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Irregular sleep–wake rhythm disorder (ISWRD) is a rare form of circadian rhythm sleep disorder. [ 2 ] [ 3 ] It is characterized by numerous naps throughout the 24-hour period, no main nighttime sleep episode, and irregularity from day to day. [ 4 ]
Occasional noncircadian days may occur (i.e., sleep is "skipped" for an entire day and night plus some portion of the following day), followed by a sleep period lasting 12 to 18 hours. The symptoms do not meet the criteria for any other sleep disorder causing inability to initiate sleep or excessive sleepiness.
Conversely, more sleep regularity was protective against heart attack and stroke. A new study found an increased risk of cardiovascular events in people with irregular sleep patterns, even when ...
Long QT syndrome (LQTS) is a condition affecting repolarization (relaxing) of the heart after a heartbeat, giving rise to an abnormally lengthy QT interval. [7] It results in an increased risk of an irregular heartbeat which can result in fainting, drowning, seizures, or sudden death. [1] These episodes can be triggered by exercise or stress. [6]
Sleeping and waking up at different times is associated with an increased risk of heart attack and stroke, even for people who get the recommended amount of sleep, according to new research.
If you notice that you're waking up in the middle of the night, feeling exhausted in the middle of the day, or experiencing some other unpleasantness at the same time each day or night, consider ...