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CORRELATION BETWEEN CENTRAL AND PERIPHERAL ARTERIAL PRESSURES IN PATIENTS WITH STANFORD TYPE B AORTIC DISSECTION UNDERGOING ENDOVASCULAR REPAIR (TEVAR)
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Abstract
Objectives: Peripheral blood pressure (pAP) measured in the brachial artery does not accurately reflect central arterial pressure (cBP) in the aorta. We seek to investigate the correlation between pAP and cBP in patients with Stanford type B aortic dissection undergoing endovascular intervention. Subjects and methods: This is a cross-sectional study conducted in patients diagnosed with Stanford B aortic dissection undergoing endovascular intervention. The non-invasive cAP was measured by an oscillometric device and the invasive cAP was measured during endovascular intervention. Results: A total of 31 patients were recruited into the study, with an average age of 63.6 ± 10.9 years, and 74.2% were male. The proportion of patients diagnosed with hypertension was 83.9%. There was a difference between pBP and non-invasive cBP (128.4 ± 11.8 mmHg and 117.4 ± 11.3 mmHg, p < 0.0001) with an average difference of 11.0 ± 7.0 mmHg between the two methods. SBP and DBP were closely correlated between peripheral and non-invasive central with r of 0.818 and 0.891, respectively. pBP was higher than invasive cBP with an average difference of 5.9 ± 15.7 mmHg (p = 0.04), non-invasive DBP tended to be lower than invasive but not statistically significant (p = 0.63). Peripheral SBP and DBP were correlated with invasive central SBP and DBP with r of 0.397 and 0.774, respectively. Conclusions: In the patients with Stanford type B aortic dissection, pBP measurements were higher than non-invasive and invasive cBP, and there was no significant difference between peripheral and central DBP. Peripheral SBP and DBP values were closely correlated with central, except for the correlation between peripheral BP and non-invasive central BP, which was moderate.
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Keywords
blood pressure, central blood pressure, hypertension, aortic dissection
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