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A pregnancy is considered term at 37 weeks of gestation. It is preterm if less than 37 weeks and postterm at or beyond 42 weeks of gestation. American College of Obstetricians and Gynecologists have recommended further division with early term 37 weeks up to 39 weeks, full term 39 weeks up to 41 weeks, and late term 41 weeks up to 42 weeks. [24]
Abbreviation Meaning G: gravidity (total number of pregnancies, successful or not) guanosine: G6PD: glucose-6-phosphate-dehydrogenase: GA: general anaesthesia gestational age: GABA: gamma-aminobutyric acid: GABHS: group A beta-hemolytic streptococcus: GACI Generalized Arterial Calcification of Infancy: GAD: Generalized anxiety disorder: GAF ...
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").
A "multigravida" or "secundigravida" is a female who has been pregnant more than once. Terms such as "gravida 0", referring to a nulligravida, "gravida 1" for a primigravida, and so on, can also be used. The term "elderly primigravida" has also been used to refer to a female in their first pregnancy who is at least 35 years old. [7]
The main discussion of these abbreviations in the context of drug prescriptions and other medical prescriptions is at List of abbreviations used in medical prescriptions. Some of these abbreviations are best not used, as marked and explained here.
Abbreviation Meaning B x: biopsy: Ba: barium: BAC: blood alcohol content: BAD: bipolar affective disorder: BADLs: basic ADLs basic activities of daily living: BAL: bronchoalveolar lavage British anti-Lewisite blood alcohol level: BAO: basic acid output: BAT: brown adipose tissue: BAV: bicuspid aortic valve: BBA: bilateral breast augmentation ...
HELLP syndrome (Hemolysis, elevated liver enzymes, low platelets in pregnancy) HEMA: hydroxy ethyl methacrylate, a material in soft contact lenses: Hema: hematest – e.g. hema (-) – fecal occult blood: HES: hydroxyethyl starch: HETE: hydroxyeicosatetraenoic acid: HEV: hepatitis E virus: HF: heart failure: HFpEF: heart failure with preserved ...
The mean pregnancy length has been estimated to be 283.4 days of gestational age as timed from the first day of the last menstrual period and 280.6 days when retrospectively estimated by obstetric ultrasound measurement of the fetal biparietal diameter (BPD) in the second trimester. [12]