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Interarm differences in blood pressure should be determined by measuring both arms simultaneously with an automatic oscillometric device.
MedLine Citation:
PMID:  21284132     Owner:  NLM     Status:  In-Process    
Abstract/OtherAbstract:
OBJECTIVE: To compare two methods for screening interarm difference (IAD) of blood pressure.
MATERIAL AND METHODS: This study compared two methods for double-arm measurements: (i) conventional measurement (CM) and (ii) simultaneous automatic measurement (SAM). A total of 118 patients with two or more cardiovascular risk factors and a mean age of 59±17 years were referred to two internal clinics. CM was taken with a validated aneroid manometer in sitting position on the right and left arm subsequently and vice versa. SAM was taken three times in sitting position using a validated automatic oscillometric device equipped with two cuffs for simultaneous double-arm measurements.
RESULTS: The average absolute IAD of the conventional systolic value (4.9 mmHg) was significantly higher than the average absolute IAD of the SAM pressures averaged from two (3.7 mmHg; P<0.03) and three measurements (3.8 mmHg; P<0.05). The standard deviations of IADs were significantly higher (P<0.05) for the conventional systolic and diastolic measurements (4.1/3.1 mmHg) than for SAM averaged from two and three (3.0/2.3 and 3.2/2.6 mmHg, respectively) measurements. Differences of more than 20 mmHg for systolic pressure and/or 10 mmHg for diastolic pressures averaged from two CMs, two SAMs, and three SAMs were seen in 10 (9%), four (3%), and six (5%) patients, respectively.
CONCLUSION: SAM provides smaller and more reproducible IADs than CM and therefore, most likely better estimates a patient's true IAD.
Authors:
Friedrich W Lohmann; Siegfried Eckert; Willem J Verberk
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Blood pressure monitoring     Volume:  16     ISSN:  1473-5725     ISO Abbreviation:  Blood Press Monit     Publication Date:  2011 Feb 
Date Detail:
Created Date:  2011-01-31     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9606438     Medline TA:  Blood Press Monit     Country:  England    
Other Details:
Languages:  eng     Pagination:  37-42     Citation Subset:  IM    
Affiliation:
Departments of Internal Medicine, Charité University Medicine and Vivantes Klinikum Neukölln Hospital, Berlin, Germany.
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