Publications by authors named "Mert Ozan Bahtiyar"

Article Synopsis
  • Traditional beliefs held that placental vascular anastomoses only occur in monochorionic pregnancies, but recent reports show they can also be present in dichorionic twins.
  • Conditions like twin to twin transfusion syndrome (TTTS) and twin anemia polycythemia sequence (TAPS) can affect these dichorionic pregnancies.
  • The authors discuss a specific case and existing literature to highlight the need for more research on these conditions in dichorionic gestations to improve prenatal care and reduce risks.
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Introduction: Fetal care centers (FCCs) in the USA lack a standardized instrument to measure person-centered care. This study aimed to develop and validate the Person-Centered Care in Fetal Care Centers (PCC-FCC) Scale.

Methods: Initial items were developed based on literature and input from clinicians and former patients.

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Rationale: Maternal fetal surgery (MFS) has developed rapidly since the 1960s and centers for fetal diagnosis and therapy (CFDT) have proliferated. As a result, CFDT clinicians have intervened with fetuses through pregnant bodies for decades, yet the patienthood status of the fetus and its implications for the pregnant person's autonomy have been relatively unexamined.

Objective: Our overall research aims were threefold: (1) to explore how clinicians train for and provide counseling for MFS; (2) to examine how clinicians assess fetal patienthood and its implications; and (3) to understand clinicians' professed needs and their recommendations for education and training for the provision of MFS counseling.

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Introduction: Prenatal counseling about maternal-fetal surgery can be traumatic and confusing for pregnant people. It can also be technically and emotionally complex for clinicians. As maternal-fetal surgery rapidly advances and becomes more common, more evidence is needed to inform counseling practices.

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Fetal echocardiogram aids in prenatal identification of neonates at high risk for congenital heart defects (CHD). Prenatal detection rates for CHD have increased with improved ultrasound technology, the use of the early fetal echocardiography, and standardization of the performance of the fetal echocardiogram. Accurate prenatal detection of CHD, particularly complex CHD, is an important contributor to improved survival rates for patients with CHD.

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Background/purpose: Although maternal-fetal surgery to treat fetal anomalies such as spina bifida continues to grow more common, potential health disparities in the field remain relatively unexamined. To address this gap, we identified maternal-fetal surgery studies with the highest level of evidence and analyzed the reporting of participant sociodemographic characteristics and representation of racial and ethnic groups.

Methods: We conducted a systematic review of the scientific literature using biomedical databases.

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Background: Pregnant women with coronavirus disease 2019 (COVID-19) may be at greater risk of poor maternal and pregnancy outcomes. This retrospective analysis reports clinical and pregnancy outcomes among hospitalized pregnant women with COVID-19 in the United States.

Methods: The Premier Healthcare Database-Special Release was used to examine the impact of COVID-19 among pregnant women aged 15-44 years who were hospitalized and who delivered compared with pregnant women without COVID-19.

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Introduction: Uterine incision based on the placental location in open maternal-fetal surgery (OMFS) has never been evaluated in regard to maternal or fetal outcomes.

Objective: The aim of this study was to investigate whether an anterior placenta was associated with increased rates of intraoperative, perioperative, antepartum, obstetric, or neonatal complications in mothers and babies who underwent OMFS for fetal myelomeningocele (fMMC) closure.

Methods: Data from the international multicenter prospective registry of patients who underwent OMFS for fMMC closure (fMMC Consortium Registry, December 15, 2010-June 31, 2019) was used to compare fetal and maternal outcomes between anterior and posterior placental locations.

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Objective: To examine how nurses describe caring for women and families in specialized fetal diagnosis and treatment settings.

Design: We used narrative inquiry.

Setting: A secure online survey platform.

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Objective: To study the incidence and clinical significance of congenital heart defects (CHDs) detected by fetal echocardiography in pregnancies conceived by in vitro fertilization (IVF).

Design: Cohort study comparing a prospectively maintained database of all fetal echocardiograms from 2012 to 2018 and pooled data from the Connecticut Birth Defects Registry and statewide hospital discharge data.

Setting: Large tertiary care center.

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Objective: This study aimed to synthesize the qualitative literature on parental experiences of fetal care to reflect events that happened across the continuum of care and to better understand parents' positive and negative experiences with care delivery.

Data Sources: Eligible studies published until June 2020 were retrieved from MEDLINE, Embase, Cochrane Central Register of Controlled Trials, EBSCO CINAHL, Web of Science, and ProQuest.

Study Eligibility Criteria: Studies must have been: (1) published in English in a peer-reviewed journal or in ProQuest, (2) available in full text, (3) contained a qualitative component, and (4) focused on expectant parents' experiences of tertiary, coordinated, multidisciplinary prenatal diagnosis and care related to a fetal anomaly.

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Objective: To identify essential structures, processes, outcomes, and challenges of nursing practice in fetal care and to identify research priorities for nurses in fetal care.

