Keck School Faculty

Joseph G Ouzounian

Joseph G Ouzounian

Chair of Obstetrics and Gynecology
Daniel R Mishell, MD, Professor of Obstetrics & Gynecology (Clinical Scholar)
Obstetrics & Gynecology
IRD 220 2020 Zonal Ave Off Campus Los Angeles

2007 Jun; 196(6):595. e1-3; discussion 595. e3. . View in PubMed

Trends, characteristics, and outcomes of placenta accreta spectrum: a national study in the United StatesAm J Obstet Gynecol. 2021 11; 225(5):534. e1-534. e38. . View in PubMed

Assessment of abnormal placentation in pregnancies conceived with assisted reproductive technology Int J Gynaecol Obstet. 2023 May 14. . View in PubMed

Trends of preterm delivery in the United States, 2016-2019 AJOG Glob Rep. 2023 May; 3(2):100181. . View in PubMed

The association between uterine adenomyosis and adverse obstetric outcomes: A propensity score-matched analysis Acta Obstet Gynecol Scand. 2023 Apr 23. . View in PubMed

Severe Maternal Morbidity and Mortality of Pregnant Patients With COVID-19 Infection During the Early Pandemic Period in the US JAMA Netw Open. 2023 Apr 03; 6(4):e237149. . View in PubMed

Uptake of postplacental intrauterine device placement at cesarean delivery AJOG Glob Rep. 2023 Feb; 3(1):100157. . View in PubMed

Incidence trends of shoulder dystocia and associated risk factors: A nationwide analysis in the United States Int J Gynaecol Obstet. 2023 Jan 27. . View in PubMed

Unsuspected placenta accreta spectrum at vaginal delivery: assessment of incidence, characteristics, and maternal morbidity Am J Obstet Gynecol MFM. 2023 05; 5(5):100805. . View in PubMed

Pregnancy characteristics and outcomes after bariatric surgery: national-level analysis in the United States Surg Obes Relat Dis. 2023 04; 19(4):364-373. . View in PubMed

Patient characteristics of contraception and sterilization selection at vaginal delivery F S Rep. 2022 Dec; 3(4):361-365. . View in PubMed

Temporal trends of cesarean delivery on maternal request in the United States, 2016-2019 Eur J Obstet Gynecol Reprod Biol. 2022 Dec; 279:77-83. . View in PubMed

Association of severe maternal morbidity and post-traumatic stress disorder AJOG Glob Rep. 2022 Nov; 2(4):100111. . View in PubMed

Association of Pregnancy Characteristics and Maternal Mortality With Amniotic Fluid Embolism JAMA Netw Open. 2022 Nov 01; 5(11):e2242842. . View in PubMed

Prevalence of anxiety and depressive disorders in pregnant women with malignancy Int J Gynaecol Obstet. 2022 Jul 11. . View in PubMed

Prior vertical uterine incision: Effect on subsequent pregnancy characteristics and outcomes Int J Gynaecol Obstet. 2022 Mar 25. . View in PubMed

Selective intrauterine growth restriction (SIUGR) type II: proposed subclassification to guide surgical management J Matern Fetal Neonatal Med. 2022 Mar; 35(6):1184-1191. . View in PubMed

Shift in delivery timing of placenta accreta spectrum: Influence of a society-based recommendation Eur J Obstet Gynecol Reprod Biol. 2022 10; 277:124-125. . View in PubMed

Trends, characteristics, and outcomes of conservative management for placenta percreta Arch Gynecol Obstet. 2022 09; 306(3):913-920. . View in PubMed

Zika virus infection and pregnancy outcomes in the United States, 2017-2019 Int J Gynaecol Obstet. 2022 07; 158(1):223-224. . View in PubMed

Racial and ethnic disparity in characteristics and outcomes of women with placenta accreta spectrum: a comparative study Reprod Sci. 2022 07; 29(7):1988-2000. . View in PubMed

Hospital surgical volume-outcome relationship in caesarean hysterectomy for placenta accreta spectrum BJOG. 2022 05; 129(6):986-993. . View in PubMed

Assessment of Severe Maternal Morbidity and Mortality in Pregnancies Complicated by Cancer in the US JAMA Oncol. 2022 08 01; 8(8):1213-1216. . View in PubMed

