[Electrode position in elective electrical cardioversion of atrial fibrillation. A randomized study]. / Estudio aleatorizado sobre la posición de electrodos en la cardioversión eléctrica electiva de la fibrilación auricular.

AIM: To compare the effectiveness of left anteroposterior (A-P) and apex-anterior (A-A) electrode position in the electrical cardioversion (ECV) of patients with atrial fibrillation (AF). DESIGN: Randomized clinical trial. LOCATION: ICU of a second-level hospital. PATIENTS AND METHODS: Ambulatory AF patients admitted to ICU for ECV with biphasic shocks. Up to a maximum of 3 shocks (150-200-200 J) are given in the electrode position determined by random numbers, and if sinus rhythm (SR) is not restored, electrode position is changed and 2 additional 200 J shocks are allowed. Both electrode positions are analyzed and compared to determine which one allows restoration of SR with the lowest number of shocks and least energy. RESULTS: Forty-six patients were included in the A-A group, and 45 in the A-P group. Sinus rhythm was restored in 92% of cases, although patients in the A-A group needed a lower number of shocks and less energy: 1 versus 2 shocks (p=0,003) and 150 versus 350 J (p=0.017). Only one out of 5 patients in whom the A-A position had failed was reverted to RS with the A-P position, whereas 10 out of 13 patients in which A-P position had failed were reverted in the A-A position (p=0.038). CONCLUSIONS: The A-A position is more effective in the elective electrical cardioversion of atrial fibrillation, so we recommend this position as the first choice.

[Limitation of therapeutic effort after ICU admission. Analysis of related factors]. / Limitación del esfuerzo terapéutico tras el ingreso en una Unidad de Medicina Intensiva. Análisis de factores asociados.

OBJECTIVE: To analyze the limitation of therapeutic effort (LTE) in our Intensive Care Unit (ICU) and the variables associated with that decision. DESIGN: Prospective cohort study with a follow up of one year after discharge. SETTING: ICU of a second level hospital. PATIENTS: Four hundred and nine patients admitted during a two-year period. MAIN VARIABLES: APACHE II, NEMS, SOFA, quality of life (PAEEC) and mortality. RESULTS: LTE was performed in 49 (12%) patients. This decision was made by general agreement among the care team in 88% of cases and with the family in 73.5%. It was made on day 8 (4-20) with a SOFA score of 9 (4-13). Mortality in the LTE group was 69.4% in ICU, 92% in hospital, and 96% at 6 and 12 months. A logistic regression model showed that the variables associated with LTE were the following: NEMS score >or=30.7 (OR 12; 95% CI 3.7-39, p < 0.001), NEMS 26.6-30.6 (OR 8; 95% CI 2.5-25.6, p = 0.001), APACHE II > 30 (OR 7.6; 95% CI 2-29, p = 0.003), quality of life >or= 7 (OR 4.2; 95% CI 1.1-15, p = 0.03), age >or= 80 (OR 3.7, 95% CI 1.4-9.5, p = 0.007) and medical patient condition (OR 3.5; 95% CI 1.5-8, p = 0.003). CONCLUSIONS: LTE is a common practice and is usually performed among the care team and the patient's surrogates. The main variables associated with LSC are those related to the severity of illness, previous quality of life, medical disease and patient's age.

Limitación del esfuerzo terapéutico tras el ingreso en una Unidad de Medicina Intensiva. Análisis de factores asociados / Limitation of therapeutic effort after ICU admission. Analysis of related factors

Objetivo. Analizar la limitación del esfuerzo terapéutico (LET) en una Unidad de Medicina Intensiva (UMI) y las variables consideradas en la toma de decisiones. Diseño. Estudio de cohortes prospectivo con seguimiento durante un año tras el alta. Ámbito. UMI de un Hospital de Nivel II. Pacientes. Cuatrocientos nueve pacientes ingresados durante un período de dos años. Variables de interés. APACHE II, Nine Equivalents of Nursing Manpower Use Score (NEMS), Sequential Organ Failure Assessment Score (SOFA), calidad de vida (PAEEC) y mortalidad. Resultados. Se realizó LET en 49 (12%) pacientes. Hubo consenso del equipo asistencial en el 88% de los casos y en el 73,5% con la familia. La decisión se tomó el día 8 (4-20) de estancia y con un SOFA de 9 (4-13) puntos. Entre los pacientes con LET la mortalidad en la UMI fue del 69,4%, la hospitalaria del 92% y a 6 y 12 meses del 96%. Un modelo de regresión logística mostró que las variables asociadas a la decisión de LET fueron las siguientes: NEMS ≥ 30,7 (odds ratio [OR] 12; intervalo de confianza [IC] 95% 3,7-39, p 30 (OR 7,6; IC 95% 2-29, p = 0,003), la calidad de vida previa ≥ 7 (OR 4,2; IC 95% 1,1-15, p = 0,03), edad ≥ 80 años (OR 3,7; IC 95% 1,4-9,5, p = 0,007), paciente médico (OR 3,5; IC 95% 1,5-8, p = 0,003). Conclusiones. La LET es una práctica frecuente y que se realiza generalmente con acuerdo del equipo asistencial y los representantes del paciente. Las variables asociadas a la decisión de LET son las relacionadas con la gravedad, la calidad de vida previa, la patología médica y la edad del paciente

Objective. To analyze the limitation of therapeutic effort (LTE) in our Intensive Care Unit (ICU) and the variables associated with that decision. Design. Prospective cohort study with a follow up of one year after discharge. Setting. ICU of a second level hospital. Patients. Four hundred and nine patients admitted during a two-year period. Main variables. APACHE II, NEMS, SOFA, quality of life (PAEEC) and mortality. Results. LTE was performed in 49 (12%) patients. This decision was made by general agreement among the care team in 88% of cases and with the family in 73.5%. It was made on day 8 (4-20) with a SOFA score of 9 (4-13). Mortality in the LTE group was 69.4% in ICU, 92% in hospital, and 96% at 6 and 12 months. A logistic regression model showed that the variables associated with LTE were the following: NEMS score ≥30.7 (OR 12; 95% CI 3.7-39, p 30 (OR 7.6; 95% CI 2-29, p = 0.003), quality of life ≥ 7 (OR 4.2; 95% CI 1.1-15, p = 0.03), age ≥ 80 (OR 3.7, 95% CI 1.4-9.5, p = 0.007) and medical patient condition (OR 3.5; 95% CI 1.5-8, p = 0.003). Conclusions. LTE is a common practice and is usually performed among the care team and the patient's surrogates. The main variables associated with LSC are those related to the severity of illness, previous quality of life, medical disease and patient's age