Limitación de tratamiento de soporte vital en una Unidad de Cuidado Intensivo pediátrica chilena: 2004-2014 / Limitation of Vital Support in a Chilean Pediatric Intensive Care Unit: 2004-2014

Resumen Objetivo: Describir las frecuencias y características del proceso de Limitación de Tratamiento de So porte Vital (LTSV) en pacientes de la Unidad de Cuidados Intensivos Pediátricos (UCI) entre 2004 2014. Pacientes y Método: Estudio retrospectivo, observacional descriptivo a partir de dos registros de la UCI del Hospital Roberto del Río: 1) ficha clínica individual de seguimiento y 2) ficha de registro de indicadores de calidad incluida LTSV, ambos actualizados diariamente al iniciar la visita clínica. Desde estos registros se analizaron los casos con dilemas bioéticos en los que se propuso LTSV du rante su hospitalización en UCI ("LTSV intra-UCI"). Se menciona la población rechazada de ingresar a UCI ("LTSV pre-UCI") y los fallecidos con LTSV en cama básica. Resultados: De 7.821 ingresos a UCI en el 1,51% (118 pacientes) se establece una LTSV: ONI (Orden de No Innovación) en 78,8% de los casos, retiro de medidas terapéuticas en 14,4% y suspensión de ventilación mecánica en 6,8%. En 23,7% el diagnóstico de base fue neurológico u oncológico, para cada uno. La condición fisiopatológica predominante para una LTSV fue neurológica (39%). El tiempo de estadía en UCI triplica el promedio de estada de los egresos totales de UCI, pero es de amplia variabilidad. Conclusiones: Es factible realizar una LTSV en UCI cuando el equipo incorpora esta perspectiva al trabajo diario junto a la familia. Hay una amplia variabilidad individual en las características del proceso de LTSV, propio del ámbito de la ética clínica.

Abstract Objective: Describe the frequency and characteristics of PICU patients who undergo a process of withholding or withdrawing life-sustaining treatment (LTSV), between 2004 y 2014. Patients and Method: A retrospective, observational descriptive study, using two documents for quality assessment in the PICU of Hospital Roberto del Río: 1) daily individual patient tracking log and 2) daily record of quality indicators, including LTSV, both updated daily at the morning visit. All PICU patients with an ethical dilemma during their PICU stay in which a LTSV was proposed were included. We men tion patients rejected for admission in the ICU and those who died in basic units of the hospital with LTSV. Results: In 118 patients of 7821 PICU admissions (1,5%) we determined a LTSV: ONR (Non Resuscitation Order) for all of them, ONI (Non Innovation Order) in 78,8%, withdrawal of some therapeutics in 14,4% and withdrawal of active mechanical ventilation in 6,8%. The basic diagnosis was 23,7% for each neurologic and oncologic diseases. The predominant pathophysiologic condition leading to a LTSV was severe chronic neurologic damage (39%). The length of stay was threefold the mean PICU stay, with a large variability due to expectable individual factors when ethic decisions are involved. Conclusion: LTSV is feasible when the team is involved and this perspective is part of daily clinical analysis. The wide individual variability in the LTSV process is expectable in ethical decisions.

[Limitation of Vital Support in a Chilean Pediatric Intensive Care Unit: 2004-2014]. / Limitación de tratamiento de soporte vital en una Unidad de Cuidado Intensivo pediátrica chilena: 2004-2014.

OBJECTIVE: Describe the frequency and characteristics of PICU patients who undergo a process of withholding or withdrawing life-sustaining treatment (LTSV), between 2004 y 2014. PATIENTS AND METHOD: A retrospective, observational descriptive study, using two documents for quality assessment in the PICU of Hospital Roberto del Río: 1) daily individual patient tracking log and 2) daily record of quality indicators, including LTSV, both updated daily at the morning visit. All PICU patients with an ethical dilemma during their PICU stay in which a LTSV was proposed were included. We men tion patients rejected for admission in the ICU and those who died in basic units of the hospital with LTSV. RESULTS: In 118 patients of 7821 PICU admissions (1,5%) we determined a LTSV: ONR (Non Resuscitation Order) for all of them, ONI (Non Innovation Order) in 78,8%, withdrawal of some therapeutics in 14,4% and withdrawal of active mechanical ventilation in 6,8%. The basic diagnosis was 23,7% for each neurologic and oncologic diseases. The predominant pathophysiologic condition leading to a LTSV was severe chronic neurologic damage (39%). The length of stay was threefold the mean PICU stay, with a large variability due to expectable individual factors when ethic decisions are involved. CONCLUSION: LTSV is feasible when the team is involved and this perspective is part of daily clinical analysis. The wide individual variability in the LTSV process is expectable in ethical decisions.

Postmortem studies in the contemporary pediatric intensive care unit.