Gynecologic oncologists in surgery for placenta accreta spectrum: a survey for practice, experience, and interest Int J Gynecol Cancer. 2022 11 07; 32(11):1433-1442. . View in PubMed

Amylase concentration and activity in the amniotic fluid of fetal rats with retinoic acid induced myelomeningocele J Matern Fetal Neonatal Med. 2022 Jan; 35(1):147-154. . View in PubMed

Utilizations and outcomes of intra-arterial balloon occlusion at cesarean hysterectomy for placenta accreta spectrum Acta Obstet Gynecol Scand. 2021 Dec; 100(12):2234-2243. . View in PubMed

Evaluation and Management of Fetal Macrosomia Obstet Gynecol Clin North Am. 2021 Jun; 48(2):387-399. . View in PubMed

Decreasing Failure-to-Rescue From Severe Maternal Morbidity at Cesarean Delivery: Recent US Trends JAMA Surg. 2021 06 01; 156(6):585-587. . View in PubMed

Implementation of multidisciplinary practice change to improve outcomes for women with placenta accreta spectrum Eur J Obstet Gynecol Reprod Biol. 2020 Mar; 246:194-196. . View in PubMed

Fetoscopic Laser Ablation Therapy for Type II Vasa Previa Fetal Diagn Ther. 2020; 47(9):682-688. . View in PubMed

Midtrimester isolated oligohydramnios in monochorionic diamniotic multiple gestations J Matern Fetal Neonatal Med. 2019 Feb; 32(4):590-596. . View in PubMed

Characteristics of referred patients with twin-twin transfusion syndrome who did not undergo fetal therapy Prenat Diagn. 2019 03; 39(4):280-286. . View in PubMed

Long-Term Outcomes After Thoracoamniotic Shunt for Pleural Effusions With Secondary Hydrops J Surg Res. 2019 01; 233:304-309. . View in PubMed

Management of twin-twin transfusion syndrome with an extremely short cervix J Obstet Gynaecol. 2018 Apr; 38(3):359-362. . View in PubMed

Types II and III congenital pulmonary airway malformation with hydrops treated in utero with percutaneous sclerotherapy Prenat Diagn. 2018 06; 38(7):493-498. . View in PubMed

Comparison of umbilical cord occlusion methods: Radiofrequency ablation versus laser photocoagulation Prenat Diagn. 2018 01; 38(2):110-116. . View in PubMed

Awaiting blood pressure stabilization in ambulatory pregnant women: is 5? J Matern Fetal Neonatal Med. 2017 Aug; 30(16):1933-1937.. View in PubMed

Umbilical Cord Occlusion via Laser Coagulation in Monochorionic Multifetal Gestations before and after 20 Weeks of Gestation Fetal Diagn Ther. 2017; 42(1):9-16. . View in PubMed

Clinical Risk Factors Do Not Predict Shoulder Dystocia J Reprod Med. 2016 Nov-Dec; 61(11-12):575-80. . View in PubMed

Non-specific red cell reactivity in an obstetric population J Matern Fetal Neonatal Med. 2016 Sep; 29(17):2848-51. . View in PubMed

Shoulder Dystocia: Incidence and Risk Factors Clin Obstet Gynecol. 2016 12; 59(4):791-794. . View in PubMed

Neonatal Outcomes by Mode of Delivery in Preterm Birth Am J Perinatol. 2015 Dec; 32(14):1292-7. . View in PubMed

Maternal and fetal signs and symptoms associated with uterine rupture in women with prior cesarean delivery J Matern Fetal Neonatal Med. 2015 Jul; 28(11):1270-1277. . View in PubMed

Midtrimester isolated polyhydramnios in monochorionic diamniotic multiple gestationsAm J Obstet Gynecol. 2014 Sep; 211(3):303. e1-5. . View in PubMed

A case-control review of placentas from patients with intrahepatic cholestasis of pregnancy Fetal Pediatr Pathol. 2014 Aug; 33(4):210-5. . View in PubMed

Chorioamniotic membrane separation over the cervical os ("moon sign") in twin-twin transfusion syndrome J Ultrasound Med. 2014 Jul; 33(7):1147-54. . View in PubMed

Risk factors for neonatal brachial plexus palsy Semin Perinatol. 2014 Jun; 38(4):219-21. . View in PubMed

A comparison of obstetrical outcomes with labor induction agents used at term J Matern Fetal Neonatal Med. 2014 Apr; 27(6):592-6. . View in PubMed

