We proposed a method to monitor the peripheral arterial mechanical states using biological signals including electrocardiogram, arterial pressure, and photo-prethemogram. A log-linearized peripheral vascular viscoelastic model is developed to describe the nonlinear viscoelastic relationship between the blood pressure and the photo-plethysmograph signal. The proposed indicator can estimate the change in stiffness of the peripheral arterial wall induced by sympathetic nerve activity, and can be applied to monitoring the peripheral arterial state during chest sympathectomy surgery.
Log-linearized Peripheral Arterial Viscoelastic Model
1.A Log-linearized Peripheral Arterial Viscoelastic Index and Its Application to Endoscopic Thoracic Sympathectomy (in Japanese), Hiroki Hirano, Tetsuya Horiuchi, Haruotyo Hirano, Yuichi Kurita, Teiji Ukawa, Ryuji Nakamura, Noboru Saeki, Masao Yoshizumi, Masashi Kawamoto, and Toshio Tsuji, Transactions of the Society of Instrument and Control Engineers, Vol. 48, No. 11, pp. 731-739, 2012.
2.A Log-Linearized Arterial Viscoelastic Index and Its Application to Carotid Ultrasonography (in Japanese), Tetsuya Horiuchi, Abdugheni Kutluk, Harutoyo Hirano, Yuichi Kurita, Toshio Tsuji, Teuji Ukawa, Ryuji Nakamura, Noboru Saeki, Yukihito Higashi, Masashi Kawamoto, and Masao Yoshizumi, Transactions of the Society of Instrument and Control Engineers, Vol. 48，No. 9，pp. 563-570，2012.