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- Title
USE OF SQUARE-WAVE ELECTROMAGNETIC FLOWMETER DURING DIRECT ARTERIAL SURGERY, BEFORE AND AFTER LUMBAR SYMPATHECTOMY IN PERIPHERAL VASCULAR SURGERY.
- Authors
Lee, Bok Y.; Madden, John L.; McDonough, William B.
- Abstract
The square-wave, electromagnetic flowmeter is discussed with reference to its significant contribution to vascular surgery in providing an instantaneous quantitative measurement of mean blood flow rates in intact vessels. The flowmeter was utilized in the operating room and in the experimental laboratory to investigate the hemodynamic adjustments which accompany occlusive peripheral vascular disease, traumatic lesions (arteriovenous fistulas), and pathologic changes in the arterial wall (aneurysm). Experimental data are provided which support lumbar sympathectomy as an effective, adjunctive, surgical treatment for occlusive arterial disease, based on the observation that a persistent, increase in arterial flow rates to the sympathectomized limb is sustained for 32 months or longer in the experimental animal. Lumbar sympathectomy effects all additional increase in arterial flow rate over and above that obtained with direct arterial surgery. The conclusions of this study are: 1. Analysis of the patterns of pulsatile, blood flow can aid prognosis by providing information of extent of arteriosclerotic involvement in the distal arterial tree (and distal arterial runoff). 2. The square-wave, electromagnetic flowmeter before and after lumbar sympathectomy shows an increase in art arterial blood flow. 3. The adjunct, of lumbar sympathectomy effects a further increase in arterial flow over and above that obtained with direct arterial surgery. 4. Lumbar sympathectomy has maintained a persistent increase in arterial flow in experimental animals who have been followed up to date to 32 months. 5. Immediate documentation of the effectiveness of reconstructive arterial surgery, either alone or combined with lumbar sympathectomy, can be obtained by direct measurement of the arterial flow before and after each operation. 6. The arterial flow after lumbar sympathectomy is markedly enhanced by the intravenous administration of papaverine when contrasted with the control studies on the unoperated opposite extremity. Accordingly, the use of papaverine in conjunction with lumbar sympathectomy is recommended.
- Subjects
FLOW meters; VASCULAR surgery; BLOOD flow; BLOOD circulation; SYMPATHECTOMY
- Publication
Vascular Surgery, 1969, Vol 3, Issue 4, p218
- ISSN
0042-2835
- Publication type
Article
- DOI
10.1177/153857446900300403