Clinical findings associated with development of postoperative reflux and short‐term survival after small intestinal surgery in geriatric and mature nongeriatric horses
2019
Boorman, Sophie | Stefanovski, Darko | Southwood, Louise L.
OBJECTIVE: To determine risk factors, especially age, associated with postoperative reflux (POR; >2 L of reflux present upon intubation), high‐volume POR (≥20 L in 24 hours), and short‐term outcome after small intestinal (SI) surgery. STUDY DESIGN: Retrospective case‐control study. SAMPLE POPULATION: Horses aged ≥16 years (geriatric; range, 16–30; n = 44) and <16 years (mature; range, 2–15; n = 39) with an SI surgical lesion that survived general anesthesia and did not have a second exploratory celiotomy during the same visit. METHODS: Medical records (2009–2015) were reviewed; perioperative variables were evaluated for associations with outcomes by using multivariable logistic regression. RESULTS: Postoperative reflux was associated with an increasing packed cell volume at admission (odds ratio [OR], 1.08; 95% CI, 1.00–1.16; P = .042) and presence of nasogastric reflux at admission (OR, 4.61; 95% CI, 1.3–15.69; P = .014). High‐volume POR was associated with an increasing glycemia at admission (OR, 1.19; 95% CI, 1.01–1.40; P = .041), presence of nasogastric reflux at admission (OR, 10.05; 95% CI, 2.21–45.74; P = .003), and SI resection (OR, 10.52; 95% CI, 1.81–61.25; P = .009). Increasing surgical time (OR, 2.50; 95% CI, 1.16–5.29; P = .019) and high‐volume POR (OR, 6.37; 95% CI, 2.12–19.12; P = .001) were associated with nonsurvival. CONCLUSION: Age, considered as both a continuous variable and a categorical variable, was not associated with the development of POR, high‐volume POR, or nonsurvival. CLINICAL SIGNIFICANCE: Age does not influence the occurrence of POR and should not negatively impact an owner's decision to pursue surgery in aged horses.
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