Lactate outperforms shock index in early mortality prediction across intermediate and high-risk pulmonary embolism: results from a multicentre registry
Risk stratification in acute pulmonary embolism (PE) is crucial to guide therapeutic decisions. The shock index (SI), calculated as heart rate divided by systolic blood pressure, is a readily available haemodynamic marker, but its discriminatory ability as an isolated predictor is limited. Lactate, a marker of ti...