Variables influencing the prediction of fluid responsiveness: a systematic review and meta-analysis.

INTRODUCTION: Prediction of fluid responsiveness in acutely ill patients might be influenced by a number of clinical and technical factors. We aim to identify variables potentially modifying the operative performance of fluid responsiveness predictors commonly used in clinical practice. METHODS: A sensitive strategy was conducted in the Medline and Embase databases to search for prospective studies assessing the operative performance of pulse pressure variation, stroke volume variation, passive leg raising (PLR), end-expiratory occlusion test (EEOT), mini-fluid challenge, and tidal volume challenge to predict fluid responsiveness in critically ill and acutely ill surgical patients published between January 1999 and February 2023. Adjusted diagnostic odds ratios (DORs) were calculated by subgroup analyses (inverse variance method) and meta-regression (test of moderators). Variables potentially modifying the operative performance of such predictor tests were classified as technical and clinical. RESULTS: A total of 149 studies were included in the analysis. The volume used during fluid loading, the method used to assess variations in macrovascular flow (cardiac output, stroke volume, aortic blood flow, volume‒time integral, etc.) in response to PLR/EEOT, and the apneic time selected during the EEOT were identified as technical variables modifying the operative performance of such fluid responsiveness predictor tests (p < 0.05 for all adjusted vs. unadjusted DORs). In addition, the operative performance of fluid responsiveness predictors was also influenced by clinical variables such as the positive end-expiratory pressure (in the case of EEOT) and the dose of norepinephrine used during the fluid responsiveness assessment for PLR and EEOT (for all adjusted vs. unadjusted DORs). CONCLUSION: Prediction of fluid responsiveness in critically and acutely ill patients is strongly influenced by a number of technical and clinical aspects. Such factors should be considered for individual intervention decisions.

Divergence and Convergence of the Public Health Leadership Competency Framework Against Others in Undergraduate Medical Education: A Scoping Review.

Objective: The following scoping review is aimed at identifying leadership competency frameworks in Undergraduate Medical Education (UME) by analyzing the thematic scopes, target audiences, and methods involved. A further objective is to compare the frameworks against a standard framework. Methods: The authors extracted the thematic scope and methods of each framework based on the original author's formulations in each selected paper. The target audience was divided into three sections: UME, medical education, and beyond medical education. The frameworks were converged and diverged against the public health leadership competency framework. Results: Thirty-three frameworks covering thematic scopes such as refugees and migrants were identified. The most common methods to develop leadership frameworks were reviews and interviews. The courses targeted multiple disciplines including medicine and nurses. The identified competency frameworks have not converged among important domains of leadership such as systems thinking, political leadership, leading change, and emotional intelligence. Conclusion: There is a variety of frameworks that support leadership in UME. Nevertheless, they are not consistent in vital domains to face worldwide health challenges. Interdisciplinary and transdisciplinary leadership competency frameworks which address health challenges should be used in UME.