OBJECTIVES: To describe the implementation of an educational program that achieved high compliance with autopsy requests and consents in a pediatric intensive care unit. To evaluate the concordance between clinical diagnoses and autopsy findings and to identify patient characteristics in which postmortem diagnosis elucidated the primary disease process. DESIGN: Retrospective, observational study. SETTING: A pediatric intensive care unit in a tertiary care teaching hospital. PATIENTS: All pediatric intensive care unit patients with autopsy reports from 2000 to 2005. INTERVENTIONS: An educational program and protocol were initiated in 1995-1996 to raise awareness and formalize the process for autopsy request. From 2000 to 2005, data were collected from medical records and pathology department autopsy reports. Premortem and postmortem diagnoses were compared utilizing the modified Goldman's classification. The associations of Goldman's classification with age of patients and length of stay were explored. MEASUREMENTS AND MAIN RESULTS: After the educational program was instituted, an autopsy rate of >50% was attained compared to 20%-30% in previous years (p < .05). From 2000 to 2005, 139 autopsies were performed. In 111 patients (79.8%), complete concordance of premortem and postmortem diagnoses was found; in 22 cases (16%), there was no concordance and in six cases the postmortem studies failed to explain the mechanism of death. Autopsies provided new and pertinent findings in 47.5% of all studies, with histologic information accounting for 58% of them. A relationship between short length of stay and the presence of autopsy findings elucidating the main disease process was found (p < .05). CONCLUSIONS: It is feasible to produce a sustainable increase in the rate of postmortem studies within an organization. Autopsy results added new information to almost half of the patients, particularly those who died soon after admission. A pediatric intensive care unit strategy to increase and maintain compliance with autopsy requests is an important practice with favorable clinical and educational repercussions.

Oxidative stress as a novel target in pediatric sepsis management.

Sepsis with secondary multisystem organ dysfunction syndrome is the leading cause of death in the pediatric intensive care unit. Increased reactive oxygen species may influence circulating and endothelial cells, contributing to inflammatory tissue injury and explaining the tissue hypoxia paradigm based on microvascular dysfunction. An impaired mitochondrial cellular oxygen utilization, rather than inadequate oxygen delivery, was claimed to play a more important role in the development of multisystem organ dysfunction syndrome. Anyway, it seems plausible that reactive oxygen species can mediate the pathophysiologic processes occurring in sepsis. However, the consensus guidelines for the management of patients with these conditions do not include the enhancement of antioxidant potential. Therefore, further investigation is needed to support interventions aimed to attenuate the severity of the systemic compromise by abrogating the mechanism of oxidative damage. Antioxidant supplementation currently in use lacks a mechanistic support. Specific pharmacologic targets, such as mitochondria or Nicotinamide Adenine Dinucleotide Phosphate-Oxidase (NADPH) oxidase system, need to be explored. Furthermore, the early recognition of oxidative damage in these seriously ill patients and the usefulness of oxidative stress biomarkers to define a cut point for more successful therapeutic antioxidant interventions to be instituted would offer a new strategy to improve the outcome of critically ill children.

Evaluación del apoyo afectivo en estudiantes de medicina con la prueba de Apgar de Smilksteina / Assesment of effect support in students of medicine through Smilkstein's Apgar tests

La evaluación rápida del apoyo afectivo individual es necesaria y útil en la práctica médica. Esta se ha hecho, en adolescentes, aplicando el Apgar Familiar y el de las amistades de Smilkstein. El presente trabajo mide, con estos instrumentos, el apoyo familiar y de las amistades en estudiantes de medicina, quienes por su sistema de estudio se ven sometidos a una fuerte presión curricular. Ambos Apgar se aplicaron a 499 alumnos correspondientes al 90,7% del total de 550 de la División de Ciências Médicas Occidente de la Universidad de Chile. El 39,1% de ellos eran menores de 21 años (n = 195) y el 40% (n = 200) eran mujeres. Las encuestas se realizaron entre Octubre de 1986 y Mayo de 1987. El Apgar satisfactorio (8 puntos o más) se encontró en el 59,9% de los casos encuestados en AF y AA. El intermedio (4-7 puntos) fue 32,3% en el Apgar familiar y 35,5% en el Apgar de las amistades. El bajo (-4 puntos) fue 7,8% en Apgar familiar y 4,6% en Apgar de las amistades (Diferencia significativa). El Apgar familiar bajo fue 9,4% en hombres y 5,5% en mujeres. El Apgar familiar bajo fue más frecuente que el Apgar de amistades bajo en cinco de los siete cursos y dos cursos destacaron por tener más de 10% de Apgar familiar bajo. Las mujeres tuvieron frecuencia significativamente más alta de Apgar de amistades satisfactorio. En total de 499 estudiantes un 19,2% tuvo Apgar familiar inferior a 6 puntos; cifra significativamente menor que la encontrada en adolescentes del área Oriente de Santiago. Se post