Bundle-Branch Block

Reports outline bundle-branch block research from Hashemite University

Published in Cardiovascular Business Week, February 23rd, 2010

According to a study from Zarqa, Jordan, "Paradoxical splitting occurs when pulmonic valve (P2) closes before the aortic valve (A2). This causes second heart sound (S2) to be a single sound during inspiration and split during exhalation."

"Etiology delay in aortic closure: aortic stenosis, volume overload of left ventricle (LV), conduction defects in LV, and left bundle branch block (LBBB). In this article, a method was proposed in early detection of a reverse in the appearance of A2 and P2 within S2. This method is based on the time-frequency maps obtained with the continuous wavelet transform (CWT), namely, the Meyer wavelet. A number of patients with LBBB and others...

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Source: Cardiovascular Business Week (2010-02-23)

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