Echocardiography for Estimating Filling Pressures in Ischemic Cardiogenic Shock: A Real-World Comparison of New...

Area of Science:

• Cardiology
• Echocardiography
• Critical Care Medicine

Background:

• Elevated left ventricular filling pressures are critical in acute myocardial infarction-related cardiogenic shock (AMI-CS).
• Accurate assessment of filling pressures guides management in critically ill cardiac patients.

Purpose of the Study:

• To compare the diagnostic performance of the American Society of Echocardiography (ASE) 2016 and 2025, and British Society of Echocardiography (BSE) 2024 guidelines for elevated filling pressures.
• To evaluate these algorithms against pulmonary artery catheter (PAC)-measured pulmonary capillary wedge pressure (PCWP) in patients with AMI-CS.

Main Methods:

• Post hoc analysis of a prospective observational study in a tertiary cardiac intensive care unit.
• Included 40 patients with AMI-CS undergoing simultaneous transthoracic echocardiography and PAC monitoring.
• Echocardiographic filling pressure classification used ASE 2016, ASE 2025, and BSE 2024 algorithms, compared to PAC data.

Main Results:

• Elevated PCWP was defined as >15 mmHg.
• Diagnostic accuracy for elevated PCWP was 63% for ASE 2016, 64% for BSE 2024, and 73% for ASE 2025.
• Echocardiographic algorithms showed modest diagnostic performance.

Conclusions:

• Echocardiographic algorithms have limited accuracy in detecting elevated PCWP in AMI-CS.
• Pulmonary artery catheter monitoring is necessary for precise measurement of filling pressures when clinically indicated.