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Christian Guilleminault

Publications and source records attributed to Christian Guilleminault.

At least 91 records · Page 5Linked to original sources
PubMed2002

Sleep-disordered Breathing in Neuromuscular Disease.

Patients with neuromuscular disorders involving respiratory muscles (upper airway muscles, respiratory accessory muscles, diaphragm, even abdominal muscles that stabilize the chest) have more significant problems with breathing during sleep, especially during REM sleep, than during wakefulness. There are means of appropriately treating sleep disordered breathing and improving the quality of life of these patients. Treatment helps to avoid daytime symptoms and additional autonomic nervous system dysfunction. The treatment involves support of breathing during sleep. It must be adjusted to the severity of the problem during sleep, which implies systematic investigation and treatment based on polygraphic recordings during sleep. Patients, even when stable, need to be monitored during sleep at least once a year and more often if symptomatic, ie, appearance of any daytime symptom or frequent upper respiratory infection or indication of daytime CO(2) retention.

Journal Article↗
PubMed2002

Rapid Eye Movement Sleep-related Parasomnias.

Among the rapid eye movement (REM) sleep-related parasomnias, the most common and important disorder for which patients present is REM sleep behavior disorder (RBD). Rapid eye movement sleep behavior disorder is often undiagnosed for many years, despite the sometimes bizarre and harmful behaviors involved. Complete evaluation and accurate diagnosis are essential for proper management. This includes medical, sleep/wake, psychiatric, and neurologic histories. Although they may raise feelings of guilt or shame, questions related to sexual and violent behaviors should be directed towards the identified patient as well as their bed partners. Objective studies should include nocturnal polysomnogram with audiovisual monitoring of behavior, electromyography (EMG) of all limbs, and seizure montage. Brain imaging, clinical electroencephalogram (EEG), neuropsychometric testing, and actigraphy may be used adjunctively. Clinicians should have a high index of suspicion for other neurologic conditions, especially neurodegenerative disorders and narcolepsy, because many patients with RBD have these conditions. Rapid eye movement sleep behavior disorder may actually precede symptoms and signs associated with other neurologic disorders, so close follow-up is recommended. Medications that may be causing or exacerbating RBD should be withdrawn, if possible. Clonazepam is very effective in reducing the symptoms of RBD. This treatment is generally well tolerated and may be used long-term. Discontinuation of clonazepam usually leads to relapse of symptoms. Safety-related issues should be discussed with patients and their families.

Journal Article↗
PubMed2002

Chronic insomnia, postmenopausal women, and sleep disordered breathing: part 1. Frequency of sleep disordered breathing in a cohort.

OBJECTIVES: A cohort of postmenopausal women complaining of chronic insomnia for over 6 months and free of hypnotic intake was recruited mostly from the community. Three hundred and ninety-four women were included. The following questions were addressed: How many presents sleep disordered breathing (SDB)? Which type of SDB (upper airway resistance syndrome [UARS] or obstructive sleep apnea syndrome [OSAS]) is the most frequent? Is there a specific upper airway anatomical abnormality in SDB patients predisposing to the syndrome? POPULATION: Subjects were recruited in the community or referred by the Sleep Clinic and all had complaint of chronic poor sleep. METHODOLOGY: First step. Questionnaires, visual analog scales, clinical interview, clinical evaluation with work-up, actigraphy, and ambulatory monitoring were used. Second step. Otolaryngologic evaluation, ambulatory sleep monitoring, and reading of results were used. Subjects negative for SDB at ambulatory monitoring had polysomnography (PSG) with pressure transducer/nasal cannula system and esophageal manometry measurements. RESULTS: Population. Three hundred and ninety-four individuals responded to all entry criteria. Ambulatory monitoring identified 194 subjects with OSAS. Two hundred individuals were not recognized with SDB and were submitted to PSG. This further testing showed that 68 subjects had normal breathing, 62 had UARS, and 100 mild OSAS. Based on otolaryngological evaluation, subjects were classified based on the presence or absence of narrow upper airway, and the location of narrowing was assessed. CONCLUSION: A total of 326 postmenopausal women complaining of chronic insomnia had a SDB, usually with low apnea-hypopnea index (AHI). This total represents about 83% of the studied women. Questions of the role of SDB in the complaint of chronic insomnia are raised.

