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Platypnea or platypnoea is shortness of breath (dyspnea) that is relieved when lying down, and worsens when sitting or standing upright. It is the opposite of orthopnea. [1] The condition was first described in 1949 and named in 1969.
Orthopnea or orthopnoea [1] is shortness of breath (dyspnea) that occurs when lying flat, [2] causing the person to have to sleep propped up in bed or sitting in a chair. It is commonly seen as a late manifestation of heart failure, resulting from fluid redistribution into the central circulation, causing an increase in pulmonary capillary pressure and causing difficulty in breathing.
Central sleep apnea in heart failure's epidemiology is relevant, as sleep apnea and heart failure have both been associated in people with paroxysmal nocturnal dyspnea. [12] According to the study, researchers were able to conclude that ~70% of people with heart failure had breathing disorders while they slept, while half of that ~70% also ...
A person with a sitting disability caused by excessive pain is unable to sit or stand for long periods of time, and will need to lie down. The availability of benches or other devices where one may lie down may be a critical factor that determines whether a means of transportation or a public building is usable or not for many people with this form of disability.
For the purposes of sleep studies, episodes of full upper airway collapse for at least ten seconds are called apneas. [90] Sleep paralysis, characterized by temporary paralysis of the body shortly before or after sleep. Sleep paralysis may be accompanied by visual, auditory or tactile hallucinations. It is not a disorder unless severe, and is ...
The drop in blood pressure may be sudden (vasovagal orthostatic hypotension), within 3 minutes (classic orthostatic hypotension) or gradual (delayed orthostatic hypotension). [4] It is defined as a fall in systolic blood pressure of at least 20 mmHg or diastolic blood pressure of at least 10 mmHg after 3 minutes of standing.
Sleep apnea is the second most frequent cause of secondary hypersomnia, affecting up to 4% of middle-aged adults, mostly men. Upper airway resistance syndrome (UARS) is a clinical variant of sleep apnea that can also cause hypersomnia. [8] Just as other sleep disorders (like narcolepsy) can coexist with sleep apnea, the same is true for UARS.
Insomnia, also known as sleeplessness, is a sleep disorder where people have trouble sleeping. [1] [11] They may have difficulty falling asleep, or staying asleep for as long as desired.