Perioperative characteristics associated with preterm birth in twin-twin transfusion syndrome treated by laser surgeryAm J Obstet Gynecol. 2013 Sep; 209(3):264. e1-8. . View in PubMed

Thyroid disease and gestational diabetes mellitus (GDM): is there a connection? J Matern Fetal Neonatal Med. 2013 Jul; 26(11):1139-42.. View in PubMed

Bile acid concentration reference ranges in a pregnant Latina population Am J Perinatol. 2013 May; 30(5):389-93. . View in PubMed

Brachial plexus palsy and shoulder dystocia: obstetric risk factors remain elusive Am J Perinatol. 2013 Apr; 30(4):303-7. . View in PubMed

Alteration of endothelial function markers in women with gestational diabetes and their fetuses J Matern Fetal Neonatal Med. 2013 Mar; 26(5):507-12. . View in PubMed

Neonatal brachial plexus palsy with vaginal birth after cesarean delivery: a case-control studyAm J Obstet Gynecol. 2013 Mar; 208(3):229. e1-5. . View in PubMed

Severe brachial plexus palsy in women without shoulder dystociaIn reply. Obstet Gynecol. 2013 Mar; 121(3):686. . View in PubMed

In reply Obstet Gynecol. 2013 Jan; 121(1):191-2. . View in PubMed

Helicobacter pylori and thrombocytopenia in the pregnant hispanic population J Matern Fetal Neonatal Med. 2012 Dec; 25(12):2588-90. . View in PubMed

Increased composite maternal and neonatal morbidity associated with ultrasonographically suspected fetal macrosomia J Matern Fetal Neonatal Med. 2012 Oct; 25(10):1953-9. . View in PubMed

Severe brachial plexus palsy in women without shoulder dystocia Obstet Gynecol. 2012 Sep; 120(3):539-41. . View in PubMed

Physiologic changes during normal pregnancy and delivery Cardiol Clin. 2012 Aug; 30(3):317-29. . View in PubMed

Recurrent shoulder dystocia: analysis of incidence and risk factors Am J Perinatol. 2012 Aug; 29(7):515-8. . View in PubMed

A low-fidelity total abdominal hysterectomy teaching model for obstetrics and gynecology residents Simul Healthc. 2012 Apr; 7(2):123-6. . View in PubMed

Pre-pregnancy weight and excess weight gain are risk factors for macrosomia in women with gestational diabetes J Perinatol. 2011 Nov; 31(11):717-21. . View in PubMed

Vaginal birth after cesarean section: risk of uterine rupture with labor induction Am J Perinatol. 2011 Sep; 28(8):593-6. . View in PubMed

Late pregnancy complications can affect risk estimates of elective induction of labor J Matern Fetal Neonatal Med. 2011 Jun; 24(6):787-94. . View in PubMed

One-hour post-glucola results and pre-pregnancy body mass index are associated with the need for insulin therapy in women with gestational diabetes J Matern Fetal Neonatal Med. 2011 May; 24(5):718-22. . View in PubMed

Cervical length and delivery outcomes in patients with prophylactic cervical cerclage Am J Perinatol. 2011 Apr; 28(4):273-6. . View in PubMed

Posterior arm shoulder dystocia alleviated by the Zavanelli maneuver Am J Perinatol. 2010 Oct; 27(9):749-51. . View in PubMed

Shoulder dystocia: the unpreventable obstetric emergency with empiric management guidelines Am J Obstet Gynecol. 2006 Sep; 195(3):657-72. . View in PubMed

2005 Jun; 192(6):1933-5; discussion 1935-8. . View in PubMed

A comparison of shoulder dystocia-associated transient and permanent brachial plexus palsies Obstet Gynecol. 2003 Sep; 102(3):544-8. . View in PubMed

The use of helical computed tomography in pregnancy for the diagnosis of acute appendicitis Am J Obstet Gynecol. 2001 Apr; 184(5):954-7. . View in PubMed

Brachial plexus palsy: an in utero injury? Am J Obstet Gynecol. 1999 May; 180(5):1303-7.. View in PubMed

Obstetric maneuvers for shoulder dystocia and associated fetal morbidity Am J Obstet Gynecol. 1998 Jun; 178(6):1126-30. . View in PubMed

