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Descriptor English: Pregnancy Trimesters
Descriptor Spanish: Trimestres del Embarazo
Descriptor Portuguese: Trimestres da Gravidez
Descriptor French: Trimestres de grossesse
Entry term(s): Pregnancy Trimester
Trimester, Pregnancy
Trimesters, Pregnancy
Tree number(s): G08.686.707
RDF Unique Identifier: https://id.nlm.nih.gov/mesh/D011264
Scope note: The three approximately equal periods of a normal human PREGNANCY. Each trimester is about three months or 13 to 14 weeks in duration depending on the designation of the first day of gestation.
Annotation: human only; general 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
Allowable Qualifiers: BL blood
CF cerebrospinal fluid
DE drug effects
EH ethnology
GE genetics
IM immunology
ME metabolism
PH physiology
PX psychology
RE radiation effects
UR urine
Previous Indexing: Gestational Age (1968-1974)
Pregnancy (1966-1974)
Time Factors (1967-1974)
specific trimester (1975-1997)
Public MeSH Note: 98
History Note: 98; use explode 1975-97
Entry Version: PREGN TRIMESTERS
DeCS ID: 11706
Unique ID: D011264
Documents indexed in the Virtual Health Library (VHL): Click here to access the VHL documents
Date Established: 1998/01/01
Date of Entry: 1999/01/01
Revision Date: 2008/07/08
Pregnancy Trimesters - Preferred
Concept UI M0017491
Scope note The three approximately equal periods of a normal human PREGNANCY. Each trimester is about three months or 13 to 14 weeks in duration depending on the designation of the first day of gestation.
Preferred term Pregnancy Trimesters
Entry term(s) Pregnancy Trimester
Trimester, Pregnancy
Trimesters, Pregnancy



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