Echocardiographic indicators of fluid responsiveness in hospitalized dogs with compromised hemodynamics and tissue hypoperfusion

Objective To evaluate the accuracy of selected echocardiographic variables used to predict fluid responsiveness in hospitalized dogs with compromised hemodynamics and tissue hypoperfusion. Design Diagnostic test study in a prospective cohort of hospitalized dogs. Setting Veterinary referral clinics. Animals Forty‐four hospitalized dogs with compromised hemodynamics and tissue hypoperfusion were utilized in this study. Interventions Echocardiographic examination before and after fluid replacement with 30 ml/kg of lactated Ringer's solution. Measurements and Main Results Pre‐fluid replacement measurements of velocity of transmitral E wave (E‐peak), the left ventricular end‐diastolic internal diameter normalized to body weight (LVIDdN), and the left ventricular end‐systolic internal diameter normalized to body weight (LVIDsN) were significantly lower in fluid‐responsive patients compared with nonresponders (P