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Sleep and sleep electroencephalogram in depressed patients treated with phenelzine.

BACKGROUND: The beneficial effect of antidepressant interventions has been proposed to depend on suppression of rapid eye movement (REM) sleep or inhibition of electroencephalographic (EEG) slow-wave activity (SWA) in non-REM sleep. Use of the monoamine oxidase inhibitor phenelzine sulfate can eliminate REM sleep. We studied the relation between REM sleep suppression and antidepressant response and the effect of phenelzine therapy on sleep EEG power spectra. METHODS: Open-labeled prescriptions of 30 to 90 mg of phenelzine were given to 11 patients with major depressive disorder (6 men and 5 women; mean age, 41.4 years); all were physically healthy. Mood, dream recall, sleep, sleep EEG, and ocular and muscular activity during sleep were studied before treatment and during the third and fifth weeks of pharmacotherapy. RESULTS: Six patients remitted from depression, 2 responded partially, and 3 showed no antidepressant response. Independent from clinical response, REM sleep was dramatically suppressed. On average, only 4.9 minutes of REM sleep was observed in treatment week 5, and it was completely absent in 6 patients. This effect was compensated for by increased stage 2 sleep. In non-REM sleep, EEG power was higher than at baseline between 16.25 and 25 Hz. Slow-wave activity (power within 0.75-4.5 Hz) and the exponential decline of SWA during sleep were not affected. CONCLUSIONS: Antidepressant response to phenelzine treatment does not depend on elimination of REM sleep or inhibition of SWA in non-REM sleep. In depressed patients, REM sleep is regulated independently from non-REM sleep and can be manipulated without altering the dynamics of SWA.

Adult↗

Improvement of sleep apnea in a patient with cerebral palsy.

Intrathecal baclofen (ITB) can reduce spasticity in adults and children with cerebral palsy. Benefits of ITB therapy include improved Ashworth scores, activities of daily living, and mobility. The impact of ITB therapy on sleep apnea in patients with cerebral palsy has not been reported. This case report describes a 29-yr-old female with mixed spastic athetoid quadriparetic cerebral palsy with dystonia, gross motor function IV, who had sleep apnea, requiring nightly continuous positive airway pressure. She received ITB with the goal to improve her wheelchair positioning and decrease her excessive movements. After the initiation of the ITB, reduction of her spasticity and dystonia was noted, as well as improvement of her sleep apnea. This case suggests that ITB therapy may improve respiratory function through reduction of respiratory muscle spasticity.

Adult↗

[A new multichannel system for detection of sleep apnea syndrome].

A new multichannel system is presented which records and analyzes polysomnographic data. The reasonably priced hardware and software makes the diagnosis and therapy of sleep apnea syndrome possible even in smaller internal departments. By using this system, adjustments to the nCPAP therapy can be undertaken. A newly developed analog-digital converter and software functions record simultaneously up to 24 channels. It performs the functions of commercially available instruments for induction plethysmography. The system has a modular setup. It is also possible to record special parameters, such as transcranial Doppler signals. Without any difficulty, instruments already used in the sleep laboratory can be included into this multichannel system. For instance, the screening device for the sleep apnea syndrome MESAM IV can be easily integrated. With this combination, it is possible to adjust sleep apnea patients to the nCPAP therapy by using the MESAM IV device. The software also enables analysis of breathing parameters and algorithmic revision of channels. In this way, filters can be integrated and amplitude calculations can be conducted.

Analog-Digital Conversion↗

Sleep disturbances in Parkinsonism.

The present article is meant to suggest an approach to the guidelines for the therapy of sleep disturbances in Parkinson's Disease (PD) patients.The factors affecting the quality of life in PD patients are depression, sleep disturbances and dependence. A large review of the literature on sleep disturbances in PD patients, provided the basis for the following classification of the sleep-arousal disturbances in PD patients. We suggest a model based on 3 steps in the treatment of sleep disturbances in PD patients. This model allowing the patient, the spouse or the caregiver a quiet sleep at night, may postpone the retirement and the institutionalization of the PD patient. I. Correct diagnosis of sleep disorders based on detailed anamnesis of the patient and of the spouse or of the caregiver. One week recording on a symptom diary (log) by the patient or the caregiver. Correct diagnosis of sleep disorders co morbidities. Selection of the most appropriate sleep test among: polysomnography (PSG), multiple sleep latency test (MSLT), multiple wake latency test (MWLT), Epworth Sleepiness Scale, actigraphy or video-PSG. II. The nonspecific therapeutic approach consists in: a) Checking the sleep effect on motor performance, is it beneficial, worse or neutral. b) Psycho-physical assistance. c) Dopaminergic adjustment is necessary owing to the progression of the nigrostriatal degeneration and the increased sensitivity of the terminals, which alter the normal modulator mechanisms of the motor centers in PD patients. Among the many neurotransmitters of the nigro-striatal pathway one can distinguish two with a major influence on REM and NonREM sleep. REM sleep corresponds to an increased cholinergic receptor activity and a decreased dopaminergic activity. This is the reason why REM sleep deprivation by suppressing cholinergic receptor activity ameliorates PD motor symptoms. L-Dopa and its agonists by suppressing cholinergic receptors suppress REM sleep. The permanent adjustment according to the progression of the degenerative process of the disease will diminishe aggravation. The following types of sleep-arousal disturbances have to be considered in PD patients: - Sleep Disturbances, Light Fragmented Sleep (LFS), Abnormal Motor Activity During Sleep (AMADS), REM Behavior Disorders (RBD), Sleep Related Breathing Disorders (SRBD), Sleep Related Hallucinations (SRH), Sleep Related Psychotic Behavior (SRPB). - Arousal Disturbances, Sleep Attacks (SA), Excessive Daytime Sleepiness (EDS), Each syndrome has to receive a score according to its severity. III. The specific therapy consists in: LFS: Benzodiazepines & Nondiazepines. AMADS: Clonazepam, Opioid, Apomorphine infusion; RBD: Clonazepam and dopaminergic agonists; SRBD: CPAP, UPPP, nasal interventions, losing weight; SRH: Clozapine, Risperidone; SRPD: Nortriptyline, Clozapine, Olanzepine; SA-adjustment; EDS-arousing drugs. Each therapeutic approach must be tailored to the individual PD patient.

Hallucinations↗

Improving Sleep and PTSD Outcomes in Service Members: A Randomized Controlled Trial Examining the Long-Term Effects of an Integrated Treatment.

Trauma-induced sleep disturbances often persist after successful posttraumatic stress disorder (PTSD) treatment. While integrated protocols combining sleep and exposure-based treatments may maximize outcomes, prior studies are limited and have largely relied on subjective sleep measures or failed to include long-term follow up assessments. Active-duty service members with PTSD (n = 82) were randomly assigned to Compressed Prolonged Exposure (CPE) treatment or Trauma Management Therapy (TMT), which integrates exposure therapy with sleep hygiene training and other skills-based interventions. PTSD symptoms and actigraphy-based sleep were measured at baseline, posttreatment, 3- and 6-month follow-up and data were compared between groups and across time. Posttreatment, both groups showed negligible to small changes in sleep compared to baseline. However, the TMT group evidenced improvements in most sleep parameters by the 3- and 6-month follow-ups, while sleep health generally worsened in the CPE group over time. Between groups, those randomized to TMT exhibited better sleep efficiency (g = 0.24) and onset latency (g = -0.34) at 3-month follow-up, and better sleep quality (g = 0.70), efficiency (g = 0.51), and wake after sleep onset (g = -0.52) at 6-month follow-up. Within both treatment groups, poorer sleep at the 6-month follow-up was correlated with greater PTSD symptom severity measured at the same time point. Integrated treatment for sleep and PTSD produced superior objective sleep outcomes compared to exposure alone, with the most meaningful improvements in sleep observed 6 months after treatment completion. Several critical directions for future studies are discussed.

Humans↗

Sleep homeostasis in primary insomnia.

Three main factors, hyperarousal, circadian dysrhythmia, and homeostatic dysregulation, are thought to underlie chronic insomnia. To date, most of the empirical work has focused on the issue of hyperarousal and very little work has been undertaken on the issue of sleep homeostasis. In the present paper, we review the five lines of evidence which may be used to support the proposition that sleep homeostasis is altered in Primary Insomnia. These include findings pertaining to Slow Wave Sleep density, level of daytime sleepiness, sleepiness following sleep deprivation, recovery sleep following sleep deprivation, and response to sleep restriction therapy. In addition, we provide a discussion regarding how hyperarousal and circadian factors may interact with altered sleep homeostasis, and suggestions for further inquiry.

Arousal↗

CPAP therapy via oronasal mask for obstructive sleep apnea.

STUDY OBJECTIVE: To determine the effectiveness of oronasal masks for positive pressure therapy in alleviating obstructive sleep apnea (OSA). METHODS AND PROCEDURES: Polysomnographic records of all 245 patients with OSA who underwent therapeutic trials of either continuous positive airway pressure (CPAP) or bilevel positive airway pressure between January 1991 and December 1992 were reviewed. Thirty patients who had been prescribed positive pressure therapy employing an oronasal mask were identified. Two patients known to be successfully treated with CPAP via oronasal mask underwent repeat polysomnography. The initial portion of the study was a diagnostic evaluation during which the patients were untreated. During the second portion of the study, both patients used CPAP via an oronasal mask while wearing a mouthpiece designed to maintain oral patency. RESULTS: The 30 patients with OSA who were identified in this study had significant amelioration of OSA while receiving positive pressure therapy via oronasal mask compared with the baseline, diagnostic polysomnogram (apnea index: 55.3 +/- 36.9-->1.6 +/- 3.7, p < 0.001; hypopnea index: 21.2 +/- 20-->2.7 +/- 4.9, p < 0.001; nadir of SaO2: 72.5 +/- 13.9-->87.1 +/- 4.3, p < 0.001, mean +/- SD). Improvement of OSA did not depend on maintenance of a closed mouth, as evidenced by elimination of sleep-disordered breathing in the two patients receiving positive pressure via oronasal mask while wearing a mouthpiece to keep the mouth open. CONCLUSION: Oronasal masks are a viable alternative interface for alleviating OSA with positive pressure therapy in those patients who are unwilling or unable to tolerate conventional nasal interfaces. Although there were no adverse consequences associated with the use of oronasal masks in our patients, appropriate safety precautions should be taken to minimize the possibility of aspiration of gastric contents and avoid untoward sequelae due to positive pressure device failure.

Adult↗

Sleep oxygen desaturation in late sequelae of pulmonary tuberculosis.

Thirty-eight patients with late sequelae of pulmonary tuberculosis (TB seq.) were studied to clarify the characteristics of sleep desaturation in comparison with 40 patients with chronic obstructive pulmonary disease (COPD). While awake, the TB seq. group had a lower % VC and a higher PaCO2. In both groups, the sleep lowest SaO2 was positively correlated with the awake SaO2. The regression line between the sleep lowest SaO2 and the awake baseline SaO2 in the TB seq. group was located below that in the COPD group. Awake PaCO2 was negatively related to the sleep lowest SaO2 only in the TB seq. group. These results indicate that the sleep lowest SaO2 values were lower in TB seq. than in COPD patients with the same levels of SaO2 while awake. Sleep studies are necessary to reveal the indication for nocturnal oxygen therapy in TB seq. patients, especially when they are hypercapnic in spite of their good awake oxygenation.

Aged↗

[Approximation of sleep duration and sleep efficiency using actography].

The actography is a cost-effective semiobjective method to measure sleep/wake-cycles. This is the reason why the actography should be used first. The actography is after the cost-intensive polysomnography the best method in diagnosis of sleep disorders and monitoring of sleep disorder therapy. Actography over several days allows a precise estimation of total sleep time and sleep efficiency and makes possible an analysis of sleep/wake in natural conditions. The estimation is better if the patient is in high wake body activity and the recording time is longer. The mean values of total sleep time and sleep efficiency from polysomnography and actography are congruent.

Adult↗

Sleep in chronic obstructive lung disease.

Profound transient nocturnal hypoxemia is common during REM sleep in "blue bloaters" with chronic obstructive lung disease, these patients having hypoxemia and CO2 retention when awake, when breathing air. These hypoxemic episodes appear to be due to a combination of reduced ventilation in REM sleep with a possible increase in the maldistribution of ventilation to perfusion within the alveoli at that time, and a reduction in functional residual capacity. The episodes are associated with exacerbations of pulmonary vasoconstriction, which can be reversed by oxygen therapy throughout sleep. Cardiac arrhythmias and alterations in ST segments are also found in these patients during sleep when breathing air. It is probable that the severity of hypoxemia in REM sleep can be predicted from knowledge of the arterial PO2 when breathing air when awake in patients with COPD. If so, expensive sleep studies are not essential to indicate the presence of hypoxemia in sleep in these patients, but such studies may be required in obese patients, in those who snore, or those who complain of headache following nocturnal oxygen therapy to demonstrate the presence of the overlap syndrome, in which obstructive sleep apnea is combined with chronic obstructive lung disease in the same patient. Nocturnal oxygen therapy may be dangerous in such patients with the overlap syndrome but appears to cause little rise in PCO2, in patients with COPD and REM-associated hypoxemia alone. Hypoxemia and sleep quality can probably be improved by oxygen therapy in "blue bloaters," and this treatment can also reverse pulmonary hypertension in REM sleep. The new ventilatory stimulant almitrine can also correct hypoxemia, without disturbing sleep quality, but the effects of this drug on pulmonary vasoconstriction during REM sleep are as yet unknown.

Arrhythmias, Cardiac↗

[Improvement of biventricular heart failure in a case of obstructive sleep apnea syndrome by nasal CPAP therapy].

A 42-year-old male patient with obstructive sleep apnea syndrome (OSAS) suffering from biventricular heart failure is reported. He had been treated for OSAS with conventional therapy. However, he complained of severe dyspnea in association with extreme weight gain and general edema. Therefore, he was admitted to our department. He weighed 168 kg on admission, and marked edema was observed. Chest film revealed significant dilatation of the cardiac silhouette and pleural effusion. PaO2 was 37 mmHg and PaCO2 was 66 mmHg. Polysomnography showed an apnea index of 58.3 and severe oxygen desaturation during sleep. Right heart catheterization showed elevation of mean pulmonary artery pressure mPAP: 55 mmHg) and pulmonary capillary wedge pressure (Pcwp: 33 mmHg) suggesting biventricular heart failure. Digitalization and diuretic therapy were immediately initiated. In addition, nasal CPAP was applied to this patient during sleep, and sleep apnea and oxygen desaturation were almost completely reversed. Significant diuresis was observed, and blood gas data and sleep disturbance were improved. Fifty-nine days after admission, his weight had decreased to 96 kg, and mPAP and Pcwp decreased to 32 and 23 mmHg, respectively. This case demonstrates that nasal CPA is an effective tool for the treatment severe OSAS patients.

Adult↗

Predictors and timing of adverse experiences during trandsdermal nicotine therapy.

OBJECTIVES: Difficulty sleeping is a recognised tobacco withdrawal symptom, but sleep problems, like application site reactions, are commonly reported as adverse reactions to transdermal nicotine therapy. However, no studies have examined potential predictive factors associated with the occurrence of expected adverse experiences during transdermal nicotine therapy. The subject of skin tolerability among patients with a history of eczema, psoriasis or other skin disorders is of particular interest, as are the relationships between plasma concentrations of nicotine, concurrent smoking, sleep problems and nausea. METHODS: The cohort study involving 1392 participants was designed to assess the timing, severity and predictive factors of adverse experiences reported during 24-hour transdermal nicotine therapy. Data were collected on patients aged 18 to 70 years old who were smokers and who had expressed a strong desire to stop smoking. The intervention consisted of brief behavioural counselling, a booklet containing smoking cessation advice and instructions for use of the patches, and a 12-week course of decreasing transdermal nicotine doses. RESULTS: Follow-up was available on 1392 out of 1481 study participants. The majority of adverse experiences were mild. Sleep problems occurred in 669 out of 1392 (48%) participants and most often commenced on the day of smoking cessation. Application site reactions occurred in 478 out of 1392 (34%) participants and most often occurred after 6 days of therapy. No predictor had an adjusted hazard ratio above 2. Statistically significant (p < 0.05) predictors of sleep problems were successfully quitting smoking and female gender. Predictors of application site reactions were psoriasis or eczema, other skin conditions, age <40 years, female gender, place of birth outside Australasia, and trade or university education level. Substantially increased nicotine intake during therapy compared with baseline smoking occurred in 8% of participants who smoked concurrently, and 4% of participants who did not (p = 0.1). Increased nicotine intake was associated with a modest increase in the overall rate of adverse experiences (89% vs 63%, p = 0.04) and dizziness/lightheadedness (17% vs 3%, p = 0.03), but not with sleep problems or cardiovascular events. CONCLUSIONS: Transdermal nicotine therapy appears to be well tolerated, even if the user smokes concurrently. Sleep disturbance during therapy appeared to be primarily associated with tobacco withdrawal rather than with nicotine excess from treatment with transdermal nicotine. Study participants with pre-existing skin disorders were somewhat more likely to report mild application site reactions than other participants.

Administration, Cutaneous↗

Clinical and physiological consequences of rapid tryptophan depletion.

We review here the rapid tryptophan depletion (RTD) methodology and its controversial association with depressive relapse. RTD has been used over the past decade to deplete serotonin (5-hydroxy-tryptamine, or 5-HT) in humans and to probe the role of the central serotonin system in a variety of psychiatric conditions. Its current popularity was stimulated by reports that RTD reversed the antidepressant effects of selective serotonin reuptake inhibitors (SSRIs) and monoamine oxidase inhibitors (MAOIs) in remitted patients with a history of depression but not in patients treated with antidepressants which promote catecholaminergic rather than serotonergic neurotransmission (such as tricyclic antidepressants or buproprion). However, RTD has inconsistent effects in terms of full clinical relapse in depressed patients. Pooling the data from all published reports, patients who are either unmedicated and/or fully remitted are much less likely to experience relapse (7 of 61, or approximately 9%) than patients who are recently medicated and partially remitted (63 of 133, or approximately 47%; although, the numbers here may reflect patient overlap between reports). Recently remitted patients who have been treated with non-pharmacological therapies such as total sleep deprivation, electroconvulsive therapy, or bright light therapy also do not commonly show full clinical relapse with RTD. We briefly review RTD effects in other psychiatric disorders, many of which are treated with SSRIs. There is accumulating evidence to suggest that RTD affects central serotonergic neurotransmission. Nevertheless, many questions remain about the ability of RTD to reverse the beneficial effects of SSRIs or MAOIs, or to induce symptoms in unmedicated symptomatic or asymptomatic patients.

Antidepressive Agents↗

Adherence, sleep, and fatigue outcomes after adjuvant breast cancer chemotherapy: results of a feasibility intervention study.

PURPOSE/OBJECTIVES: To evaluate outcomes of an intervention designed to promote sleep and modify fatigue after adjuvant breast cancer chemotherapy. DESIGN: Prospective, repeated measures, quasi-experimental, feasibility study. SETTING: Midwestern urban oncology clinics. SAMPLE: 21 female participants, ages 43-66 years (meanX = 55.3) with stage I or II breast cancer status post four cycles of doxorubicin chemotherapy. Eight had four additional cycles of paclitaxel, 10 also had radiation, and 18 took tamoxifen. METHODS: each woman continued to revise her Individualized Sleep Promotion Plan (ISPP), developed during her first cycle of chemotherapy, that included sleep hygiene, relaxation therapy, stimulus control, and sleep restriction components. The daily diary, Pittsburgh Sleep Quality Index, wrist actigraph, and Piper Fatigue Scale were used for seven days 30, 60, and 90 days after the last chemotherapy treatment and one year after the first chemotherapy treatment. MAIN RESEARCH VARIABLES: Adherence and sleep and wake, fatigue, and ISPP components. FINDINGS: Adherence to the ISPP components remained high at all times (77%-88%) except for stimulus control (36%-56%). Sleep outcome means and the actigraph revealed that (a) sleep latency remained less than 30 minutes per night, (b) the time awake after sleep onset exceeded the desired less than 30 minutes per night, (c) sleep efficiency scores ranged from 82%-92%, (d) total rest time ranged from seven to eight hours per night, (e) feelings on arising ranged from 3.7-3.8 (on a 0-5 scale), (f) nighttime awakenings ranged from 10-11 per night, and (g) daytime naps ranged from 10-15 minutes in length. Fatigue remained low, from 2.9-3.5 on a 0-10 scale. CONCLUSIONS: Adherence rates remained high for most components. Sleep and wake patterns were within normal limits except for the number and duration of night awakenings. Fatigue remained low. IMPLICATIONS FOR NURSING: Future testing using an experimental design will focus on increasing ISPP adherence and decreasing nighttime awakenings. Adopting behavioral techniques to promote sleep may result in improved sleep and lower fatigue after chemotherapy.

Adult↗