Aged↗
PubMed2002

Chronic insomnia, premenopausal women and sleep disordered breathing: part 2. Comparison of nondrug treatment trials in normal breathing and UARS post menopausal women complaining of chronic insomnia.

OBJECTIVE: The question addressed here is: Can a discrete sleep disordered breathing (SDB) play a role in the insomnia complaint of postmenopausal chronic insomniacs? To respond to the query, two groups of individuals derived from a cohort of postmenopausal chronic insomniacs recruited mostly from the community were enlisted in a treatment protocol. These subjects were all individuals identified with normal breathing (n=68) and all those recognized with Upper Airway Resistance Syndrome (UARS) (n=62) pooled from a cohort of 349 postmenopausal insomniacs. TREATMENT PROTOCOL: The 62 UARS were allocated to either treatment of chronic insomnia by behavioral approaches or treatment of SDB. Based on ENT evaluation, health professionals in charge of patients selected either treatment with nasal CPAP or treatment of nasal turbinates. A stratification correction was performed to obtain a near equal number of both treatment modalities in each of the two subgroups. The 68 individuals with normal breathing were randomly allocated to immediate behavioral treatment of insomnia or delay treatment of insomnia. The delay treatment received a list of 10 sleep hygiene recommendations by mail. METHODOLOGY: Questionnaires, visual analog scales (VAS), Epworth Sleepiness Scale (ESS), clinical interviews, clinical evaluation with oto-laryngologic clinical assessment of a presence/absence of narrow upper airway and location of narrowing. Actigraphy and polysomnography (PSG) with pressure transducer/and nasal cannula system and esophageal manometry. DATA ANALYSES: All recording data were scored blind to patient's condition. RESULTS: Two subjects in the SBD-CPAP treated group (Group B) and two subjects in the delayed treatment group (Group D) dropped out. Total sleep time was improved compared to baseline in all groups, including the delayed treatment group. One group was significantly better (ANOVA, P=.05) with a more important delta score compared to baseline, and this was the behaviorally treated non-SDB. Sleep latency was significantly decreased in the behaviorally treated group (with or without SBD), P=.05, compared to SBD-treated and delayed treatment groups. Sleep latency was, however, improved in all groups. VAS for "quality of sleep" was higher at 6 months in all the groups when compared to "baseline" values. VAS for "daytime fatigue" showed significant differences among the four groups (ANOVA, P=.01); the overall score at the end of treatment was significantly better in the SDB-treated group than the other three groups. SBD was treated either by radio frequency on nasal turbinate or by nasal CPAP. CPAP-treated patients had a lower VAS score than nasal turbinate treatment, but the difference was only a trend. The delta improvement (6-month baseline condition) in "daytime fatigue" of each subgroup was calculated and compared within and between groups. Despite the small number of subjects, the turbinate-treated subgroup was significantly different from Groups B, C and D (ANOVA, P=.05). When a similar comparison was made with the nasal CPAP group, there was only a nonsignificant trend when compared to Groups B, C and D. CONCLUSION: Abnormal breathing during sleep significantly enhanced complaints of daytime fatigue in postmenopausal chronic insomniacs and this complaint improved with SDB treatment. This improvement is significantly better compared to SDB insomniacs treated with a behavioral regimen. Behavioral treatment, however, gave the best response in the non-SDB chronic insomnia group and improved better long sleep latency even in the SDB group. These results suggest the need to find an appropriate treatment for SBD even if mild and to recognize the role of SDB in relation to symptoms seen with chronic insomnia.

Aged↗
PubMed2002

Can valerian improve the sleep of insomniacs after benzodiazepine withdrawal?

