Blood pressure monitoring
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Blood pressure monitoring · Jun 2007
Comparative StudyComparison of noninvasive oscillometric and intra-arterial blood pressure measurements in hyperacute stroke.
This study aims to compare automatic oscillometric blood pressure recordings with simultaneous direct intra-arterial blood pressure measurements in hyperacute stroke patients to test the accuracy of oscillometric readings. ⋯ Noninvasive automatic oscillometric BP measurements underestimate direct SBP recordings and overestimate direct DBP readings in acute stroke. The magnitude of the discrepancy between intra-arterial and oscillometric SBP recordings is even more prominent in patients with critically elevated SBP levels.
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Blood pressure monitoring · Apr 2007
Validation of the Oscar 2 oscillometric 24-h ambulatory blood pressure monitor according to the British Hypertension Society protocol.
Accuracy of blood pressure measuring devices is of prime importance and should be validated before devices are used clinically. We carried out an independent evaluation of the Oscar 2 oscillometric ambulatory blood pressure monitor (SunTech Medical, Model 222) according to the British Hypertension Society (BHS) Protocol. ⋯ The Oscar 2 was graded A for both systolic and diastolic blood pressure by the British Hypertension Society protocol and can be recommended for clinical use in an adult population.
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Blood pressure monitoring · Feb 2007
An evaluation of the BD RT2000 reusable transducer system for invasive blood pressure monitoring.
The use of reusable transducers for invasive blood pressure monitoring can lead to cost savings for the hospital and help to reduce waste. ⋯ The static accuracy and zero offset meet the Association for the Advancement of Medical Instrumentation (AAMI) BP22:1994 standard. The zero drift is judged to be acceptable for arterial pressure measurement because a change of 3 mmHg is not clinically significant. The 15% bandwidth is judged to be adequate for fluid-filled pressure monitoring systems. It will be advantageous to couple the disposable dome to the reusable transducer when the disposable dome has a positive pressure.
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Blood pressure monitoring · Oct 2006
The economic impact of the introduction of home blood pressure measurement for the diagnosis and treatment of hypertension.
To investigate the economic consequences resulting from introduction of home blood pressure measurement in diagnosis of hypertension instead of casual clinic blood pressure measurement. ⋯ The introduction of home blood pressure measurement for the diagnosis and treatment of hypertension would be very effective to save costs.
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Blood pressure monitoring · Oct 2006
Extracting oscillometric pulses from the cuff pressure: does it affect the pressures determined by oscillometric blood pressure monitors?
Oscillometric noninvasive blood pressure measurement devices determine the pressures by analysing the relationship between the pressure in an occluding cuff and low-amplitude pressure pulses (oscillometric pulses) induced in the cuff by the arterial pressure wave. This paper examines the effects on the pulses and oscillometric pulse amplitude envelope of the filters that extract the pulses from the cuff pressure. ⋯ The filter alters the shape of oscillometric pulses causing a shift in the oscillometric pulse amplitude envelope drawn from the filtered pulses compared with that drawn from the unfiltered pulses in human subjects, but not the test simulator. The pulse shape distortion is dependent on the filter characteristics and the oscillometric pulse shape. Further work is required to explore whether this may help explain why simulators with artificial waveforms cannot validate noninvasive blood pressure monitors and why noninvasive blood pressure monitors may not be accurate in all patient groups.