Key result
The Welch Allyn Spot Vital Signs device met AAMI accuracy criteria compared with auscultation, with mean differences of -1.0±4.1 mmHg for systolic and -0.4±6.1 mmHg for diastolic blood pressure.
Why the study?
Does the Welch Allyn Spot Vital Signs device accurately measure blood pressure compared to auscultation in a population including obese and hypertensive patients?
Observational
Blinded observers
Does the Welch Allyn Spot Vital Signs device accurately measure blood pressure compared to auscultation in a population including obese and hypertensive patients?
Mean Difference: -1
The Welch Allyn Spot Vital Signs device provides an accurate and cost-effective alternative for professional blood pressure measurement, including in obese and hypertensive patients.
May support affordable monitoring in obese hypertensives; leaves open outcome trials before routine adoption.
OBJECTIVES: To validate a significantly lower priced, new-generation blood pressure device by using the ANSI/AAMI SP10:2002 Standard evaluation. METHODS: The Spot Vital Signs device evaluation was performed using the procedure specified in the SP10: 2002 American National Standard. Both obese and hypertensive participants were overrepresented in the study population. RESULTS: The mean+/-standard deviation for the device readings compared with auscultation by paired, trained, blinded observers for systolic blood pressure was -1.0+/-4.1 mmHg; for diastolic blood pressure it was -0.4+/-6.1 mmHg. These passed AAMI criteria. The device, at a cost well below those of comparable professional-quality (vs. self measurement) electronic blood pressure devices, was extremely accurate. CONCLUSIONS: The Welch Allyn Spot Vital Signs device provides a cost-effective alternative for medical-care delivery sites where accuracy and cost are both high priorities. The study population was oversampled for obese and hypertensive patients, the major target groups in whom blood pressure must be able to be recorded accurately to optimize diagnosis and management of cardiovascular disease.
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Bruce S. Alpert (2007) conducted an observational in Hypertension and obesity. Welch Allyn Spot Vital Signs blood pressure device vs. Auscultation by paired, trained, blinded observers was evaluated on Difference in systolic and diastolic blood pressure readings compared with auscultation (MD -1.0 mmHg (SBP) and -0.4 mmHg (DBP)). The Welch Allyn Spot Vital Signs device met AAMI accuracy criteria compared with auscultation, with mean differences of -1.0±4.1 mmHg for systolic and -0.4±6.1 mmHg for diastolic blood pressure.