PREOPERATIVE AND EARLY POSTOPERATIVE ASSESSMENT OF THE INTERNAL THORACIC ARTERY BY TRANSCUTANEOUS DUPLEX ULTRASOUND IN CORONARY-ARTERY BYPASS-GRAFTING

Citation
I. Nikodemska et al., PREOPERATIVE AND EARLY POSTOPERATIVE ASSESSMENT OF THE INTERNAL THORACIC ARTERY BY TRANSCUTANEOUS DUPLEX ULTRASOUND IN CORONARY-ARTERY BYPASS-GRAFTING, International journal of cardiology, 66(1), 1998, pp. 39-44
Citations number
21
Categorie Soggetti
Cardiac & Cardiovascular System
ISSN journal
01675273
Volume
66
Issue
1
Year of publication
1998
Pages
39 - 44
Database
ISI
SICI code
0167-5273(1998)66:1<39:PAEPAO>2.0.ZU;2-P
Abstract
We examined internal thoracic artery by transcutaneous duplex ultrasou nd in 26 patients on four occasions: 4 (+/-2) days before the operatio n, and 61 (+/-8) minutes, 5 days and 53 (+/-3) days postoperatively. T here was dominant systolic flow in preoperative scans. After the opera tion a characteristic biphasic flow with increased peak diastolic velo city and a decrease in peak systolic/peak diastolic velocity ratio was detected in all patients. The pulsed Doppler spectrum was used to mea sure peak velocity, time averaged mean velocity and time averaged maxi mum velocity. Resting internal thoracic artery flows calculated using time averaged mean velocity were 30.9+/-5.4 ml/min preoperatively, 40. 7+/-6.3 ml/min immediately after surgery, 41.1+/-8.2 ml/min at 5 days and 40.1+/-4.9 ml/min at 53 days. There were no significant changes in resting internal thoracic artery flow between early and late postoper ative studies. Flow estimates calculated using 0.5xtime averaged maxim um velocity or time averaged mean velocity showed good agreement. Earl y postoperative measurements appear to be a good predictor of later ne sting graft flow. (C) 1998 Elsevier Science Ireland Ltd. All rights re served.