary angiography for diagnosis of pulmonary embolism / Aplicação dos critérios PERC e do D-Dímero ajustado para idade em pacientes submetidos a angiotomografia pulmonar para o diagnóstico de embolia pulmonar

Abstract Background Diagnosis of pulmonary embolism (PE) constitutes a challenge for practitioners. Current practice involves use of pre-test probability prediction rules. Several strategies to optimize this process have been explored. Objectives To explore whether application of the pulmonary embolism rule-out criteria (PERC rule) and age-adjusted D-dimer (DD) would have reduced the number of computed tomography pulmonary angiography (CTPA) examinations performed in patients with suspected PE. Methods A retrospective cross-sectional study of adult patients taken for CTPA under suspicion of PE in 2018 and 2020. The PERC rule and age-adjusted DD were applied. The number of cases without indications for imaging studies was estimated and the operational characteristics for diagnosis of PE were calculated. Results 302 patients were included. PE was diagnosed in 29.8%. Only 27.2% of 'not probable' cases according to the Wells criteria had D-dimer assays. Age adjustment would have reduced tomography use by 11.1%, with an AUC of 0.5. The PERC rule would have reduced use by 7%, with an AUC of 0.72. Conclusions Application of age-adjusted D-dimer and the PERC rule to patients taken for CTPA because of suspected PE seems to reduce the number of indications for the procedure.

Resumo Contexto O diagnóstico de embolia pulmonar (EP) representa um desafio para o profissional. A prática atual envolve o uso de modelos de previsão de probabilidade pré-teste e, para otimizar esse processo, várias estratégias têm sido exploradas. Objetivos Investigar se a aplicação dos critérios de exclusão de EP (pulmonary embolism rule-out criteria, PERC) e do D-dímero (DD) ajustado para idade diminui o número de angiografias computadorizadas (ATCs) pulmonares realizadas em pacientes com suspeita de EP. Métodos Estudo transversal retrospectivo com pacientes adultos submetidos a ATC pulmonar com suspeita de EP em 2018 e 2020. Foram aplicados os critérios PERC e o DD ajustado para idade. Foi estimado o número de casos não indicados para exames de imagem, e foram calculadas as características operacionais para o diagnóstico de EP. Resultados Foram incluídos 302 pacientes, dos quais 29,8% apresentaram diagnóstico de EP. Apenas 27,2% dos casos não prováveis ​​de acordo com os critérios de Wells apresentaram DD; o ajuste implicou em uma diminuição de ACTs de 11,1%, com área sob a curva de 0,5. Os critérios PERC diminuiriam em 7%, com área sob a curva de 0,72. Conclusões A aplicação do DD ajustado para idade e dos critérios PERC em pacientes submetidos a ATC pulmonar por suspeita de EP parece diminuir a indicação para tais exames.

Profilaxis para sangrado gastrointestinal en pacientes del servicio de medicina interna de un hospital universitario / Gastrointestinal bleeding prophylaxis in internal medicine patients of a univeristy hospital

Introducción: Los medicamentos antiulcerosos son utilizados frecuentemente en pacientes hospitalizados, sin embargo, a menudo este uso no está indicado. Objetivo: Describir la frecuencia de prescripción e indicación de medicamentos para prevenir el sangrado gastrointestinal en pacientes hospitalizados. Materiales y métodos: Estudio de corte trasversal, descriptivo, prospectivo del servicio de Medicina Interna de la Sociedad de Cirugía de Bogotá- Hospital de San José de Bogotá, Colombia. Se excluyeron pacientes con diagnóstico de sangrado gastrointestinal o antecedente de alergia a los medicamentos antiulcerosos. Se recolectaron datos demográficos, así como fármacos prescritos. Se determinó si la indicación del fármaco era adecuada y se identificó el tipo de error de prescripción. Resultados: Se incluyeron 179 pacientes, 102 (57%) mujeres. Promedio de edad de 61,3 años (±20,2). El principal diagnóstico de ingreso fue enfermedad infecciosa 76 (42,4%). Del total de pacientes, 165 (92,17%) recibieron medicamento para prevención del sangrado gastrointestinal. La indicación fue adecuada en 75 pacientes (41,89%). El error más frecuente fue el uso en pacientes de bajo riesgo de sangrado, 101 (97,1%). Conclusión: Un alto porcentaje de los pacientes recibió medicación para la prevención del sangrado gastrointestinal. En aproximadamente la mitad de estos no estaba indicada.

