Comparison of ultrasonic Doppler flow monitor, oscillometric, and direct Comparison of ultrasonic Doppler flow monitor, oscillometric, and direct arterial blood pressure measurements in anesthetized dogs

Abstract

This study was performed to evaluate three different noninvasive blood pressure measurement methods (NIBP) in comparison with direct blood pressure measurements in anesthetized dogs. Ten normal healthy Beagle dogs (mean age; 3.7 ± 1.01 yrs, mean body weight 10.2 ± 1.15 kg) were enrolled in this study. The BP was measured by three different methods, i.e., Doppler (DOP), oscillometric and high density oscillometric (HDO), simultaneously for 5 times in each subject under anesthesia at three different locations (right, left front legs and tail). The blood pressure value measured by Doppler method was the most close to the value measured by the direct method. Although the accuracy and consistency of the BP measured by 3 different non-invasive methods were differed by the method, all methods except conventional oscillometric method were acceptable for monitoring systolic blood pressure in anesthetic dogs and the inter-measurement variations in DOP and HDO was minimal enough not to affect the consistency of test result.