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Published on: May 15, 2009
Noninvasive oscillometric measurement of blood pressure in baboons (Papio cynocephalus)
Abstract:
The accuracy and reliability of noninvasive measurement of blood pressure in the forearms of baboons by means of an automated oscillometric method were evaluated. Comparisons of 255 oscillometric determinations of systolic, diastolic and mean arterial pressure in eight anesthetized animals with simultaneously taken direct radial artery pressure measurements revealed average differences and standard deviations of +0.14 (+/- 9.05), +4.34 (+/- 6.75), and -1.01 (+/- 5.84) Torr, respectively. Computation of statistical error bounds indicated that any single oscillometric reading could be expected to fall within 9.6%, 11.0% nd 7.4% of directly measured systolic, diastolic, and mean blood pressure with a probability of 0.90. The oscillometric determinations accurately tracked rapid changes in pressure caused by intravenous infusion of pressor and depressor drugs. The method provided fast, reliable readings of arterial pressure without the use of microphones or other transducers that require precise placement and low-noise environments.
Related Concept Videos
Sites for measuring blood pressure
The Brachial Artery: Primary Site for Blood Pressure Measurement
Equipments Used To Measure Blood Pressure
This invasive approach involves cannulating a peripheral artery. During each cardiac contraction, pressure generates mechanical motion within the catheter, transmitted through rigid, fluid-filled tubing to a transducer. This transducer converts mechanical motion into electrical signals displayed as waveforms on a monitor. An automatic flushing system prevents blood backflow. Due to the potential risk of unexpected arterial blood loss, this method is primarily used in intensive...
Assessment of blood pressure in brachial artery(one-step method)
Prepare for the Procedure:
Assessment of blood pressure in brachial artery(two-step method)
Special considerations while measuring blood pressure
Monitoring Both Arms:
Monitoring BP in both arms during the initial assessment is advisable, as the systolic value may differ by five to ten mm Hg between arms. For subsequent BP assessments, use the arm with the higher reading.
Measurement of Blood Pressure

