Monitoring Cardiac Stress Using Features Extracted From S-1 Heart Sounds

作者：Herzig Jonathan^*; Bickel Amitai; Eitan Arie; Intrator Nathan

来源：IEEE Transactions on Biomedical Engineering, 2015, 62(4): 1169-1178.

DOI：10.1109/TBME.2014.2377695

• Biomedical signal processing
• cardiology
• laparoscopy
• morphological features
• phonocardiography

It is known that acoustic heart sounds carry significant information about the mechanical activity of the heart. In this paper, we present a novel type of cardiac monitoring based on heart sound analysis. Specifically, we study two morphological features and their associations with physiological changes from the baseline state. The framework is demonstrated on recordings during laparoscopic surgeries of 15 patients. Insufflation, which is performed during laparoscopic surgery, provides a controlled, externally induced cardiac stress, enabling an analysis of each patient with respect to their own baseline. We demonstrate that the proposed features change during cardiac stress, and the change is more significant for patients with cardiac problems. Furthermore, we show that other well-known ECG morphology features are less sensitive in this specific cardiac stress experiment.

• 出版日期2015-4