Oxygen saturation as a predictor of mortality in hospitalized adult patients with COVID-19 in a public hospital in Lima, Peru.

INTRODUCTION: Peru is among the top ten countries with the highest number of coronavirus disease 2019 (COVID-19) cases worldwide. The aim of the study was to describe the clinical features of hospitalized adult patients with COVID-19 and to determine the prognostic factors associated with in-hospital mortality. METHODS: We conducted a retrospective cohort study among adult patients with COVID-19 admitted to Hospital Cayetano Heredia; a tertiary care hospital in Lima, Peru. The primary outcome was in-hospital mortality. Multivariate Cox proportional hazards regression was used to identify factors independently associated with in-hospital mortality. RESULTS: A total of 369 patients (median age 59 years [IQR:49-68]; 241 (65.31%) male) were included. Most patients (68.56%) reported at least one comorbidity; more frequently: obesity (42.55%), diabetes mellitus (21.95%), and hypertension (21.68%). The median duration of symptoms prior to hospital admission was 7 days (IQR: 5-10). Reported in-hospital mortality was 49.59%. By multiple Cox regression, oxygen saturation (SaO2) values of less than 90% on admission correlated with mortality, presenting 1.86 (95%CI: 1.02-3.39), 4.44 (95%CI: 2.46-8.02) and 7.74 (95%CI: 4.54-13.19) times greater risk of death for SaO2 of 89-85%, 84-80% and <80%, respectively, when compared to patients with SaO2 >90%. Additionally, age >60 years was associated with 1.88 times greater mortality. CONCLUSIONS: Oxygen saturation below 90% on admission is a strong predictor of in-hospital mortality in patients with COVID-19. In settings with limited resources, efforts to reduce mortality in COVID-19 should focus on early identification of hypoxemia and timely access to hospital care.

Clinical features and prognostic factors related to mortality in hospitalized adult patients with COVID-19 in a public hospital in Lima, Peru / Características clínicas y factores asociados a mortalidad en pacientes adultos hospitalizados por COVID-19 en un hospital público de Lima, Perú. / Características clínicas e fatores associados à mortalidade em pacientes adultos internados pelo COVID-19 em um hospital público de Lima, Peru.

The COVID-19 pandemic has deeply affected the national health system in Peru, and despite the many strategies implemented to control the epidemic, the collapse of the sanitary system was imminent. We performed a retrospective cohort from the clinical records of adult patients with COVID-19 admitted in Hospital Cayetano Heredia (Lima, Peru), between March and June 2020. A total of 369 patient charts were included for analysis; 241 (65.31%) were male and the median age was 59 years (IQR: 49-68). Most patients (68.56%) reported at least one comorbidity; more frequently: obesity (42.55%), diabetes mellitus (21.95%), and hypertension (21.68%). The median duration of symptoms prior to hospital admission was 7 days (IQR: 5-10). Reported in-hospital mortality was 49.59%. By multiple Cox regression, oxygen saturation (SaO2) level at admission was the main predictor of patient mortality, with SaO2 levels of 84-80% and <80% had 4.44 (95%CI 2.46-8.02) and 7.74 (95%CI 4.54-13.19) times greater risk of death, respectively, when compared to patients with SaO2 >90%. Additionally, older age (>60 years old) was associated with 1.9 times greater mortality. Our study finds SaO2 at admission and older age to be independent predictors of in-hospital mortality. These findings suggest a delay in early detection of hypoxemia in the community, therefore, we propose the implementation of monitoring for hypoxemia among outpatients with COVID-19 as well as appropriate and timely oxygen therapy in admission.  

La pandemia por COVID-19 ha representado un duro golpe al sistema sanitario peruano, y las estrategias implementadas para el control de la epidemia han sido insuficientes en el contexto de colapso del sistema de salud. Se realizó una cohorte retrospectiva a partir de la revisión de las historias clínicas de pacientes adultos hospitalizados por COVID-19, entre marzo y junio de 2020, en el Hospital Cayetano Heredia, Lima- Perú. Se analizó 369 historias clínicas, 241 (65.31%) pacientes eran del sexo masculino y la mediana de edad era de 59 años (RIC: 49-68). El 68.56% presentaba al menos una comorbilidad, siendo las más frecuentes obesidad (42.55%), diabetes mellitus (21.95%) e hipertensión arterial (21.68%). La mediana de duración de síntomas previo al ingreso hospitalario fue de 7 días (RIC: 5-10). La mortalidad intrahospitalaria encontrada fue del 49.59%. En el análisis multivariado, la saturación de oxígeno al ingreso al hospital fue el principal factor predictor de mortalidad. Se observó un marcado incremento de mortalidad; encontrándose que la SatO2 de 84-80% y <80% tuvieron 4.44 (IC95% 2.46-8.02) y 7.74 (IC95% 4.54- 13.19) veces mayor riesgo de muerte, respectivamente, en comparación con pacientes con SatO2 basal >90%. Adicionalmente, la edad mayor a 60 años se asocia a 1.90 veces mayor mortalidad. Nuestro estudio muestra que la edad mayor a 60 años y el nivel de hipoxemia presente al momento de la admisión al hospital son factores asociados de forma independiente a la mortalidad intrahospitalaria. Los hallazgos sugieren una demora en detección de hipoxemia en la comunidad, por lo que se propone reforzar el sistema de monitoreo e identificación temprana de hipoxemia en pacientes con COVID-19, asociada a un soporte oxigenatorio en el momento oportuno.

