PubMed · 12722766
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Parviz K Amid. 2003. Strategy for e-PTFE separation.. https://doi.org/10.1007/s10029-002-0106-9
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PURPOSE: The combination of a neourethra and erection prosthesis in a single neophallus in the female-to-male transsexual remains a challenge. The outcome reported in the literature is disappointing. We report our experience with 35 patients. MATERIALS AND METHODS: Between August 1996 and December 2001, 35 patients underwent implantation surgery. A 1-piece hydraulic Dynaflex prosthesis (American Medical Systems, Minnetonka, Minnesota) was used in 10 patients, while a 3-piece hydraulic CXM and CX (American Medical Systems) prosthesis was placed in 9 and 16, respectively. The 1-piece model was withdrawn from the market in 1997. Thereafter a 3-piece prosthesis was implanted. RESULTS: Of 10 patients in the 1-piece group prosthesis implantation was uneventful in 8. In 2 patients with technical failure the prosthesis was replaced, including 1 in whom the new prosthesis was removed due to infection and successfully replaced by a 3-piece prosthesis. To date at a mean followup of 3.5 years 9 patients have a 1-piece hydraulic prosthesis in place. In the 3-piece prosthesis group of 25 patients implantation was uneventful in 20. In 1 patient infection and partial necrosis of the neophallus developed, 2 had infection, in 1 a cylinder perforated the tip of the phallus and in 1 technical failure occurred. Of the latter 4 patients the prosthesis was replaced successfully in 2 patients, while the other 2 are on the waiting list. The patient with partial necrosis of the phallus is no longer a candidate for an erection prosthesis. To date at a mean followup of 1.8 years 23 patients have a 3-piece hydraulic prosthesis in place. A single patient in the 1-piece group has a 3-piece CX prosthesis. CONCLUSIONS: Good results were observed after implantation of the Dynaflex prosthesis in patients who underwent total phalloplasty. This model is no longer available today. For the more complex 3-piece CX and CXM prostheses implantation results are comparable to those of the 1-piece model.
BACKGROUND: Implantation of the HeartMate Implanted Pneumatic or Vented Electric Ventricular Assist Device requires that the pump be implanted either in the peritoneal cavity or in the abdominal wall. Both sites have been problematic. METHODS: We describe a new technique in which an intraperitoneal pocket is created, using Gore-Tex Dual Mesh Plus Biomaterial with Holes, to contain the ventricular assist device. This shields the ventricular assist device from the peritoneal contents and avoids abdominal wall dissection. Thirty consecutive patients who underwent implantation using this technique were compared with 16 patients who underwent implantation before this technique was in use. RESULTS: Thirty consecutive patients underwent implantation, and 2 of those patients underwent re-implantation because of device failure (16/30 HeartMate Implanted Pneumatic, 14/30 HeartMate Vented Electric, and 2/14 HeartMate Vented Electric replaced with the HeartMate Implanted Pneumatic). Twenty-five patients have undergone explantation. Pocket infections in patients who have had implanted devices for >1 month decreased from 4 of 13 before the pockets were used to 1 of 25 with the intraperitoneal pockets (Fisher's exact test p = 0.038). Two hernia repairs were required after explantation when the biomaterial pocket was used. A decrease in return to surgery for bleeding was noted after the pocket was used (7/16 without the pocket and 3/32 with the pocket; Fisher's exact test, p = 0.010). CONCLUSIONS: Bleeding complications and pocket infections decreased in this early experience. Further study is necessary to confirm the apparent decrease in complication rate by using this new technique in this small cohort of patients.