Home sphygmomanometers: validation versus accuracy.

Area of Science:

• Cardiovascular Medicine
• Biomedical Engineering
• Public Health

Background:

• Accuracy and validation of home sphygmomanometers are critical for both clinical practice and the consumer market.
• A significant number of home blood pressure devices may not meet accuracy standards, potentially leading to misdiagnosis or inadequate treatment.

Purpose of the Study:

• To determine the prevalence of validated home sphygmomanometers available to consumers.
• To investigate the correlation between the validation status and the accuracy of these devices.

Main Methods:

• 896 home sphygmomanometers were collected from individuals at a hypertension clinic.
• 870 devices were suitable for analysis; validation status was checked against the dabl Educational Trust website.
• Accuracy was assessed in 554 automated sphygmomanometers, comparing validated and non-validated devices.

Main Results:

• Only 30% (22 of 74) of the evaluated devices were validated.
• A high rate of inaccuracy was found, with 72% (400 of 554) of automated sphygmomanometers being inaccurate.
• Validated devices demonstrated a significantly higher accuracy rate (68%) compared to non-validated devices (15%) (P<0.01).

Conclusions:

• Validated home sphygmomanometers are more likely to be accurate than non-validated devices.
• This study provides the first evidence linking the validation status to the accuracy of home blood pressure monitors.
• Improving patient education and market supervision, potentially with non-profit organization support, can reduce device-related errors in blood pressure monitoring.