• Title/Summary/Keyword: Polysomnography

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Digital Polysomnography:The Present and Future (디지털 수면다원기록법:현재와 미래)

  • Shin, Hong-Beom;Jeong, Do-Un
    • Sleep Medicine and Psychophysiology
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    • v.11 no.2
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    • pp.73-79
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    • 2004
  • Digital polysomnography was developed to overcome the limitations of Rechtschaffen and Kales rule and to compensate the shortcomings of paper polysomnography. It enables easy access to and secure preservation of sleep records, and provides various displays of sleep data to enhance efficiency of visual scoring of sleep records. Rechtschaffen and Kales rule had been criticized for its ambiguity and lack of considerations in spatial information of EEG. As sleep records are acquired and processed in digital mode, they can be analyzed at microscopic and macroscopic levels. Digital analysis of sleep records provides the basis for development of new sleep measures. Sleep staging in digital polysomnography is based on the various analyses of EEG. Sleep apnea, hypopnea and periodic limb movement are detected automatically by digital analysis of respiratory signals and leg EMG. Digital polysomnography plays a complementary role to visual scoring and compensates the limitations of paper polysomnography. Digital polysomnography, including acquisition, processing and analysis of sleep records in digital mode, can be a great help in the development of sleep medicine, enabling the development of new sleep measures and the exchange of sleep records between sleep laboratories.

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Polysomnography and Multiple Sleep Latency Test (수면검사다원검사와 수면잠복기반복검사)

  • Cho, Jae Wook
    • Annals of Clinical Neurophysiology
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    • v.14 no.1
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    • pp.7-11
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    • 2012
  • Polysomnography is used to diagnose many types of sleep disorders including sleep apnea, periodic limb movement disorder, REM sleep behavior disorder, parasomnias, and narcolepsy. It is a comprehensive recording of the biophysiological changes that occur during sleep. The polysomnography monitors many body functions parameters including EEG, EOG, EMG, ECG, respiratory airflow, respiratory effort, and pulse oximetry during sleep. Multiple Sleep Latency Test (MSLT) is performed for diagnosing narcolepsy and excessive daytime sleepiness. It is usually to be done after an overnight polysomnography. The test consists of four or five 20-minute nap opportunities that are scheduled two hours apart.

UWB Radar and Non-contact Polysomnography (UWB 레이더와 비접촉 수면다원검사)

  • Byun, Sang-Seon
    • IEMEK Journal of Embedded Systems and Applications
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    • v.10 no.1
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    • pp.33-40
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    • 2015
  • The number of people who are suffering from chronic sleep disorder has been growing dramatically in modern era. In order to diagonse the sleep disorder, sleep doctors perform polysomnography: Patients sleep with attaching several vital sign sensors on their body, and doctors monitor the patients in order to find the exact reason of the sleep disorder. Typical polysmonography makes patients sleep with several sensors on their bodies, which prevents the patients from making a comfortable sleep. Furthermore, it is impossible to have a long-term monitoring since the measurements should be done in sleep hosiptal within a few hours. In order to tackle these problems in the typical polysomnography, we envision the development of a non-contact long-term home polysomnography system using UWB radar and related technologies such as multi-modal signal processing.

Retrospective study on the airway obstruction aspects of computed tomography and lateral cephalometry and the correlation of polysomnography in obstructive sleep apnea patients

  • Jin, Sun-Mi;Lee, Hye-Sung;Ryu, Hyun-Ho;Ryu, Seok-Hwan;Shin, Dong-Yoon;Kim, Chul-Hoon;Kim, Myoung Soo;Chung, In-Kyo
    • Journal of the Korean Association of Oral and Maxillofacial Surgeons
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    • v.38 no.5
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    • pp.295-304
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    • 2012
  • Objectives: Lateral cephalometry, computed tomography (CT) and full-night polysomnography were used to examine the correlation of obstructive sleep apnea (OSA) severity. Materials and Methods: A total of 29 patients (5 females, 24 males) diagnosed with OSA were evaluated by lateral cephalometry, CT and full-night polysomnography. Lateral cephalometry was performed in the closed and open mouth states. The radiographic and polysomnography measurements of the patients with OSA were evaluated statistically to determine the association with OSA severity. Results: A significant relationship was observed between the increased respiratory disturbance index and closing lateral cephalometry. With mouth opening, the airway space narrowed and the OSA worsened. Lateral cephalometry revealed OSA patients to have an inferiorly positioned hyoid bone, longer-than-normal soft palate and narrowing airway space. As OSA was severe, the airway shape was ovoid in the CT horizontal view. Conclusion: Polysomnography and the radiographic parameter can be used for diagnosing OSA.

