What does this research mean for the field?

The Remler M2000 ambulatory blood pressure recorder provides accurate and reliable measurements comparable to standard sphygmomanometers, whereas the Cardiodyne Sphygmolog suffers from poor reliability and underestimates diastolic blood pressure. Novelty: ClaimNovelty.INCREMENTAL. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

Assess and compare the interdevice variability, measurement accuracy, and real-world operational reliability of the Remler M2000 and Cardiodyne Sphygmolog ambulatory blood pressure recorders.

December 1, 1982HeartOpen Access

Accuracy and reliability of two indirect ambulatory blood pressure recorders: Remler M2000 and Cardiodyne Sphygmolog.

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Why the study?

Are the Remler M2000 and Cardiodyne Sphygmolog ambulatory blood pressure recorders accurate and reliable compared to standard mercury sphygmomanometers?

Population

Patients undergoing ambulatory blood pressure measurement

Comparison

Remler M2000 and Cardiodyne Sphygmolog… vs Mercury standard sphygmomanometers

Design

Other, Multiple recordings made in a random order in each patient

Follow-up

1 day (day recordings)

Authors

DFD J FitzgeraldQ2 Solutions (United Kingdom)WOWilliam G. O’CallaghanSt. Rita's Medical Center RMRobyn J. McQuaidCarleton University

Discussion

Member takes

Implication

May warrant avoiding Sphygmolog for ambulatory BP; leaves open validation of Remler and similar devices in larger cohorts.

Key Points

Assess and compare the interdevice variability, measurement accuracy, and real-world operational reliability of the Remler M2000 and Cardiodyne Sphygmolog ambulatory blood pressure recorders.
Assessed interdevice variability and baseline accuracy against mercury standards (London School of Hygiene and Hawksley random zero sphygmomanometers) in 12 patients using randomized repeat recordings.
Tested simultaneous same-arm blood pressure measurement accuracy against the Hawksley standard in 58 patients for the Remler and 100 patients for the Sphygmolog.
Evaluated ambulatory day-recording reliability across 69 attempted Remler sessions and a direct 13-patient paired reliability comparison between both devices.
Remler demonstrated no interdevice variability and matched Hawksley measurements, whereas one Sphygmolog exhibited a 3 to 4 mmHg transducer zero drift and systematically underestimated diastolic blood pressure.
Remler recordings failed in 5 of 69 attempted day sessions, primarily due to microphone lead defects.
Sphygmolog demonstrated significantly poorer reliability during ambulation, with only 5 of 13 day recordings decodable due to recording disc dislodgement.

Structured PICO

Are the Remler M2000 and Cardiodyne Sphygmolog ambulatory blood pressure recorders accurate and reliable compared to standard mercury sphygmomanometers?

Population

Patients undergoing ambulatory blood pressure measurement (n=12 for interdevice variability, n=58 for Remler vs Hawksley, n=100 for Sphygmolog vs Hawksley, n=13 for reliability comparison)

Intervention

Remler M2000 and Cardiodyne Sphygmolog semiautomatic ambulatory blood pressure recorders

Comparator

Mercury standard sphygmomanometers (London School of Hygiene sphygmomanometer and Hawksley random zero sphygmomanometer)

Outcome

Accuracy (blood pressure measurement comparison) and reliability (proportion of successful/decodable day recordings)surrogate

The Remler M2000 ambulatory blood pressure recorder demonstrates superior accuracy and reliability compared to the Cardiodyne Sphygmolog.

Cite This Study

Fitzgerald et al. (1982) studied this question.

synapsesocial.com/papers/6a1dde5cef3fa0b4c0ef7dc1 https://doi.org/10.1136/hrt.48.6.572

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Accuracy and reliability of two indirect ambulatory blood pressure recorders: Remler M2000 and Cardiodyne Sphygmolog.

Discussion

Member takes

Implication

Key Points

Structured PICO

Cite This Study

Accuracy and reliability of two indirect ambulatory blood pressure recorders: Remler M2000 and Cardiodyne Sphygmolog.

Discussion

Member takes

Implication

Key Points

Structured PICO

Cite This Study

Also Consider

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