Blood pressure monitoring
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Blood pressure monitoring · Jun 2012
Comparative StudyEstimating central systolic blood pressure during oscillometric determination of blood pressure: proof of concept and validation by comparison with intra-aortic pressure recording and arterial tonometry.
Central systolic blood pressure is usually estimated by transformation of a peripheral arterial waveform obtained by tonometry and calibrated from conventional measurements of brachial artery blood pressure from a brachial cuff using the oscillometric principle. We investigated whether central blood pressure could be obtained directly from a brachial cuff waveform, allowing the measurement of central blood pressure to be incorporated into the standard oscillometric determination of blood pressure. ⋯ Central systolic blood pressure can be obtained from a brachial cuff waveform with an accuracy comparable to that of a tonometer.
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Blood pressure monitoring · Apr 2012
Validation of A&D TM-2430 upper-arm blood pressure monitor for ambulatory blood pressure monitoring in children and adolescents, according to the British Hypertension Society protocol.
The A&D TM-2430 ambulatory blood pressure (BP) monitor has been validated in adults but not in a young population. We sought to validate the device monitoring in children and adolescents, according to the British Hypertension Society (BHS) protocol. ⋯ The A&D TM-2430 upper-arm BP monitor has fulfilled the required BHS standards and can be recommended for measuring ambulatory BP in children and adolescent populations.
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Blood pressure monitoring · Apr 2012
ReviewOscillometric sphygmomanometers: a critical appraisal of current technology.
Blood pressure (BP), a key vital sign, monitors general health. Oscillometric devices are increasingly used for measurement, although their accuracy continues to be critically debated. A functional block diagram is used to review the components that affect accuracy. ⋯ The indirect nature of BP measurement poses particularly problems for ensuring accuracy. Critical assessment has done much to improve standards, but a solid theoretical understanding of the technique has not been formulated and further work is required.
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Blood pressure monitoring · Apr 2012
Clinical TrialCan electronic sphygmomanometers be used for measurement of blood pressure at high altitudes?
Validated automated oscillometric sphygmomanometers have been recommended by clinical guidelines to replace mercury sphygmomanometers. No studies have been conducted to evaluate whether these validated devices designed for use at normal altitude are also suitable at high altitudes. ⋯ This first explorative study conducted at a high altitude demonstrated that the electronic sphygmomanometer can provide an accurate direct measurement of diastolic BP; however, a simple calibration is required for systolic BP.
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Blood pressure monitoring · Feb 2012
Noninvasive measurement of beat-to-beat arterial blood pressure by the Korotkoff sound delay time.
To propose a novel noninvasive beat-to-beat arterial blood pressure measurement method based on the Korotkoff sound delay time (KDT) and evaluate its accuracy in preliminary experiments. ⋯ The beat-to-beat blood pressure estimated by KDT provides an accurate estimate of MAP in the preliminary experiments and represents a potential acceptable alternative to invasive blood pressure monitoring during laboratory studies.