Retrograde internal mammary to coronary artery anastomoses
Détails
ID Serval
serval:BIB_3C91691B5240
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Institution
Titre
Retrograde internal mammary to coronary artery anastomoses
Périodique
Thoracic and Cardiovascular Surgeon
ISSN
0171-6425
Statut éditorial
Publié
Date de publication
06/1989
Peer-reviewed
Oui
Volume
37
Numéro
3
Pages
143-6
Notes
Journal Article --- Old month value: Jun
Résumé
In an effort to expand the utilization of the internal mammary artery (IMA) for revascularization of the distal coronary artery branches, distally pedicled retrograde internal mammary arteries (retro-IMA) were evaluated in 10 mongrel dogs with a mean weight of 38 +/- 13 kg. One IMA was transected at it's origin (retro-IMA) and compared to the contralateral IMA which was transected at the level of the 5th intercostal space. At a mean systemic pressure of 68 +/- 15 mmHg the mean pressure measured at the tip of the IMAs with antegrade flow was 63 +/- 14 mmHg in the retro-IMAs with retrograde flow (p less than 0.05; pressure ratio 0.8). With the same mean systemic pressure, mean antegrade free flow of the IMAs was assessed 97 +/- 43 ml/min versus 48 +/- 13 ml/min in the retro-IMAs with retrograde flow (p less than 0.005; flow ratio 0.5). Left retro-IMA to coronary artery anastomosis was performed in 6 animals to the distal left anterior descending (LAD) coronary artery and in 2 animals to the distal left obtuse marginal branch. Right retro-IMA to coronary artery anastomosis to the right posterior descending coronary artery was performed in 2 animals. The LAD coronary artery was ligated proximally to the retro-IMA to coronary artery anastomosis while the retro-IMA remained crossclamped. After documentation of significant ischemia (EKG, left atrial pressure), the crossclamp of the retro-IMA graft was removed. Subsequent normalisation of EKG and left atrial pressure occurred in all animals. We conclude that the canine retro-IMA delivers significant retrograde flow and discuss a possible use in humans.
Mots-clé
*Anastomosis, Surgical
Animals
Blood Pressure
Coronary Disease/etiology/physiopathology
Coronary Vessels/*surgery
Dogs
Electrocardiography
Ligation
Mammary Arteries/physiology/*surgery
Postoperative Period
Regional Blood Flow
Thoracic Arteries/*surgery
Pubmed
Web of science
Création de la notice
14/02/2008 15:18
Dernière modification de la notice
20/08/2019 14:32