Lever pessaries
In addition to the more commonly used support and space-filling pessaries, there is a third kind that is rarely used in current practice: the lever pessaries. These pessaries—the Hodge, the Smith, and the Risser—are rectangles made of inert plastic that are folded into 3 planes to facilitate positioning in the vagina. The narrower of the 2 shorter ends of the folded rectangle is placed behind the cervix or at the vaginal apex while the other short end is placed behind the symphysis pubis.
Although sometimes used to correct POP in nonpregnant women, the lever pessary’s main purpose is to antivert a retroflexed uterus and to support the cervix and uterus in cases of prolapse during pregnancy or impending cervical incompetence.
The 3 lever pessaries differ in terms of whether the narrow ends of the pessary are straight or curved and wider or narrower.
How to choose the right pessary for your patient
If a patient’s POP or urinary incontinence symptoms would best be treated with a pessary, the next step is to select the pessary type and size best suited for that patient’s needs and the size that should be prescribed. While there is controversy among experts as to whether or not certain pessaries are better than others for different indications,12 most gynecologists and urogynecologists who use pessaries on a regular basis agree on the following:
1. Support pessaries will meet the needs of most women with moderate POP and/or SUI. These include the ring pessary with or without the support shield and with or without an incontinence knob. A support pessary is the go-to pessary in most cases. Most women find it comfortable to wear, it is easy to put in and take out, and sexual intercourse is possible with the pessary in place.
2. The specific degree of a patient’s prolapse and/or incontinence dictates whether or not to prescribe the support shield feature or the incontinence knob with a ring pessary. The shield helps support a prolapsed cervix and uterus when they are present.5,13 The knob is a useful feature if incontinence is a prominent symptom.
3. The Gellhorn pessary is usually the first choice for more severe prolapse. As long as there is some degree of posterior perineal support, this pessary does an excellent job of correcting even severe prolapse whether of a cervix and uterus or of vaginal walls and apex. It does require the patient to have some practice and dexterity for inserting and removing it on her own; individuals not comfortable or physically able to do so will need to have the pessary removed and cleaned by a clinician on a regular basis in the office. (Part 2 of this article will discuss pessary cleansing intervals).
4. Space-filling pessaries (such as the cube and donut) are useful when there is a severe degree of prolapse and insufficient perineal support to maintain a Gellhorn pessary. In practice, they are generally used less frequently—which is unfortunate, as they are a potentially useful solution for older women with severe prolapse who might not be candidates for surgical repair. As mentioned, both the cube and donut pessaries require more frequent removal for cleaning.
5. In unusual cases, the use of 2 pessaries simultaneously may resolve a difficult problem, such as when a pessary is the only option for treatment, the prolapse is severe, or it is impossible to find a pessary that resists being expelled from the vagina.14 A space-filling pessary in the most cephalad aspect of the vagina used in conjunction with a ring pessary with support shield below it can sometimes resolve even the worst cases of prolapse.
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