PURPOSE: The authors studied the sleep of patients with insomnia who complained of poor sleep despite chronic use of benzodiazepines (BZDs). The sample consisted of 19 patients (mean age 43.3+/-10.6 years) with primary insomnia (DSM-IV), who had taken BZDs nightly, for 7.1+/-5.4 years. The control group was composed of 18 healthy individuals (mean age 37+/-8 years). Sleep electroencephalogram (EEG) of the patients was analyzed with period amplitude analysis (PAA) and associated algorithms, during chronic BZD use (Night 1), and after 15 days of a valerian placebo trial (initiated after washout of BZD, Night 2). Sleep of control subjects was monitored in parallel. RESULTS: Valerian subjects reported significantly better subjective sleep quality than placebo ones, after BZD withdrawal, despite the presence of a few side effects. However, some of the differences found in sleep structure between Night 1 and Night 2 in both the valerian and placebo groups may be due to the sleep recovery process after BZD washout. Example of this are: the decrease in Sleep Stage 2 and in sigma count; the increase in slow-wave sleep (SWS), and delta count, which were found to be altered by BZD ingestion. There was a significant decrease in wake time after sleep onset (WASO) in valerian subjects when compared to placebo subjects; results were similar to normal controls. Nonetheless, valerian-treated patients also presented longer sleep latency and increased alpha count in SWS than control subjects. CONCLUSIONS: The decrease in WASO associated with the mild anxiolytic effect of valerian appeared to be the major contributor to subjective sleep quality improvement found after 2-week of treatment in insomniacs who had withdrawn from BDZs. Despite subjective improvement, sleep data showed that valerian did not produce faster sleep onset; the increase in alpha count compared with normal controls may point to residual hyperarousabilty, which is known to play a role in insomnia. Nonetheless, we lack data on the extent to which a sedative drug can improve alpha sleep EEG. Thus, the authors suggest that valerian had a positive effect on withdrawal from BDZ use.

Adult↗
PubMed2002

Sleep/wake cycles in the dark: sleep recorded by polysomnography in 26 totally blind subjects compared to controls.

OBJECTIVES: To evaluate subjective sleep difficulties and nocturnal sleep with polysomnography in 26 completely blind subjects, living in normal social environments and to compare the findings with those of matched controls. METHODS: Twenty-six blind individuals with no light perception and free-running melatonin rhythms, as assessed by measurements of urinary and salivary 6-sulfatoxymelatonin, were polygraphically monitored. Actigraphy and Braille sleep logs were obtained from the individuals for 14 days. Their sleep was compared to that of matched controls. RESULTS: Blind individuals were 'free-running' despite normal and regular social interaction. Each had ordinary working conditions and/or a family life with seeing spouse and children. Actigraphy obtained on 14 successive days showed the presence of small amount of daytime 'sleep' - 24.7+/-25.1 min per day. Total sleep time, sleep latency, sleep efficiency, and total REM sleep were significantly lower than in matched controls. Working blind subjects had a slightly higher total sleep time than those retired and unemployed. Congenital blindness, acquired blindness, presence of bilateral prosthetic eyes or presence of normal human eyes did not produce different nocturnal sleep and 'free-running' pattern results. CONCLUSIONS: Reduced total sleep time and other sleep abnormalities were associated with the complaint of daytime sleepiness and poor sleep in blind subjects. The abnormalities of sleep, which may be related to the free-running condition, present an additional challenge for these subjects, who are already severely impaired by their complete lack of vision.

Adult↗
PubMed2002

Sleep and EEG power spectrum in post encephalitis hypersomnia: a case report.

The nocturnal recordings of breathing, and sleep and daytime multiple sleep latency tests over the 5 year follow-up of a patient with post encephalitis hypersomnia are presented. EEG power spectrum analysis was performed on the last polysomnographic recording, and the results were compared with those obtained for a matched control subject. The patient presented initially a hypoventilation syndrome controlled by nasal bilevel positive pressure at night. The syndrome progressively improved, but daytime sleepiness stayed unchanged with limited help from stimulants. Fast Fourier transformation analysis of the last nocturnal recording demonstrates a decrease in absolute power for all frequency bands in all sleep stages, but a cyclical presence of the NREM/REM.

Journal Article↗
PubMed2002

Technical protocol for the use of esophageal manometry in the diagnosis of sleep-related breathing disorders.

