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Patient and haemodynamic factors affecting intraoperative graft flow during coronary artery bypass grafting: an observational pilot study.

Abstract：

:Transit-time flow measurement (TTFM) is frequently used to evaluate intraoperative quality control during coronary artery bypass grafting (CABG) and has the ability to assess graft failure intraoperatively. However, perioperative factors affecting TTFM during CABG remain poorly understood. Patients who underwent CABG at a single institution between July 2016 and May 2018 were prospectively evaluated. TTFM and blood viscosity were measured haemodynamically, while mean flow (mL/min), pulsatility index, and diastolic filling were recorded. Arterial blood gas was analysed immediately after left internal mammary artery to left descending artery anastomosis and before sternal closure. Factors associated with TTFM were assessed using multiple linear regression analysis. We evaluated 57 of the 62 patients who underwent CABG during the study period, including 49 who underwent off-pump and 8 who underwent on-pump surgeries. Blood viscosity was not significantly associated with TTFM (p > 0.05). However, TTFM was significantly associated with body mass index, systolic blood pressure, and cardiac index (p < 0.05 each). In conclusion, maintaining the SBP in the perioperative period and maintaining the CI with inotropic support or fluid resuscitation can be important in improving blood flow of graft vessels after surgery.

journal_name

Sci Rep

journal_title

Scientific reports

authors

Lee SW,Jo JY,Kim WJ,Choi DK,Choi IC

doi

10.1038/s41598-020-69924-w

subject

Has Abstract

pub_date

2020-07-31 00:00:00

pages

12968

issue

1

issn

2045-2322

pii

10.1038/s41598-020-69924-w

journal_volume

10

pub_type

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