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Evaluation of echocardiography and cardiac biomarker concentrations in dogs with gastric dilatation volvulus

Aona, B.D., Rush, J.E., Rozanski, E.A., Cunningham, S.M., Sharp, C.R.ORCID: 0000-0002-1797-9783 and Freeman, L.M. (2017) Evaluation of echocardiography and cardiac biomarker concentrations in dogs with gastric dilatation volvulus. Journal of Veterinary Emergency and Critical Care, 27 (6). pp. 631-637.

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To assess abnormalities in concentrations of cardiac troponin I (cTnI), lactate, and N-terminal pro-B-type natriuretic peptide (NT-proBNP) in relation to arrhythmias, echocardiographic measurements, and survival in dogs with gastric dilatation volvulus (GDV).

Prospective observational study.

University hospital.

Twenty-two dogs with naturally occurring GDV.

Concentrations of cTnI, plasma lactate, and NT-proBNP were recorded at presentation to the emergency room, the time closest to echocardiography, and the highest recorded concentrations during hospitalization.


Measurements and Main Results
Cardiac rhythms were categorized on a 0–4 scale (0 = no ventricular premature complexes [VPCs], 1 = single VPCs, 2 = bigeminy or trigeminy, 3 = couplets or triplets, and 4 = R-on-T phenomenon or ventricular tachycardia). Echocardiography was performed 6–18 hours postoperatively. Fifteen dogs had ventricular arrhythmias during hospitalization (Grade 1 [n = 9], Grade 4 [n = 6]). The highest recorded cTnI concentration was significantly higher in the dogs with Grade 4 (P = 0.002) or Grade 1 (P = 0.001) arrhythmias compared to dogs without arrhythmias. Plasma lactate was significantly correlated with left ventricular internal diameter in diastole (r = −0.52, P = 0.01) and systole (r = −0.57, P = 0.006), left ventricular free wall in diastole (LWDd, r = 0.59, P = 0.004), and interventricular septal thickness in diastole (IVDs, r = 0.65, P = 0.001). Dogs that did not survive to 1 week postdischarge (3/22) had a significantly thicker LVWd (P = 0.04) and IVSd (P = 0.05), and received significantly less fluids in the first 24 (P = 0.02) and 48 hours (P = 0.03) of hospitalization.

Concentrations of cTnI and NT-proBNP increased during hospitalization, but only cTnI concentrations were significantly higher in dogs with a higher arrhythmia grade. Additional research on the potential role of serial measurement of biomarkers in dogs with GDV is warranted.

Item Type: Journal Article
Murdoch Affiliation(s): School of Veterinary and Life Sciences
Publisher: Blackwell Publishing Inc.
Copyright: © Veterinary Emergency and Critical Care Society 2017
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