A time-tested protocol for intrathoracic pressure monitoring during sleep is described. This method of esophageal manometry uses a fluid-filled catheter to measure variations in transmitted intrathoracic pressure with respiration. Esophageal manometry is an invaluable tool for the sleep specialist in the diagnosis of sleep-related breathing disorders, especially for detecting cases of upper airway resistance syndrome and for distinguishing subtle central apneas from obstructive events. The methods for scoring esophageal pressure, the indications and contraindications for esophageal manometry, the use of esophageal manometry as the 'gold standard' for the measurement of respiratory effort, and directions for future research are also discussed.

Journal Article↗
PubMed2002

Arousal and upper airway resistance (UAR).

OBJECTIVE: The objective of this study is to investigate upper airway resistance (UAR) in infants and children and presence/absence of electroencephalogram (EEG) arousal. METHODS: Polysomnography with nasal cannula/pressure transducer and esophageal manometry; pattern recognition of sleep disordered breathing (SDB) in children. Identification of visually scored arousals in response to SDB. Power spectrum analysis of EEG associated with SDB. RESULTS: Several breathing patterns and change in heart rate (HR) can be seen with abnormal UAR during sleep. SDB may end with or without visual arousal. Power spectrum analysis shows different EEG patterns with termination of UAR and SDB. HR is also variably modified. CONCLUSIONS: Airway reopening and decline in UAR is associated with variable central nervous system activation and only intermittently with arousals.

Journal Article↗
PubMed2002

Distraction osteogenesis in adult obstructive sleep apnea surgery: a preliminary report.

PURPOSE: This study evaluated the potential application of distraction osteogenesis (DO) for skeletal expansion in the management of adult patients with obstructive sleep apnea syndrome (OSAS). PATIENTS AND METHODS: Five consecutive adult patients (3 male, 2 female) underwent a DO procedure with intraoral distraction devices for the management of OSAS. The surgical procedures were mandibular advancement (n = 4, with 3 bilateral advancement and 1 unilateral advancement) and simultaneous maxillomandibular advancement (n = 1). Starting 7 days after surgery, the distraction devices were activated 4 times daily at a rate of 1.0 mm/d until the desired skeletal expansion was achieved. All of the patients underwent pre- and postoperative radiographic analysis and polysomnography. The distraction devices were removed 3 months after the completion of the distraction process. RESULTS: The amount of skeletal advancement by distraction ranged from 5.5 to 12.5 mm, with the mean distance being 8.1 mm. The postoperative polysomnographic results showed improvement of OSAS in all 5 patients with an improvement of the mean RDI from 49.3 events per hour to 6.6 events per hour. The lowest oxygen saturation improved from 79.8% to 85.8%. The mean follow-up period was 12 months. Complications included localized inflammation at the distraction device site (n = 2), temporary temporomandibular joint (TMJ) discomfort during distraction process (n = 1), and temporary paresthesia of the inferior alveolar nerve distribution (n = 2). A moderate amount of pain during the activation of the distraction devices was reported (n = 3) and was adequately treated with analgesics. None of the complications led to permanent problems. CONCLUSION: This limited case series shows that DO is applicable in selected adult patients for skeletal advancement in the treatment of OSAS. However, there are disadvantages with the use of DO, and further investigations are necessary to determine the potential of this technique.

Adult↗
PubMed2002

Obstructive sleep apnea and maxillomandibular advancement: an assessment of airway changes using radiographic and nasopharyngoscopic examinations.

PURPOSE: The study aim was to evaluate the resultant changes in the upper airway after maxillomandibular advancement (MMA) for obstructive sleep apnea. METHODS: Twelve patients were evaluated before and after MMA using fiberoptic nasopharyngoscopy (NPG) with Müller maneuver. An inspiratory force meter was used to ensure the consistency of the inspiratory efforts between the 2 examinations. Preoperative and postoperative lateral cephalometric radiographs were also compared. RESULTS: Decrease in the airway obstruction was shown by the lateral cephalometric radiograph as well as by fiberoptic NPG during passive respiration. Fiberoptic NPG with Müller maneuver also revealed a decrease in airway collapsibility. Although the retrodisplacement of the tongue base was improved, the improvement in lateral pharyngeal wall stability was the most striking. CONCLUSIONS: MMA achieved expansion of the upper airway. In addition, MMA decreased the collapsibility of the airway, especially the lateral pharyngeal walls. These findings may explain the highly successful outcomes of MMA for the treatment of obstructive sleep apnea.

