Caracterización epidemiológica: descripción de mortalidad para hemorragia subdural aguda no traumática en el período 2017-2021, en Chile / Epidemiological characterization: description of mortality for non-traumatic acute subdural hemorrhage in the 2017-2021 period, in Chile

Introducción: La hemorragia subdural aguda no traumática (HSDNT) es una patología relacionada a factores de riesgo cardiovascular (RCV). Por falta de estudios epidemiológicos nacionales, se plantea estudiar la tasa de mortalidad (TM) y defunciones por HSDNT entre los años 2017-2021 en Chile. Metodología: Estudio descriptivo, transversal, sobre defunciones por HSDNT entre los años 2017-2021 en Chile (N=878), según grupo etario, sexo y lugar de defunción, usando datos obtenidos del departamento de estadística e información en salud. Se utilizó estadística descriptiva y cálculo de TM. No requirió aprobación por comité de ética. Resultados: Se calculó una TM de 0,99/100.000 habitantes entre los años 2017-2021, siendo la mayor los años 2017-2019 y 2020 con TM de 1/100.000. El sexo masculino presentó TM de 1,27/100.000, el grupo etario mayor a 80 años presentó una TM de 19,28/100.000 habitantes. Según lugar de defunción, el año 2020 un 83% (148) de las defunciones fue en hospital o clínica. Discusión: La prevalencia del RCV hace relevante el estudio de mortalidad por HSDNT, donde la principal hipótesis de su mortalidad en Chile estaría basada en estos factores riesgo latentes. Según lugar de defunción, se podría suponer dadas mayores complicaciones en aquellos pacientes hospitalizados por HSDNT. Conclusión: Dada la nula existencia de datos sobre esta patología en Chile, se realizó una caracterización epidemiológica en conjunto a un análisis de defunciones según el lugar, aportando una perspectiva nacional de mortalidad sobre este cuadro en particular.

Introduction: Non-traumatic acute subdural hemorrhage (NTSDH) is related to cardiovascular risk factors (CVR). Due to lack of national epidemiological studies, it is proposed to study mortality rate (MR) and deaths from HSD between the years 2017-2021 in Chile. Methodology: Descriptive, observational, cross-sectional study on deaths due to SDH between the years 2017-2021 in Chile (N=878), in a population older than 15 years, according to age group, sex and place of death, using data obtained from Departamento de estadísticas e información en salud. Descriptive statistics and MR calculation were used. It did not require approval by an ethics committee. Results: A MR of 0.99/100,000 inhabitants was calculated between the years 2017-2021, the year being the highest in the years 2017-2019 and 2020 with MR of 1/100,000. Male sex presented a MR of 1.27/100,000, the age group over 80 years presented a MR of 19.28/100,000 inhabitants. By place of death, in 2020 there were 148 deaths in hospitals or clinics. Discussion: The prevalence of CVR makes the study of mortality from NTSDH relevant, where the hypothesis of its mortality in Chile would be based on these risk factors. Depending on the place of death, it could be assumed that there are greater complications in those patients hospitalized for NTSDH. Conclusion: Given the null existence of data on this pathology in Chile, an epidemiological characterization was carried out together with an analysis of deaths according to the place, providing a national perspective of mortality about this disease.

[Chronic and subacute subdural haematoma. An epidemiological study in a captive population]. / Hematoma subdural crónico y subagudo. Estudio epidemiológico en una población cautiva.

INTRODUCTION: Although chronic and subacute subdural haematomas (CSSH) are amongst the commonest neurosurgical conditions, there are few studies on their incidence in the general population. OBJECTIVES: To determine the overall annual rate, the specific rates according to age and sex based on the Official Argentinian National Census of 1991 (OANC 91) for CSSH. PATIENTS AND METHODS: The Hospital Privado de Comunidad de Mar del Plata attends a captive population of 89,500 persons from the Instituto Nacional de Servicios Sociales de Jubilados y Pensionados (INSSJP) and the Prepaid Medical Schemes (PMP) of our institution. We studied the patients of INSSJP and PMP who had CSSH between 1992 and 1996. We determined the annual overall rate and the specific rates according to age and sex, and fitted to the OANC 91. RESULTS: 1. Annual overall rate: 14.1 CSSH/100,000 persons/year. 2. Specific rate for women: 11.6 CSSH/100,000 persons/year. 3. Specific rate for men: 18.1 CSSH/100,000 persons/year. 4. Specific rate 71-80 years old: 18.8 CSSH/100,000 persons/year. 5. Rate fitted to OANC9: 3.1 CSSH/100,000 persons/year. CONCLUSIONS: Our overall rate is higher, and the specific rate for the age group 71-80 years is intermediate, with regard to the rates found in other studies. Neuroepidemiological investigation should be stimulated so that more clinical studies are made regarding the results and costs based on the population.