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every 8 hours quaque octava hora q.a.m., qAM, qam every morning: quaque ante meridiem q.d., qd every day / daily quaque die q.h.s., qhs every night at bedtime quaque hora somni q.d.s, qds, QDS 4 times a day quater die sumendum q.i.d, qid 4 times a day quater in die q.h., qh every hour, hourly quaque hora q.o.d., qod every other day / alternate days
every month q.n. every night QNS q.n.s. quantity not sufficient q.o.d. every other day (from Latin quaque altera die) (deprecated; use "every other day" instead. See the do-not-use list) QOF: Quality and Outcomes Framework (system for payment of GPs in the UK National Health Service) q.o.h. every other hour q.s.
can be mistaken for "qd" or "qod," AMA style avoids use of this abbreviation (spell out "4 times a day") q.l. quantum libet: as much as is requisite q.n. quaque nocte: every night can be mistaken as "q.h." (every hour) q.o.d. quaque altera die: every other day mistaken for "QD," AMA style avoids use of this abbreviation (spell out "every other ...
Abbreviations of weights and measures are pronounced using the expansion of the unit (mg = "milligram") and chemical symbols using the chemical expansion (NaCl = "sodium chloride"). Some initialisms deriving from Latin may be pronounced either as letters ( qid = "cue eye dee") or using the English expansion ( qid = "four times a day").
Medicine. q.h.s., qhs or qHS, Latin for "every night at bedtime", an abbreviation used in medical prescriptions. A post-nominal used by the Queen's Honorary Surgeon, a member of the Medical Household, U.K.
Delayed sleep phase disorder (DSPD), more often known as delayed sleep phase syndrome and also as delayed sleep–wake phase disorder, is the delaying of a person's circadian rhythm (biological clock) compared to those of societal norms. The disorder affects the timing of biological rhythms including sleep, peak period of alertness, core body ...
Polysomnography (PSG) is a multi-parameter type of sleep study [1] and a diagnostic tool in sleep medicine.The test result is called a polysomnogram, also abbreviated PSG.The name is derived from Greek and Latin roots: the Greek πολύς (polus for "many, much", indicating many channels), the Latin somnus ("sleep"), and the Greek γράφειν (graphein, "to write").
A circadian rhythm is an entrainable, endogenous, biological activity that has a period of roughly twenty-four hours. This internal time-keeping mechanism is centralized in the suprachiasmatic nucleus (SCN) of humans, and allows for the internal physiological mechanisms underlying sleep and alertness to become synchronized to external environmental cues, like the light-dark cycle. [2]