Ozhan Turan

Dr. Ozhan Turan


Research Focus & Metrics

Academic Career Length

18Years (2009-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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1 December 2015 in American Journal of Obstetrics and Gynecology
Verified
Journal Article
Closed access
KFKarin A. Fox
Karin A. Fox
ASAlireza A. Shamshirsaz
Alireza A. Shamshirsaz
DCDaniela Carusi
Daniela Carusi
ASAngeles Alvarez Secord
Angeles Alvarez Secord
PLPaula Lee
Paula Lee
MBMichael A. Belfort
Michael A. Belfort

27 August 2019 in The Journal of Maternal-Fetal & Neonatal Medicine
Verified
Journal Article
Closed access
OTOzhan Turan
Ozhan Turan
ASAllison Shannon
Allison Shannon
MAMehmet R. Asoglu
Mehmet R. Asoglu
KGKatherine R. Goetzinger
Katherine R. Goetzinger
Objective: Cesarean hysterectomy for the treatment of placenta accreta spectrum (PAS) disorders has the potential to be associated with significant blood loss, massive transfusion, and operative morbidity. Two major contributors to blood loss are the hysterotomy and the bladder dissection. We introduce a new surgical technique and hypothesize that developing the hysterotomy with a linear cutter and mobilization of the bladder using a vessel sealing system (VSS) before clamping uterine arteries will lead to a total reduction in blood loss and transfusion rates. Materials and methods: This was a case series, which presents clinical outcomes according to our described surgical technique. The following surgical outcomes were collected: operation time (minutes), estimated blood loss (EBL), intraoperative complications, need for reoperation before discharge, and transfusion rates. Our surgical technique utilizes a linear cutter to create a bloodless hysterotomy and a VSS to dissect the vesicouterine tissue. The VSS cauterizes and transects the small vesicouterine and placental-vesical vascular anastomoses that are prone to bleeding. Once the bladder is mobilized below the level of the cervix, the uterine arteries are ligated to complete the key components of the hysterectomy. Results: Of the 23 cases, the median EBL was 1500 cubic centimeters and patients received a median of 1 unit of packed red blood cells. Eleven of the 23 cases did not require any blood transfusion and no patients required massive transfusion. The EBL did not differ between procedures that were performed emergently versus scheduled and it also did not differ between patients that had placenta increta versus placenta percreta, as diagnosed by histopathology. Conclusion: Use of a linear cutter and closure of the lower anastomosis with VSS prior to clamping uterine artery during cesarean hysterectomy can significantly reduce blood loss and transfusion rates. This technique is applicable in emergent and nonemergent settings as well as for the most challenging procedures complicated by placenta percreta.

4 March 2022 in American Journal of Obstetrics and Gynecology
Verified
Journal Article
Closed access
HMHiba J. Mustafa
Hiba J. Mustafa
AJAli Javinani
Ali Javinani
KGKatherine Goetzinger
Katherine Goetzinger
FAFaezeh Aghajani
Faezeh Aghajani
CHChristopher Harman
Christopher Harman
OTOzhan Turan
Ozhan Turan

6 September 2018 in The Journal of Maternal-Fetal & Neonatal Medicine
Verified
Journal Article
Closed access
MAMehmet Resit Asoglu
Mehmet Resit Asoglu
BBBreanne Bears
Breanne Bears
STSifa Turan
Sifa Turan
CHChristopher Harman
Christopher Harman
OTOzhan Turan
Ozhan Turan
Objective: It is not evident whether the mode of delivery (MOD) should be modified in pregnancies complicated by fetal congenital heart defects (CHDs). The question as to whether MOD of CHD infants has a significant impact on neonatal outcome remains elusive. The aim of this study was to evaluate factors associated with MOD and its impact on immediate neonatal outcomes in a cohort of late preterm or term fetuses with CHDs born in a tertiary center. Methods: This retrospective study comprised of singleton pregnancies with known fetal CHDs who delivered after 34 0/7 weeks of gestation over a 7-year period. Fetuses with chromosomal abnormality or stillbirths were excluded. Obstetric risk factors were classified as maternal medical, maternal surgical or fetal comorbidities. MOD was classified as elective cesarean delivery (CD) or attempted vaginal delivery (VD). The latter was further categorized as successful VD or intrapartum CD. The study population was stratified into four categories based on the severity of cardiac abnormalities diagnosed by fetal echocardiography. Immediate neonatal outcomes included Apgar scores and umbilical cord artery pH. Results: Of a total of 222 patients, 79.8% underwent attempted VD and 20.2% had elective CD. Of the attempted VD group, 80.2% had successful VD and 19.8% had intrapartum CD. The frequencies of maternal medical, maternal surgical and fetal comorbidities were higher in the elective CD group than in the attempted VD group and also were higher in the intrapartum CD group than in the successful VD group (p < .05 for all). Multivariate logistic regression models revealed that maternal surgical or fetal comorbidities increased the chance of elective CD and maternal medical or fetal comorbidities decreased the chance of successful VD. The severity of CHDs was not an independent factor that affected MOD. Elective or intrapartum CD did not improve immediate neonatal outcomes. Conclusion: Our results demonstrated that preexisting obstetric comorbidities were significant variables that affected the MOD in fetuses with CHD. Vaginal delivery should be attempted unless obstetric and medical contraindications accompany index pregnancy.

15 November 2021 in BJOG: An International Journal of Obstetrics & Gynaecology
Verified
Journal Article
Closed access
PDF file
HMHiba J. Mustafa
Hiba J. Mustafa
EKEyal Krispin
Eyal Krispin
HTHooman Tadbiri
Hooman Tadbiri
JEJimmy Espinoza
Jimmy Espinoza
ASAlireza A. Shamshirsaz
Alireza A. Shamshirsaz
MCMagdalena Sanz Cortes
Magdalena Sanz Cortes

15 March 2018 in Balkan Medical Journal
Verified
Journal Article
Open access
ŞTŞifa Turan
Şifa Turan
OTOzhan Turan
Ozhan Turan
The ductus venosus is a fetal vessel that has an important function in transfer of oxygen and nutrition rich blood from umbilical vein to vital organs. Its control under active regulation and its anatomy results in a flow-velocity profile that is typically forward throughout the cardiac cycle. This forward cardiac function reflects afterload, cardiac contractility, compliance and vascular volume changes. Ductus venosus assessment gives valuable information in different fetal conditions. For example, during first trimester screening, an abnormal ductus venosus measurement changes the screening result. Assessment of ductus venosus in twin to twin transfusion syndrome is an essential element of staging. In fetal growth restriction, an abnormal waveform mandates imminent delivery. In this review, we will discuss role of ductus venosus assessment and its role in antenatal management and prediction of outcome in certain fetal conditions throughout the pregnancy.