Airway Obstruction↗
PubMed2002

Sleepy driving: accidents and injury.

OBJECTIVE: The study goals were to evaluate the associated risks of driving and to assess predictors of accidents and injury due to sleepiness. STUDY DESIGN: A cross-sectional Internet-linked survey was designed to elicit data on driving habits, sleepiness, accidents, and injuries during the preceding 3 years. Statistical analysis included logistic models with covariate-adjusted P values of <0.01 (odds ratios and 95% confidence intervals or limits). Independent accident predictors were sought. RESULTS: Responses from 10,870 drivers were evaluated. The mean +/- SD age was 36.9 +/- 13 years; 61% were women and 85% were white. The Epworth Sleepiness Scale overall baseline score was 7.4 +/- 4.2 (for drivers with no accidents) and ranged to 12.7 +/- 7.2 (for drivers with > or = 4 accidents) (P = < 0.0001). Twenty-three percent of all respondents experienced > or = 1 accident. Among respondents who reported > or = 4 accidents, a strong association existed for the most recent accident to include injury (P < 0.0001). Sleep disorders were reported by 22.5% of all respondents, with a significantly higher prevalence (35%, P = 0.002) for drivers who had been involved in > or = 3 accidents. CONCLUSION: Factors of sleepiness were strongly associated with a greater risk of automobile accidents. Predictors were identified that may contribute to accidents and injury when associated with sleepiness and driving.

Accidents, Traffic↗
PubMed2002

Temperature-controlled radiofrequency tongue base reduction for sleep-disordered breathing: Long-term outcomes.

OBJECTIVE: Our goal was to evaluate the long-term outcomes of temperature-controlled radiofrequency reduction of the tongue base in sleep-disordered breathing. METHODS: The 18 patients from our initial pilot study were reevaluated. Clinical examinations, polysomnography (PSG), questionnaires, visual analog scales, and a comparative SF-36 were used to assess long-term outcomes. RESULTS: Sixteen of the original 18 patients completed this study; 2 patients were lost to follow-up. The mean follow-up was 28 months. There was a mean weight increase of 3.1 +/- 7.9 kg. The original pretreatment Respiratory Disturbance Index (RDI) was a mean of 39.5 with a mean mean oxygen saturation nadir (LSAT) of 81.9%, and the posttreatment RDI was a mean of 17.8 with a mean LSAT of 88.3%. Follow-up PSG data showed a persistent improvement of the mean Apnea Index compared with pretreatment (5.4 vs 22.1) without significant changes compared with posttreatment (4.1). However, there were changes in the follow-up Hypopnea Index (HI) of 22.9 compared with the pretreatment and posttreatment HI values of 17.4 and 13.6, respectively. This resulted in a relapse of the RDI from a posttreatment value of 17.8 to 28.7. The LSAT also worsened from 88.3% to 85.8%. However, there was no significant deterioration in the quality-of-life measurements by SF-36 or in daytime sleepiness by Epworth Sleepiness Scale. CONCLUSION: The success of temperature-controlled radiofrequency tongue base reduction for sleep-disordered breathing may reduce with time. PSG demonstrated that long-term relapse is primarily reflected in the HI without significant detrimental effects on the patient's quality of life (SF-36) and sleepiness (Epworth Sleepiness Scale). Continual evaluation of this treatment modality is warranted.

Activities of Daily Living↗
PubMed2002

Two-point palatal discrimination in patients with upper airway resistance syndrome, obstructive sleep apnea syndrome, and normal control subjects.

