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CONTINUING SCIENTIFIC EDUCATION IN VETERINARY MEDICINE

Wednesday, 30 November 2022

Transient myocardial thickening in two Toxoplasma gondii-positive cats

  • Both cats received appropriate antiprotozoal and cardiovascular therapy
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ecocardio gatto toxoIn this report, the authors provide detailed clinical, laboratory, electrocardiographic and echocardiographic descriptions of two Toxoplasma gondii-positive cats diagnosed with transient myocardial thickening (TMT) and acute myocardial injury (MI). In both cases, aetiological diagnosis was based on the antibody screening test (all cats had IgM titres ⩾1:64) and MI was demonstrated by a concomitant severe increase of the serum concentration of cardiac troponin I (5.1-23.6 ng/ml; upper hospital limit <0.2 ng/ml). In both cats, TMT and MI were aggravated by left atrial dilation and dysfunction, as well as congestive heart failure. In one cat, atrial standstill was also documented, while the other cat showed an intracardiac thrombus. Both cats underwent an extensive diagnostic work-up aimed at excluding additional comorbidities that could contribute to able to contribute to TMT and MI, and received appropriate antiprotozoal (ie, clindamycin) and cardiovascular therapy (eg, furosemide, pimobendan and clopidogrel). This was followed by a simultaneous decline in T gondii serology titres, normalisation of troponin level and the resolution of clinical, electrocardiographic, radiographic and echocardiographic abnormalities. In the light of these results, therapies were interrupted and subsequent controls ruled out any disease relapse.

In conclusion, although T gondii represents an often-cited cause of myocarditis in feline medicine, the existing literature on the demonstration of T gondii-associated cardiac compromise in cats is extremely limited. Accordingly, this report provides a useful contribution to pertinent scientific literature since it describes TMT and acute MI in two T gondii-positive cats.

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Written by
Antonio Maria Tardo Med Vet PhD Student

Read 30 times Last modified on Monday, 28 November 2022 22:03

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