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Colonic Luminal Pressure in Horses With Strangulating and Nonstrangulating Obstruction of the Large Colon
Author(s) -
MOORE RUSTIN M.,
HANCE STEPHEN R.,
HARDY JOANNE,
MOORE BONNIE RUSH,
EMBERTSON ROLF M.,
CONSTABLE PETER D.
Publication year - 1996
Publication title -
veterinary surgery
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.652
H-Index - 79
eISSN - 1532-950X
pISSN - 0161-3499
DOI - 10.1111/j.1532-950x.1996.tb01389.x
Subject(s) - medicine , gastroenterology
Colonic luminal pressure (median, range) measured during ventral midline celiotomy in 69 horses with strangulating obstruction (SO) of the large colon (SO; ≥ 270° large colon volvulus; 27 cm H 2 O: 2 to 80 cm H 2 O) was greater ( P =.0023) than that measured in 37 horses with nonstrangulating obstruction (NSO) of the large colon (NSO; ≤ 180° volvulus or a nonstrangulating displacement; 18 cm H 2 O; 6 to 46 cm H 2 O). Sixty‐five percent (45 of 69) of horses with SO and all horses with NSO survived. Survival analysis was restricted to 59 horses with large‐colon SO that survived to hospital discharge or met the criteria specified for classification as nonsurvivors. Colonic luminal pressure in nonsurvivors (48.5 cm H 2 O; 34 to 80 cm H 2 O) was higher ( P =.0001) than that measured in survivors (18 cm H 2 O; 2 to 50 cm H 2 O) of SO. From response operating characteristic curves, a luminal pressure of 38 cm H 2 O optimized the distribution of horses with SO into survivor and nonsurvivor groups. Sensitivity, specificity, and positive and negative predictive values for a colonic luminal pressure greater than 38 cm H 2 O in predicting nonsurvival were 0.89, 0.91, 0.72 and 0.97, respectively. Measurement of colonic luminal pressure may be useful for predicting survival in horses with colonic volvulus.