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Ghaffari S, Malaki M, Rezaeifar A, et al. Effect of peripheral edema on oscillometric blood pressure measurement. J Cardiovasc Thorac Res. 2014;6(4):217-21doi: 10.15171/jcvtr.2014.015.
Ghaffari, S., Malaki, M., Rezaeifar, A., & Abdollahi Fakhim, S. (2014). Effect of peripheral edema on oscillometric blood pressure measurement. Journal of cardiovascular and thoracic research, 6(4), 217-21. https://doi.org/10.15171/jcvtr.2014.015
Ghaffari, Shamsi, et al. "Effect of peripheral edema on oscillometric blood pressure measurement." Journal of cardiovascular and thoracic research vol. 6,4 (2014): 217-21. doi: https://doi.org/10.15171/jcvtr.2014.015
Ghaffari S, Malaki M, Rezaeifar A, Abdollahi Fakhim S. Effect of peripheral edema on oscillometric blood pressure measurement. J Cardiovasc Thorac Res. 2014;6(4):217-21. doi: 10.15171/jcvtr.2014.015. Epub 2014 Dec 30. PMID: 25610552; PMCID: PMC4291599.
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J Cardiovasc Thorac Res. 2014;6(4):217-21. doi: 10.15171/jcvtr.2014.015. Epub 2014 Dec 30.

Effect of peripheral edema on oscillometric blood pressure measurement.

Journal of cardiovascular and thoracic research

Shamsi Ghaffari, Majid Malaki, Afshin Rezaeifar, Shahin Abdollahi Fakhim

Affiliations

  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.

PMID: 25610552 PMCID: PMC4291599 DOI: 10.15171/jcvtr.2014.015

Abstract

INTRODUCTION: Blood pressure (BP) measurement is essential for epidemiological studies and clinical decisions. It seems that tissue characteristics can affect BP results and we try to find edema effect on BP results taken by different methods.

METHODS: BP of 55 children before open heart surgery were measured and compared according to three methods: Arterial as standard and reference, oscillometric and auscultatory methods. Peripheral edema as a tissue characteristic was defined in higher than +2 as marked edema and in equal or lower than +2 as no edema.

STATISTICAL ANALYSES: data was expressed as Mean and 95% of confidence interval (CI 95%). Comparison of two groups was performed by T independent test and of more than two groups by ANOVA test. Mann-Whitney U and paired T-test were used for serially comparisons of changes. P less than 0.05 was considered significant.

RESULTS: Fifty five children aged 29.4±3.9 months were divided into two groups: 10 children with peripheral edema beyond +2 and 45 cases without edema. Oscillometric method overestimated systolic BP and the Mean (CI 95%) difference of oscillometric to arterial was 4.8 (8/-1, P=0.02) in edematous and 4.2 (7/1, p=0.004) in non edematous. Oscillometric method underestimated diastolic BP as -9 (-1.8/-16.5, P=0.03) in edematous group and 2.6 (-0.7/+5, P= 0.2) in non edematous compared to arterial method.

CONCLUSION: Oscillometric device standards cannot cover all specific clinical conditions. It underestimates diastolic BP significantly in edematous children, which was 9.2 mmHg in average beyond the acceptable standards.

Keywords: Auscultatory; Blood Pressure; Edema; Oscillometric

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