Utility of electrical velocimetry-based noninvasive stroke volume variation in predicting fluid responsiveness under different ventilation modes in anaesthetized dogs

Abstract

We evaluated the utility of noninvasive stroke volume variation (SVV) as a functional haemodynamic predictor for fluid responsiveness under different ventilation modes [assist control (A/C), synchronized intermittent mandatory ventilation (SIMV), and continuous positive airway pressure (CPAP)] in 45 anaesthetized dogs, using an electrical velocimetry device. Receiver operating curve analysis confirmed the best predictive value during SVV_A/C (12.5% of cut-off value; 75% sensitivity and 86% specificity) followed by SVV_SIMV (13.5% of cut-off value; 75% sensitivity and 75% specificity), while no statistically significance detected during SVV_CPAP (P > .05). These data suggest that SVV is useful for the prediction of fluid responsiveness in laboratory dogs during A/C and SIMV, while its reliability during CPAP is poor. This article is protected by copyright. All rights reserved.

Keywords: cardiac output; dog; electrical velocimetry; fluid responsiveness; stroke volume variation; ventilation mode.