A pandemia do COVID-19 representou um duro golpe no sistema de saúde peruano, e as estratégias implementadas para controlar a epidemia foram insuficientes no contexto do colapso do sistema de saúde. Foi realizada uma coorte retrospectiva com base na revisão dos prontuários de pacientes adultos internados pelo COVID-19, entre março e junho de 2020, no Hospital Cayetano Heredia, Lima-Peru. Foram analisados ​​369 prontuários, 241 (65,31%) pacientes eram do sexo masculino e a idade média foi de 59 anos (RIC: 49-68). 68,56% apresentavam pelo menos uma comorbidade, sendo as mais frequentes obesidade (42,55%), diabetes mellitus (21,95%) e hipertensão (21,68%). A duração mediana dos sintomas antes da internação foi de 7 dias (RIC: 5-10). A mortalidade hospitalar encontrada foi de 49,59%. Na análise multivariada, a saturação de oxigênio na admissão hospitalar foi o principal preditor de mortalidade. Um aumento acentuado na mortalidade foi observado; constatando que SatO2 de 84-80% e <80% tinha 4,44 (IC95% 2,46-8,02) e 7,74 (IC95% 4,54-13,19) vezes maior risco de morte, respectivamente, em comparação com pacientes com SatO2 basal> 90%. Além disso, a idade acima de 60 anos está associada a uma mortalidade 1,90 vezes maior. Nosso estudo mostra que a idade superior a 60 anos e o nível de hipoxemia presente no momento da admissão no hospital são fatores independentemente associados à mortalidade hospitalar. Os resultados sugerem um atraso na detecção de hipoxemia na comunidade, motivo pelo qual se propõe fortalecer o sistema de monitoramento e identificação precoce de hipoxemia em pacientes com COVID-19, associados ao suporte à oxigenação no momento apropriado.

[Ectopic thoracic pancreas]. / Pá ncreas ectópico torá cico.

We present the case of a 38-year-old man who eighteen years before for having chest pain went diagnosed as hydatid cyst. It was confirmed in multislice spiral tomography (TEM) that it had a heterogeneous mass of liquid content, with partially calcified walls located in the anterior mediastinum. It was removed, being the diagnosis, by the presence of groups of acinar cells and ducts with pancreatic appearance, panqueratin and CD68 positive, of a mediastinal ectopic pancreas. A case has never been reported in Peru and in medical literature it would be the thirty-first reported case of intrathoracic ectopic pancreas.

Páncreas ectópico torácico / Ectopic thoracic páncreas

RESUMEN Presentamos el caso de un varón de 38 años a quien por presentar dolor torácico se le hizo dieciocho años antes el diagnóstico de quiste hidatídico. Se confirmó en la tomografía espiral multicorte (TEM) que tenía una masa heterogénea de contenido líquido, con paredes parcialmente calcificadas localizada en el mediastino anterior. Se la extirpó, siendo el diagnóstico, por la presencia de grupos de células acinares y de conductos con apariencia pancreática, panqueratina y CD68 positivos, de un páncreas ectópico mediastinal. Nunca se ha reportado un caso en el Perú y en la literatura médica éste sería el trigésimo primer caso reportado de páncreas ectópico intratorácico.

ABSTRACT We present the case of a 38-year-old man who eighteen years before for having chest pain went diagnosed as hydatid cyst. It was confirmed in multislice spiral tomography (TEM) that it had a heterogeneous mass of liquid content, with partially calcified walls located in the anterior mediastinum. It was removed, being the diagnosis, by the presence of groups of acinar cells and ducts with pancreatic appearance, panqueratin and CD68 positive, of a mediastinal ectopic pancreas. A case has never been reported in Peru and in medical literature it would be the thirty-first reported case of intrathoracic ectopic pancreas.

Síndrome Doege-Potter: reporte de caso / Doege-Potter Syndrome: a case report

El tumor fibroso solitario de pleura es una neoplasia poco frecuente. La asociación de hipoglicemia como manifestación paraneoplásica con este tipo de tumor, se conoce como Síndrome de Doege-Potter. La hipoglicemia es secundaria a la secreción tumoral de una forma aberrante de IGF-II, que estimula de manera permanente al receptor de insulina. La resección quirúrgica completa es el tratamiento de elección, que se asocia con la curación instantánea de la hipoglicemia y bajo riesgo de recurrencia. Se presenta el caso de una mujer de 55 años de edad, que acudió al servicio de emergencia por presentar episodios recurrentes de hipoglicemia. A su ingreso, los análisis mostraron hipoglicemia severa y niveles bajos de insulina y péptido C. La radiografía de tórax mostró una opacidad homogénea que ocupaba casi todo el hemitórax derecho, y la tomografía computada, una tumoración heterogénea con bordes bien definidos en el mismo hemitórax. La paciente fue sometida a una toracotomía abierta con resección completa del tumor. El estudio histológico fue compatible con tumor fibroso solitario pleural. La paciente no volvió a presentar otro episodio de hipoglicemia, siendo dada de alta.

The solitary fibrous tumor of the pleura is an infrequent neoplasm. Hypoglycemia is a paraneoplastic manifestation of this tumor and it is named the Doege-Potter Syndrome. Hypoglycemia results from the aberrant tumoral secretion of IGF-II that permanently stimulates the insulin receptor. Surgical removal of the tumor is the treatment of choice and results in immediate resolution of hypoglycemia with low risk of recurrence. We present the case of a 55-yearold female patient who attended the emergency room with recurrent episodes of hypoglycemia. On admission, the laboratory results revealed severe hypoglycemia and low levels of insulin and C-peptide. Chest x-ray showed a homogenous opacity that affected almost the entire right hemithorax. The CT-scan showed a heterogeneous tumor with no well-defined borders. An open thoracotomy with complete resection of the tumor was performed. Histopathological findings were compatible with solitary fibrous tumor of the pleura. Hypoglycemic episodes resolved and the patient was discharged.