Transit-Time Blood Flow Measurements in Sequential Saphenous Coronary Artery Bypass Grafts
| Autor: | Håvard Nordgaard, Nicola Vitale, Rune Haaverstad |
|---|---|
| Rok vydání: | 2009 |
| Předmět: |
Male
Reoperation Pulmonary and Respiratory Medicine medicine.medical_specialty Time Factors Bypass grafting Hemodynamics Transit time Bypass grafts Pulsatility index Angina Pectoris Internal medicine medicine Humans Saphenous Vein Coronary Artery Bypass Mammary Arteries Pulse Aged Retrospective Studies business.industry Blood flow Middle Aged Coronary Vessels Surgery surgical procedures operative medicine.anatomical_structure Regional Blood Flow Circulatory system Cardiology Female Cardiology and Cardiovascular Medicine business Blood Flow Velocity Follow-Up Studies Artery |
| Zdroj: | The Annals of Thoracic Surgery. 87:1409-1415 |
| ISSN: | 0003-4975 |
| DOI: | 10.1016/j.athoracsur.2009.02.018 |
| Popis: | Little information is available on transit-time flow measurements of sequential saphenous vein grafts. The aim of the study was evaluation of mean blood flow and pulsatility index of sequential saphenous vein grafts in a large population of patients operated on with coronary artery bypass grafting.In 581 patients 1,390 grafts were nested into left internal mammary artery to left anterior descending artery, single vein grafts, or double and triple sequential vein grafts, and analyzed.Within the single vein graft group there were no differences between flow of grafts to different target vessels except for diagonals (diagonal versus obtuse marginal, p0.001; versus posterior descending artery, p = 0.035; versus right coronary artery, p = 0.003). Flows measured in single vein grafts were significantly lower than in double (p0.001) and triple sequential vein grafts (p0.001). Flows were lower in double versus triple sequential vein grafts (p = 0.017) and higher in men versus women (p0.001). Mean pulsatility index of vein grafts were lower in the left versus the right coronary system, 2.0 +/- 0.01 and 2.4 +/- 0.06, respectively (p0.001). Between sex and groups of vein grafts within each coronary system, mean pulsatility index had similar values.Blood flow increases from single to double and up to triple sequential grafts. Single grafts directed to diagonals have the lowest flow. Graft blood flows are higher in male versus female patients. Single, double, and triple saphenous vein grafts have similar pulsatility indexes. Pulsatility index of grafts to the right coronary system is significantly higher than that of grafts to the left coronary system. |
| Databáze: | OpenAIRE |
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