Introduction: Anti-ulcer medications are frequently used in hospitalized patients, yet their use is not usually indicated. Objective: To describe the frequency of prescription and indication of medications to prevent gastrointestinal bleeding in hospitalized patients. Materials and methods: A cross-sectional, descriptive, prospective study was carried out in the Internal Medicine service of the Surgery Society of Bogota-San Jose Hospital of Bogota (Colombia). Excluded patients were those with either a gastrointestinal bleeding diagnosis or a history of allergy to anti-ulcer medications. Demographic data and information regarding prescribed medications were collected. It was determined whether the medicine indication was adequate and the type of prescription error was identified. Results: 179 patients were included in the study, 57% (102) of which were women. The average age was 61.3 (±20.2) years old. Infectious disease was the main admission diagnosis (76; 42.4%). A 92.17% (165) of the total number of patients received medications to prevent gastrointestinal bleeding. This indication was adequate for 75 (41.89%) patients. The most frequent error was their use in bleeding low-risk patients (101; 97.1%). Conclusion: A high percentage of patients received medication to prevent gastrointestinal bleeding. However, in about half of these patients it was not indicated.

Early warning scores to identify the risk of clinical worsening or death in patients hospitalized for COVID-19

Background: identifying patients at risk for negative outcomes is key for performing a timely triage and adapting the care intensity for patients with COVID-19. Early warning scores are rules that alert to the risk of adverse outcomes during hospitalization. We sought to validate the modified NEWS, NEWS-2 and COVID-19 Severity Index (CSI). Methods: a prospective observational multicenter study of patients hospitalized for CO VID-19 at three quaternary care hospitals in Bogotá, Colombia, between April and November 2020. The operating characteristics and areas under the ROC curve were calculated. Results: 711 patients were included, in whom the AUC for death was 0.68, 0.58 and 0.68, and for ICU admission was 0.61, 0.63 and 0.66 for mNEWS, NEWS-2 and CSI, respectively. The CSI had the greatest sensitivity for ICU admission or death (87.6 and 90.0%) and NEWS-2 had the greatest specificity (76.8 and 75.5%). Conclusions: the three early warning scores had a low to moderate performance in pre dicting ICU admission or death in patients hospitalized for COVID-19. (Acta Med Colomb 2022; 47. DOI:https://doi.org/10.36104/amc.2022.2225).

Antecedentes: la identificación de los pacientes con riesgo de desenlaces negativos es clave para realizar un triage oportuno y adecuar la intensidad de los cuidados en los pacientes con COVID-19. Las puntuaciones de alerta temprana son reglas para advertir el riesgo de desenlaces adversos durante la hospitalización. Buscamos validar el NEWS modificado, NEWS-2 y COVID-19 Severity Index. Metodología: estudio observacional, prospectivo, multicéntrico con pacientes hospitalizados por COVID-19 en tres hospitales de cuarto nivel en Bogotá (Colombia), entre abril y noviembre de 2020. Se calcularon las características operativas y áreas bajo la curva ROC. Resultados: se contó con 711 pacientes entre los cuales el AUC para muerte fue 0.68, 0.58 y 0.68, y para ingreso a UCI de 0.61, 0.63 y 0.66 para NEWSm, NEWS-2 y CSI respectivamente. El CSI alcanzó la mayor sensibilidad para ingreso a UCI o muerte (87.6 y 90.0%) y la mayor especificidad fue el NEWS-2 (76.8 y 75.5%). Conclusiones: las tres puntuaciones de alerta temprana mostraron un desempeño bajo a moderado para la predicción del ingreso a UCI o muerte en pacientes hospitalizados por COVID-19. (Acta Med Colomb 2022; 47. DOI:https://doi.org/10.36104/amc.2022.2225).

