This document discusses post-maturity or post-term pregnancy, which is defined as pregnancy continuing beyond 294 days (42 completed weeks) from the last menstrual period. The incidence of post-term pregnancy ranges from 4-14%, with an average of about 10%. Potential causes include incorrect dating, biological variability, and maternal factors like primiparity or previous post-term pregnancy. Diagnosis involves assessing the menstrual history and clinical findings. Investigations to confirm fetal maturity and detect placental insufficiency include ultrasound, amniocentesis, and x-rays. Fetal wellbeing is assessed using tests like NST, biophysical profile, ultrasound for amniotic fluid index, and Doppler. Complications for the fetus include

1. POST MATURITY
Ms. Milan Sawant

2. DEFINITION
Pregnancy continuing
beyond 2 weeks of the expected
date of delivery (>294 days) is
called post maturity or post term
pregnancy.

3. INCIDENCE
Theincidence of pregnancy
continuing beyond 42 completed
weeks (> 294 weeks days) ranges
between 4- 14 %.the average is
about 10%

4. ETIOLOGY
Wrong dates
Biological variability
Maternal factors- primiparity,previous post
term pregnancy , sedentary habit ,elderly
multipara.
Fetal factors-congenital anomalies
Placental factors-sulphate deficiency –low
estrogen

5. DIAGNOSIS
Menstrual history
Suggested clinical findings-
weight record, abdomen
girth,histroy of false pain,
obstetric palpation internal
examination

6. INVESTIGATION
AIMS
1.To confirm the fetal
maturity
2.To detect placental
insufficiency

7. ASSESSMENT OF FETAL MATURITY
Sonography
Amniocentesis
Straight x-ray abdomen

8. ASSESSMENT OF FETAL WELLBEING
NST
Bio physical profile
USG-AFI
Doppler
Clinical findings-Baby general appearance,
fetal weight ,liqour amnii,placenta,cord

9. COMPLICATIONS-FETAL
During pregnancy-fetal hypoxia- fetal
distress
Diminished placental function
Oligohydrominos
Meconium liqour

10. DURING LABOUR
Fetal hypoxia and acidosis
Labour dysfunction
Meconium aspiration
Risk of cord compression due to
oligohydraminos
Shoulder dystocia
Birth trauma-instrumental delivery
Operative delivery

11. FOLLOWING BIRTH
Chemical pneumonitis ,atelectasis and
pulmonary hypertension-meconium
aspiration
Hypoxia and respiratory failure
Hypoglycemia and polycythemia
Increased NICU admission

12. COMPLICATIONS-MATERNAL
Hazards of induction
Instrumental delivery
Operative delivery