Prevalence and outcome of pregnancy among elderly primigravida in Aminu Kano teaching hospital, Kano: a 5 year review

RESUMO

Background: As women increasingly delay child bearing, the proportion of women having their first delivery at ''advanced maternal age'' is expected to rise. These elderly primigravidae have traditionally been considered to be at increased risk of adverse maternal and perinatal outcomes compared to their younger counterparts, because of associated pregnancy and labour complications. Objectives: To determine the prevalence of elderly primigravidae and compare their pregnancy outcome with that of younger primigravidae in Aminu Kano Teaching Hospital, Kano. Materials And Methods: This was a retrospective case control study comparing the pregnancy outcome of primigravid mothers aged 35 years and above (elderly primigravidae) with those of younger primigravidae aged 20-25 years, who delivered at Aminu Kano Teaching Hospital between January 2009 and December 2013. Results: There were 18,452 deliveries during the period under review, out of which 295 were primigravidae aged 35 years or above giving a prevalence of 1.6%. There was statistically significant higher preterm delivery rate ( X2= 10.30, P= 0.001) and caesarean delivery rate (X2= 12.15, P= 0.0001) among the elderly primigravidae compared to younger primigravidae. The elderly primigravidae were more prone to hypertensive disorders in pregnancy (X2=23.96, P=0.0001) and diabetes (X2=4.689, P=0.030) compared to the younger primigravidae. The prevalence of antepartum haemorrhage (X2=6.434, P=0.011) and uterine fibroids (X2=5.549, P=0.019) were also statistically significant among the elderly primigravidae compared to the younger primigravidae. There was no significant difference in the other maternal and foetal outcome measures. Conclusion: The prevalence of elderly primigravidae in this study was 1.6%. The prevalence of obstetric complications such as preterm delivery, antepartum haemorrhage, uterine fibroids coexisting with pregnancy and medical conditions like hypertensive disorders in pregnancy and diabetes mellitus are higher among elderly primigravidae compared to younger primigravidae. The elderly primigravidae were also more liable to have caesarean deliveries than the younger primigravidae. However there was no difference in the fetal outcome in the two groups