Asociación entre hiponatremia, mortalidad y estancia hospitalaria en pacientes con falla cardíaca descompensada / Association between hyponatremia, mortality and hospitalization in patients with acute decompensated Heart Failure / Associação entre hiponatremia, mortalidade e internação hospitalar em pacientes com insuficiência cardíaca descompensada

Introducción. La hiponatremia es la alteración electrolítica más frecuente en pacientes con falla cardíaca crónica, que afecta hasta el 28% de pacientes en el ingreso hospilatario. Se ha demostrado que es un predictor independiente de mortalidad, estancia prolongada y rehospitalización. El objetivo es describir la frecuencia de hiponatremia en pacientes con falla cardíaca descompensada y su relación con la estancia hospitalaria y mortalidad. Metodología. Cohorte prospectiva en pacientes hospitalizados por el servicio de Medicina Interna en un hospital de cuarto nivel de Bogotá, Colombia, con diagnóstico de falla cardíaca descompensada entre abril de 2011 y marzo de 2012. Se midió el sodio al ingreso, a las 72 horas y al día séptimo de hospitalización. Se evaluó la relación de la hiponatremia al ingreso con la estancia hospitalaria y la mortalidad intrahospitalaria a 30 días. Resultados. Se incluyeron 162 pacientes, con promedio de edad de 72 años, 52.5% hombres. Cuarenta y uno (25.3%) presentaron hiponatremia al ingreso. Entre los pacientes que presentaron sodio normal al ingreso, 6 presentaron hiponatremia a las 72 horas y 2 a los 7 días. La mortalidad intrahospitalaria en la población total fue 9.2%, en el grupo de hiponatremia 12.2%, y 8.2% en los que no la tuvieron (p= 0.45). El promedio de estancia hospitalaria fue superior en los pacientes con hiponatremia, 6.6 vs. 8.4 días (p= 0.12). Discusión. La incidencia de hiponatremia al ingreso en este grupo de pacientes fue semejante a la reportada en la literatura. Conclusiones. Existe una tendencia hacia una mayor mortalidad y estancia hospitalaria en pacientes con hiponatremia, aun cuando no fue estadísticamente significativa. Cómo citar. Diaztagle-Fernández JJ, Chaves-Saltiago WG, Sprockel-Díaz JJ, Acevedo-Velasco AD, Rodríguez-Benítez FH, Benavides-Solarte MF, et al. Asociación entre hiponatremia, mortalidad y estancia hospitalaria en pacientes con falla cardíaca descompensada. MedUNAB. 2019;22(3), 294-303. doi: 10.29375/01237047.3497

Introduction. Hyponatremia is the most common electrolyte disorder in patients with chronic heart failure affecting up to 28% of patients at admission. It has been shown to be an independent predictor of mortality, extended length of hospital stay and rehospitalization. The objective is to evaluate the presence of hyponatremia in patients with decompensated heart failure and describe its relationship with length of hospital stay and mortality. Methodology. A prospective cohort study in patients hospitalized at internal medicine service at a high level of complexity hospital in Bogotá, Colombia diagnosed with decompensated heart failure between April 2011 and March 2012. Sodium was measured on admission, 72 hours and at the seventh day of hospitalization. We evaluated the association between hyponatremia at hospital admission, mortality at 30 days and length of hospital stay. Results. 162 patients were included with an average age of 72 years, 52.5% male. Forty-one (25.3%) had hyponatremia at admission. Among the patients with normal sodium at admission, 6 had hyponatremia at 72 hours and 2 at the seventh day. Inhospital mortality in the total population was 9.2%, in the hyponatremia group 12.2%, and 8.2% in those who did not have it (p = 0.45). The average length of hospital stay was higher in patients with hyponatremia, 6.6 vs 8.4 days (p = 0.12). Discussion. The incidence of hyponatremia at admission in this group of patients was similar to that reported in the literature. Conclusions. The results showed a trend towards higher mortality and hospital stay in patients with hyponatremia, even though it was not statistically significant. Cómo citar. Diaztagle-Fernández JJ, Chaves-Saltiago WG, Sprockel-Díaz JJ, Acevedo-Velasco AD, Rodríguez-Benítez FH, Benavides-Solarte MF, et al. Asociación entre hiponatremia, mortalidad y estancia hospitalaria en pacientes con falla cardíaca descompensada. MedUNAB. 2019;22(3), 294-303. doi: 10.29375/01237047.3497

