FREQUENCY OF PLACENTA PREVIA IN WOMEN WITH HISTORY OF PREVIOUS CAESAREAN AND NORMAL VAGINAL DELIVERIES
AbstractBackground: Placenta previa is known to be associated with previous caesarean deliveries, advancedmaternal age, increasing parity, smoking, curettage and myomectomy. This study was carried out tocompare the frequency of placenta previa, in women with previous caesareans versus those with normalvaginal deliveries. Methods: It was one year study conducted at the Department of Obstetrics andGynaecology Unit B, Ayub Teaching Hospital, Abbottabad. One hundred women were included in thestudy, 50 in Group A with previous caesarean deliveries, and 50 in Group B with previous normalvaginal deliveries. Frequency of placenta previa in both groups was analysed. Results: Placenta previawas found in one (2%) woman in Group A, and in two women (4%) in Group B. It was not found inpara 4 or less in both groups. One woman in Group A and two women in Group B with parity 4 ormore had placenta previa (p<0.05). None of the women with previous one scar had placenta previa,while with previous 2 scars one had placenta previa (p<0.05). One woman with placenta previa inGroup A and both women with placenta previa in Group B were more than 25 years old. Placentaprevia was not found in women below 25 years of age. Conclusion: Previous one caesarean section didnot increase the frequency of placenta previa. Increasing number of scars, increasing maternal agebeyond 25 years and increasing parity beyond 4 were associated with placenta previa.Keywords: Placenta, placenta previa, caesarean section, scar, vaginal delivery, parity
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