How is the sleep apnea of GH excess different from the sleep apnea of thyroid hormone deficiency? GH excess is associated with a high proportion of OSA and central sleep apnea, whereas hypothyroidism is almost uniformly associated with OSA. Up to 60% of patients with acromegaly are eventually found to have sleep apnea by PSG …
What endocrine diseases are associated with Obstructive Sleep Apnea? The endocrine diseases commonly associated with OSA are hypothyroidism , acromegaly , and polycystic ovary syndrome (PCOS), but the most prevalent are obesity and T2DM . As would be expected, the statistics for these disorders vary, depending on the series. Although it was once thought that all patients with OSA had subclinical hypothyroidism, this has now …
In view of increased SNS tone in OSA does the comorbidity of OSA interfere with the assessment of metanephrines and catecholamines when screening for pheochromocytoma? Yes. OSA results in an appropriate release of catecholamines in response to physiologic stress or disease, just as myocardial infarctions, cerebral vascular accidents, and acute heart failure are associated with …
How common is sleep deprivation? Sleep deprivation can be acute or chronic. By definition, going without sleep for 24 hours is total acute sleep loss, whereas sleeping < 6 hours a night for ≥ 6 nights is considered chronic sleep deprivation. People in industrialized nations are sleeping less. In the United States, for example, over …
What are the key features of sleep deprivation versus sleep apnea? Does sleep deprivation worsen mild obstructive sleep apnea? Here is an abstract of a study conducted with the objective of effect of acute sleep deprivation on polysomnography Study objectives: Sleep deprivation is believed to worsen obstructive sleep apnea (OSA). A study assessed the effect of …
What is the prevalence of Obstructive Sleep Apnea? The prevalence is dependent on the definition of OSA. The earliest epidemiologic investigations, primarily of white men, estimated up to 4% had OSA (60%–90% were obese). The prevalence of OSA for adults age 30 to 60 years is currently 24% in men and 9% in women . Obesity is …
What are respiratory events during sleep? Respiratory events are apnea, hypopnea, and respiratory effort–related arousal (RERA). An apneic episode is an airflow decrease of at least 90% from baseline lasting at least 10 seconds (try holding your own breath for 10 seconds!). Hypopnea is defined as 10 seconds of at least a 30% decrease in …