Volume 24, Issue 101, January - February, 2020

The value of left ventricular strain in predicting adverse outcomes after coronary artery bypass surgery

Iman Rashid Al-Obaidi¹, Walla Lauy Al Falluji¹, Hayder Adnan Fawzi^2♦, Wisam Salih Al-Obaidi¹, Ali Abdul-Amer Al-Moswee¹, Azhar Jihad Salman¹, Ahmed Sameer Alnuaimi³

¹Cardiac surgical department of Ibn Al Bittar cardiac surgical center, Baghdad, Iraq
²Department of Clinical Pharmacy, AL-Esraa College University, Ministry of Higher Education and Scientific Research, Baghdad Iraq
³Department of Clinical Research- Directorate of Clinical Affairs, Doha, Qatar

^♦Corresponding author
Hayder Adnan Fawzi Address: Baghdad, Iraq Phone number: +964 (0) 7722627943 Email: hayder.adnan2010@gmail.com

ABSTRACT

Objective: assess the validity of global LV strain and strain rate (SR) to conventional echo parameters and N-Terminal proBNP (Brain Natriuretic peptide) in patients with CAD (coronary artery disease). Methods: the study included patients with CAD and LVEF ≥ 45%, with or without mitral valve regurgitation. The study carried out during the period from December 2017 to March 2018. The patients were scheduled for CABG±MVR (mitral valve replacement). Longitudinal and circumferential LV strain and SR were measured in addition to conventional echo parameters. NT-ProBNP and LV End Diastolic Pressure (LVEDP) were additional parameters to evaluate cardiac function. All the measurements were performed within one week prior to surgery. Results: The incidence of early adverse outcome after surgery was 35.6%. The mean LV longitudinal strain was the single best parameter in predicting adverse outcome, while global LV circumferential strain and strain rate followed closely in validity. Conclusion: The mean LV longitudinal, circumferential strain & strain rate provides a valuable tool for selecting candidates for CABG±MVR assuring a plausible outcome after surgery.

Keywords: LV Strain, adverse surgical outcome, Coronary artery bypass graft, proBNP

Medical Science, 2020, 24(101), 282-289

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