الفهرس 
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Abstract
Sleep is often abnormal in patients with pulmonary diseases. COPD, Bronchial asthma and interstitial lung diseases are the most common pulmonary diseases associated with sleep disorders (weitzenblum et al 2004).Patients with obstructive lung diseases experience nocturnal oxygen desaturation which occur due to alterations in ventilatory control and respiratory muscle function. It normally occurs during sleep but it seems to have profound effects in copd patients, and contribute to the development of sleep abnormalities. This is attributed to the low baseline oxygen saturation in such patients (Cormick et al., 1996). Nocturnal attack is considered an important cause of sleep disturbance in asthmatic patients it also indicates poor control of asthma that necessitate change of medication. (Weersink & Postma 1994). Patients with ILD are likely to be at risk for sleep disordered breathing due to limitations in their gas exchange. Night hypoxemia is more common in patients with ILD compared to normal individuals with healthy lungs. (Mermigkis C, et al 2007). Drugs also can be a major cause of sleep disturbances and the effects vary depending on the drug factors or the patient factors. Many of the commonly used pulmonary medications have the potential to cause sleep disturbances and the clinician needs to be aware of this. Sleep effects can be minimized by making appropriate adjustments to the drugs, making the patient aware of the side effects, counseling on good sleep hygiene and behavioral changes,and using short term medications to treat the sleep disturbance.( Kryger et al., 2005) Polysomnography still remaining the golden standard for diagnosis of sleep disturbance in chronic pulmonary disease. (Friedman et al., 2007)
Lines of treatment differ according to the nature of the disease. But improving general condiotion of the patient and maintaining satisfactory basal oxygen saturation during sleep are essential components in any regimen.