Abstract
had severe PH (PAM ≥50 mm Hg). All patients had a sinus or paced atrial rhythm. There was a significant correlation coefficient between S2 intensity at the pulmonic area (left upper sternal border) and the PASP (r = 0.34; P = .0097). The correlation between PASP and S4 intensity at the left sternal border was significant (r = 0.37; P = .030). S3 intensity measured from the left sternal border was more weakly associated with PASP (r = 0.28; P = .037). The magnitude or variance of S2 splitting was not associated with PH. Conclusions: Computerized assessment of the S2, S3, and S4 intensities over the right ventricle correlates with invasive measurements of PASP. Further refinement of acoustic cardiography may serve as a noninvasive tool to assess the severity of PH.
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