J.Jpn. Surg. Soc.. 82(9): 1042-1046, 1981
Report on the annual meeting
STUDY ON THE HEMODYNAMICS OF THE ABDOMINAL VESSELS AND ITS APPLICATION TO SURGERY
|
First Department of Surgery, School of Medicine, Hokkaido University Fumio Sano, Yohichi Kasai, Yoshimi Nakanishi |
Experimentally, more than 70% stenosis, so called critical stenosis, in the luminal diameter caused the abrupt drop in blood pressure and flow of the distal aorta to the stenosis. If stenotic segment became longer, even less than 60% stenosis caused the decrease in blood pressure and flow. The abrupt occlusion of the abdominal aorta showed the increase in blood pressure of the proximal aorta to the stenosis by 15% of its initial value. In sudden release of the occlusion, blood pressure falled by 30% of the initial value. This change may give rise to shock or cardiac arrest. Release from complete occlusion to 70% stenosis should be as slow as possible and should take time more than 60 seconds. This point is the most importent factor to prevent this abrupt change of hemodynamics.
Clinically, blood pressure and flow of the following vessels were measured and studied. 1. celiac artery and its branches,2. superior and inferior mesenteric arteries, 3. renal artery, 4. abdominal aorta and iliac artery, and 5. venous system. Cases performed abdominal surgery and dealed with hemodynamics were presented. These included the patients with hepatoma, portal hypertension, renovascular hypertension, cancer of the rectum, abdominal aortic aneurysm and Leriche's syndrome and the patients undergoing esophageal reconstruction and omental transplantation and so on.
Clinical application and its significance of blood pressure and flow measurement to the patients with vascular condition were discussed.
To read the PDF file you will need Adobe Reader installed on your computer.