STUDY OBJECTIVE: To compare the results of a two-point palatal discrimination response in normal subjects (n = 15), patients with obstructive sleep apnea syndrome (OSAS) [n = 15], and patients with upper airway resistance syndrome (UARS) [n = 15] matched for age, sex, and body mass index. DESIGN: Comparison study of three subject groups. SETTING: A sleep-disorders clinic. SUBJECTS: Participants were selected based on clinical questionnaire, clinical evaluation, and polysomnography. INTERVENTION: Polysomnography involving measurement of flow limitation with a nasal cannula pressure transducer system and of respiratory effort with esophageal pressure was performed in order to recognize the presence, absence, and types of sleep-disordered breathing. The 45 subjects were submitted to a two-point palatal discrimination study during wakefulness performed by an investigator blinded to the polysomnogram results. RESULTS: Patients with OSAS had a clear impairment of their palatal sensory input with a significant decrement in two-point discrimination, but patients with UARS and normal control subjects had similar responses. Patients with UARS exhibited at least intermittent snoring in most cases. CONCLUSION: The normal responses seen in patients with UARS indicate that these patients are more capable of transmitting sensory inputs than patients with OSAS. This may be one element explaining the difference in arousal response previously documented in UARS compared to OSAS.

Adult↗
PubMed2002

Inattention, hyperactivity, and symptoms of sleep-disordered breathing.

OBJECTIVE: Inattention and hyperactivity are frequent among children with sleep-disordered breathing (SDB) and often improve when SDB is treated. However, the frequency of SDB symptoms among inattentive and hyperactive children has received little study. DESIGN: Cross-sectional survey. SETTING: Two university-affiliated but community-based general pediatrics clinics. PATIENTS: Patients consisted of N = 866 children (469 boys), aged 2.0 to 13.9 years (mean: 6.8 plus minus 3.2 years), with clinic appointments. MEASURES: A validated Pediatric Sleep Questionnaire assessed for habitual snoring (1 item), snoring severity (a 4-item subscale), sleepiness (4 items), and overall risk of SDB (16 items). Parents also completed 2 common behavioral measures, an inattention/hyperactivity scale (IHS) derived from the Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition, and the hyperactivity index (HI, expressed as a t score) of the Conners' Parent Rating Scale. RESULTS: Habitual snoring was reported in 16% (95% confidence interval [CI]: 13, 19) of the participants. High HI scores (>60) were found in 13% (95% CI: 11, 16) of all participants, 22% (95% CI: 15, 29) of habitual snorers, and 12% (95% CI: 9, 14) of nonsnorers. Odds ratios between HI >60 and each of the following were: habitual snoring, 2.2 (95% CI: 1.4, 3.6); 1 additional positive symptom-item on the snoring scale, 1.3 (95% CI: 1.1, 1.5); 1 additional positive item on the sleepiness scale, 1.6 (95% CI: 1.4, 2.0); and a 1-standard deviation increase in the overall SDB score, 1.7 (95% CI: 1.4, 2.0; all odds ratios age- and sex-adjusted). Results were similar for high IHS scores (>1.25). Stratification by age and sex showed that most of the association with snoring (but not sleepiness) derived from boys <8 years old. CONCLUSIONS: Inattention and hyperactivity among general pediatric patients are associated with increased daytime sleepiness and---especially in young boys---snoring and other symptoms of SDB. If sleepiness and SDB do influence daytime behavior, the current results suggest a major public health impact.

Adolescent↗
PubMed2000

Long-Term Results of Maxillomandibular Advancement Surgery.

Surgery is a major modality in the treatment of obstructive sleep apnea syndrome (OSAS), and maxillomandibular advancement (MMA) has been shown to be the most effective surgical option. However, despite the successful short-term (6-9 months) results reported by various investigators, little is known of the long-term clinical outcomes. A review of our long-term clinical results demonstrated that MMA achieves long-term cure in most patients. Aging and minor weight gain did not appear to have a significant adverse effect on the long-term results; however, major weight gain did seem to have a significant negative impact on the long-term outcomes. Therefore, long-term follow-up with proper counseling on weight maintenance or reduction is essential in improving long-term results.

Journal Article↗