**2.8 Results - Constrictor inflatable periurethral®**

The results obtained in 2007, four patients had neurogenic functional implants. Were continents and performed intermittent catheterization. In the group of prostatectomy patients, 15 had functional implants, and 2 performed intermittent catheterization. In three patients, the valve implant some leakage of saline, after activating the device, which was easily solved by changing the valves. Only one implant fail to function properly and was removed. Other two implants were removed early due to erosion, probably caused by

Follow-up ranged from 27 to 132 months (mean 53.4 +- 21.4 months). There was a significant reduction in pad count from 4.0 +- 0.9 to 0.62 +- 1.07 diapers per day (*P<*0.001) leading to continence in 90%. Twenty patients (50%) were completely dry, and 16 (40%) required 1 pad per day. There was a significant reduction on the impact of incontinence decreasing from 5.0 +- 0.7 to 1.4 +- 0.93 (*P* \_0.001) in a visual analogue scale (VAS). Surgical revision rate was 20%. Preoperative urodynamics was useful to identify sphincter deficiency. Except by a tendency of worse results in patients with reduced bladder compliance (RBC), other urodynamic parameters did not correlate with a worse surgical outcome. (Trigo Rocha F, et

Fig. 8. Continence rates after AUS implantation in patients with PRPUI (Modified from

The main complications related to the AMS 800 are: Revision rate of the device in 5 years (26%), malfunctioning device (8%), pain/discomfort (6,9%), slow healing of wounds (5,7%), bladder spasms (2,3%), activation difficult (2,3%), displacement of the device (3,5%), erosion tissue (2,3%), disabling difficult (1,1%), infection (2,3%), recurring incontinence (3,5%), fistula formation (1,1%), hematoma (1,1%), swelling (2,3%), hydrocele (1,1%), erosion tissue/infection (1,1%), patient dissatisfaction (1,1%), incontinence position (1,1%), wound infection (1,1%), urinary retention (1,1%) (Shellock F, et al. 1988; Litwiller SE, et al. 1996)

The results obtained in 2007, four patients had neurogenic functional implants. Were continents and performed intermittent catheterization. In the group of prostatectomy patients, 15 had functional implants, and 2 performed intermittent catheterization. In three patients, the valve implant some leakage of saline, after activating the device, which was easily solved by changing the valves. Only one implant fail to function properly and was removed. Other two implants were removed early due to erosion, probably caused by

**2.7 Results – AMS 800®**

Trigo Rocha F, et al. 2008)

**2.8 Results - Constrictor inflatable periurethral®**

al. 2008).

iatrogenic complications that occurred during dissection of the bulbar urethra. Thus, 19 patients with functional implants represented a success rate of 86%, during an mean follow up of 28 months (6 to 50 months). (Schiavini et al, 2007).

In the update made in 2010, and Schiavini & Resende Jr and colleagues, 30 patients were evaluated and followed up for a mean of 42.1 months (range, 13-72). In 22 patients (73.3%), the implanted devices were functional, 16 patients (53,3%) were completely dry, and 06 (20%) required 1 pad per day; 20 voided spontaneously, and 2 performed intermittent catheterization. Among them, 7 patients were submitted for ambulatory review—within 2 weeks of the activation of the device—to increase the occlusive static pressure of the cuff (range of volume added, 0.4-1.7 mL); and 4 were submitted for surgical exchange of the valve because of leakage of saline solution. Despite these occurrences, all of these patients claimed they were very satisfied with the results.

The main complications were urethral cuff erosion in 4 patients (13.3%) and infection in 3 patients (10%), leading in these cases to early and complete removal of the devices. An eighth patient remained incontinent after the device reactivation because of detrusor hyperreflexia. In this series, there was no occurrence of any other major complications.
