[Registry of perioperative cardiac arrests in a clinical hospital in the period 2006-2017]. / Registro de paro cardiorrespiratorio perioperatorio en un hospital universitario en el período 2006-2017.

BACKGROUND: Perioperative cardiac arrest (PCA) is a rare but important event in the operating room. AIM: To describe PCA events at a Clinical Hospital in Santiago, Chile. MATERIAL AND METHODS: Registry of PCA that occurred in the operating room (OR) and during procedures not carried out in the OR between September 2006 and November 2017. Precipitating events, type of anesthesia and results of resuscitation maneuvers were described. RESULTS: Eighty events (five outside of the OR) during 170,431 surgical procedures were recorded, resulting in an incidence of 4.4 events per 10,000 interventions. Hypotension/hypoperfusion was the most frequently found preexisting condition (42.5%). The main cause was the presence of preoperative complications (57.5%). Nineteen cases (23.8%) were attributable to anesthesia, with an incidence of 1.11 per 10,000 anesthetic procedures. Survival rate at hospital discharge was 52.5%. The figure for PCA caused by anesthesia was 84.2%. CONCLUSIONS: The incidence of PCA and its survival is similar to that reported abroad. In general, PCA has a better prognosis than other types of cardiac arrest, especially if it has an anesthetic cause.

Registro de paro cardiorrespiratorio perioperatorio en un hospital universitario en el período 2006-2017 / Registry of perioperative cardiac arrests in a clinical hospital in the period 2006-2017

Background: Perioperative cardiac arrest (PCA) is a rare but important event in the operating room. Aim: To describe PCA events at a Clinical Hospital in Santiago, Chile. Material and Methods: Registry of PCA that occurred in the operating room (OR) and during procedures not carried out in the OR between September 2006 and November 2017. Precipitating events, type of anesthesia and results of resuscitation maneuvers were described. Results: Eighty events (five outside of the OR) during 170,431 surgical procedures were recorded, resulting in an incidence of 4.4 events per 10,000 interventions. Hypotension/hypoperfusion was the most frequently found preexisting condition (42.5%). The main cause was the presence of preoperative complications (57.5%). Nineteen cases (23.8%) were attributable to anesthesia, with an incidence of 1.11 per 10,000 anesthetic procedures. Survival rate at hospital discharge was 52.5%. The figure for PCA caused by anesthesia was 84.2%. Conclusions: The incidence of PCA and its survival is similar to that reported abroad. In general, PCA has a better prognosis than other types of cardiac arrest, especially if it has an anesthetic cause.

Sepsis severa cirugía / Severe sepsis and surgery

Severe sepsis is a common condition, increasing in incidence and mortality. Despite it has always been part of the surgeon's clinical practice, severe sepsis of surgical origin remains difficult to manage. Decisions about initial resuscitation, timing of source control, surgical technique and antimicrobial therapy are challenging. The goal of this review is to ensure surgeons and other health professionals are aware of diagnostic and treatment choices actually recommended in order to reduce the high mortality of surgical severe sepsis.

La sepsis severa es una condición clínica frecuente, cuya incidencia y mortalidad van en aumento. Aunque siempre ha sido parte de la práctica clínica del cirujano, la sepsis severa de causa quirúrgica sigue siendo un cuadro clínico difícil de manejar. Las decisiones sobre reanimación del paciente, momento de la cirugía, técnica quirúrgica a utilizar y uso de antibióticos son un desafío. El objetivo de esta revisión es que el cirujano y el equipo médico conozcan las alternativas diagnósticas y terapéuticas actualmente recomendadas para reducir la alta mortalidad de la sepsis severa de causa quirúrgica.

[Original and abbreviated Zarit caregiver burden scales. Validation in Chile]. / Validación en Chile de la Escala de Sobrecarga del Cuidador de Zarit en sus versiones original y abreviada.

BACKGROUND: Six percent of the Chilean population has a disability requiring assistance with daily-living-activities and 69% of these individuals are cared by direct family members. The latter are at risk of developing caregiver burden. Zarit scales are used to assess the severity of caregiver burden. AIM: To validate the original and abbreviated Zarit scales for caregiver burden. MATERIAL AND METHODS: Two groups of interviewers applied the original and abbreviated Zarit scales, along with a single subjective indicator for burden and surveys for depression, to 32 caregivers from an outpatient clinic in Melipilla, Chile. In 22 subjects, the instruments were applied again, four months later RESULTS: Both Zarit scales showed high correlation with the subjective indicator for burden and with depression (r =0.51 and 0.67, respectively), supporting its construct validity. The abbreviated scale had a high correlation with the original scale (r =0.92), supporting its criterion validity. It had a 100 % sensitivity 77.7%, specificity 86.6% positive predictive value and 100% negative predictive value to discriminate severe caregiver burden, using the original scale as standard. Both instruments showed high internal consistency (Cronbach alpha =0.84 and 0.87, respectively), inter-observer reliability (intraclass correlation coefficient =0.81 and 0.86, respectively) and stability reliability (Kappa test-retest =0.91 and 0.93, respectively). CONCLUSIONS: Both original and abbreviated Zarit burden scales are valid to assess caregiver's burden in a Chilean context. The abbreviate scale Szeged particularly useful for primary care.

Validación en Chile de la Escala de Sobrecarga del Cuidador de Zarit en sus versiones original y abreviada / Original and abbreviated Zarit caregiver burden scales: validation in Chile

Background: Six percent of the Chilean population has a disability requiring assistance with daily-living-activities and 69 percent of these individuals are cared by direct family members. The latter are at risk of developing caregiver burden. Zarit scales are used to assess the severity of caregiver burden. Aim: To validate the original and abbreviated Zarit scales for caregiver burden. Material and methods: Two groups of interviewers applied the original and abbreviated Zarit scales, along with a single subjective indicator for burden and surveys for depression, to 32 caregivers from an outpatient clinic in Melipilla, Chile. In 22 subjects, the instruments were applied again, four months later Results: Both Zarit scales showed high correlation with the subjective indicator for burden and with depression (r =0.51 and 0.67, respectively), supporting its construct validity. The abbreviated scale had a high correlation with the original scale (r =0.92), supporting its criterion validity. It had a 100 percent sensitivity 77.7 percent, specificity 86.6 percent positive predictive value and 100 percent negative predictive value to discriminate severe caregiver burden, using the original scale as standard. Both instruments showed high internal consistency (Cronbach alpha =0.84 and 0.87, respectively), inter-observer reliability (intraclass correlation coefficient =0.81 and 0.86, respectively) and stability reliability (Kappa test-retest =0.91 and 0.93, respectively). Conclusions: Both original and abbreviated Zarit burden scales are valid to assess caregiver's burden in a Chilean context. The abreviate scale Szeged particularly useful for primary care.