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Updated: Jun 2, 2026
08:54
Measuring Blood Pressure in Mice using Volume Pressure Recording, a Tail-cuff Method
Published on: May 15, 2009
[Cuffless blood pressure acquisition system based on a novel calibration method].
Weixuan Fang1, Jiayi Dou, Xiangyang Hu
1Faculty of Science and Technology, University of Macau, Macau, 999078, China. fwxlzy@126.com
Summary
A novel calibration method uses hydrostatic pressure to accurately measure blood pressure by relating it to pulse wave transit time. Clinical tests confirm its accuracy for long and short-term monitoring in diverse populations.
Area of Science:
- Cardiovascular physiology
- Biomedical engineering
- Medical instrumentation
Context:
- Accurate blood pressure monitoring is crucial for diagnosing and managing cardiovascular diseases.
- Existing methods may have limitations in continuous or non-invasive monitoring.
- The Moens-Korteweg model and hydrostatic principles offer theoretical frameworks for understanding pressure dynamics.
Purpose:
- To propose a simple, accurate calibration method for blood pressure measurement.
- To establish a relationship between blood pressure and pulse wave transit time (PWTT).
- To validate the method through clinical testing across various demographics.
Summary:
- A calibration technique adjusts vertical distance between the heart and radial artery to alter hydrostatic pressure.
- This manipulation modifies arterial pressure and PWTT, generating data for blood pressure-PWTT correlation.
- Clinical trials involving diverse age and gender groups were conducted for both short-term and long-term monitoring.
Impact:
- Demonstrates a promising, accurate, and coincident method for blood pressure measurement compared to a standard sphygmomanometer.
- Offers potential for improved non-invasive blood pressure monitoring devices.
- Provides a foundation for further research into continuous cardiovascular parameter assessment.
Related Concept Videos
01:30Equipments Used To Measure Blood Pressure
Direct Method
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...
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...
01:17Measurement of Blood Pressure
Assessing blood pressure is a standard procedure executed in virtually all medical environments. The method utilized today was established over a hundred years ago by an innovative Russian doctor, Dr. Nikolai Korotkoff. The soft ticking noise, known as Korotkoff sounds, heard while taking blood pressure readings results from turbulent blood flow within the vessels. The apparatus required for this procedure includes a sphygmomanometer, a blood pressure cuff attached to a gauge, and a stethoscope.
01:23Assessment of blood pressure in brachial artery(two-step method)
Measuring blood pressure is a fundamental skill in healthcare that aids in diagnosing and monitoring hypertension and other cardiovascular conditions. An aneroid sphygmomanometer, commonly used in clinical settings, offers a manual and precise method for blood pressure measurement. The technique for using this instrument involves specific steps that must be carefully executed to ensure accuracy. The following detailed description outlines a two-step technique for assessing blood pressure using...
01:15Assessment of blood pressure in brachial artery(one-step method)
This procedural guide systematically measures blood pressure using an oscillometric digital sphygmomanometer, emphasizing accuracy, patient safety, and comfort.
Prepare for the Procedure:
Prepare for the Procedure:
01:28Special considerations while measuring blood pressure
When assessing blood pressure (BP), healthcare professionals must consider various factors and potential unexpected outcomes to ensure accurate readings and provide proper patient care. Adhering to these guidelines is essential to achieving the most reliable results.
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.
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.
01:21Sites for measuring blood pressure
Blood pressure measurement is a fundamental clinical procedure, providing crucial data for assessing cardiovascular health. Among the various sites for this measurement, the brachial and popliteal arteries are predominantly utilized due to their accessibility and the reliability of their readings. This lesson delves into the anatomical significance, methodology, and considerations of measuring blood pressure at these locations.
The Brachial Artery: Primary Site for Blood Pressure Measurement
The Brachial Artery: Primary Site for Blood Pressure Measurement