SHG stands for Sonohysterography, which is a procedure used to evaluate the uterine cavity. It involves the use of ultrasound along with saline infusion.
Here’s how SHG is typically performed and its role in fertility treatments:
1. Procedure:
A small catheter is inserted through the cervix into the uterus. Saline (sterile salt solution) is then injected through the catheter, filling the uterine cavity. This expansion allows the ultrasound transducer to provide detailed images of the inside of the uterus.
2. Purpose:
- Assessment of Uterine Abnormalities: SHG helps detect abnormalities such as polyps, fibroids, adhesions (scar tissue), or congenital malformations inside the uterus that may affect fertility or increase the risk of miscarriage.
- Evaluation before Fertility Treatments: Before procedures like IVF, SHG is often performed to ensure the uterus is suitable for embryo transfer and pregnancy.
- Investigation of Recurrent Miscarriages: It can be used to investigate the cause of recurrent miscarriages by assessing uterine abnormalities that may contribute to pregnancy loss.
3. Advantages:
SHG is typically well-tolerated, minimally invasive, and does not require anesthesia. It provides real-time images that can be immediately interpreted by the healthcare provider.
4. Limitations:
While SHG is effective for evaluating the uterine cavity, it may not provide information about conditions outside the cavity such as tubal factors or pelvic adhesions.
In summary, Sonohysterography (SHG) is a valuable diagnostic tool in fertility treatments, particularly for assessing uterine health and planning appropriate management strategies.