Perioperative tissue Doppler echocardiography and bypass graft flowmetry in patients undergoing coronary revascularization: predictive power for late recovery of regional myocardial function

Williams, Robert Ian, Haaverstad, Rune, Sianos, Georgios, Vourvouri, Eleni and Fraser, Alan Gordon 2002. Perioperative tissue Doppler echocardiography and bypass graft flowmetry in patients undergoing coronary revascularization: predictive power for late recovery of regional myocardial function. Journal of the American Society of Echocardiography 15 (10 pt2) , pp. 1202-1210. 10.1067/mje.2002.122965

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Abstract

To assess if recovery of regional myocardial function can be predicted by perioperative Doppler tissue echocariography, 20 patients undergoing coronary artery bypass graft surgery (mean 4.1 grafts) had serial transthoracic and transesophageal echocardiography. Systolic velocities were lower in basal posterior and anterior segments, and higher in the midanterior septum, at intraoperative transesophageal echocardiography compared with preoperative transthoracic echocardiography (-45%, -30%, +18%, respectively), but comparable elsewhere. After bypass, velocities were increased in midposterior, basal lateral, basal anterior, and midanterior septal segments (+41%, 25%, 27%, 44%, respectively, P <.05). Increased velocities in circumflex segments at 6 weeks (midposterior, basal lateral, and midlateral +54%, 45%, 39%, respectively, P <.05) were not predicted by perioperative changes or related to graft flow (transit-time flowmetry; R -0.09, -0.14, and -0.32, respectively, not significant). Myocardial velocities measured by transthoracic and transesophageal echocardiography are not comparable in segments with different angles of insonation. Perioperative changes in resting myocardial systolic velocity are highly variable and do not predict late recovery.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Medicine
Subjects:	R Medicine > R Medicine (General) R Medicine > RZ Other systems of medicine
Publisher:	Elsevier
ISSN:	0894-7317
Last Modified:	04 Jun 2017 07:50
URI:	https://orca.cardiff.ac.uk/id/eprint/68706

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