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The direct measurements of arterial oxygen tension only offer a static glimpse, and repeated measurements from invasive procedures such as sampling arterial blood for oxygen will disturb the patient's sleep; therefore, noninvasive methods are preferred such as pulse oximetry, transcutaneous oxygen monitoring, transcutaneous carbon dioxide, and ...
Chamomile may be used as a flavouring agent in foods and beverages, mouthwash, soaps, and cosmetics. [5] Chamomile tea is a herbal infusion made from dried flowers and hot water, and may improve sleep quality. [3] Two types of chamomile are used, namely German chamomile (Matricaria recutita) and Roman chamomile (Chamaemelum nobile). [3]
Chamaemelum nobile, commonly known as chamomile (also spelled camomile), is a low perennial plant found in dry fields and around gardens and cultivated grounds in Europe, North America, and South America.
Matricaria chamomilla (synonym: Matricaria recutita), commonly known as chamomile (also spelled camomile), German chamomile, [2] Hungarian chamomile (kamilla), wild chamomile, blue chamomile, or scented mayweed, [3] [4] is an annual plant of the composite family Asteraceae.
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Pharmacognosy is the study of crude drugs obtained from medicinal plants, animals, fungi, and other natural sources. [1] The American Society of Pharmacognosy defines pharmacognosy as "the study of the physical, chemical, biochemical , and biological properties of drugs, drug substances, or potential drugs or drug substances of natural origin ...
Sleep apnea is measured by the apnea-hypopnea index (AHI). An AHI is determined with a sleep study. AHI values for adults are categorized as: [2] [3] Normal: AHI<5; Mild sleep apnea: 5≤AHI<15; Moderate sleep apnea: 15≤AHI<30; Severe sleep apnea: AHI≥30; An episode is when a person hesitates to breathe or stops their breathing altogether.
Disruptions or irregularities to the normal sleep cycle or sleep stage transitions can be detected; for example a hypnogram can show that in obstructive sleep apnea (OSA) the stability of transition between REM and NREM stages is disrupted. [10] The effects of certain medications on sleep architecture can be visualised on a hypnogram.