Aortic Valve Replacement for Aortic Insufficiency: Valve Type as a Determinant of Systolic Strain Recovery

Abstract

These early results suggest that valve prosthetic type may be a factor in efforts to improve strain recovery after AVR for AI, although further investigation is warranted. MRI with tissue-tagging may be a useful tool for comparing the impact of prosthetic valve choice on incompletely recovered systolic strain following AVR for chronic AI.

Strain Echocardiographic Assessment of Ventricular Function after Percutaneous Pulmonary Valve Implantation

“…18 This decrease in echocardiographic values may also be due to a possible, although slight, increase in afterload due to the PPV in the RV outflow tract. 23 The following return to baseline values may represent remodeling and recovery after the interventional procedure. 24 In addition, these findings are uniform with echocardiographic findings in patients undergoing valve replacement for aortic regurgitation.…”

“…Strain and strain rate have been related to stroke volume; therefore with relief of regurgitation, this may explain some of the decrease in values because of the decreased RV stroke volume 18 . This decrease in echocardiographic values may also be due to a possible, although slight, increase in afterload due to the PPV in the RV outflow tract 23 . The following return to baseline values may represent remodeling and recovery after the interventional procedure 24 .…”

Heterogeneous Distribution of Left Ventricular Contractile Injury in Chronic Aortic Insufficiency

“…Regional strain patterns in patients with AI are significantly different than in controls, as detected using velocity vector imaging [17], tissue Doppler imaging [18,19], and tagged MRI [20–22]. These studies have characterized regional differences between patients with chronic AI and control individuals, and we conducted this study to explore regional differences within this population.…”