Grandmultiparity in Lagos, Nigeria.

The case-notes and records of grandmultiparous patients delivered at the Lagos University Teaching Hospital between 1st January, 1994 and 31st December, 1996 were analysed. The incidence of grandmultiparity was 4.11%. There were no cases of extreme grandmultiparity. The mean age +/- SD was 33.26 +/- 1.8 years, and the mean parity +/- SD 5.57 +/- 0.38. No patient was under 20 years and none had a parity greater than 9. Fifty-seven (42.22%) were booked patients and 78(57.78%) were unbooked. Anaemia and malpresentation were commonest in the antenatal period, whilst hypertension and disproportion were commonest intrapartum. Fifty per cent of the patients had a spontaneous vaginal delivery. The Caesarean section rate was 30.37%. The incidence of intrapartum complications, cephalopelvic disproportion, obstructed labour and Caesarean section, were found to be higher in the unbooked patients. There was an increased incidence of twin pregnancy and placenta praevia. The maternal mortality ratio was 44.4/1000 amongst the grandmultipara which was not statistically more significant than in the general obstetric population. The perinatal mortality rate was 169/1000 deliveries.