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Submitted: 21 Sep 2014
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J Cardiovasc Thorac Res. 2014;6(4): 217-221.
doi: 10.15171/jcvtr.2014.015
PMID: 25610552
PMCID: PMC4291599
  Abstract View: 1969
  PDF Download: 754

Original Article

Effect of peripheral edema on cuff-based/ oscillometric blood pressure measurements accuracy

Shamsi Ghaffari 1, Majid Malaki 2*, Afshin Rezaeifar 2, Shahin Abdollahi Fakhim 3

1 Cardiovascular Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
2 Pediatric Health Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
3 Department of Otorhinolaryngology, Tabriz University of Medical Sciences, Tabriz, Iran
*Corresponding Author: Email: madjidmalaki@gmail.com

Abstract

Introduction: Blood pressure( BP )measurement is essential for epidemiological studies and clinical decisions . It seems that tissue characters can effect on BP  resultso and we try to find edema effect on BP measured  by three methods of oscillometric , auscultation and arterial . Method and materials:  Blood pressure of 55 children candidated  for open heart surgery were  measured  and compared with three methods : Arterial as standard and reference  ,oscillometric and auscultatory . Peripheral edema as an tissue character which defined as  higher than +2 as  marked edema and equal or lower than +2  considered as no edema . statistical  method :Data expressed by Mean (95% of confidence interval(CI 95%). Comparison between two group was done by T independent test and ANOVA test for more than two groups. Mann whitney U and paired T test test used for serially comparisons of methods  . P less than 0.05 is significant. Results: 55 children  aged  29.4±3.9 months ,they divided to two groups 10 children with  peripheral edema beyond 2+ and  45 cases without edema. Oscillometric method overestimate systolic BP  the Mean (CI 95%) difference of arterial to oscillomeric was 4.8(8/-1 , p 0.02) in edematous and 4.2(7/1 p 0.004) in non edematous. In diastolic BP oscillometric method underestimate -9(-1.8/-16.5, p0.03) in edematous group and 2.6(-0.7/+5,p 0.2) in non edematous. Conclusion : Oscillometric device standards can not cover all special clinical conditions and age groups .It  underestimate diastolic BP significantly in edematous children,  it was 9.2 mmHg in average as our study.
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Abstract View: 1970

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