Active clinical trials for "Fetofetal Transfusion"

Objectives: Twin-to-twin transfusion syndrome (TTTS) generates high risk for one of the twins, may lead to preterm delivery and is also associated with neurodevelopmental deficits. The aim of this study was to explore a controlled amnioreduction (AR) procedure in which the amniotic pressure is simultaneously measured with the removed volume of amniotic pressure. Methods: Eleven patients with severe TTTS at stages II and III of Quintero classification were enrolled to the study. The amniotic pressure was measured along with the removed volume of the amniotic pressure between 17-34 weeks of gestation. The umbilical artery S/D ratio for each twin was measured at the beginning and after every 500cc of removed amniotic fluid. Long-term neurodevelopmental outcome of infants with TTTS was evaluated from a questionnaire for assessing the overall health of the surviving twins.

"The virtual reality mask is an innovative technique, alternative to pharmacological medicine that would allow, in addition to its action on pain, to reduce anxiety and thus increase patient satisfaction by improving their experience of a risky situation. The therapeutic effects of the virtual reality mask are based on a distractive effect with attentive capture, an emotional effect due to ludic aspect and positive suggestion, and a behavioral effect. In utero fetoscopy is a potentially painful procedure, particularly at the beginning of the procedure due to the introduction of a fetoscopy trocar in the amniotic cavity through the patient's uterus. It also generates anxiety in mothers because of the risks associated with the pathology and the procedure. This research focuses on the use of a virtual reality mask in the reduction of pain and anxiety during in utero surgical procedures. The study is presented and proposed to the patient during the expert ultrasound examination by the obstetrician-gynecologist. Then the modalities are detailed by the anesthetist during the anesthesia consultation before the surgery. The patient is included in the study after the consent is signed. During the anesthesia consultation, the patient is informed of the possibility of analgesia through a virtual reality mask, associated with local anesthesia. It is explained that in case of pain despite the virtual reality mask and local anesthesia, remifentanil administration remains possible. During the anesthesia consultation, the patient's initial state of anxiety is assessed by the score Amsterdam Preoperative Anxiety and Information Scale. The procedure takes place in the theatre room. Upon arrival in the theatre room (preoperative), an evaluation of the anxiety level is performed using a visual analog scale. The virtual reality mask is applied by the anesthesia team before skin disinfection and the placement of sterile drapes. During the procedure, a local anesthesia (non-adrenaline Xylocaine 1%) is performed as usual in order to insert the trocar in the amniotic cavity (diameter 3.5mm) which will be used to introduce the intra-amniotic fetoscope. If during the procedure, the patient feels pain, agitation, pain-related discomfort, morphine analgesia (Intravenous Remifentanil which means Intravenous Anesthesia with Objective Concentration) may be administered by the anesthesia team. Immediately after the procedure, the virtual reality mask will be removed.

The investigators hypothesize that treatment of twin-twin transfusion syndrome (TTTS) using sequential laser photocoagulation of communicating vessels (SQLPCV) over the predominant method, selective laser photocoagulation of communicating vessels (SLPCV), may provide vascular stability to the donor fetus. The primary objective is to evaluate the perinatal outcome, specifically, donor intrauterine survival of TTTS managed by SQLPCV vs. SLPCV in a prospective, randomized trial.

About one third of twin pregnancies are resulting from a single fertilized oocyte. Two third of these monozygotic twins share a common placenta and are therefore called monochorionic. Due to placental sharing and the ever-present inter-fetal vascular connections, specific complications may arise and lead to an increased risk of intrauterine death and long-term neurodevelopmental impairment. Specific complications include twin-to-twin transfusion syndrome (TTTS), twin-anemia-polycythemia sequence (TAPS), selective intrauterine growth restriction (sIUGR) and discordant major anomalies, occurring in about 10%, 5%, 20% and 6% of monochorionic diamniotic twins. Prenatal interventions may improve perinatal and long-term outcome of affected fetuses. However, general knowledge about early diagnosis of monochorionic twins and their specific complications is still limited in a significant number of practitioners in Austria and systematic analysis of pregnancy outcomes are not conducted. In this prospective multicenter registry study, the investigators aim to include all monochorionic pregnancies in Austria. Main outcome parameter is the occurrence of complications. Secondary outcomes are gestational age at occurrence of complications, gestational age delivery and neonatal outcome. The investigators also strive for long-term outcome, especially of infants following complicated pregnancies or preterm birth.

The purpose of this study is to evaluate the use of diode laser photocoagulation of the communicating vessels in twin-to- twin transfusion syndrome (TTTS) with respect to maternal, fetal and neonatal outcomes.

In this research study, we want to learn more about the role of new innovative surgical devices, the Karl Storz Curved and Straight Fetoscopes for in-utero surgery. A fetoscope is like a small telescope that can see inside of the uterus (womb) during minimally invasive surgery. The curved scope is used for patients with an anterior placenta (front of uterus), while the straight scope is used for patients with a posterior placenta (back of uterus). The scopes will be used to assist in procedures involving fetoscopic laser photocoagulation (FLP), which is a minimally invasive surgery that uses a small camera (fetoscope) to locate abnormal blood vessel connections in the placenta and seal them off using laser energy. These fetoscopes will be utilized in the diagnosis and management of various fetal conditions that can arise during pregnancy. Outcome data will be reported in a descriptive statistical analysis. We will assess the surgical outcomes, short and long-term morbidity, complications, and gestational age of these patients in order to evaluate the benefit of using these devices.

The purpose of this study is to evaluate the efficacy of KARL STORZ curved fetoscope (11508AAK) and its straight version (11506AAK) for laser photocoagulation of placental anastomoses in patients with an anterior placenta and TTTS.

The ZTWINS registry study is an observational, prospective, multi-center study observing women carrying a twin pregnancy who receive snp-based non-invasive prenatal screening and zygosity assessment as part of their medical care.

Each year world-wide, 2.5 million fetuses die unexpectedly in the last half of pregnancy, 25,000 in the United States, making fetal demise ten-times more common than Sudden Infant Death Syndrome. This study will apply a novel type of non-invasive monitoring, called fetal magnetocardiography (fMCG) used thus far to successfully evaluate fetal arrhythmias, in order to discover potential hidden electrophysiologic abnormalities that could lead to fetal demise in five high-risk pregnancy conditions associated with fetal demise.

The purpose of this study is to collect and analyze data regarding natural history, indications for fetal interventions, and maternal and fetal/neonatal outcomes associated with complicated monochorionic twin pregnancy.