Assessment of Pulsed Magnetic Field Stimulus by Using Finger Photoplethysmogram and Pressure Pulse Waveform

作者：Lee Jinyong; Go Insuk; Choi Jaewon; Jang Taesun; Shin Sang Hoon; Lee Hyun Sook; Hwang Do Guwn; Kim Sunwook^*

来源：Journal of Magnetics, 2010, 15(4): 209-212.

DOI：10.4283/JMAG.2010.15.4.209

• pulsed magnetic field stimulation
• photoplethysmogram
• pressure pulse waveform
• the second derivative
• augmentation index
• aging index

Photoplethysmogram (PPG) and pressure pulse waveform (PPW) were compared and evaluated for the efficacy of stimulating knuckles by using the pulsed magnetic field. Both signals were observed simultaneously while the knuckles were exposed for 10 min to the pulsed magnetic field, with maximum field intensity of 0.8 T and transition time of 0.126 msec. After 5 min stimulation of the knuckles, the results showed that the aging indexes calculated from the second derivative of the PPG were increased from -1.913 to 0.072, and that of the PPW from -0.063 to 0.387. However, for the relatively long-term stimulation for 10 min, we found that the values of both the aging indexes of the second derivatives and augmentation index of the PPW returned to the starting level. The changes observed in characteristic factors such as the aging indexes of the second derivatives and augmentation index of the PPW indicate the potential of pulsed magnetic field stimulation as a therapeutic method for the treatment of patients with peripheral vascular disease.

• 出版日期2010-12