Document Detail

Effect of protective padding on forelimb intracompartmental muscle pressures in anesthetized horses.
MedLine Citation:
PMID:  3994136     Owner:  NLM     Status:  MEDLINE    
Wick catheters were used to measure intracompartmental muscle pressures (ICMP) within the long heads of the triceps brachii and extensor carpi radialis muscles of 8 horses maintained under halothane anesthesia while their breathing was controlled by intermittent positive-pressure ventilation. Blood gas, cardiac output, and blood pressure determinations were monitored to maintain a stable plane of anesthesia. The horses were positioned in left lateral recumbency and were placed sequentially on each of 4 contact surfaces for 1 hour. The 4 surfaces used for each horse were concrete, foam rubber, air dunnage bag, and a water mattress. Hematologic and biochemical determinations were made before and 24 hours after anesthesia. All horses recovered from the anesthesia. One horse had forelimb lameness for 36 hours after anesthesia, which was clinically diagnosed as a myoneuropathy. The ICMP values were markedly elevated in the muscle bellies of the lower limb of all horses. Supporting the horse on a water mattress caused the least dramatic pressure elevation and foam caused the most. The triceps muscle and, to a lesser extent, the extensor carpi radialis muscle of the lower limb are at risk of ischemia in anesthetized horses because the ICMP may exceed the critical closing pressure of 30 mm of Hg required for capillary blood flow.
W A Lindsay; P J Pascoe; W N McDonell; M L Burgess
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  American journal of veterinary research     Volume:  46     ISSN:  0002-9645     ISO Abbreviation:  Am. J. Vet. Res.     Publication Date:  1985 Mar 
Date Detail:
Created Date:  1985-06-07     Completed Date:  1985-06-07     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0375011     Medline TA:  Am J Vet Res     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  688-91     Citation Subset:  IM    
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MeSH Terms
Anesthesia, General* / veterinary*
Catheterization / veterinary*
Construction Materials
Horses / physiology*
Muscles / physiology*
Surface Properties
Reg. No./Substance:
7732-18-5/Water; 9006-04-6/Rubber

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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