ArticleCureus2024
The Urine Output Response to Low-Dose Diuretic Challenge Predicts Tolerance to Negative Fluid Balance in Mechanically Ventilated, Critically Ill Patients.
Article in Cureus, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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7 authors.
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Abstract
Background and objective Although early diuretic use and negative fluid balance (NFB) have been associated with lower mortality in mechanically ventilated patients, some patients are not tolerant to NFB. Little is known about whether urine output response after the diuretic administration predicts NFB tolerance in mechanically ventilated patients. Hence, we conducted this study to look into this. Methods This was a single-center, prospective, observational study. We included mechanically ventilated patients who were hemodynamically stable with bilateral pulmonary opacities on chest radiography and planned to be diuresed per our fluid removal protocol. In the protocol, a low dose of furosemide adjusted to each patient's estimated glomerular filtration rate (eGFR) was administered, and then we started to measure urine outputs hourly for four hours. Tolerance to NFB was defined as "absence of hypotension, fluid resuscitation and vasopressors use, and acute kidney injury during fluid removal". We investigated whether the urine output predicts the tolerance to NFB during fluid removal treatment. Results A total of 60 mechanically ventilated patients were included. Notably, 80% (48/60) of the patients were tolerant to NFB. All hourly and cumulative urine output measurements during the first four hours after the first diuretic administration were significantly higher in the NFB-tolerant group than in the non-tolerant group. Among all hourly and cumulative urine output measurements, the first four-hour cumulative urine output showed the highest area under the receiver operating characteristic curve (AUC) of 0.83 for predicting the tolerance to NFB. Multivariate logistic regression analysis adjusted for the urine output two hours before the diuretic use showed that each 100-mL increase in the first four-hour cumulative urine output was significantly associated with an increased odds ratio (OR) of the tolerance to NFB [adjusted odds ratio (aOR): 1.53; 95% CI: 1.11-2.15]. Conclusions Based on our findings, the first four-hour cumulative urine output after the first low dose of diuretic administration might help predict tolerance to NFB during fluid removal treatment in mechanically ventilated, critically ill patients.
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