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Updated: Jul 6, 2026

Simultaneous Electrocardiography Recording and Invasive Blood Pressure Measurement in Rats
Published on: January 31, 2019
Differences in blood pressure values obtained with automated and manual methods in medical inpatients
Linda Bern1, Monica Brandt, Nwanneka Mbelu
1Medical Unit, Providence Portland Medical Center, Portland, OR, USA.
Abstract:
Measurement of blood pressure is done frequently in hospitalized patients with an automated, noninvasive blood pressure device. While manufacturers have made significant design improvements which may have improved the accuracy of these devices, limited research is available on their performance in clinical practice. The purpose of this study was to determine the accuracy of a contemporary automated, noninvasive blood pressure device in hospitalized medical patients.
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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...
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
Assessment of blood pressure in brachial artery(two-step method)
Sites for measuring blood pressure
The Brachial Artery: Primary Site for Blood Pressure Measurement
Pre-Procedural Guidelines for Assessing Blood Pressure

