Reliability of palpation of the radial artery compared with auscultation of the brachial artery in measuring SBP.
Summary of "Reliability of palpation of the radial artery compared with auscultation of the brachial artery in measuring SBP."
Systolic blood pressure contributes more to cardiovascular disease than DBP, especially in elderly persons. Palpation of the radial artery to assess SBP - Riva-Rocci's technique - may be an attractive alternative for auscultatory SBP in these patients. Therefore, we investigated the difference between SBP determined by palpation of the radial artery (pSBP) and SBP assessed by auscultation of the brachial artery (aSBP).
Patients were included from the waiting room of a hypertension outpatient clinic. In each patient eight simultaneous pSBP and aSBP measurements were assessed by two observers in the same arm. After every two readings the observers switched between pSBP and aSBP.
Forty patients were included, 25 men (62.5%), mean age 55.3 years (range 24-78). From a total of 320 measurements, mean difference between pSBP and aSBP was -5.2 mmHg (range -12-26 mmHg) (P < 0.01). This difference correlated significantly with BMI (r = 0.51, P < 0.01), but not with age (r = 0.15, P = 0.35), pulse rate (r = 0.29, P = 0.09) or mean SBP (r = 0.03, P = 0.85). After averaging the first three comparisons, reproducibility did not improve when increasing the number of comparisons. When correcting for the underestimation of 6 mmHg over the first three comparisons, Riva-Rocci's technique estimates SBP with an acceptable accuracy.
In clinical practice, Riva-Rocci palpatory technique offers an acceptable alternative for auscultatory SBP measurement. It is recommended to take three measurements and then correct for the average underestimation of 6 mmHg.
Departments of Internal and Vascular Medicine, Academic Medical Center, Amsterdam, The Netherlands.
This article was published in the following journal.
Name: Journal of hypertension
- PubMed Source: http://www.ncbi.nlm.nih.gov/pubmed/20706131
- DOI: http://dx.doi.org/10.1097/HJH.0b013e32833e0ffa
Medical and Biotech [MESH] Definitions
The direct continuation of the brachial trunk, originating at the bifurcation of the brachial artery opposite the neck of the radius. Its branches may be divided into three groups corresponding to the three regions in which the vessel is situated, the forearm, wrist, and hand.
The continuation of the axillary artery; it branches into the radial and ulnar arteries.
The larger of the two terminal branches of the brachial artery, beginning about one centimeter distal to the bend of the elbow. Like the RADIAL ARTERY, its branches may be divided into three groups corresponding to their locations in the forearm, wrist, and hand.
Ankle Brachial Index
Comparison of the BLOOD PRESSURE between the BRACHIAL ARTERY and the POSTERIOR TIBIAL ARTERY. It is a predictor of PERIPHERAL ARTERIAL DISEASE.
A major nerve of the upper extremity. In humans the fibers of the radial nerve originate in the lower cervical and upper thoracic spinal cord (usually C5 to T1), travel via the posterior cord of the brachial plexus, and supply motor innervation to extensor muscles of the arm and cutaneous sensory fibers to extensor regions of the arm and hand.
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