Left atrial strain predicts hemodynamic parameters in cardiovascular patients

Area of Science:

• Cardiology
• Echocardiography
• Hemodynamics

Background:

• Left atrial (LA) function parameters, including reservoir, conduit, and contractile function, are crucial in cardiovascular health.
• Assessing these functions non-invasively can aid in predicting hemodynamic status.

Purpose of the Study:

• To evaluate the predictive value of LA reservoir, conduit, and contractile function using speckle tracking echocardiography (STE).
• To correlate these STE-derived parameters with invasively measured hemodynamic parameters in patients with myocardial and valvular diseases.

Main Methods:

• Sixty-nine patients undergoing invasive hemodynamic assessment via left and right heart catheterization were studied.
• Transthoracic echocardiography with STE was used to assess LA reservoir, conduit, and contractile function.

Main Results:

• In patients with sinus rhythm (SR), LA reservoir, conduit, and contractile function correlated inversely with pulmonary capillary wedge pressure (PCWP), left ventricular end-diastolic pressure, and mean pulmonary artery pressure (PAP).
• LA contractile function (cutoff 16.0%) demonstrated high diagnostic accuracy (AUC: 0.895) for predicting PCWP ≥18 mm Hg in SR patients.
• Atrial fibrillation (AF) patients showed significantly reduced LA reservoir function and no significant correlations with hemodynamic parameters.

Conclusions:

• LA strain parameters, particularly in SR, offer valuable prediction of hemodynamic parameters, especially left ventricular filling pressures.
• STE-derived LA strain is a promising non-invasive tool for assessing hemodynamic status in cardiovascular disease.