Comparative Study Between Operative Hysteroscopy Versus the Ultrasound Guided Vacuum Aspiration Versus the Blind Vacuum Aspiration for the Treatment of the Missed Abortion
试验速览
- 阶段
- 不适用
- 入组人数
- 300
- 试验地点
- 1
- 主要终点
- pregnancy rate after evacuation
研究概览
简要总结
The intervention to be evaluated are operative hysteroscopy(group A) and ultrasound guided aspiration(group C) and blinded vacuum aspiration(group B).
For all surgical procedures , surgical antibiotics prophylaxis, misoprostol to dilate cervix, and anti adhesion barrier gel will be used. The evacuated retention products will be sent for pathological examination.
Group A: Operative Hystroscopy:
The procedure will be performed under general anaesthesia with the patient in lithotomy position. the cervix is grasped with pozzi forceps and dilated up to hegar 9 to facilitate insertion of the hysteroscopy. The uterine cavity will be distended with saline or glycine, with a maximum irrigation pressure of 110mmHg. The retained products will be resected from top to bottom with surgical resector without electric power. The use of forceps or curettes to facilitate the removal of material is permitted. .
Group B:blinded vacuum aspiration of gestational contents:
The women were allowed to empty their urinary bladder before induction of anesthesia, After positioning the patient appropriately on the operating table, bimanual pelvic examination was performed under anesthesia to assess the axis and the size of the uterus. A Sim's speculum was inserted into the vagina; the cervix was visualized and grasped using the Vulsellum forceps. The cervical canal was dilated gradually with Hegar dilators up to the size corresponding to the weeks of gestation. The uterine cavity was evacuated using a plastic cannula attached to an electric suction apparatus. Negative pressure of 75 mmHg was used. The aspirate was examined to confirm the presence of products of conception. The completeness of the evacuation was checked by gentle sharp curettage and final suctioning at the end of procedure.
Group C: Ultrasound guided aspiration curettage :
same as group B but guided with ultrasound
详细描述
The intervention to be evaluated are operative hysteroscopy(group A) and ultrasound guided aspiration(group C) and blinded vacuum aspiration(group B).these procedures are routinely performed in the obstetrics and gynecology department for various indications. For all surgical procedures , surgical antibiotics prophylaxis, misoprostol to dilate cervix, and anti adhesion barrier gel will be used. The evacuated retention products will be sent for pathological examination. RH negative women will receive prophylaxis to prevent RH alloimmunization.
Group A: Operative Hystroscopy:
The procedure will be performed by a gynecological surgeon, under general anaesthesia with the patient in lithotomy position. Antibiotic prophylaxis may be administered, the cervix is grasped with pozzi forceps and dilated up to hegar 9 to facilitate insertion of the hysteroscopy. The uterine cavity will be distended with saline or glycine, depending on the polarity of the resection system.with a maximum irrigation pressure of 110mmHg. The retained products will be resected from top to bottom with surgical resector without electric power. The use of forceps or curettes to facilitate the removal of material is permitted. If active bleeding occurs , elective coagulation by hystroscope is done to stop intrauterine bleeding. The deficit of distending media should be calculated at the end of procedure.
Group B:blinded vacuum aspiration of gestational contents:
The women were allowed to empty their urinary bladder before induction of anesthesia, but catheterization was not performed. After positioning the patient appropriately on the operating table, bimanual pelvic examination was performed under anesthesia to assess the axis and the size of the uterus. A Sim's speculum was inserted into the vagina; the cervix was visualized and grasped using the Vulsellum forceps. The cervical canal was dilated gradually with Hegar dilators up to the size corresponding to the weeks of gestation. The uterine cavity was evacuated using a plastic cannula attached to an electric suction apparatus. Negative pressure of 75 mmHg was used. The aspirate was examined to confirm the presence of products of conception. The completeness of the evacuation was checked by gentle sharp curettage and final suctioning at the end of procedure.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Treatment
- 盲法
- Triple (Participant, Investigator, Outcomes Assessor)
入排标准
- 年龄范围
- 18 Years 至 39 Years（Adult）
- 性别
- Female
- 接受健康志愿者
- 否
入选标准
- •Women in the fertility perioddiagnosed with missed abortion in the first trimester < 14 wks of gestation.
- •The pregnancy concerned should correspond to a planned or wanted baby. Diagnosis of missed abortion by transvaginal ultrasound showing sgestational sac with no cardiac pulsations.
排除标准
- •• Other type of abortion.
- •Known uterine malformation.
- •History of surgical intervention done in the uterus or uterine cavity.
- •Moderate to sever vaginal bleeding needing rapid surgical intervention.
- •Presence of IUD
- •Current pregnancy obtained by IVF cycle
- •Extrauterine pregnancy
研究组 & 干预措施
hystroscopy
The procedure will be performed by a gynecological surgeon, under general anaesthesia with the patient in lithotomy position. Antibiotic prophylaxis may be administered, the cervix is grasped with pozzi forceps and dilated up to hegar 9 to facilitate insertion of the hysteroscopy. The uterine cavity will be distended with saline or glycine, depending on the polarity of the resection system.with a maximum irrigation pressure of 110mmHg. The retained products will be resected from top to bottom with surgical resector without electric power. The use of forceps or curettes to facilitate the removal of material is permitted. If active bleeding occurs , elective coagulation by hystroscope is done to stop intrauterine bleeding. The deficit of distending media should be calculated at the end of procedure.
干预措施: hystroscopy (Device)
ultrasound guided aspiration
The transducer was held on the abdomen to obtain a longitudinal image of the uterus and cervix and provide the surgeon with a visual reference of the gestational sac, cervical canal and any instruments passed into the uterus.The progress of the operation was continuously monitored as the uterine contents were evacuated under visual control. It was possible to keep the dilators and the suction cannula under constant view by slightly tilting the transducer as required. Advancement of any instrument was allowed only under direct ultrasound control.The completeness of the evacuation was confirmed by the scan in these cases.
干预措施: ultrasound (Device)
ultrasound guided aspiration
The transducer was held on the abdomen to obtain a longitudinal image of the uterus and cervix and provide the surgeon with a visual reference of the gestational sac, cervical canal and any instruments passed into the uterus.The progress of the operation was continuously monitored as the uterine contents were evacuated under visual control. It was possible to keep the dilators and the suction cannula under constant view by slightly tilting the transducer as required. Advancement of any instrument was allowed only under direct ultrasound control.The completeness of the evacuation was confirmed by the scan in these cases.
干预措施: Aspiration (Procedure)
blind aspiration
The women were allowed to empty their urinary bladder before induction of anesthesia, but catheterization was not performed. After positioning the patient appropriately on the operating table, bimanual pelvic examination was performed under anesthesia to assess the axis and the size of the uterus. A Sim's speculum was inserted into the vagina; the cervix was visualized and grasped using the Vulsellum forceps. The cervical canal was dilated gradually with Hegar dilators up to the size corresponding to the weeks of gestation. The uterine cavity was evacuated using a plastic cannula attached to an electric suction apparatus. Negative pressure of 75 mmHg was used. The aspirate was examined to confirm the presence of products of conception. The completeness of the evacuation was checked by gentle sharp curettage and final suctioning at the end of procedure.
干预措施: Aspiration (Procedure)
结局指标
主要结局
pregnancy rate after evacuation
时间窗: 12 months after procedure
duration needed to achieve pregnancy after evacuation provided non use of contraceptive methods
次要结局
未报告次要终点
研究者
Ahmed Maged
Assistant professor
Cairo University