Development of Position Changing System for Obstructive Sleep Apnea Patient using HRV

Obstructive sleep apnea in patients, between 70 and 80 percent, can be cured with just a posture correcting. The most import thing to do this is detection of obstructive sleep apnea. Detection of obstructive sleep apnea can be performed through heart rate variability analysis using power spectrum density analysis. After HRV analysis we needed to know the current position information for correcting the position. The pressure sensors of the array type were used to obtain position information. These sensors can obtain information from the experimenter about position. In addition, air cylinder corrected the position of the experimenter by lifting the bed. The experimenter can be changed position without breaking during sleep by the system. Polysomnograph recording were obtained from 10 patients. The results of HRV analysis were that NLF and LF/HF ratio increased, while NHF decreased during OSA. Position change had to be done the periods.

Authors:

• Soo- Young Ye
• Dong-Hyun Kim

Keywords:

• Obstructive sleep apnea
• Heart rate variability
• Air cylinder
• PSD
• RR interval
• ANS

References:

[1] Khandoker, A.H., Gubbi, J., Palaniswami, M., "Automated Scoring of
Obstructive Sleep Apnea and Hypopnea Events Using Short-Term
Electrocardiogram Recordings", IEEE Transactions on Information
Technology in Biomedicine, ol. 13, pp.1057-1067, 2009.
[2] Parikh SN, Stuchin SA, Maca C, "Sleep apnea syndrome in patients
undergoing total joint arthroplasty", J Arthroplasty, vol.17, pp.635-642,
2002.
[3] Peppard PE, Young T, Palta M, "Longitudinal study of moderate weight
change and sleep-disordered breathing", JAMA, vol.284, pp. 3015-3021,
2000.
[4] Clete A. Kushida, MD, et al, Michael R. Littner, "Practice Parameters for
the Use of Continuous and Bilevel Positive Airway Pressure Devices to
Treat Adult Patients With Sleep-Related Breathing Disorders", Sleep,
vol.29, No.3, pp. 375-380 ,2006.
[5] Seiko M., Akiko N., Kumiko H. et al, "Follow-up for patients with
obstructive sleep apena syndrome using a portable recording device",
Nagoya J. Med. Sci., vol. 69, pp. 37-43, 2007.
[6] Amanda C. Peltier, Flavia B. Consens, Flavia B. Consens, Lily Wang,
Yanna Song, James W. "Russell, Autonomic dysfunction in obstructive
sleep apnea is associated with impaired glucose regulation", Sleep
Medicine, vol. 8, pp.149-155, 2007.
[7] Bailon, R., Laouini, G., Grao, C., Orini, M., Laguna, P., Meste, O.," The
Integral Pulse Frequency Modulation Model With Time-Varying
Threshold: Application to Heart Rate Variability Analysis During
Exercise Stress Testing ", Biomedical Engineering, IEEE Transactions
on , vol.58, Issue 3, Part 1, pp.642-652,2011.
[8] Mateo, J., Laguna, P., "Improved heart rate variability signal analysis
from the beat occurrence times according to the IPFM model", IEEE
Transcations on Biomedical Engineering, vol. 47, pp. 985-996, 2000.
[9] Christian G., Dalva P., Agostinho R., Yu-Shu H., "Heart rate variability,
sympathetic and vagal balance and EEG arousals in upper airway
resistance and mild obstructive sleep apnea syndromes", Sleep Medicine,
vol. 6, pp. 451-457, 2005.