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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Popov, B. Sierra, G. Durand, L.-G. Xu, J. Pibarot, P. Agarwal, R. Lanzo, V. |
| Copyright Year | 2004 |
| Description | Author affiliation: Andromed Inc., Quebec City, Que., Canada (Popov, B.; Sierra, G.) |
| Abstract | The second heart sound, S2, is generally believed to be comprised of aortic (A2) and pulmonary (P2) components. Previously, the normalized splitting interval (NSI) between the A2 and P2 components has been shown to be proportional to the pulmonary artery pressure (PAP). A set of fully automated algorithms based on adaptive modeling of A2/P2 components using chirplets were developed to provide real-time estimates of PAP. The method was tested on 16 pigs which were administered drugs to induce pulmonary hypertension. Simultaneous reference pressure measurements were obtained with a pulmonary artery catheter (PAC). Estimation of PAP in pigs using the new techniques resulted in a correlation coefficient (r) of 0.84 and standard error (SEE) of 9.2 mm Hg. This is in line with echocardiography studies, which have a performance ranging from r=0.69-0.91 and SEE from 5 to 12 mm Hg when compared to PAC measurements. It is also consistent with previous results based on a manual estimation of PAP derived through image processing methods. Based on these findings, this method has the potential to offer continuous noninvasive monitoring of PAP. |
| Starting Page | 921 |
| Ending Page | 924 |
| File Size | 122401 |
| Page Count | 4 |
| File Format | |
| ISBN | 0780384393 |
| DOI | 10.1109/IEMBS.2004.1403310 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2004-09-01 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Heart Arteries Mercury (metals) Chirp Testing Drugs Hypertension Pressure measurement Catheters Measurement standards pulmonary hypertension chirplets heart sounds phonocardiography |
| Content Type | Text |
| Resource Type | Article |
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