Objectives: To review and compare the incidence rate of obstetric hysterectomised patients between two seven-year periods. The periods were from October 1, 1988 to September 30, 1995 and from October 1^st, 1995 to September 30^th, 2002. The data included demographic characteristics, indications, possible risk factors, complications, and operative managements.

Material and Method: Retrospective analysis of the data that was collected from medical and labor records of the obstetric hysterectomised patients from October 1, 1995 to September 30, 2002, the second seven-year period, compared with those in Pratumthong and Wattanaruangkowit’s study from October 1, 1988 to September 30, 1995, the first seven-year period.

Results: Between 1998 and 2002, there were 201, 696 total deliveries with 111 obstetric hysterectomies. A significant increase in the average incidence rate of hysterectomy from 0.42 to 0.76/1,000 deliveries and maternal age, placenta previa and blood transfusion in the second period compared with the first period (p < 0.05). Postoperative complications and the other risk factors of obstetric hysterectomy were not significant difference.

Conclusion: The present study of obstetric hysterectomy demonstrates a significant increase in the incidence of hysterectomised rate, maternal age, blood transfusion, and placenta previa in the second period compared with the first period.

Keywords: Obstetric hysterectomy, Incidence, Complication, Rajavithi Hospital