New onset pain post−prolapse surgery with TOT sling placement
Dr. Levy: For this case, let's consider a 42-year-old woman (P3) who is 6 months post− vaginal hysterectomy. The surgery included ovarian preservation combined with anterior and posterior repair for prolapse as well as apical uterosacral ligament suspension for stage 2 uterovaginal prolapse. A transobturator sling was used.
Extensive preop evaluation was performed, with confirmed symptomatic prolapse. She had no stress incontinence symptoms but did have confirmed occult stress incontinence.
Surgery was uneventful. She resumed intercourse at 8 weeks, but she now has pain with both initial entry and deep penetration. Lubricants and changes in position have not helped. She is in a stable relationship with her husband of 17 years, and she is worried that the sling mesh might be the culprit. On exam, she has no atrophy, pH is 4.5, vaginal length is 8 cm, and there is no prolapse. There is no mesh exposure noted, although she reports slight tenderness with palpation of the right sling arm beneath the right pubic bone.
Dr. Iglesia, what are the patient history questions important to ask here?
Dr. Iglesia: This is not an uncommon scenario--elective surgical correction of occult or latent stress incontinence after surgical correction for pelvic organ prolapse. Now this patient here has no more prolapse complaints; however, she has a new symptom. There are many different causes of dyspareunia; we cannot just assume it is the sling mesh (although with all the legal representation advertisements for those who have had mesh placed, it can certainly be at the top of the patient's mind, causing anxiety and fear).
Multiple trials have looked at prophylactic surgery for incontinence at the time of prolapse repairs. This woman happened to be one of those patients who did not have incontinence symptoms, and they put a sling in. A recent large trial examined women with vaginal prolapse who underwent hysterectomy and suspension.6 (They compared 2 different suspensions.) What is interesting is that 25% of women with prolapse do have baseline pain. However, at 24 months, de novo pain can occur in 10% of women--just from the apical suspension. So, here, it could be the prolapse suspension. Or, in terms of the transobturator sling, long-term data do tell us that the de novo dyspareunia rate ranges on the magnitude of 1% to 9%.7 What is important here is figuring out the cause of the dyspareunia.
Dr. Levy: One of the important points you raised already was that 25% of these women have preoperative pain. So figuring out what her functioning was before surgery and incorporating that into our assessment postop would be pretty important I would think.
Dr. Iglesia: Yes, you need to understand what her typical encounter was before the surgery and how things have changed now that the prolapse is not in the way. Changes obviously can occur with scar tissue, which over time will improve. If she is perimenopausal and starts to get epithelial changes, we can fix that. The question then becomes, "Is the pain emanating from the mesh?"
When examining this patient, it is not uncommon for me to be able to feel "banjo" strings if the mesh is too tight or close to the surface. It is not exposed but it's palpable, and the patient may feel a ridge during penetration. You can ask the patient if pain occurs with different penetration positions. In addition, explore associated neurologic symptoms (numbness or muscle pain in the thigh).
Dr. Kingsberg: There were 2 different sources of pain--on initial entry and at deep penetration. You want to make sure you address both. Importantly, did one precede the other? For instance, if women have pain with penetration they can then end up with an arousal disorder (the length of the vagina cannot increase as much as it might otherwise) and dystonia secondary to the pain with penetration. The timing of the pain--did it all happen at the same time, or did she start out with pain at one point and did it move to something else--is another critical piece of the history.
Dr. Iglesia: It does take a detailed history and physical exam to identify myofascial trigger points. In this case there seems to be pinpoint tenderness directly on the part of the mesh that is not exposed on the right. There are people who feel you should remove the whole mesh, including the arms. Others feel, okay, we can work on these trigger points, with injections, physical therapy, extra lubrication, and neuromodulatory medications. Only then would they think about potentially excising the sling or a portion thereof.
Dr. Krychman: Keep in mind that, even if you do remove the sling, her pain may not subside, if it is secondary to an underlying issue. Because of media sensationalism, she could be focusing on the sling. It is important to set realistic expectations. I often see vulvar pathology or even provoked vestibulodynia that can present with a deep dyspareunia. The concept of collision dyspareunia or introital discomfort or pain on insertion has far reaching implications. We need to look at the patient in totality, ruling out underlying issues related to the bladder, even the colon.