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Query: UMLS:C0162871 (abdominal aortic aneurysm)
 8,664 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

The hemodynamic effects of prenalterol, a new beta1-adrenoreceptor agonist, on hypotension induced by a thoracic epidural block extending between T1 and T12 and thereby blocking the cardiac sympathetic supply have been studied in eight patients scheduled for abdominal aortic aneurysm resection. The thoracic epidural block induced a drop in blood pressure, due to a reduction in cardiac output and systemic vascular resistance. Intravenous infusion of 10 mg of prenalterol rapidly and effectively reversed the hypotension by an increase in cardiac output without any effects on systemic vascular resistance or heart rate. The results indicate that prenalterol is a pure beta1 agonist with a marked inotropic but no chronotropic property.
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PMID:Hemodynamic effects of prenalterol, a beta1-adrenoreceptor agonist, in hypotension induced by high thoracic epidural block in man. 3 12

A thoracic epidural block from T1 to T12 was performed with plain prilocaine in four patients with coronary artery disease who were scheduled for abdominal aortic aneurysm surgery. The hemodynamic effects of the block consisted of marked reduction in arterial blood pressure due to impairment of cardiac performance and reduction in systemic vascular resistance. The heart rate decreased moderatetly. The epidural block induced a marked reduction in coronary vascular resistance with only a moderate decrease in coronary sinus blood flow. The myocardial oxygen and lactate utilization decreased in parallel to the decrease in cardiac work. In spite of the absence of arrhythmias and ST-T-segment changes following the epidural block, regional myocardial dysoxia could not be ruled out with the present methods. Administration of the cardioselective beta 1-adrenoreceptor agonist prenalterol increased cardiac performance and thereby arterial blood pressure, but did not affect the systemic or coronary vascular resistance.
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PMID:Effects of thoracic epidural block and prenalterol on coronary vascular resistance and myocardial metabolism in patients with coronary artery disease. 737 99

Reconstruction of several intercostal arteries is inevitable in surgical treatment of thoraco-abdominal aortic aneurysm. A Dacron inverted-Y shaped graft was fashioned by cutting one of two graft legs and making an elliptical patch, like a cobra-head. Once the elliptical patch was sutured to the orifices of the intercostal arteries (usually from T9 to T12) with running sutures, selective intercostal arterial perfusion was initiated. After completion of aneurysmectomy, the distal end of the elliptical patch graft was sutured to the main tube graft. This method is easier and faster and results in a decreased incidence of spinal cord injury.
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PMID:A new suture technique for reconstruction of intercostal arteries during thoracoabdominal aortic aneurysmal surgery. 1055 Jul 27