ArticleJournal of veterinary internal medicine2026
Prognostic characteristics of preoperative serum total bilirubin concentration in myxomatous mitral valve disease in dogs undergoing mitral valve repair.
Article in Journal of veterinary internal medicine, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundWhile serum total bilirubin concentration (Tbil) has emerged as a potential prognostic marker in dogs with myxomatous mitral valve disease (MMVD) after mitral valve repair (MVR), its dose-response relationship and underlying pathophysiological mechanisms remain unclear. HYPOTHESIS/
objectivesTo characterize the dose-response relationships between preoperative Tbil and 2-year all-cause mortality after MVR and explore the role of right-sided cardiac compromise. ANIMALS: Two thousand sixty-three (cohort A) and 301 (cohort B) dogs with MMVD undergoing MVR at a single center.
methodsThis retrospective cohort study used multivariable Cox regression to assess the association between Tbil and 2-year mortality in cohort A. Cohort B evaluated relationships among Tbil, hepatic congestion, and right-sided overload.
resultsIn cohort A, preoperative Tbil showed a linear positive association with 2-year all-cause mortality even within reference interval (ie, adjusted hazard ratio [0.3 vs. 0.1 mg/dL]: 1.33; 95% CI, 1.04-1.70). This association disappeared in dogs surviving beyond 30 days. Furthermore, higher preoperative Tbil levels were associated with an increased incidence of cardiac-related 30-day deaths in cohort A, and with right-sided cardiac overload at discharge in cohort B, which resolved by one month postoperatively. Hepatic congestion was associated with right-sided overload but not Tbil levels. CONCLUSIONS AND CLINICAL IMPORTANCE: Subtle preoperative Tbil elevations were associated with short-term all-cause mortality and transient right-sided overload, warranting careful interpretation even within reference intervals. However, the pathophysiological mechanism linking Tbil to postoperative prognosis remains to be elucidated. ABSTRACT TRANSLATED TO JAPANESE: ビリルビン (Tbil) は、 (MVR) の (MMVD) のにおけるのがされているが、そのおよびはとしてである。 Tbil と MVR 2とのをらかにし、とのをすること。で MVR をけた MMVD の、コホートA 2,063 およびコホートB 301 。とろきコホートでは、コホートA において Tbil と 2 とのを Cox モデルによりした。コホート B では、 Tbil とうっおよびのをした。コホートA において、 Tbil はであっても2とのをした (ハザード [0.3 0.1 mg/dL]: 1.33、95% 1.04-1.70)。このは 30をえてしたではした。さらに、 Tbil は、コホートA における 30 のの、およびコホートB におけるののとし、このは 1 かまでにした。うっはとしたが、 Tbil とはしなかった。とのわずかな Tbil は、およびのとしており、のであってもになをつがある。ただし、 Tbil とをびつけるはとしてらかではない。.
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