Study of Cephalometry and Polysomnogrphy in Habitual Snorers (습관성 코골이 환자의 측방두부규격방사선사진과 수면다원검사 연구)

  • 정성창
    • Journal of Oral Medicine and Pain
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    • v.23 no.1
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    • pp.75-84
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    • 1998
  • The Purpose of this Study was to examine the anatomic differences in the upper airway according to severity of respiratory disturbance index of habitual snorers. Forty-three male habitual snorers, aged 28-68, were examined by polysomnography and divided into 4 groups according to severity determined by polysomnography. Anatomic differences in the upper airway were assessed by lateral cephalograms in upright position, and epidemiological surveys were done by using questionnaires. The obtained results were as follows : 1. All subjects were habitual snorers and 35 patients (81.4%) complained the loudness of snoring as severe as be heard outside of the room. 2. According to the results of polysomnography, the number of the primary snoring patients was 7(16.3%), mild obtrusive sleep apnea 7(16.3%), moderate 7(16.3%), and severe 22(51.2%). 3. The respiratory disturbance index (RDI) of subjects was 39.5$\pm$24.4 and the body mass index(BMI) was 26.2$\pm$2. 4. More inferiorly positioned hyoid bone according to the degree of respiratory disturbace index (RDI) was observed. (p<0.001) 5. The width of superior oropharyngeal airway space was according to the degree of RDI. (p<0.001)

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Effects of Hand Acupuncture Therapy on Sleep Quality in Sleep Disrupted Adults - Verification by Polysomnography and Cerebral Blood Flow Test - (수지요법이 수면장애를 가진 성인의 수면의 질에 미치는 효과 - 수면다원검사 및 뇌혈류 검사를 통한 검증 -)

  • Hwang, Eun-Hee
    • Journal of Korean Academy of Nursing
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    • v.37 no.7
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    • pp.1108-1118
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    • 2007
  • Purpose: The purpose of this study was to identify the effects of hand acupuncture therapy on sleep quality by means of a sleep questionnaire, polysomnography and a cerebral blood flow test in $30{\sim}59$ year old adults. Methods: The study was a sham controlled design. Twenty-two adults were assigned to the pellet stimulating group (11) or sham group (11). The pellet stimulating group received hand acupuncture therapy using New Seoam Press Pellets number 1 for 4 weeks. On the other hand, the sham group used the same Adhesive tape in terms of shape, size and quality as New Seoam Press Pellets number 1 for 4 weeks. A Transcranial Doppler Ultrasonography and Carotid Duplex Ultrasonography examination were used for evaluating cerebral blood flow. Data was analyzed using the SPSS 12.0 version program with $X^2-test$, Fisher's exact test and Mann Whitney U-test. Results: In the pellet stimulating group, subjective sleep quality significantly improved more than that of the sham group. Among the sleep indices of the polysomnography, total sleep time and sleep latency of the sham group significantly improved. The cerebral blood flow test didn't show any differences. Conclusion: These results suggest that hand acupuncture therapy is effective for subjective sleep improvement only, not polysomnographical sleep indices and cerebral blood flow.

Quality Assurance in Polysomnography - A Korean experience and critical suggestions (수면다원검사의 정도관리 - 한국에서의 경험 및 제언)

  • Jeong, Do-Un
    • Quality Improvement in Health Care
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    • v.1 no.1
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    • pp.124-131
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    • 1994
  • Polysomnography is an essential methodology for diagnosing and following up sleep disorders and doing researches on human sleep. Sleep medicine, mainly with the utilization of polysomnographic techniques, has developed itself as one of the promising fields in the 21st century medicine. Korea is not an exception in importing and developing sleep medicine into the conventional medicine. However, it still remains to be clarified what polysomnography is for and how it should be done, considering the relatively recent introduction of sleep medicine into Korea. The author, being a board-certified sleep medicine specailist, having experienced spreading out sleep medicine within Korea for the past four years, and having recently set up a major sleep study facility in Korea at Seoul National University Hospital, attempts in this introductory critical article to review the essential issues related to quality assurance in polysomnographic study of human sleep. Also, unconditional introduction of "automated" sleep scoring system, which has been found to have significantly reduced reliability in various studies including the author's own, is critically reviewed. The author suggests that quality assurance and training program should be initiated and established by a responsible sleep medicine-related organization such as the Korean Association of Sleep Medicine and Psychophysiology.

