Subtourniquet pressures generated by application of wide-rubber tourniquets in standing, sedated horses.
Vet Surg
; 48(3): 417-423, 2019 Apr.
Article
in En
| MEDLINE
| ID: mdl-30773652
ABSTRACT
OBJECTIVE:
To determine the influence of location and movement on subtourniquet pressure (STP) generated by application of a wide-rubber tourniquet (WRT) on equine limbs. STUDYDESIGN:
Randomized experimental cross-over design. ANIMALS Six standing, sedated horses.METHODS:
Horses were sedated with detomidine hydrochloride (0.2 µg/kg IV), and 4 investigators applied WRTs to the antebrachium (AB), gaskin (GK), and midmetacarpus (MC) of each horse in a predetermined, randomized order. Subtourniquet pressure was consequently measured at 10-minute intervals (T0, T10, T20, T30) for 30 minutes. Indirect systolic blood pressure (SBP) was measured presedation, postsedation, and throughout the tourniquet application period. Target STP was established as SBP + 100 mm Hg. Limb movements at each location were classified as none, low, moderate, or high, on the basis of counts and magnitude.RESULTS:
Mean STP did not change with time (P = .93) and exceeded SBP by 163 mm Hg (95% CI 122-205), 185 mm Hg (95% CI 156-214), and 402 mm Hg (95% CI 351-454) at the AB, GK, and MC, respectively. Mean STP at each location exceeded the target STP in 59 of 70 (81%) of the trials. Limb movements affected STP generated by tourniquets at the AB (P = .04) and MC (P < .0001) but not at the GK (P = .67).CONCLUSION:
Wide-rubber tourniquets applied at the AB, GK, and MC generated STP >100 mm Hg above SBP for 30 minutes in standing, sedated horses. CLINICALSIGNIFICANCE:
Wide-rubber tourniquets as applied in this study can achieve and maintain the current recommended STP (SBP + 100 mm Hg) for equine IV regional limb perfusion. Number and magnitude of limb movement can decrease STP over time, potentially reducing the efficacy of a WRT.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Pressure
/
Tourniquets
/
Horses
Limits:
Animals
Language:
En
Journal:
Vet Surg
Year:
2019
Document type:
Article