Comparison between cuff-based and invasive systolic blood pressure amplification.
J Hypertens
; 40(10): 2037-2044, 2022 10 01.
Article
in En
| MEDLINE
| ID: mdl-36052526
ABSTRACT
OBJECTIVE:
Accurate measurement of central blood pressure (BP) using upper arm cuff-based methods is associated with several factors, including determining the level of systolic BP (SBP) amplification. This study aimed to determine the agreement between cuff-based and invasively measured SBP amplification.METHODS:
Patients undergoing coronary angiography had invasive SBP amplification (brachial SBP - central SBP) measured simultaneously with cuff-based SBP amplification using a commercially available central BP device (device 1 Sphygmocor Xcel; nâ=â171, 70% men, 60â±â10âyears) and a now superseded model of a central BP device (device 2 Uscom BP+; nâ=â52, 83% men, 62â±â10âyears).RESULTS:
Mean difference (±2SD, limits of agreement) between cuff-based and invasive SBP amplification was 4âmmHg (-12, +20âmmHg, Pâ<â0.001) for device 1 and -2âmmHg (-14, +10âmmHg, Pâ=â0.10) for device 2. Both devices systematically overestimated SBP amplification at lower levels and underestimated at higher levels of invasive SBP amplification, but with stronger bias for device 1 (râ=â-0.68 vs. râ=â-0.52; Zâ=â2.72; Pâ=â0.008). Concordance of cuff-based and invasive SBP amplification across quartiles of invasive SBP amplification was low, particularly in the lowest and highest quartiles. The root mean square errors from regression between cuff-based central SBP and brachial SBP were significantly lower (indicating less variability) than from invasive regression models (Pâ<â0.001).CONCLUSIONS:
Irrespective of the difference from invasive measurements, cuff-based estimates of SBP amplification showed evidence of proportional systematic bias and had less individual variability. These observations could provide insights on how to improve the performance of cuff-based central BP.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Blood Pressure Determination
/
Arterial Pressure
Type of study:
Prognostic_studies
Limits:
Female
/
Humans
/
Male
Language:
En
Journal:
J Hypertens
Year:
2022
Document type:
Article
Affiliation country: