Polysomnography reveals unexpectedly high rates of organic sleep disorders in patients with prediagnosed primary insomnia.

Department of Psychiatry and Psychotherapy, University of Regensburg, Universitaetsstraße 84, 93042, Regensburg, Germany, .
Sleep And Breathing (Impact Factor: 2.87). 10/2011; DOI: 10.1007/s11325-011-0608-8
Source: PubMed

ABSTRACT OBJECTIVE: It is a matter of debate whether patients with primary insomnia require a polysomnographic examination in order to exclude specific sleep disorders such as sleep apnea syndrome (SAS) or periodic limb movements (PLM). Using a prospective design, we investigated the prevalence of organic sleep disorders by means of polysomnography (PSG) in a series of patients who were previously diagnosed with primary insomnia. This diagnosis was based on a clinical exam and an ambulatory monitoring device or previous PSG. METHODS: Seventy-seven women and 16 men (mean age 55.12 ± 13.21 years) who were admitted for cognitive behavioral therapy for insomnia were evaluated by PSG including cardiorespiratory parameters and tibialis EMG. Among them, 50 patients had undergone a clinical exam by a sleep specialist; in 18 patients, actigraphy or portable monitoring had been performed to exclude SAS or PLM; 25 patients had undergone PSG in another sleep lab previously. RESULTS: In 32 patients (34% of the sample), a PSG revealed a specific sleep disorder (SAS 16; PLMD 11; both 5), resulting in therapeutic consequences for 21 patients (SAS 10; PLMD 9; both 2). SAS and PLM patients were older and SAS patients had a higher body mass index than insomnia patients without additional findings. CONCLUSION: Indications for a PSG should be handled less restrictively in the diagnostic workup of older insomnia patients since they have a higher risk of comorbid sleep disorders even in the absence of the clinical signs of SAS or PLM.

  • Source
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: Recent scientific evidences have brought a paradigm shift in our approach towards the concepts of insomnia and its management. The differentiation between primary and secondary insomnia was proved more hypothetical than actual and based upon the current evidences insomnia subtypes described in earlier system have been lumped into one-Insomnia Disorder. Research in this field suggests that insomnia occurring during psychiatric or medical disorders has a bidirectional and interactive relationship with and coexisting medical and psychiatric illnesses. The new approach looks to coexisting psychiatric or medical disorders as comorbid conditions and hence specifying two coexisting conditions. Therefore, the management and treatment plans should address both conditions. A number of sleep disorders may present with insomnia like symptoms and these disorders should be treated efficiently in order to alleviate insomnia symptoms. In such cases, a thorough history from the patient and his/her bed-partner is warranted. Moreover, some patients may need polysomnography or other diagnostic tests like actigraphy to confirm the diagnosis of the underlying sleep disorder. DSM-5 classification system of sleep-wake disorders has several advantages, e.g., it has seen insomnia across different dimensions to make it clinically more useful; it focuses on the assessment of severity and guides the mental health professional when to refer a patient of insomnia to a sleep specialist; lastly, it may encourage the psychiatrists to opt for the Sleep Medicine as a career.
    Asian Journal of Psychiatry 09/2014; DOI:10.1016/j.ajp.2014.09.003
  • [Show abstract] [Hide abstract]
    ABSTRACT: Sleep disorders and insomnia are more prevalent in patients with cancer than in the normal population. Sleep disorders consist of delayed sleep latency, waking episodes after sleep onset, unrefreshing sleep, reduced quality of sleep, and reduced sleep efficiency. Sleep disorders cluster with pain, fatigue, depression, anxiety, and vasomotor symptoms, depending on stage of disease, treatment, and comorbidities. Premorbid sleep problems and shift work have been associated with a higher prevalence of cancer; in fact, shift work has been labeled a carcinogen. Treatment for insomnia includes cognitive behavioral therapy with sleep hygiene, bright-light therapy, exercise, yoga, melatonin, and hypnotic medications. Unfortunately, there are few randomized trials in cancer-related sleep disorders such that most recommendations particularly for hypnotics are based on treatment for primary insomnia. In this article, insomnia is reviewed as a predisposing factor to cancer, prior to and during treatment, in cancer survivorship and in advanced cancer. Recommendations for treatment are based on low-quality evidence but are also reviewed.
    The Cancer Journal 09/2014; 20(5):330-344. DOI:10.1097/PPO.0000000000000071 · 3.61 Impact Factor