Introdução. A hiponatremia é o desequilíbrio hidroeletrolítico mais frequente em pacientes com insuficiência cardíaca crônica, que afeta até 28% dos pacientes internados. Demonstrou ser um preditor independente de mortalidade, permanencia prolongada e re-internação. O objetivo é descrever a frequência de hiponatremia em pacientes com insuficiência cardíaca descompensada e sua relação com internação hospitalar e mortalidade. Metodologia. Coorte prospectiva em pacientes internados pelo serviço de Medicina Interna em um hospital de quarto nível em Bogotá, Colômbia, com diagnóstico de insuficiência cardíaca descompensada, entre abril de 2011 e março de 2012. Foi medido o sódio na admissão, às 72 horas e no sétimo dia de internação. Foi avaliada a relação de hiponatremia na admissão com internação e a mortalidade hospitalar aos 30 dias. Resultados. Foram incluídos 162 pacientes, com idade média de 72 anos, 52,5% homens. Quarenta e um (25,3%) apresentaram hiponatremia na admissão. Entre os pacientes que apresentaram sódio normal na admissão, seis apresentaram hiponatremia às 72 horas, e dois aos sete dias. A mortalidade hospitalar na população total foi de 9,2%, no grupo de hiponatremia 12,2% e 8,2% naqueles que não apresentaram (p = 0,45). O tempo médio de internação foi maior nos pacientes com hiponatremia, 6,6 vs. 8,4 dias (p = 0,12). Discussão. A incidência de hiponatremia na admissão nesse grupo de pacientes foi semelhante à relatada na literatura. Conclusões. Existe uma tendência de maior mortalidade e permanência hospitalar em pacientes com hiponatremia, mesmo que não tenha sido estatisticamente significante. Cómo citar. Diaztagle-Fernández JJ, Chaves-Saltiago WG, Sprockel-Díaz JJ, Acevedo-Velasco AD, Rodríguez-Benítez FH, Benavides-Solarte MF, et al. Asociación entre hiponatremia, mortalidad y estancia hospitalaria en pacientes con falla cardíaca descompensada. MedUNAB. 2019;22(3), 294-303. doi: 10.29375/01237047.3497

Aplicación de las escalas de estratificación del riesgo en el diagnóstico de los síndromes coronarios agudos / Implementation of risk stratification scales in the diagnosis of acute coronary syndromes

Resumen Introducción: El dolor torácico es uno de los principales motivos de consulta en el servicio de urgencias. Diferentes escalas de riesgo han sido evaluadas en los pacientes con dolor torácico. El objetivo del presente estudio es comparar el desempeño diagnóstico de las escalas de riesgo en los pacientes con dolor torácico y sospecha de síndrome coronario agudo. Métodos: Estudio de pruebas diagnósticas que incluyó pacientes mayores de 18 años con dolor torácico y sospecha de síndrome coronario agudo. El estándar de referencia fue alguna prueba de estratificación coronaria invasiva o no invasiva y la prueba índice la constituyó la puntuación de las escalas de riesgo TIMI, GRACE, CARdiac, Florencia, Sanchis y HEART. Se calcularon las características operativas para diferentes puntos de corte y se compararon las áreas bajo la curva ROC. Resultados: Se incluyeron 249 pacientes, 143 (57,4%) fueron de sexo masculino, 65,3 años de edad media; 73 (29,3%) fueron anginas inestables, 79 (31,7%) presentaron infartos agudos de miocardio sin elevación del ST y a 97 (39%) se les descartó la enfermedad coronaria. Las escalas HEART y TIMI mostraron el mejor rendimiento diagnóstico con un área bajo la curva de 0,75 (IC del 95% 0,69-0,81) y 0,71 (IC del 95% 0,65-0,77). Las áreas bajo la curva de Florencia, CARdiac, GRACE, y Sanchis fueron 0,64 (IC 95% 0,57-0,71), 0,63 (IC 95% 0,57-0,69), 0,62 (IC 95% 0,55-0,69), y 0,62 (IC 95% 0,55-0,69), respectivamente. Conclusiones: En una población de pacientes con alta probabilidad para el síndrome coronario agudo, las escalas HEART y TIMI mostraron una mayor capacidad para discriminar el diagnóstico del síndrome coronario agudo.

