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Here is a video on the use of CASP by the BBC

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Here is a video on the use of CASP by the BBC

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BBC reports on CASPro's unique and non-invasive approach to measuring Central Aortic Systolic Pressure (CASP). Prof Bryan Williams from the University of Leicester, explains how the medical device accurately determines central pressure using a patient's pulse wave and upper arm blood pressure.

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This is not a widely accepted way to measure BP, mostly because it has previously been a difficult measure to obtain in patients. There needs to be more research in the area of comparing traditional BP measurements to CASP measurements. In addition there needs to be research on what is considered normal central aortic pressures and how do they affect clinical outcomes.

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This technology may change the way we measure blood pressure. It is thought that in measuring the CASP we may be able to better prevent stokes and heart attacks. The BP measurement taken by an arm cuff is a result of a wave amplification from blood leaving the heart.This measurement (cuff BP) varies depending on medication, disease of the blood vessels and age.  It may be different than the actual pressure leaving the heart (CASP), especially in younger patients.
It is non-invasive. The traditional way to measure CASP has been to insert a catheter into the patients' heart, via the femoral or brachial arteries to obtain arterial pressures.
It is available for use now and has been approved by the FDA.

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The patient wears the blood pressure cuff and the wrist strap. The wrist strap has a sensor that records the arterial pulse wave. The radial pulse wave is similar to what one feels when palpating a pulse.  The cuff BP and the radial pulse wave is taken at the same time. The machine uses a mathematical equation that takes into account the pulse wave and the cuff BP.  It then come up with the central aortic pressure.

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This new technology is a joint venture between HealthSTATS (Medical device compant), The University of Leicester, and the Department of Health's National Institute for Health Research (NIHR). This device measures the central aortic blood pressure (CASP), that is the pressure closest to the heart. It is the pressure that is calculated as blood leaves the aorta. This is a significant measurement because this pressure is what the brain, the heart and other major organs see as the blood pressure in the body. 

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This new technology is a joint venture between HealthSTATS (Medical device compant), The University of Leicester, and the Department of Health's National Institute for Health Research (NIHR). This device measures the central aortic blood pressure (CASP), that is the pressure closest to the heart. It is the pressure that is calculated as blood leaves the aorta. This is a significant measurement because this pressure is what the brain, the heart and other major organs see as the blood pressure in the body. 

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References
http://www2.le.ac.uk/offices/press/press-releases/2011/february/ground-breaking-technology-will-revolutionise-blood-pressure-measurement-for-first-time-for-over-a-century

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CASPal equipment, include a BP cuff and the wrist monitor to measure the atrial pulse wave. 

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CASPal equipment, include a BP cuff and the wrist monitor to measure the atrial pulse wave. 