mMRC dyspnea scale correlates with risk stratification and 1-year outcomes in acute pulmonary embolism patients.

BackgroundThis study aimed to investigate the value of the modified Medical Research Council (mMRC) dyspnea scale in risk stratification and outcome assessment for patients with acute pulmonary embolism (APE).MethodsA retrospective analysis was performed using medical records from a tertiary care center between 2011 and 2023. The study included patients aged 18–80 years who were diagnosed with APE. Participants were categorized into groups based on pulmonary embolism risk stratification, mMRC dyspnea scale, and the presence or absence of adverse outcomes within 1 year, which included in-hospital mortality, all-cause mortality after discharge, and hospital readmission. The associations between the mMRC dyspnea scale and both APE risk stratification and 1-year adverse outcomes were evaluated. The predictive performance of the mMRC dyspnea scale for 1-year adverse prognosis was assessed using receiver operating characteristic (ROC) curve analysis to determine the optimal cut-off threshold.ResultsThe study demonstrated that the mMRC dyspnea scale was significantly positively correlated with risk stratification of APE (P