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Published on: May 3, 2018
Blood pressure cuff comparability study
Yechiam Ostchega1, Tatiana Nwankwo, Guangyu Zhang
1aOperations Branch, NHANES Program bDivison of Research and Methodology, NCHS, CDC cHarris Corporation, Hyattsville, Maryland, USA.
Background:
Manufacturer-supplied blood pressure (BP) cuffs are part of the automatic oscillometric BP devices algorithm.
Materials And Methods:
This study assessed the differences in BP values using the Omron HEM 907-XL (Omron) device with two types of cuffs: the Baum cuff (BC) and the supplied Omron cuff (OC). A sample of 102 adults participated in the study, 34 per cuff size (adult, large, and extra-large). After a 5-min resting period, three pairs of BP determinations (systolic and diastolic) were taken simultaneously on both arms. One arm was cuffed with a BC and the other arm was cuffed with an OC. The cuffs were switched to opposite arms after 5 min of rest. The order was decided randomly as to which cuff was applied to which arm first.
Results:
The BP readings were highly correlated between the cuffs (systolic BP, r=0.98; diastolic BP, r=0.98). The overall mean differences (BC-OC) were 2.66 mmHg (SD=3.9 mmHg) for systolic BP (P<0.05) and 0.33 mmHg (SD=2.03 mmHg) for diastolic BP (P>0.05). Increased cuff size corresponded to increased differences in systolic BP values (adult: 1.51 mmHg; large: 2.56 mmHg; and extra-large: 3.9 mmHg; P<0.05). For diastolic BP values, a statistically significant difference was observed only for adult cuff size (difference=1.31 mmHg, SD=1.34 mmHg, P<0.05).
Conclusion:
Using a BC with the Omron could result in higher systolic BP readings and higher diastolic BP readings with the adult cuff size.
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