What question did this study set out to answer?

To compare the reliability of three software versions of the SpaceLabs model 90202 ambulatory blood pressure monitor.

November 1, 1992Journal of Hypertension

A plea for consistent reliability in ambulatory blood pressure monitors: a reminder

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Why the study?

Does the software version of the SpaceLabs 90202 ambulatory blood pressure monitor affect the reliability of blood pressure measurements in normotensive persons?

Population

14 normotensive persons

Comparison

SpaceLabs model 90202 ambulatory blood pressure… vs SpaceLabs model 90202 ambulatory blood pressure…

Design

Other

Authors

KHKlavs Würgler HansenAarhus University HRHans rskov

Discussion

Member takes

Implication

Alerts clinicians to software-induced ABPM variability; leaves open standardization needs for reliable research and practice.

Key Points

To compare the reliability of three software versions of the SpaceLabs model 90202 ambulatory blood pressure monitor.
Simultaneous measurements using a two-arm crossover design.
Ten measurements in each of 14 normotensive individuals were conducted for each pair of monitors.
Measurements included systolic, diastolic, and mean arterial blood pressures, and the K factor was calculated.
The K factor for older versions was approximately 0.25 with no significant difference.
The latest ROM version showed a higher K factor due to a 5.4 mmHg increase in mean arterial pressure.
Significant differences in blood pressure readings were noted even among monitors with the same software version.

Structured PICO

Does the software version of the SpaceLabs 90202 ambulatory blood pressure monitor affect the reliability of blood pressure measurements in normotensive persons?

Population

14 normotensive persons

Intervention

SpaceLabs model 90202 ambulatory blood pressure monitor with newer software (ROM version 1.28)

Comparator

SpaceLabs model 90202 ambulatory blood pressure monitor with older software (ROM versions 1.22 and 1.24)

Outcome

Systolic (SBP), diastolic (DBP), mean arterial blood pressure (MAP), and factor K = (MAP - DBP)/(SBP - DBP)surrogate

Unnotified software updates in ambulatory blood pressure monitors can significantly alter mean arterial pressure readings, highlighting the need for consistent device use in clinical trials.

Cite This Study

Hansen et al. (1992) studied this question.

synapsesocial.com/papers/6a705570fe4101aa97e01d76 https://doi.org/10.1097/00004872-199211000-00002

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A plea for consistent reliability in ambulatory blood pressure monitors: a reminder

Discussion

Member takes

Implication

Key Points

Structured PICO

Cite This Study

A plea for consistent reliability in ambulatory blood pressure monitors: a reminder

Discussion

Member takes

Implication

Key Points

Structured PICO

Cite This Study

Also Consider

Also Consider