Obstetrics & Gynaecology revision checklist for NEET PG, INI-CET & FMGE

Day-of-division determines diamniotic monochorionic split

Twin-peak lambda sign confirming dichorionicity

Ampulla as the site of fertilization

Fertilization-to-implantation and tubal transit timing

Double bleb sign — amniotic sac plus yolk sac

FSH separates obstructive from testicular azoospermia

WHO sperm morphology as key fertility marker

Secondary oocyte arrested at meiosis II after ovulation

FSH-driven granulosa growth and estrogen-triggered LH surge

Luteal phase identification by cycle day 20-22

Imperforate hymen with cyclical pain and hematocolpos

Mullerian agenesis versus obstructive outflow

Placental estrogen secretion true-statement trap

Corpus luteum support in first two months

Peak prolactin timing after parturition

Different-sire twins on paternity testing

Definition contrast between the two entities

Marker excluded from the quadruple test (inhibin B)

Quadruple test timing window and high-risk workup

First-trimester combined PAPP-A and beta-hCG screen

Increased nuchal translucency in Down syndrome

Anomaly-scan detection of anencephaly

Additional 300 kcal requirement by trimester

Vitamin A need higher in lactation than pregnancy

Determinants of gestational weight gain

Kangaroo mother care core components

Modified biophysical profile components versus ECHO

CTG deceleration pattern interpretation

Amniocentesis indication in thalassemia carriers

Fetal skin biopsy excluded from karyotyping methods

Blood pressure and resistance fall, not rise

Peak cardiac output timing in gestation

Supine hypotension from IVC compression

Blood-volume expansion and fibrinogen-driven ESR rise

Total T3 as the most-changed thyroid parameter

Falling functional residual capacity at term

Vaginal pH shift during pregnancy

Pelvic grip versus fundal grip on imaging

Twin pregnancy scored as single para in GTPAL

hCG secretion and estrogen suppression of lactation

Two arteries one vein cord-vessel trap

Double bleb and fetoplacental circulation onset

Fetal heart onset and placenta-to-fetal weight ratio

Succenturiate lobe and retained-tissue bleeding

Duncan versus Schultze placental separation

Goodell and Osiander early cervical-softening signs

Hegar sign — lower uterine segment softening

Hartman sign of implantation bleeding

Naegele rule for expected delivery date

Earliest beta-hCG versus 6-week viability ultrasound

Valproate teratogenicity and levetiracetam substitution

First-trimester warfarin-to-heparin switch

ACE inhibitors contraindicated in pregnancy

Fetal alcohol syndrome feature exclusion

Dexamethasone for fetal lung maturity