What question did this study set out to answer?

To evaluate the accuracy of aneroid and mercury sphygmomanometers in routine hospital use against a serviced mercury reference standard during dynamic calibration.

December 1, 2002Blood Pressure Monitoring

Hidden errors of aneroid sphygmomanometers

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Why the study?

Are aneroid sphygmomanometers as accurate as mercury sphygmomanometers during dynamic calibration?

Population

39 aneroid and 36 mercury sphygmomanometers in current clinical use within a tertiary referral maternity…

Comparison

Aneroid sphygmomanometers vs Mercury sphygmomanometers

Design

Cross-sectional, three blinded, trained observers

Authors

JWJason WaughRoyal Adelaide Hospital MGManesh GuptaSt Thomas' Hospital JRJulie Ivory RushbrookSUNY Downstate Health Sciences University

Discussion

Member takes

Implication

Aneroid devices may warrant enhanced calibration checks; Level 4 data leaves open effects on hypertension diagnosis or management.

Key Points

To evaluate the accuracy of aneroid and mercury sphygmomanometers in routine hospital use against a serviced mercury reference standard during dynamic calibration.
Assessed 39 aneroid and 36 mercury sphygmomanometers in active clinical use at a tertiary referral maternity hospital.
Tested 30 pressure levels across the operating range using three blinded, trained observers adhering to British Hypertension Society validation guidelines.
Only 36 of 39 aneroid devices (92%) and 31 of 36 mercury devices (86%) were in adequate mechanical condition for dynamic analysis.
Aneroid devices showed significantly more systematic errors exceeding 5 mmHg compared to mercury devices (19% vs. 3%, p < 0.05).
Fifty percent (50%) of aneroid devices recorded at least one error greater than 10 mmHg, compared to 10% of mercury devices.

Structured PICO

Are aneroid sphygmomanometers as accurate as mercury sphygmomanometers during dynamic calibration?

Population

39 aneroid and 36 mercury sphygmomanometers in current clinical use within a tertiary referral maternity hospital

Intervention

Aneroid sphygmomanometers

Comparator

Mercury sphygmomanometers (compared to a recently calibrated and serviced mercury sphygmomanometer as the gold standard)

Outcome

Accuracy during dynamic calibration across 30 different pressuressurrogate

Aneroid sphygmomanometers in clinical use are frequently inaccurate compared to mercury devices, highlighting the need for regular dynamic calibration.

Cite This Study

Waugh et al. (2002) studied this question.

synapsesocial.com/papers/6a71fec7ac440176ef2a75db https://doi.org/10.1097/00126097-200212000-00003

Topics

Hypertension management

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Hidden errors of aneroid sphygmomanometers

Discussion

Member takes

Implication

Key Points

Structured PICO

Cite This Study

Topics

Hidden errors of aneroid sphygmomanometers

Discussion

Member takes

Implication

Key Points

Structured PICO

Cite This Study

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Topics

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