Effect of tourniquet occlusion on peripheral blood pooling and ventricular function

H. O. Klein, E. Brodsky, R. Ninio, A. Bakst, E. Di Segni, V. Oren, B. Beker, E. Kaplinsky

Research output: Contribution to journalArticlepeer-review

Abstract

Rotating tourniquets are traditionally part of the treatment of acute pulmonary edema. However, their effectiveness has been questioned. A radioisotope technique was therefore used to evaluate directly the increments in the blood volume of the leg after venous occlusion using a pressure of 60 mmHg in 26 patients with left ventricular (LV) dysfunction following myocardial infarction. The increment in mean radionuclide count at serial 15-second intervals (reflecting the blood volume in the leg distal to the occlusion) increased significantly from the pre-occlusion value by 46 +/- 26% (p less than 0.0005). Thus satisfactory trapping of blood is achieved even in LV failure. However, mean ejection fraction decreased slightly but significantly from 0.23 +/- 0.10 to 0.21 +/- 0.10 (p less than 0.05), a decrease observed in 18 of the 26 patients. LV end-diastolic and end-systolic volume equivalents tended to decrease slightly, but not in all patients. Mean stroke volume and cardiac output equivalents were reduced by 14% (p less than 0.0005), while calculated peripheral resistance increased significantly. The present study fails to support the hypothesis that preload reduction by tourniquets improves LV function.

Original languageEnglish
Pages (from-to)32-34
Number of pages3
JournalHarefuah
Volume116
Issue number1
StatePublished - 1 Jan 1989

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