Prediction of Preterm Deliveries by Cervical Length Measurement With Embryo Transfer Catheter in ICSI Patients
Can Cervical Length Measurement With Embryo Transfer Catheter Predict Preterm Deliveries in ICSI Patients?
The aim of this study is to examine the potential value of cervical length (CL) measurement with embryo transfer catheter in the prediction of spontaneous preterm deliveries in intracytoplasmic sperm injection (ICSI) cycles.
Preterm birth is the leading cause of perinatal death and handicap in children. It is clear that ICSI pregnancies are at high risk groupfor preterm delivery (PTD). In singletons there is an estimated two-fold increased risk following ICSI.
CL measurement with ultrasound in mid-trimester (22-24 weeks) is the best method for the prediction of PTD: The shorter the CL, the higher risk of PTD. Recent evidence suggests that at first trimester (11-13 weeks), the risk for PTD is inversely related to CL. It has been shown that the measurement of CL on pregnancy is an effective method for identification of the group at high risk for PTD.
In embryo transfer, catheter is placed the through cervical canal. The method we will use in this study, CL measurement with transfer catheter, will give more precise results than measurement with ultrasound.
No study has been performed to evaluate the prediction of PTD by analyzing measurements of CL, preconceptionally. Our study will be the first in this topic.
There is a certain disadvantage of measuring CL during pregnancy: The effectiveness of prophylactic administrations (progesterone, cervical cerclage etc.) may be inversely related to the gestation at which treatment is initiated. If we know the risk of PTD before gestation, single embryo transfer will be preferred to avoid from multiple pregnancies that also increase the relative risk of PTD, in ICSI pregnancies.
연구 개요
상세 설명
Cervical length measurement protocol: The physician inserted a sterile Collin vaginal speculum; the cervix was exposed and gently cleaned with sterile gauze pads. Cervical mucus was gently removed with a syringe if abundant. A nurse concomitantly performed transabdominal ultrasound scan. Estimated cervical length is determined before transfer procedure. The Sure View Wallace Embryo Replacement Catheter (No. CE118; Smith Medical, Hythe, Kent, UK). There are marked lines on the surface of catheter that show distances to half centimeters. The catheter has a sliding guide fixed at external cervical os. Correct position of the catheter is replaced guide on external os, and guide's endpoint is on internal cervical os. In relation to the internal os was verified on the scan. If required, re-fixation of sliding guide to external os will also be performed. After loading embryos, the length between the guide and the end of catheter will be noted.
Data collection protocol: We will obtain data on pregnancy outcome from the hospital computerized records or the records from family practitioners of the women. We will record birth weeks as major outcome. The obstetric records of all patients will be examined to determine whether any exclusion criteria are present.
연구 유형
단계
- 해당 없음
연락처 및 위치
연구 장소
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Kayseri, 칠면조
- Acıbadem Kayseri Hospital
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참여기준
자격 기준
공부할 수 있는 나이
- 어린이
- 성인
- 고령자
건강한 자원 봉사자를 받아들입니다
연구 대상 성별
설명
Inclusion Criteria:
- Pregnant women resulting from ICSI treatment at assisted reproduction center, Acibadem Kayseri Hospital, Turkey.
Exclusion Criteria:
- missing outcome data, multiple pregnancies, miscarriages during the first trimester, cigarette smoking, PTD history, progesterone use after 12 weeks, cerclage performed, termination (iatrogenic delivery) and PTDs due to preeclampsia
공부 계획
연구는 어떻게 설계됩니까?
디자인 세부사항
- 주 목적: 상영
무기와 개입
참가자 그룹 / 팔 |
개입 / 치료 |
|---|---|
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다른: Preterm Delivery
Preterm Delivery: Births before the completion of 37 weeks' of gestation.
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다른: Term Delivery
Term Delivery: Births after the completion of 37 weeks' of gestation.
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연구는 무엇을 측정합니까?
주요 결과 측정
결과 측정 |
기간 |
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Delivery week
기간: Due to the pregnancy period ( maximum 9 months)
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Due to the pregnancy period ( maximum 9 months)
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공동 작업자 및 조사자
연구 기록 날짜
연구 주요 날짜
연구 시작
기본 완료 (실제)
연구 완료 (실제)
연구 등록 날짜
최초 제출
QC 기준을 충족하는 최초 제출
처음 게시됨 (추정)
연구 기록 업데이트
마지막 업데이트 게시됨 (추정)
QC 기준을 충족하는 마지막 업데이트 제출
마지막으로 확인됨
추가 정보
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