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Peripheral blood pressure measurement is as good as applanation tonometry at predicting ascending aortic blood pressure
- Source :
- Journal of Hypertension. 21:571-576
- Publication Year :
- 2003
- Publisher :
- Ovid Technologies (Wolters Kluwer Health), 2003.
-
Abstract
- The Sphygmocor system purports to be able to assess ascending aortic blood pressure using a transfer function. It has been shown to be accurate when data obtained invasively are used, but has not been tested prospectively using data obtained non-invasively.To investigate the accuracy of this equipment when measurements are obtained non-invasively, as would normally be the case in the clinic setting.The study was observational. Ascending aortic pressure measurements were taken simultaneously with radial artery pressure wave recordings for estimation of ascending aortic blood pressure, in 28 patients undergoing diagnostic cardiac catheterization.The transfer function in the Sphygmocor system significantly underestimated invasively measured systolic blood pressure [mean -7.23 +/- 10.07 mmHg; 95% confidence interval (CI) -3.3 to -11.14 mmHg, P = 0.001] and significantly overestimated invasively measured diastolic blood pressure (mean 12.20 +/- 7.14 mmHg; 95% CI 9.43 to 14.97 mmHg, P0.001). Oscillometrically measured brachial systolic blood pressure was not significantly different from that measured invasively in the ascending aorta (mean 3.36 +/- 10.47 mmHg; 95% CI -0.69 to 7.43 mmHg, P = 0.1), but oscillometric measurement of brachial diastolic blood pressure gave a significant overestimation of that measured invasively (mean 11.70 +/- 7.18 mmHg; 95% CI 8.91 to 14.49 mmHg, P0.001). CONCLUSIONS The transfer function in the Sphygmocor system is no better at estimating ascending aortic blood pressure than are standard peripheral blood pressure measurements. It may be necessary to derive a new transfer system that is based on data that are acquired entirely non-invasively.
- Subjects :
- Male
Applanation tonometry
medicine.medical_specialty
Brachial Artery
Physiology
Blood Pressure
law.invention
law
medicine.artery
Internal medicine
Ascending aorta
Internal Medicine
Humans
Medicine
Radial artery
Aorta
Aged
business.industry
Blood Pressure Determination
Middle Aged
Sphygmomanometers
Peripheral blood
Pulse pressure
Blood pressure
Pressure measurement
Anesthesia
Hypertension
Radial Artery
Cardiology
Female
Cardiology and Cardiovascular Medicine
business
Subjects
Details
- ISSN :
- 02636352
- Volume :
- 21
- Database :
- OpenAIRE
- Journal :
- Journal of Hypertension
- Accession number :
- edsair.doi.dedup.....31b20d346fdecf6c471aa1a00a09cea0