Cardiac diagnostic test results and outcomes in 44 dogs naturally infected with Trypanosoma cruzi
Abstract Background The protozoal parasite Trypanosoma cruzi causes myocarditis in dogs. Objectives To describe the cardiac diagnostic test results and outcomes of dogs naturally infected with T. cruzi. Animals Forty‐four client‐owned dogs. Methods Medical records were retrospectively reviewed to id...
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doaj-ce3f5e1d5fed4d4c8a471e7a6ad1daef2021-07-22T08:15:50ZengWileyJournal of Veterinary Internal Medicine0891-66401939-16762021-07-013541800180910.1111/jvim.16166Cardiac diagnostic test results and outcomes in 44 dogs naturally infected with Trypanosoma cruziDerek J. Matthews0Ashley B. Saunders1Alyssa C. Meyers2Sonya G. Gordon3Sarah A. Hamer4Department of Small Animal Clinical Sciences College of Veterinary Medicine and Biomedical Sciences, Texas A&M University College Station Texas USADepartment of Small Animal Clinical Sciences College of Veterinary Medicine and Biomedical Sciences, Texas A&M University College Station Texas USADepartment of Veterinary Integrative Bioscience Texas A&M University College Station Texas USADepartment of Small Animal Clinical Sciences College of Veterinary Medicine and Biomedical Sciences, Texas A&M University College Station Texas USADepartment of Veterinary Integrative Bioscience Texas A&M University College Station Texas USAAbstract Background The protozoal parasite Trypanosoma cruzi causes myocarditis in dogs. Objectives To describe the cardiac diagnostic test results and outcomes of dogs naturally infected with T. cruzi. Animals Forty‐four client‐owned dogs. Methods Medical records were retrospectively reviewed to identify dogs with an indirect fluorescent antibody test result for T. cruzi ≥1 : 80. Data collected included signalment, cardiac diagnostic test results (ECG, echocardiography, cardiac troponin I) and outcome. Outcomes were categorized as alive, dead (cardiac or noncardiac) or lost to follow up. Results ECG abnormalities were present in 41 dogs with ventricular arrhythmias (n = 28) and atrioventricular block (AVB) (n = 15) most commonly identified. Echocardiographic chamber enlargement was present in 28 dogs and most often included the right ventricle (RV) (n = 15) and left atrium (n = 12). Troponin was ≥2 times the reference range in 20/36 (56%) dogs. In univariate analysis using nonparametric Kaplan‐Meier, ventricular arrhythmias with a modified Lown score ≥2 (P = .02), presence of AVB (P = .04), and RV enlargement (P = .006) were associated with decreased survival times. Right ventricular enlargement (HR 3.6; 95% confidence interval [CI] 1.4‐9.3; P = .007) and higher body weight at presentation (HR 1.0; 95% CI 1.0‐1.1; P = .04) were associated with decreased time to death in the final explanatory multivariable model. Conclusions and Clinical Importance Cardiac abnormalities were common and variable, and RV enlargement was associated with shorter survival time. A diagnostic evaluation that includes screening for arrhythmias, echocardiography, and cTnI can provide useful information related to the characterization of heart disease in dogs seropositive for T. cruzi.https://doi.org/10.1111/jvim.16166canineChagas diseaseechocardiographyheartmyocarditistroponin |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Derek J. Matthews Ashley B. Saunders Alyssa C. Meyers Sonya G. Gordon Sarah A. Hamer |
spellingShingle |
Derek J. Matthews Ashley B. Saunders Alyssa C. Meyers Sonya G. Gordon Sarah A. Hamer Cardiac diagnostic test results and outcomes in 44 dogs naturally infected with Trypanosoma cruzi Journal of Veterinary Internal Medicine canine Chagas disease echocardiography heart myocarditis troponin |
author_facet |
Derek J. Matthews Ashley B. Saunders Alyssa C. Meyers Sonya G. Gordon Sarah A. Hamer |
author_sort |
Derek J. Matthews |
title |
Cardiac diagnostic test results and outcomes in 44 dogs naturally infected with Trypanosoma cruzi |
title_short |
Cardiac diagnostic test results and outcomes in 44 dogs naturally infected with Trypanosoma cruzi |
title_full |
Cardiac diagnostic test results and outcomes in 44 dogs naturally infected with Trypanosoma cruzi |
title_fullStr |
Cardiac diagnostic test results and outcomes in 44 dogs naturally infected with Trypanosoma cruzi |
title_full_unstemmed |
Cardiac diagnostic test results and outcomes in 44 dogs naturally infected with Trypanosoma cruzi |
title_sort |
cardiac diagnostic test results and outcomes in 44 dogs naturally infected with trypanosoma cruzi |
publisher |
Wiley |
series |
Journal of Veterinary Internal Medicine |
issn |
0891-6640 1939-1676 |
publishDate |
2021-07-01 |
description |
Abstract Background The protozoal parasite Trypanosoma cruzi causes myocarditis in dogs. Objectives To describe the cardiac diagnostic test results and outcomes of dogs naturally infected with T. cruzi. Animals Forty‐four client‐owned dogs. Methods Medical records were retrospectively reviewed to identify dogs with an indirect fluorescent antibody test result for T. cruzi ≥1 : 80. Data collected included signalment, cardiac diagnostic test results (ECG, echocardiography, cardiac troponin I) and outcome. Outcomes were categorized as alive, dead (cardiac or noncardiac) or lost to follow up. Results ECG abnormalities were present in 41 dogs with ventricular arrhythmias (n = 28) and atrioventricular block (AVB) (n = 15) most commonly identified. Echocardiographic chamber enlargement was present in 28 dogs and most often included the right ventricle (RV) (n = 15) and left atrium (n = 12). Troponin was ≥2 times the reference range in 20/36 (56%) dogs. In univariate analysis using nonparametric Kaplan‐Meier, ventricular arrhythmias with a modified Lown score ≥2 (P = .02), presence of AVB (P = .04), and RV enlargement (P = .006) were associated with decreased survival times. Right ventricular enlargement (HR 3.6; 95% confidence interval [CI] 1.4‐9.3; P = .007) and higher body weight at presentation (HR 1.0; 95% CI 1.0‐1.1; P = .04) were associated with decreased time to death in the final explanatory multivariable model. Conclusions and Clinical Importance Cardiac abnormalities were common and variable, and RV enlargement was associated with shorter survival time. A diagnostic evaluation that includes screening for arrhythmias, echocardiography, and cTnI can provide useful information related to the characterization of heart disease in dogs seropositive for T. cruzi. |
topic |
canine Chagas disease echocardiography heart myocarditis troponin |
url |
https://doi.org/10.1111/jvim.16166 |
work_keys_str_mv |
AT derekjmatthews cardiacdiagnostictestresultsandoutcomesin44dogsnaturallyinfectedwithtrypanosomacruzi AT ashleybsaunders cardiacdiagnostictestresultsandoutcomesin44dogsnaturallyinfectedwithtrypanosomacruzi AT alyssacmeyers cardiacdiagnostictestresultsandoutcomesin44dogsnaturallyinfectedwithtrypanosomacruzi AT sonyaggordon cardiacdiagnostictestresultsandoutcomesin44dogsnaturallyinfectedwithtrypanosomacruzi AT sarahahamer cardiacdiagnostictestresultsandoutcomesin44dogsnaturallyinfectedwithtrypanosomacruzi |
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1721291689063088128 |