Ratio of systolic blood pressure to left ventricular end-diastolic pressure at the time of primary percutaneous coronary intervention predicts in-hospital mortality in patients with ST-elevation myocardial infarction

Objective To determine the ability of simple hemodynamic parameters obtained at the time of cardiac catheterization to predict in-hospital mortality following ST-elevation myocardial infarction (STEMI). Background Hemodynamic parameters measured at the time of primary percutaneous coronary intervention (PPCI) could potentially identify high-risk patients who would benefit from aggressive hemodynamic support in the Cardiac Catheterization laboratory. Methods This is a retrospective single-center study of 219 consecutive patients with STEMI. Left ventricular end-diastolic pressure (LVEDP), systolic blood pressure (SBP), and aortic diastolic blood pressure were obtained after successful revascularization. The prognostic ability of LVEDP, pulse pressure, and SBP/LVEDP ratio were compared to major mortality risk scores. Results Patients had a mean age of 60 ±14 years, were predominantly white (73%), male (64%), with anterior wall infarcts in 39%. Comorbidities included diabetes mellitus (27%), heart failure (9%), and chronic kidney disease (7%). In-hospital mortality was 9%. Patients with SBP/LVEDP ≤ 4 had increased risk of in-hospital death (32% vs. 5.3%, P   4. The area under curve (AUC) for SBP/LVEDP ratio for in-hospital mortality (0.69) was more predictive than LVEDP (0.61, P = 0.04) or pulse pressure (0.55, P = 0.02) but similar to Shock Index (ratio of heart rate to SBP) and Modified Shock Index (ratio of HR to mean arterial pressure). Conclusion An SBP/LVEDP ratio ≤ 4 identified a group of STEMI patients at high risk of in-hospital death. © 2017 Wiley Periodicals, Inc.