Design: We used a modified Delphi method to achieve consensus.

Setting: A secure online survey platform.

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Background: Intrauterine infection and/or inflammation (Triple I) is an important cause of preterm birth (PTB) and adverse newborn outcomes. N-acetylcysteine (NAC) is a Food and Drug Administration (FDA)-approved drug safely administered to pregnant women with acetaminophen toxicity.

Methods: We conducted a single-center, quadruple-blind, placebo-controlled trial of pregnant women with impending PTB due to confirmed Triple I.

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Article Synopsis
  • A 28-year-old pregnant woman with a history of intravenous drug use developed tricuspid valve endocarditis during her pregnancy.
  • A collaborative team involving cardiac surgeons, obstetricians, and neonatal specialists was necessary for her management.
  • Although she faced serious complications, she underwent a successful cesarean delivery and subsequent heart surgery, with both her and her baby being stable post-treatment.
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Background: We have limited knowledge about the effects of antipsychotic exposure on the development of gestational diabetes mellitus (GDM). Aim of this study is to perform a systematic review and meta-analysis to assess GDM risk associated with antipsychotic exposure in pregnancy.

Methods: Systematic literature search was performed using PubMed, Science Direct, Scopus, and Web of Science databases up to August 22, 2018.

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Objective: This study aimed to determine the relationship between fetal exposure to intra-amniotic infection/inflammation (IAI) and fetal heart ventricular function as assessed by circulatory levels of N-terminal fragment brain natriuretic protein (NT-proBNP) and the Tei index.

Study Design: We analyzed 70 samples of paired amniotic fluid (AF) and cord blood retrieved from mothers who delivered preterm at <34 weeks as follows: Yes-IAI ( = 36) and No-IAI ( = 34). IAI was diagnosed by amniocentesis and AF mass spectrometry.

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Background: The only definitive treatment for twin-to-twin transfusion syndrome is minimally invasive fetoscopic surgery for the selective coagulation of placental blood vessels. Fetoscopic surgery is a technically challenging operation, mainly due to the poor visibility conditions in the uterine environment. We present the design of an algorithm for the computerized enhancement of fetoscopic video and show that the enhanced video increases the ability of human users to identify blood vessels within fetoscopic video rapidly and accurately.

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Objectives: To assess the diagnostic performance of the fetal cardiac axis (CA) and/or cardiac position (CP) versus the congenital pulmonary malformation volume ratio (CVR) in predicting any and severe neonatal respiratory morbidity in fetal congenital lung lesions.

Methods: This work was an 11-year retrospective cohort study. The sensitivity, specificity, positive predictive value, and negative predictive value of CA and/or CP assessment in prediction of respiratory morbidity were calculated before 24 weeks' gestation and between 24 and 32 weeks and compared to CVR cutoffs obtained from the literature.

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Objective: To describe the treatment and subsequent pregnancy outcomes in patients with cesarean scar pregnancies at a single institution over 5 years.

Methods: This is a case series of all cesarean scar pregnancies diagnosed from May 2013 to March 2018 at Yale-New Haven Hospital. Data were collected on each patient using electronic medical record review and included patient demographics; medical, surgical, and obstetric history; pregnancy characteristics; treatment modalities used; response to therapy; complications; and subsequent pregnancy outcomes.

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Preterm prelabor rupture of membranes (PPROM), which can precede or follow intra-amniotic infection/inflammation (IAI), is a poorly understood pregnancy complication. Tenascin-X (TNX) is a connective tissue extracellular matrix protein that regulates fibrillogenesis of collagens I, III, and V. Our goal was to investigate the presence and level of soluble TNX (sTNX) in amniotic fluid (AF) and TNX expression in reproductive tissues of pregnancies complicated by PPROM and IAI.

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Prelabor rupture of the membranes (PROM) near the limit of viability is associated with significant risks for both mother and fetus. Preterm labor, intra-amniotic infection, and placental abruption are the immediate risks to the pregnancy; however, the fetus incurs additional risks related to the sequela of persistent oligohydramnios. Transabdominal intra-amniotic infusions have been studied.

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Monochorionic twin pregnancies are at risk of unique complications due to placental sharing and vascular connections between placental territories assigned for each twin. Twin anemia-polycythemia sequence (TAPS) is an infrequent but potentially dangerous complication of abnormal placental vascular connections. TAPS occurs due to very-small-caliber (< 1 mm) abnormal placental vascular connections which lead to chronic anemia in the donor twin and polycythemia in the recipient twin.

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The objective of this study is to report surgical and obstetric outcomes of patients following abdominal cerclage placement through either minimally invasive or open techniques. Subjects of this retrospective cohort study were patients at two referral centers specializing in high-risk pregnancy and minimally invasive gynecologic surgery. Electronic medical records of all patients who underwent abdominal cerclage placement between December 2011 and December 2015 at Yale New Haven Hospital and Bridgeport Hospital were reviewed.

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