Related Experiment Video
Updated: Aug 8, 2026
Noninvasive Determination of Vortex Formation Time Using Transesophageal Echocardiography During Cardiac Surgery
Published on: November 28, 2018
Comparison of risk factor and left ventricular stroke work index as predictors of cardiac complications in vascular
V Loughlin1, J S Beniwal, K Cassidy
1Lagan Valley Hospital, Lisburn, Northern Ireland.
Abstract:
The peak left ventricular stroke work index developed in response to rapid volume infusion was calculated in 34 patients undergoing either aorto-iliac or peripheral vascular surgery. The average preoperative maximum stroke work index in patients recovering without cardiac complication was 0.47 (+/- 0.2) J/m2 compared with a mean value of 0.28 (+/- 0.14) J/m2 in patients with perioperative cardiac complications. This difference was significant (P less than 0.01). Clinical cardiac risk analysis identified a group of high risk patients in which more than half developed cardiac complications and a low risk group in which no cardiac complications were observed. There was a significant difference in maximum stroke work indices in these two groups.
More Related Videos
07:25Predicting Amputation using Local Circulating Mononuclear Progenitor Cells in Angioplasty-treated Patients with Critical Limb Ischemia
Published on: September 22, 2020
09:36A Magnetic Resonance Imaging-based Computational Protocol for Analysis of Plaque Morphology and Hemodynamics in Patients with Carotid Artery Stenosis
Published on: August 12, 2025
Related Concept Videos
01:27Regulation of Stroke Volume
Preload refers to the degree of stretch on the heart before it contracts. It's analogous to the stretching of a rubber band; the more it's stretched, the more forcefully it snaps back. This concept is encapsulated in the Frank-Starling law of the...
01:22Cardiac Output II: Effect of Stroke Volume on Cardiac Output
Preload
Preload refers to the initial elongation of the cardiac myocytes before contraction and is related to the volume of blood filling the heart at the end of diastole, or end-diastolic volume. The...