Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.14/180604
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- Title
- The Accuracy of central SBP determined from the second systolic peak of the peripheral pressure waveform
- Related
- Journal of hypertension, Vol. 27, Issue 9, (2009), p.1784-1788
- DOI
- 10.1097/HJH.0b013e32832e0b58
- Publisher
- Lippincott Williams & Wilkins
- Date
- 2009
- FoR/RFCD Code(s)
-
110300 Clinical Sciences
- Author/Creator
- Hickson, Stacey S
- Author/Creator
- Butlin, Mark
- Author/Creator
- McEniery, Carmel M
- Author/Creator
- Mir, Fraz A
- Author/Creator
- Graggaber, Johann
- Author/Creator
- Cheriyan, Joseph
- Author/Creator
- Khan, Fakhar
- Author/Creator
- Grace, Andrew A
- Author/Creator
- Lewis, Yasmin
- Author/Creator
- Cockcroft, John R
- Author/Creator
- Wilkinson, Ian B
- Description
- Background: Recent evidence suggests that central aortic blood pressure may be a better predictor of cardiovascular risk than peripheral blood pressure. The central SBP (cSBP) can be estimated from the late systolic shoulder of the radial pulse waveform. We compared the second systolic peak of the radial waveform (pSBP2) with the central systolic pressure derived by a generalized transfer function in a large cohort, across a wide age range, of patients from the Anglo-Cardiff Collaborative Trial. We also compared pSBP2 with the true cSBP measured by cardiac catheterization [invasively measured cSBP (cSBPi)]. Methods: Noninvasive measurements were made by applanation tonometry using the SphygmoCor device. The aortic pressure waveform was derived from the radial waveform using a validated transfer function. Invasive measures of cSBPi were carried out in a group of 38 patients undergoing diagnostic cardiac angiography, and radial artery pressure waveforms were simultaneously recorded using the SphygmoCor device. Results: Overall, there was a strong correlation (r = 0.99, P < 0.001) and good agreement between pSBP2 and the derived cSBP (mean difference ± SD 1 ± 4 mmHg). However, there was a systematic bias with a greater difference between these measures at lower average pressures. There was also a strong correlation and good agreement between the invasively measured cSBPi and pSBP2 (r = 0.92, P < 0.001, mean difference 2 ± 6 mmHg). Conclusion: The second systolic shoulder of the peripheral pressure waveform approximates the cSBP in a large cohort of patients across a wide age range, but this may be inaccurate at low SBP values.
- Description
- 5 page(s)
- Subject Keyword
- 110300 Clinical Sciences
- Subject Keyword
- central SBP
- Subject Keyword
- late systolic shoulder of the radial artery waveform
- Subject Keyword
- SphygmoCor
- Resource Type
- journal article
- Organisation
- Macquarie University. Australian School of Advanced Medicine
- Identifier
- http://hdl.handle.net/1959.14/180604
- Identifier
- ISSN:0263-6352
- Identifier
- mq-rm-2009005226
- Language
- eng
- Reviewed
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