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Diagnosis and Treatment of Sleep Apnea (수면무호흡증의 진단과 치료)

  • Lee, Sang-Haak;Moon, Hwa-Sik
    • Sleep Medicine and Psychophysiology
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    • v.10 no.1
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    • pp.5-11
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    • 2003
  • Sleep apnea syndrome is a common clinical disorder characterized by intermittent cessation of airflow at nose and mouth during sleep. The clinical significance of this syndrome is that it is one of the most common causes of excessive daytime sleepiness. It can also cause neuropsychiatric, cardiovascular, and cerebrovascular complications. The standard for diagnosis of sleep apnea syndrome is nocturnal polysomnography. Because polysomnography is a time-consuming and expensive test, many efforts have been made to replace polysomnography with a simpler system of monitoring, but no method has yet been approved as a definitive investigation method. The goals of treatment for this syndrome are to eliminate excessive daytime sleepiness and to reduce the risk of possible cardiovascular complications. Continuous positive airway pressure is the most definite and widely accepted treatment for achieving these goals. Other treatments such as surgical treatment, oral appliances, and behavioral therapy may be useful for selected patients who are mildly affected.

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Comparison of Clinical Characteristics and Polysomnographic Features between Manifest and Latent REM Sleep Behavior Disorders (발현성 렘수면 행동장애와 잠재성 렘수면 행동장애의 임상적 특성 및 수면다원검사 소견 비교)

  • Kim, Seog-Ju;Lee, Yu-Jin;Kim, Eui-Joong;Jeong, Do-Un
    • Sleep Medicine and Psychophysiology
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    • v.11 no.1
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    • pp.37-43
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    • 2004
  • Objective: The purpose of this paper is to study the possible differences in clinical and polysomnographic findings, depending on the presence or absence of subjective complaints of abnormal sleep behavior, in patients with RWA on polysomnography. Method: We reviewed patient records and polysomnographic data of patients referred to the Sleep Laboratory at Seoul National University Hospital from June 1996 through October 2002. We defined the manifest RBD group (n=32) as patients having both complaints of abnormal sleep behavior and RWA on polysomnography. The latent RBD group (n=20) consisted of patients who exhibited RWA on polysomnography but did not complain of abnormal sleep behavior. The clinical characteristics and polysomnographic findings between the two groups were compared and analyzed. Results: Fifty-two subjects had RWA, as detected by polysomnography (42 males and 10 females, mean age of $55.1{\pm}19.1\;years$). Subjects in the manifest RBD group were significantly older than those in the latent RBD group ($61.59{\pm}13.5$ vs. $44.70{\pm}2.76\;years$, independent t-test, p<0.01). More subjects in the manifest RBD group exhibited abnormal REM behavior on polysomnography than did subjects in the latent RBD group (81.3 vs. 50.0%, Fisher's exact test, p<0.05). No significant differences between the groups were found in the prevalence of brain disorders and primary sleep disorders, gender proportion, and sleep architecture. Conclusion: No difference in sleep architecture was found between the manifest and the latent RBD groups. Only age and the presence of abnormal sleep behavior on polysomnography differentiated the two groups. We suggest that RWA on polysomnography without complaints of abnormal sleep behavior may be early manifestation of manifest RBD. Attention to RWA on polysomnography is necessary to help prevent full-blown RBD from developing.

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Review of Obstructive Sleep Apnea and Persepectives of Life Insurance Underwriting (수면무호흡증의 이해와 언더라이팅 접근)

  • Choi, So-Young
    • The Journal of the Korean life insurance medical association
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    • v.31 no.1
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    • pp.29-33
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    • 2012
  • Nowadays, obstructive sleep apnea is being important to life insurance industry. Many life applicants submit their attending physician's statement, diagnostic certificate, and results of polysomnography to underwriters. So It's necessary to perform evidence-based medical approach. I hope this article is helpful to insurance doctors and underwriters.

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