Overhydration in acute kidney injury: Is it always a menace to critically ill patients? A survival study using bioimpedance spectroscopy.

INTRODUCTION: The hydration status is a predictor of survival in critically ill patients. However, it is unclear whether this association depends on the patient clinical condition. This study was designed to analyze the impact of hydration status on survival of critically ill patients with acute kidney injury (AKI) with or without sepsis. METHODS: A prospective cohort study following critically ill patients with AKI consecutively admitted over a one-year period to a teaching hospital intensive care unit (ICU). All patients with AKI stage three or higher of the KDIGO score were included. The hydration status was evaluated through the overhydration (OH) parameter of spectroscopy bioimpedance and sepsis was defined according Sepse-3 criteria. The survival analysis used adjusted competing-risks regression. RESULTS: Forty-eight patients were included, 27 (56%) with a sepsis diagnosis. The main negative predictors of survival among sepsis patients, adjusted by SAPS3 score, were higher OH (SHR 1.1, 95% CI 1.0-1.2, p = 0.02), mechanical ventilation (SHR 6.9, 95% CI 1.0-47.8, p = 0.04) and older age (SHR 1.1, 95% CI 1.0-1.1, p = 0.005). The predictors in non-sepsis patients were lower OH (SHR 0.82, 95% CI 0.71-0.95, p = 0.008) and mechanical ventilation (SHR 12, 95% CI 2.4-6.6, p < 0.001). CONCLUSIONS: This finding suggests that extracellular overhydration is an independent predictor of survival in critically ill patients with sepsis, but it seems to have opposite effect in non-sepsis patients.

Apresentação de forma rara de coledocolitíase e análise de conflitos gerados pela solicitação de exames complementares / A rare form of choledocholithiasis and an analysis of conflicts generated by request of complementary tests

Coledocolitíase refere-se à presença de cálculos no ducto biliar comum e é secundário à passagem de cálculos da vesícula biliar para o ducto colédoco. A associação dos critérios clínicos, laboratoriais e ultrassonográficos determina sensibilidade de 98% para o diagnóstico de coledocolitíase. A sensibilidade para detectar cálculos segundo os exames de imagens pouco varia entre as técnicas disponíveis, representando acurácia de 90% para ultrassonografia abdominal. A medicina avança continuamente através de novos meios de diagnóstico. À medida que novas tecnologias surgem, anamnese e exame físico aprofundado são desvalorizados. Quanto mais exames forem solicitados, maior a chance de resultados falso-positivos, e resultados mal interpretados podem ocasionar adiamentos e cancelamentos de procedimentos essenciais. O relato refere-se a uma paciente do sexo feminino apresentando icterícia, febre, dor em hipocôndrio direito, transaminases excessivamente elevadas e ultrassom abdominal compatível com cálculo na vesícula biliar e material no colédoco terminal. O relato objetiva evidenciar que a integração entre história, exames físicos e laboratoriais é fundamental para se determinar quais exames adicionais solicitar. A paciente apresentava quadro de coledocolitíase e colangite evidenciados ao exame físico e testes complementares. Entretanto, solicitou-se colangiorressonância ­ desnecessariamente ­ para confirmação diagnóstica a uma paciente sem condições financeiras para investigação adicional. É indiscutível que os modernos recursos tecnológicos proporcionam meios necessários para diagnóstico mais preciso. Deve-se basear em critérios clínicos, laboratoriais e ultrassonográficos na investigação de coledocolitíase. Os exames são como a própria denominação se dá (complementares), e eles servem para auxiliar, complementar o raciocínio médico, e não para, sozinhos, realizar o diagnóstico (AU)

Choledocholithiasis refers to the presence of stones in the common bile duct and is secondary to the passage of calculi from the gallbladder to the common bile duct. The association of clinical, laboratory and ultrasonographic criteria determines a 98% sensitivity for the diagnosis of choledocholithiasis. The sensitivity to detect stones according to imaging varies little across the available techniques, representing an accuracy of 90% for abdominal ultrasonography. Medicine advances continuously through new diagnostic means. As new technologies emerge, anamnesis and in-depth physical examination are devalued. The more tests are requested, the greater the chance of false-positive results, and misinterpreted results may lead to delays and cancellations of essential procedures. The report refers to a female patient with jaundice, fever, right hypochondrium pain, excessively elevated transaminases, and abdominal ultrasound consistent with stone in the gallbladder and material in the terminal bile duct. The aim of the report is to show that the integration between history, physical and laboratory tests are fundamental to determine which additional tests to request. The patient had a picture of choledocholithiasis and cholangitis evidenced on physical examination and complementary tests. However, cholangio resonance was requested ­ unnecessarily ­ for diagnostic confirmation to a patient who could not afford further investigation. It is indisputable that modern technological resources provide the means needed for more accurate diagnosis. The investigation of choledocholithiasis should be based on clinical, laboratory and ultrasonographic criteria. The tests are like the denomination itself (complementary), and they serve to aid, complement the medical reasoning, and not to make the diagnosis alone (AU)