What question did this study set out to answer?

To evaluate the accuracy of three ambulatory pressurometers compared to invasive arterial blood pressure measurements.

January 1, 1991Scandinavian Journal of Clinical and Laboratory Investigation

Accuracy of ambulatory blood pressure determination: a comparative study

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Why the study?

Do different ambulatory blood pressure monitors (Diasys 200R, P IV, SpaceLab 90202) differ in accuracy compared to invasive arterial reference measurements?

Key Points

To evaluate the accuracy of three ambulatory pressurometers compared to invasive arterial blood pressure measurements.
Compared Diasys 200R, P IV, and SpaceLab 90202 pressurometers against invasive measurements.
Calculated error on pressure (EOP) for systolic and diastolic blood pressure values.
Used Lehmann analysis to assess error dispersion and statistical classification.
For systolic EOP, Diasys had an accuracy of -0.9 mmHg, PIV -4.3 mmHg, and SpaceLab -16.7 mmHg.
Diastolic EOP showed Diasys at 5.9 mmHg, PIV at 6.8 mmHg, and SpaceLab at 9.1 mmHg.
Correcting for drift in EOP showed no significant accuracy difference among the three pressurometers.

Structured PICO

Do different ambulatory blood pressure monitors (Diasys 200R, P IV, SpaceLab 90202) differ in accuracy compared to invasive arterial reference measurements?

Population

Patients undergoing invasive arterial blood pressure measurement (specific details and sample size not stated in abstract)

Intervention

Non-invasive ambulatory blood pressure measurement using three devices: Diasys 200R (Novacor), P IV (Del Mar Avionics), and SpaceLab 90202 (SpaceLab)

Comparator

Invasive arterial reference measurements

Outcome

Accuracy assessed by calculating the error on pressure (EOP) as the difference between invasive and non-invasive measurement of arterial blood pressuresurrogate

Ambulatory blood pressure monitors using the auscultatory method (recording Korotkoff sounds) showed better accuracy than the oscillometric method when compared to invasive arterial measurements.

Discussion

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Implication

Device accuracy varies substantially versus invasive reference; challenges interchangeability assumptions and leaves open effects on risk stratification.

Cite This Study

Barthélemy et al. (1991) studied this question.

synapsesocial.com/papers/6a21343a2c7e251d79c3d9b2 https://doi.org/10.3109/00365519109091640

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Implication

Device accuracy varies substantially versus invasive reference; challenges interchangeability assumptions and leaves open effects on risk stratification.

Accuracy of ambulatory blood pressure determination: a comparative study

Key Points

Structured PICO

Discussion

Implication

Cite This Study

Accuracy of ambulatory blood pressure determination: a comparative study

Key Points

Structured PICO

Discussion

Implication

Cite This Study

Also Consider

Also Consider