Related Experiment Video
Updated: May 30, 2026
Simultaneous Electrocardiography Recording and Invasive Blood Pressure Measurement in Rats
Published on: January 31, 2019
Evaluation of oscillometric and vascular access port arterial blood pressure measurement techniques versus implanted
Raphael J Zwijnenberg1, Carlos L del Rio, Rami M Cobb
1Pfizer Animal Health Australia, 38-42 Wharf Rd, West Ryde, NSW 2114, Australia. raphael.j.zwijnenberg@pfizer.com
Objective:
To compare the use of a semi-invasive vascular access port (VAP) device or noninvasive oscillometry versus invasive telemetry for blood pressure measurements in cats.
Animals:
6 healthy cats.
Procedures:
30 days before the study, all cats received an implanted telemeter and a VAP device. During normotension and experimentally induced hypertension, blood pressure was measured with the implanted devices and with noninvasive oscillometry at 4 time points.
Results:
Compared with invasive telemetry, VAP had a correlation coefficient from 0.8487 to 0.9972, and noninvasive oscillometry had a correlation coefficient from 0.7478 to 0.9689.
Conclusions And Clinical Relevance:
Use of the VAP device and noninvasive oscillometry had a high degree of correlation with invasive telemetry as the gold standard for blood pressure measurement. Use of a VAP device resulted in a slightly higher degree of correlation, compared with noninvasive oscillometry.
