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Research Note: Heart Function Values & Parvoviral Infection

Cardiology

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September 2021

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Canine parvovirus can result in myocarditis via primary infection of myocardial cells or secondary to systemic inflammatory response syndrome and sepsis. Echocardiography is a safe, relatively inexpensive, and noninvasive diagnostic modality for evaluating heart function; however, hypovolemia caused by dehydration decreases preload, which affects echocardiographic indexes of cardiac function and may affect the sensitivity of this diagnostic assessment. Two-dimensional speckle tracking echocardiography (2D-STE) has introduced 2 new variables (ie, strain [St], strain rate [SR]) for cardiac assessment and is minimally influenced by preload. 

This study measured St and SR values using 2D-STE in dogs with parvovirus. Results demonstrated significantly impaired values in all parvovirus patients, indicating systolic myocardial dysfunction; impaired values were particularly notable in severely affected dogs and dogs that died.

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