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Central sleep apnea. During sleep, the breathing centers of the brain can pause their activity, leading to prolonged periods of apnea with potentially serious consequences. Hyperventilation followed by prolonged breath-holding. This hyperventilation, attempted by some swimmers, reduces the amount of carbon dioxide in the lungs.
Hypopnea is overly shallow breathing or an abnormally low respiratory rate. Hypopnea is typically defined by a decreased amount of air movement into the lungs and can cause hypoxemia (low levels of oxygen in the blood.) It commonly is due to partial obstruction of the upper airway, but can also have neurological origins in central sleep apnea.
Pulse oximetry is a method used to estimate the percentage of oxygen bound to hemoglobin in the blood. [10] This approximation to SaO 2 is designated SpO 2 (peripheral oxygen saturation). The pulse oximeter is a small device that clips to the body (typically a finger, an earlobe or an infant's foot) and displays its reading, or transfers it to ...
Hypoventilation, [7] which is insufficient ventilation of the lungs due to any cause (fatigue, excessive work of breathing, barbiturate poisoning, pneumothorax, sleep apnea, etc.). Low-inspired oxygen partial pressure, which may be caused by breathing normal air at low ambient pressures due to altitude, [7] [8] by breathing hypoxic breathing ...
The conditions of hypoxia and hypercapnia, whether caused by apnea or not, trigger additional effects on the body.The immediate effects of central sleep apnea on the body depend on how long the failure to breathe endures, how short is the interval between failures to breathe, and the presence or absence of independent conditions whose effects amplify those of an apneic episode.
The AHI is calculated by dividing the number of apnea events by the number of hours of sleep. The AHI values for adults are categorized as: [1] [2] Normal: AHI<5; Mild sleep apnea: 5≤AHI<15; Moderate sleep apnea: 15≤AHI<30; Severe sleep apnea: AHI≥30; For children, because of their different physiology, an AHI in excess of 1 is considered ...
12 Horror Movies About Sleep Disorders to Watch During Spooky Season. ... The low-budget film was successful enough at the box office to be followed by two sequels as well as a 2021 remake ...
Obstructive sleep apnea (OSA) is the most common sleep-related breathing disorder and is characterized by recurrent episodes of complete or partial obstruction of the upper airway leading to reduced or absent breathing during sleep.
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