Definition of Infant, postmature
Infant, postmature: A baby born 2 weeks (14 days) or more after the usual 9 months (280 days) of gestation. The gestation (length of the pregnancy) is calculated from the date of the last menstrual period (LMP). This is an important calculation since, if delivery is delayed 3 weeks beyond term, the infant mortality rate skyrockets to 3 times normal.
The definition of a postmature infant has evolved. A few sources still consider a baby postmature if it is born a week after the usual 9 months' gestation but the current trend is to consider a baby postmature ONLY if it is born 2 weeks (14 days) or more after the usual 9 months of gestation.
The terms "postmature infant" and "post-term infant" are interchangeable.Source: MedTerms™ Medical Dictionary
Last Editorial Review: 6/14/2012
Top RxList Drug News
- First US Case of E coli Resistant to Last-Resort Antibiotic
- FDA Approves Afstyla for Adults, Children With Hemophilia A
- FDA Approves New Diagnostic Imaging Agent to Detect Recurrent Prostate Cancer
- Drug Targeting Blood-Brain Barrier 'Hopeful' in Stroke
- FDA Approves Probuphine Implant for Opioid Dependence
Parenting and Pregnancy
Get tips for baby and you.