Permanent Erb's palsy: a lack of a relationship with obstetrical risk factors Am J Perinatol. 1998 Apr; 15(4):221-3. . View in PubMed

Symphyseal separation and transient femoral neuropathy associated with the McRoberts' maneuver Am J Obstet Gynecol. 1998 Mar; 178(3):609-10. . View in PubMed

Spontaneous vaginal delivery: a risk factor for Erb's palsy? Am J Obstet Gynecol. 1998 Mar; 178(3):423-7.. View in PubMed

Brachial plexus palsy associated with cesarean section: an in utero injury? Am J Obstet Gynecol. 1997 Nov; 177(5):1162-4.. View in PubMed

The accuracy of intrapartum ultrasonographic fetal weight estimation in diabetic pregnancies Am J Obstet Gynecol. 1997 Sep; 177(3):503-6. . View in PubMed

Ultrasonographic fetal cardiac measurement in isoimmunized pregnancies J Reprod Med. 1997 Jun; 42(6):342-6. . View in PubMed

The McRoberts' maneuver for the alleviation of shoulder dystocia: how successful is it? Am J Obstet Gynecol. 1997 Mar; 176(3):656-61.. View in PubMed

Permanent Erb palsy: a traction-related injury? Obstet Gynecol. 1997 Jan; 89(1):139-41.. View in PubMed

Radiologic studies in acute fatty liver of pregnancyA review of the literature and 19 new cases. J Reprod Med. 1996 Nov; 41(11):839-43. . View in PubMed

Intrahepatic cholestasis of pregnancy: perinatal outcome associated with expectant management Am J Obstet Gynecol. 1996 Oct; 175(4 Pt 1):957-60. . View in PubMed

Clinical significance of prenatal ultrasonographic intestinal dilatation in fetuses with gastroschisis Am J Obstet Gynecol. 1996 Oct; 175(4 Pt 1):982-4. . View in PubMed

The nonreactive nonstress test: predictive value for neonatal anemia in the isoimmunized pregnancy Obstet Gynecol. 1996 Sep; 88(3):364-7. . View in PubMed

Prognostic significance of antenatally detected fetal pyelectasis Ultrasound Obstet Gynecol. 1996 Jun; 7(6):424-8. . View in PubMed

Clinical role of amnio-infusion Baillieres Clin Obstet Gynaecol. 1996 Jun; 10(2):259-72. . View in PubMed

Systemic vascular resistance index determined by thoracic electrical bioimpedance predicts the risk for maternal hypotension during regional anesthesia for cesarean delivery Am J Obstet Gynecol. 1996 Mar; 174(3):1019-25. . View in PubMed

Amnioinfusion in women with previous cesarean births: a preliminary report Am J Obstet Gynecol. 1996 Feb; 174(2):783-6. . View in PubMed

Disseminated intravascular coagulation and antithrombin III depression in acute fatty liver of pregnancy Am J Obstet Gynecol. 1996 Jan; 174(1 Pt 1):211-6. . View in PubMed

Peripheral primitive neuroectodermal tumor of the vulva Gynecol Oncol. 1994 Aug; 54(2):254-8. . View in PubMed

Noninvasive determination of cardiac output by thoracic electrical bioimpedance Crit Care Med. 1990 Jan; 18(1):121-2. . View in PubMed

Measurement of cardiac output in pregnancy by thoracic electrical bioimpedance and thermodilutionA preliminary report. Am J Obstet Gynecol. 1989 Sep; 161(3):680-4. . View in PubMed

Joseph Ouzounian, MD, MBA is the Daniel R. Mishell Jr. MD Endowed Professor and Chair of the Department of Obstetrics and Gynecology at the Keck School of Medicine of USC. Dr. Ouzounian received his MD degree from USC, and completed his residency in obstetrics and gynecology and his fellowship in maternal-fetal medicine at USC. Subsequently, Dr. Ouzounian also earned a Master of Business Administration from the Marshall School of Business at USC. Dr. Ouzounian is board certified in both obstetrics and gynecology and maternal-fetal medicine. At the University he is actively involved in research, teaching, and clinical practice, in addition to his various leadership and strategic development roles. He has published extensively in scholarly medical journals and textbooks on topics in high risk obstetrics and perinatal medicine.

Recognized as a leader in perinatal medicine, Dr. Ouzounian lectures frequently at national and international meetings on topics in high risk obstetrics.
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