Objective: To review all critically ill obstetric patients transferred to intensive care unit(ICU), its frequency, indication for admission, intervention required and outcomes and factors which contribute the maternal mortality. Methdology: This descriptive study was conducted in department of Obstetrics and Gynaecology Unit II of Liaquat University Of Medical and Health Sciences Hospital, Hyderabad From 1st July 2011 to 30th June 2012. All pregnant women up to 6 week postpartum admitted in our department and subsequently shifted to ICU were included in our study. Data collected includes maternal age, parity, gestational age, booking status, indication for ICU transfer, intervention after admission in ward and in ICU, length of stay, and mortality during hospitalization and cause of death were recorded in predesigned proforma and data was analysed by using SPSS version and frequency and percentages were caculated. Results: Total 3800 deliveries occurred in 1 year duration. Out of which 83 women were admitted in our department and then shifted to ICU thus representing the frequency of 2.1% or 1 in 46 deliveries. Majority 63(76%) women were young and belong to age group between 21-30 years of age and most of them 41(49.4%) were multigravida. Sixty four (77%) were un-booked. The most common indication for admission were hypertensive disorders of pregnancy (52%), obstetrical haemorrhage(22.8%), sepsis (10%), liver disorders of pregnancy (7%), anesthesia complications(2.4%) and Dissiminated intravascular coagulation(2.4%).The most common mode of delivery was caesarean section in 49.4% women while 37.4% women delivered vaginally. 71% women required mechanical ventilation and 53% required inotropic support. There were 38(46%) maternal deaths and causes were multiorgan failure, intracerebral haemorrhage, dissiminated intravascular coagulation and septic shock syndrome. Conclusion: The need for maternal intensive care should be one of most important measure considered in the quality of maternal care. Early admission and management of critically ill obstetric patients in ICU may decrease the maternal morbidity and mortality.