Iatrogenic left main coronary artery stenosis following aortic and mitral valve replacement.

Iatrogenic coronary artery disease following prosthetic valve implantation is a rare complication. This may result from mechanical injury in the intraoperative period. The use of balloon tip perfusion catheter presumably provides the initial insult with local vessel wall hypoxia.

Two dimensional speckle tracking echocardiography in detection of subclinical left ventricular systolic dysfunction in patients with severe aortic stenosis.

Introduction: Subclinical left ventricular (LV) systolic dysfunction may develop in patients with severe aortic stenosis (AS) despite normal LV ejection fraction (EF%).

The Aim Of The Study: To evaluate the role of two dimensional (2D) speckle tracking echocardiography (STE) in detection of subclinical LV systolic dysfunction in patients with severe AS.

Patients And Method: The study included 50 patients with severe AS (mean age: 45 ± 9 years) and 30 age-matched healthy individuals (mean age 43 ± 7 years.