What does this research mean for the field?

Measurement errors in oscillometric blood pressure monitors are highly dependent on patient characteristics such as age, sex, and blood pressure, whereas errors in microphonic monitors are largely independent of these factors. Novelty: ClaimNovelty.INCREMENTAL. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

The aim was to explore how patient characteristics affect the accuracy of two types of blood pressure monitors.

October 1, 1993HypertensionOpen Access

Bias and variability in blood pressure measurement with ambulatory recorders.

Q: What is the clinical evidence from this study?

Study design: Cross-Sectional. Intervention: Oscillometric (SpaceLabs 90207) and microphonic (TM2420) ambulatory blood pressure monitors vs. Random-zero sphygmomanometry by trained observers. Primary outcome: Measurement error (difference between monitor and trained observers' readings).

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Key result

Oscillometric blood pressure monitors had measurement errors highly dependent on patient characteristics (accounting for 36.6% of systolic variation), unlike microphonic monitors (1.2%).

Why the study?

Do patient characteristics affect the accuracy of oscillometric and microphonic ambulatory blood pressure monitors compared to random-zero sphygmomanometry?

Population

118 subjects

Comparison

Blood pressure measurement using oscillometric… vs Simultaneous readings by two pairs of trained…

Design

Cross-sectional, blinded observers

Authors

GPGiuseppe PannaraleSapienza University of Rome GBGwyn BebbAmgen (United States)SCSusan J. ClarkUniversity of Sheffield

Discussion

Member takes

Implication

May compromise oscillometric monitor reliability in select patients; leaves open whether microphonic devices warrant preference in validation studies.

Key Points

The aim was to explore how patient characteristics affect the accuracy of two types of blood pressure monitors.
Compared records from two oscillometric and two microphonic monitors with readings from trained observers using random-zero sphygmomanometry.
Evaluated 118 subjects aged 17 to 94 with various blood pressure levels.
Assessed correlations between measurement errors and patient characteristics using multiple regression.
The oscillometric monitor showed an average systolic error of 2.8 mm Hg and diastolic error of 3.9 mm Hg.
For oscillometric measurements, patient characteristics accounted for 36.6% of systolic error variation and 34.7% of diastolic error variation.
The microphonic monitor had minimal correlation with patient characteristics, accounting for only 1.2% of systolic error.

Study Design

Type

Cross-Sectional (n=118)

Blinding

Blinded observers

Structured PICO

Do patient characteristics affect the accuracy of oscillometric and microphonic ambulatory blood pressure monitors compared to random-zero sphygmomanometry?

Population

118 subjects (53 men and 65 women, aged 17 to 94 years; systolic pressure, 89 to 211 mm Hg; diastolic, 44 to 116 mm Hg)

Intervention

Blood pressure measurement using oscillometric (SpaceLabs 90207) and microphonic (TM2420 version 7) ambulatory monitors

Comparator

Simultaneous readings by two pairs of trained, blinded observers using random-zero sphygmomanometry

Outcome

Measurement error (difference between monitor and trained observers' readings) and its correlation with patient characteristicssurrogate

Oscillometric ambulatory blood pressure monitors are significantly more susceptible to measurement errors driven by patient characteristics such as age and pulse pressure compared to microphonic monitors.

Cite This Study

Pannarale et al. (1993) reported a cross-sectional. Oscillometric (SpaceLabs 90207) and microphonic (TM2420) ambulatory blood pressure monitors vs. Random-zero sphygmomanometry by trained observers was evaluated on Measurement error (difference between monitor and trained observers' readings). Oscillometric blood pressure monitors had measurement errors highly dependent on patient characteristics (accounting for 36.6% of systolic variation), unlike microphonic monitors (1.2%).

synapsesocial.com/papers/6a157f71814bf8ec9a4eacbe https://doi.org/10.1161/01.hyp.22.4.591

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October 1, 1993HypertensionOpen Access

Bias and variability in blood pressure measurement with ambulatory recorders.

View Full Paper

Ask AI

Bookmark

Key result

Oscillometric blood pressure monitors had measurement errors highly dependent on patient characteristics (accounting for 36.6% of systolic variation), unlike microphonic monitors (1.2%).

Why the study?

Do patient characteristics affect the accuracy of oscillometric and microphonic ambulatory blood pressure monitors compared to random-zero sphygmomanometry?

Population

118 subjects

Comparison

Blood pressure measurement using oscillometric… vs Simultaneous readings by two pairs of trained…

Design

Cross-sectional, blinded observers

Authors

GPGiuseppe PannaraleSapienza University of Rome GBGwyn BebbAmgen (United States)SCSusan J. ClarkUniversity of Sheffield

Discussion

Member takes

Implication

May compromise oscillometric monitor reliability in select patients; leaves open whether microphonic devices warrant preference in validation studies.

Key Points

The aim was to explore how patient characteristics affect the accuracy of two types of blood pressure monitors.
Compared records from two oscillometric and two microphonic monitors with readings from trained observers using random-zero sphygmomanometry.
Evaluated 118 subjects aged 17 to 94 with various blood pressure levels.
Assessed correlations between measurement errors and patient characteristics using multiple regression.
The oscillometric monitor showed an average systolic error of 2.8 mm Hg and diastolic error of 3.9 mm Hg.
For oscillometric measurements, patient characteristics accounted for 36.6% of systolic error variation and 34.7% of diastolic error variation.
The microphonic monitor had minimal correlation with patient characteristics, accounting for only 1.2% of systolic error.

Study Design

Type

Cross-Sectional (n=118)

Blinding

Blinded observers

Structured PICO

Do patient characteristics affect the accuracy of oscillometric and microphonic ambulatory blood pressure monitors compared to random-zero sphygmomanometry?

Population

118 subjects (53 men and 65 women, aged 17 to 94 years; systolic pressure, 89 to 211 mm Hg; diastolic, 44 to 116 mm Hg)

Intervention

Blood pressure measurement using oscillometric (SpaceLabs 90207) and microphonic (TM2420 version 7) ambulatory monitors

Comparator

Simultaneous readings by two pairs of trained, blinded observers using random-zero sphygmomanometry

Outcome

Measurement error (difference between monitor and trained observers' readings) and its correlation with patient characteristicssurrogate

Cite This Study

synapsesocial.com/papers/6a157f71814bf8ec9a4eacbe https://doi.org/10.1161/01.hyp.22.4.591

Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

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