Validation of a miniaturized handheld arterial pressure monitor for guiding full and partial REBOA use during resuscitation.

PURPOSE: Resuscitative endovascular balloon occlusion of the aorta (REBOA) is a well-validated method for the control of noncompressible truncal hemorrhage. In lower resource or battlefield settings, the need for arterial line setup and monitoring is problematic and potentially prohibitive. We sought to evaluate the accuracy and precision of a miniaturized portable device (Centurion COMPASS®) versus standard arterial pressure monitoring using standard ER-REBOA and partial REBOA (pREBOA) as a high-fidelity and space-/time-conserving alternative. METHODS: A total of 40 swine underwent a four-phase validation/precision study (each phase using five ER-REBOAs and five pREBOAs). Phases I/II evaluated accuracy with full and pREBOA in uninjured animals. Phases III/IV duplicated the previous phases but in a severe hemorrhagic shock model. Carotid and femoral pressures were monitored with both intra-arterial pressure systems and the COMPASS® device. The vascular flow was measured by aortic flow probes. Correlation and Bland-Altman analysis were performed. RESULTS: There was a strong correlation in accuracy testing of proximal and distal COMPASS® devices compared to standard intra-arterial pressure monitoring (r = 0.94, 0.8; p < 0.005) as well as during precision testing (r = 0.98, 0.89 p < 0.005) in the uninjured phases. Similar accuracy and reliability were demonstrated in hemorrhagic shock, with a strong correlation for the proximal and distal COMPASS® devices (r = 0.98, 0.97; p < 0.005), as well as during precision testing (r = 0.99, 0.95; p < 0.005) in both full and pREBOA scenarios. Bland-Altman analysis showed extremely low bias between the COMPASS® and arterial line for both proximal (bias = 1.9) and distal (bias = 0.8) pressure measurements. CONCLUSION: The COMPASS® provides accurate and precise pressure measurements during standard and partial REBOA in both uninjured and shock conditions. This device may help extend and enhance capability in any low-resource/battlefield settings, or even eliminate the need for standard intra-arterial invasive pressure monitoring and external setup.

Robotic removal of eroded vaginal mesh into the bladder.

Vaginal mesh erosion into the bladder after midurethral sling procedure or cystocele repair is uncommon, with only a few cases having been reported in the literature. The ideal surgical management is still controversial. Current options for removal of eroded mesh include: endoscopic, transvaginal or abdominal (either open or laparoscopic) approaches. We, herein, present the first case of robotic removal of a large eroded vaginal mesh into the bladder and discuss potential benefits and limitations of the technique.

Bowel vaginoplasty in children: a retrospective review.

BACKGROUND/PURPOSE: There are numerous congenital genitourinary conditions that result in vaginal agenesis or atresia. Reconstruction presents a challenge to the surgeon who wishes long-term functional and cosmetic results with low morbidity. Historically, reconstruction has involved the use of skin grafts and nonoperative methods with less than ideal results. The preference of the authors is to use intestinal segments for creating the neovagina and herein review their experience with this procedure. METHODS: The authors identified 10 children who underwent vaginal construction with intestinal segments from 1996 to the present. Patient charts were reviewed for etiology, procedure performed, operative and postoperative complications, and follow-up. RESULTS: Average age at surgery was 10.9 years (1 to 29 years). Of the 10 children, 3 required vaginal construction for cloacal extrophy, and 7 had vaginal atresia of various etiology. Sigmoid colon was utilized in 6 cases, ileum in 2, and, in 2 patients with high imperforate anus, their mucous fistula segment was used to create the vagina. Mean follow-up was 24 months. Complications included a right ureteral injury necessitating placement of an indwelling ureteral stent and a girl presenting with cyclic pelvic pain who required reanastomosis of the neovagina to the uterus for an obstructed cervical os. CONCLUSIONS: Intestinal segments can be used successfully for creation of a neovagina with exceptional cosmetic results and an acceptable complication rate. In appropriate patients, the mucous fistula can be used to create the vagina obviating the need for a bowel anastomosis.

Efficacy of shunt surgery for refractory low flow priapism: a report on the incidence of failed detumescence and erectile dysfunction.

PURPOSE: The reported success rate for surgical cavernosa-to-spongiosum shunts in patients with refractory low flow priapism is variable and yet it is reported to be as high as 100% in terms of achieving detumescence. The long-term potency rate after the introduction of the shunt procedure is also as high as 50%. We reviewed the efficacy of various shunts in terms of achieving detumescence and we clarified the rate of erectile dysfunction at long-term followup. MATERIALS AND METHODS: Patients were included in the analysis if they had painful low flow priapism more than 4 hours in duration that was refractory to conservative management, ultimately requiring a surgical shunt. Data, including etiology, duration and initial treatment measures, were retrospectively compiled in the last 12 years and the type of surgical shunts performed were recorded. Followup erectile function was assessed by clinical notes and a telephone survey using the International Index of Erectile Function. RESULTS: Of the 28 consecutive patients included in the study 13 (46.4%) required more than 1 operation for failed detumesence, of whom 12 (92.3%) initially underwent a Winter shunt. Only 2 of the 20 men (10%) with available followup reported preservation of pre-morbid erectile function. Three men (15%) achieved partial erection without the assistance of oral or injectable agents. CONCLUSIONS: In contrast to previously reported success rates, approximately 50% of our patients required reoperation for failed detumescence following a cavernosa-to-spongiosum shunt. In our experience the Winter shunt was the least successful operation, whereas reoperation was uncommonly required following an Al-Ghorab or Quackels shunt. As many as 90% of our patients had erectile dysfunction at followup.

Orthotopic neobladder following radical cystectomy in patients with high perioperative risk and co-morbid medical conditions.

PURPOSE: A significant number of patients requiring radical cystectomy for bladder cancer have substantial co-morbidity. Nonetheless, these patients often prefer orthotopic neobladder reconstruction to avoid an abdominal stoma. We performed a retrospective study to determine perioperative morbidity in this group of patients. MATERIALS AND METHODS: We used the American Society of Anesthesiologists physical status classification to assign perioperative risk. Of 250 patients undergoing orthotopic neobladder reconstruction after radical cystectomy during a 5-year period we identified 84 with an American Society of Anesthesiologists score of 3 or greater. Charts were available for review for all patients and none was lost to followup. RESULTS: Median operative time (calculated from anesthesia ready time to completion of surgery and application of a dressing) was 256 minutes. In 14 patients (16.6%) transfusion of a median of 2 units of allogeneic blood was required. A total of 79 patients (94%) were transferred directly from the recovery room to the general urology floor without a need for postoperative cardiac monitoring. Median hospital stay was 7 days. One patient (1.1%) died on postopera-tive day 9 of a presumed pulmonary embolus after having been discharged home on postoperative day 6. Minor complications occurred in 16 patients (19%). Only 1 patient required a return to the operating room for endoscopic removal of a retained stent fragment. CONCLUSIONS: In experienced hands radical cystectomy and orthotopic neobladder can be offered to patients with co-morbid conditions. Expeditious performance of the surgical procedure, minimization of blood loss, restricting the surgical incision to an infraumbilical location, and avoidance of intraoperative complications all contribute to decreasing morbidity and mortality. Although orthotopic reconstruction is more complex than performance of an ileal conduit, there is no apparent increase in perioperative morbidity or mortality. Therefore, orthotopic reconstruction can be offered to patients who want to avoid an abdominal stoma even in the face of significant co-morbid conditions.