Which of the following time-based descriptions of a stage of development of pregnancy is accurate?
1. Viability: 22 to 37 weeks since last menstrual period (assuming fetal weight greater than 500 g)
2. Term: pregnancy from beginning of week 38 of gestation to the end of week 42
3. Preterm: pregnancy from 20 to 28 weeks
4. Postdate: pregnancy that goes beyond 38 weeks
2
1. Incorrect. Viability is the capacity of the fetus to live outside the uterus before coming to term 22 to 24 weeks since LMP.
2. Correct. Term is 38 to 42 weeks of gestation.
3. Incorrect. Preterm is 20 to 37 weeks of gestation.
4. 1. 4. Incorrect. Postdate or postterm is a pregnancy that goes beyond 42 weeks or what is considered the limit of full term.
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