Overnight
Overnight
Overnight (pronunciation: /ˌoʊvərˈnaɪt/) is an English term that refers to the period from evening to morning. The term is often used in various contexts in the medical field.
Etymology
The term "overnight" is derived from the Old English words "ofer," meaning "over," and "niht," meaning "night." It has been used in the English language since the 14th century.
Medical Usage
In the medical field, "overnight" is often used to describe procedures, tests, or conditions that occur or last from one evening until the next morning. Some examples include:
- Overnight fasting: This is a common requirement for certain medical tests, such as blood glucose testing or cholesterol testing. It involves not eating or drinking anything except water for a specified period of time, usually 8-12 hours, before the test.
- Overnight hospital stay: This refers to a patient being admitted to the hospital and staying for at least one night. This could be due to surgery, severe illness, or observation for potential health issues.
- Overnight sleep study: Also known as a polysomnogram, this test is used to diagnose sleep disorders. It involves monitoring a patient's sleep patterns, breathing, heart rate, and movements overnight.
Related Terms
- Evening: The period of time at the end of the day, usually from about 6 p.m. to bedtime.
- Morning: The period of time from sunrise to noon.
- Nocturnal: Pertaining to or occurring during the night.
- Diurnal: Pertaining to or occurring during the day.
External links
- Medical encyclopedia article on Overnight
- Wikipedia's article - Overnight
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