OB/GYN COMAT REVIEW | FROM QUESTION TO
PERFECTION| STUDY WITH CONFIDENCE!
Nägele Rule - Answer: LMP - 3M + 7d
DA (developmental age) - Answer: number of days till fertilization
GA (gestational age) - Answer: number of days/weeks since LMP
1st trimester - Answer: fertilization until 12w (DA) or 14w (GA)
2nd trimester - Answer: 12w (DA)/14w (GA) until 24w (DA)/26w (GA)
3rd trimester - Answer: 24w (DA)/26w (GA) till delivery
A *pre-viable* fetus is one born _____ __ weeks - Answer: before 24 weeks
A *pre-term* fetus is one born _____ __ weeks - Answer: between 25-37 weeks
A *term* fetus is born ______ ___ weeks - Answer: between 38-42 weeks
A *post-term* fetus is born _____ ___ weeks - Answer: after 42 weeks
An *embryo* = _____ to _____ - Answer: fertilization to 8w GA
A *fetus* = _____ to ____ - Answer: 8w GA to birth
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, A *neonate* = _____ to ____ - Answer: birth to 4 weeks old (after 1m a baby is no longer
considered a neonate)
An *infant* = ____ to ____ - Answer: delivery to 1 year old.
Goodell sign - Answer: softening of cervix (seen at *4 weeks* aka *1st tri*)
Ladin sign - Answer: softening of midline of uterus (seen at *6 weeks* aka *1st tri*)
Chadwick sign - Answer: blue discoloration of vagina and cervix (seen between *6-8w* aka
*1st tri*)
Telangiectasias/Palmar Erythema - Answer: small blood vessels/reddening of palms (*1st
tri*)
Chloasma - Answer: Mask of pregnancy or hyperpigmentation of face; MC on forehead,
nose, cheeks worsening with sun (seen at *~16w* aka *2nd tri*)
Linea nigra - Answer: line of hyperpigmentation, extending from **xiphoid** to **pubic
symphysis** (seen in *2nd tri*)
β-HCG is produced rapidly in the ____ trimester, ____ every 48h for the first __ ____. At ___
EGA, the β-HCG peaks, and levels typically drop in the ____ trimester. In the ___ trimester,
the levels will increase slowly again to a level of _____ to _____. - Answer: *1st* trimester;
doubling every 48h for the first *4 weeks*; At *10w* EGA; drop in the *2nd* trimester; In the
*3rd* trimester, the levels will increase slowly again to levels of *20,000-30,000 IU/mL*
_______ is used to confirm an IUP - Answer: Ultrasound
APPHIA – Crafted with Care and Precision for Academic Excellence.
2
PERFECTION| STUDY WITH CONFIDENCE!
Nägele Rule - Answer: LMP - 3M + 7d
DA (developmental age) - Answer: number of days till fertilization
GA (gestational age) - Answer: number of days/weeks since LMP
1st trimester - Answer: fertilization until 12w (DA) or 14w (GA)
2nd trimester - Answer: 12w (DA)/14w (GA) until 24w (DA)/26w (GA)
3rd trimester - Answer: 24w (DA)/26w (GA) till delivery
A *pre-viable* fetus is one born _____ __ weeks - Answer: before 24 weeks
A *pre-term* fetus is one born _____ __ weeks - Answer: between 25-37 weeks
A *term* fetus is born ______ ___ weeks - Answer: between 38-42 weeks
A *post-term* fetus is born _____ ___ weeks - Answer: after 42 weeks
An *embryo* = _____ to _____ - Answer: fertilization to 8w GA
A *fetus* = _____ to ____ - Answer: 8w GA to birth
APPHIA – Crafted with Care and Precision for Academic Excellence.
1
, A *neonate* = _____ to ____ - Answer: birth to 4 weeks old (after 1m a baby is no longer
considered a neonate)
An *infant* = ____ to ____ - Answer: delivery to 1 year old.
Goodell sign - Answer: softening of cervix (seen at *4 weeks* aka *1st tri*)
Ladin sign - Answer: softening of midline of uterus (seen at *6 weeks* aka *1st tri*)
Chadwick sign - Answer: blue discoloration of vagina and cervix (seen between *6-8w* aka
*1st tri*)
Telangiectasias/Palmar Erythema - Answer: small blood vessels/reddening of palms (*1st
tri*)
Chloasma - Answer: Mask of pregnancy or hyperpigmentation of face; MC on forehead,
nose, cheeks worsening with sun (seen at *~16w* aka *2nd tri*)
Linea nigra - Answer: line of hyperpigmentation, extending from **xiphoid** to **pubic
symphysis** (seen in *2nd tri*)
β-HCG is produced rapidly in the ____ trimester, ____ every 48h for the first __ ____. At ___
EGA, the β-HCG peaks, and levels typically drop in the ____ trimester. In the ___ trimester,
the levels will increase slowly again to a level of _____ to _____. - Answer: *1st* trimester;
doubling every 48h for the first *4 weeks*; At *10w* EGA; drop in the *2nd* trimester; In the
*3rd* trimester, the levels will increase slowly again to levels of *20,000-30,000 IU/mL*
_______ is used to confirm an IUP - Answer: Ultrasound
APPHIA – Crafted with Care and Precision for Academic Excellence.
2
