Pregnancy Trimesters
| Definition: |
The three periods of three months each in the normal pregnancy. |
| Notes: |
human only; GEN or unspecified; prefer specifics; trimesters are indexed only when the point of the article or substantively discussed: they are not sought out routinely nor indexed when merely mentioned; DF: PREGN TRIMESTERS |
| Previously Indexed: |
Gestational Age (1968-1974),Pregnancy (1966-1974),Time Factors (1967-1974),specific trimester (1975-1997) |
Pregnancy Trimesters Categories.
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Pregnancy Trimester, First - Period of pregnancy from the first day of the last normal menstrual period through the completion of 14 weeks (98 days) of gestation. |
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Pregnancy Trimester, Second - Period of pregnancy from the beginning of the 15th through the 28th completed week (99 to 196 days) of gestation. |
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Pregnancy Trimester, Third - Period of pregnancy from the beginning of the 29th through the 42nd completed week (197 to 294 days) of gestation. |
Pregnancy Trimesters Definitions and Terms
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