SIS Versus Office Hysteroscopy for Uterine Cavity Evaluation Prior to IVF

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University of North Carolina (UNC)






Device: Office hysteroscopy

Study type


Funder types




Details and patient eligibility


Saline infusion sonography (SIS) and hysteroscopy are commonly employed methods for uterine cavity evaluation. While hysteroscopy is regarded as the gold standard for diagnosis of intra-uterine pathology, it is not often used as an initial screening tool because of provider concerns about in-office tolerability, operating room costs, and use of anesthesia. The investigators aim to compare SIS and office hysteroscopy with respect to patient and provider satisfaction. Additionally, the investigators aim to assess the capability of office-based hysteroscopy to manage intra-uterine pathology at the time of diagnosis and reduce delays and supernumerary procedures.

Full description

Saline infusion sonography (SIS) and hysteroscopy are commonly employed methods for uterine cavity evaluation. SIS is often performed as a screening tool in the office for uterine evaluation since it is straight-forward to perform, well-tolerated has low overhead cost. If uterine pathology is suspected on SIS, subsequent hysteroscopy is typically performed in the operating room. Hysteroscopy remains the gold standard for diagnosis of intra-uterine pathology and offers the opportunity for intervention at time of diagnosis, but often is not used as the initial screening tool because of provider concerns about in-office tolerability, equipment cost and maintenance. Technology advancements, however, has introduced an affordable, disposable, small caliber hysteroscopes with an operative channel to make it possible for this type of assessment to be performed in the office setting with the addition of a 'see and treat' modality. If used to perform initial uterine cavity evaluation, hysteroscopy may offer expedited diagnosis, treatment, and avoidance of general anesthesia. If superior specificity is demonstrated, it may also lower the false positive rate, preventing unnecessary delays to a patient's projected treatment plan, and unnecessary exposure to anesthesia risks. To date, no randomized control trials have compared the satisfaction of patients and providers to saline infusion sonography versus office hysteroscopy without anesthesia in initial cavity evaluation with the ability to immediately address intra-uterine pathology.


100 patients




18 to 50 years old


Accepts Healthy Volunteers

Inclusion criteria

  • Women aged 18 - 50
  • Patients undergoing routine cavity evaluation for planned in vitro-fertilization cycles

Exclusion criteria

  • Clinical or radiologic suspicion of intrauterine pathology including myomas, severe intrauterine adhesions or retained products of conception
  • Those with medical criteria not suitable office hysteroscopy due to requirement of advanced tools or preparation not available in the office such as history of bleeding disorder or medical co-morbidity

Trial design

Primary purpose




Interventional model

Parallel Assignment


None (Open label)

100 participants in 2 patient groups

Office Hysteroscopy
Active Comparator group
Use of office hysteroscope with operative port to evaluate uterine cavity, and potentially treat minor abnormalities within the same procedure with hysteroscopic graspers. This involve inserting the hysteroscope through the cervix and instillation of saline for a direct look at the cavity.
Device: Office hysteroscopy
Saline Infusion Sonography (SIS)
No Intervention group
This is our institution's current first line approach for screening evaluation of the uterine cavity. If not enrolled in the study, patients are required to do this to move forward with embryo transfer. It involves instillation of saline into the uterus via a small catheter with simultaneous imaging with pelvic ultrasound.

Trial documents

Trial contacts and locations



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