Abstract Introduction: Chest pain is one of the main reasons for consultation in the emergency room. Several risk scales have been assessed in patients with chest pain. The motivation of this study is to compare the diagnostic performance of risk scales in patients with chest pain and suspicion of acute coronary syndrome. Methods: Study of diagnostic tests that included patients over the age of 18 with chest pain and suspicion of acute coronary syndrome. The reference standard was an invasive or noninvasive coronary stratification test and the index test consisted of the score in risk scales TIMI, GRACE, CARdiac, Florencia, Sanchis and HEART. Operative characteristics for different cut points were calculated and the areas under the ROC curve were compared. Results: The study included 249 patients, of whom 143 (57.4%) were male, average age was 65.3 years; 73 (29.3%) were unstable anginas; 79 (31.7%) showed acute myocardial infarctions without ST elevation and for 97 (39%) coronary disease was ruled out. HEART and TIMI scales revealed the best diagnostic performance with a low area under the curve of 0.75 (CI of 95% 0.69-0.81) and 0.71 (CI of 95% 0.65-0.77). Areas under the curve for Florencia, CARdiac, GRACE, and Sanchis were 0,64 (CI 95% 0.57-0.71), 0.63 (CI 95% 0.57-0.69), 0.62 (CI 95% 0.55-0.69), and 0.62 (CI 95% 0.55-0.69), respectively. Conclusions: In a patient population with high probability for acute coronary syndrome, HEART and TIMI scales showed a greater ability to discriminate the diagnosis of acute coronary syndrome.

Medidas de desempeño de la calidad de atención en pacientes con infarto agudo de miocardio con elevación ST en el hospital de San José de Bogotá, 2014 / Performance measures in quality of care of patients with acute myocardial infarction with ST elevation in hospital of San José of Bogotá

RESUMEN Introducción: el infarto agudo de miocardio con elevación del ST, es una entidad con alto impacto en mortalidad en la población mundial. Es indispensable un oportuno diagnóstico e inicio de terapia de reperfusión de forma eficaz. Objetivo: reevaluar las medidas de desempeño en el manejo del infarto de miocardio con elevación del segmento ST. Materiales y método: estudio descriptivo prospectivo de serie de casos recolectados durante seis meses en el 2014, se revisaron los pacientes que tenían diagnóstico de infarto agudo de miocardio con elevación del ST y se consignaron sus características mas las diferentes medidas de desempeño de la calidad de atención en el Hospital San José. Resultados: se incluyeron 26 pacientes, de los cuales 19 llegaron a ventana siendo estos trombolizados. La mediana del tiempo puerta electrocardiograma fue de 16 minutos, y del tiempo puerta aguja 57 minutos. La adherencia fue del 100% para los betabloqueadores, acido acetilsalicílico y los inhibidores de la enzima convertidora de angiotensina, mientras que la consejería de toma de tensión arterial ambulatoria y rehabilitación cardiaca fue del 86,9% y 82,6% respectivamente. Por otro lado, solo el 8,6% de los pacientes cumplieron con la toma de niveles de lípidos y 62,5% tuvieron consejería para abandono de tabaco. La mortalidad hospitalaria fue 8,7%. Conclusiones: se encontró una alta tasa de cumplimiento de las medidas de desempeño en el manejo del infarto agudo de miocardio con elevación del ST, excepto en la medición de los niveles de lípidos. Se evidencio un moderado retroceso en los tiempos de intervención en el diagnóstico y en implementación de una terapia farmacológica de reperfusión (tiempo puerta-electrocardiograma y tiempo puerta aguja) manteniéndose las mismas tasas de mortalidad. MÉD.UIS. 2016;29(3):27-32.

ABSTRACT Introduction: acute myocardial infarction with ST elevation is an entity that has a high impact on mortality worldwide. Early diagnosis and starting an effective reperfusion therapy are indispensable. Objective: to reevaluated the performance measures for the management of myocardial infarction. Methods: 6-month from 2014 descriptive, prospective case series study of patients diagnosed with acute myocardial infarction with ST elevation were reviewed and their characteristics and the different performance measures of the quality of care were recorded. Results: 26 patients were included, 19 of which received thrombolytic therapy, all of those in window. The median door-toEKG time was 16 minutes, and door-needle time was 57 minutes. Discharge orders had 100% adherence to beta-blockers, ASA, and ACE inhibitors; 86.9% and 82.6% to ambulatory blood pressure counseling and cardiac rehabilitation respectively; in the other side, only 8.6% had lipid levels measurements; and 62.5% had a tobacco counseling. Hospital mortality was 8.7%. Conclusions: a high rate of fulfillment of the measures to manage acute myocardial infarction with ST elevation was found, except for the measurement of lipid levels. A slight increase was observed in intervention times in the diagnosis and implementation of a drug therapy (reperfusion) (door-to-EKG time and door-needle time) while maintaining the same mortality rates. MÉD.UIS. 2016;29(3):27-32.