Biomedical subjects

B Shekarriz

Publications and source records attributed to B Shekarriz.

At least 19 recordsLinked to original sources

PubMed2001

Impact of preoperative serum PSA level from 0 to 10 ng/ml on pathological findings and disease-free survival after radical prostatectomy.

BACKGROUND: To determine the impact of various preoperative serum prostate specific antigen (PSA) levels in the range from 0.1 to 10 ng/ml on pathological stage and disease-free survival after radical prostatectomy. METHODS: We selected a cohort of 585 patients who underwent radical prostatectomy between 1991-1996 for clinically localized prostate cancer and presented with preoperative serum PSA levels from 0.1 to 10 ng/ml. RESULTS: Pathological organ-confined disease was present in 57.6% of patients. The rate of organ-confined disease decreased from an average of 85% for patients with a PSA value < 2 ng/ml, to 46.8% for patients with a PSA value > 7 ng/ml. We found statistically significant correlations between preoperative serum PSA level and overall pathological stage (P = 0.001), pathologically organ-confined disease (P = 0.001), margin positive rates (P = 0.001), extra prostatic extension (P = 0.001), and seminal vesicle invasion (P = 0.001). The overall disease-free survival rate was 87%, with a median follow up of 42.4 months. Disease free survival was significantly better for patients with PSA up to 4 ng/ml (P = 0.005). CONCLUSIONS: Our data suggests that PSA detection programs should strive to detect prostate cancer in men before the PSA level rises above 7 ng/ml. In addition, since patients with a PSA level < 4 ng/ml had better disease-free survival rates than those with a PSA level between 4.1-10 ng/ml, eliminating an arbitrary cutoff of 4 ng/ml, may lead to improved disease-free survival.

Adult↗

PubMed2001

Laparoscopic nephrectomy and autotransplantation for severe iatrogenic ureteral injuries.

OBJECTIVES: To evaluate the efficacy of laparoscopic nephrectomy with autotransplantation in cases of severe proximal ureteral damage. Many patients with complex proximal ureteral injuries have good functional renal parenchyma and wish to salvage their kidney. Autotransplantation is a viable alternative to nephrectomy in these frustrating situations. METHODS: Two patients, aged 32 and 36 years, underwent laparoscopic nephrectomy and autotransplantation for treatment of severe proximal ureteral injuries. The injuries included a ureteropelvic junction avulsion and a proximal ureteral avulsion, respectively. Both patients had good functional renal parenchyma. A transperitoneal laparoscopic approach was used, and the kidney was removed by way of a Gibson incision. RESULTS: The procedures were successful, with immediate return of renal function in both patients. A pyeloureterostomy to the native distal ipsilateral ureter was required in one and a direct ureterovesical anastomosis was performed in the other. In the 2 patients, the warm ischemia time was 4.5 and 4 minutes, the transplant operative time 175 and 150 minutes, and the estimated blood loss 150 and 75 mL, respectively. No intraoperative complications occurred. At follow-up, the kidneys were functional, and the patients had returned to their normal activity. CONCLUSIONS: Laparoscopic nephrectomy with autotransplantation is an excellent alternative to nephrectomy or bowel interposition in patients with proximal ureteral loss, irrespective of the contralateral renal function. This procedure is associated with acceptable morbidity and preserves the renal function. This approach is desirable in those patients who have had complications from other surgical procedures and are otherwise facing the loss of a normally functioning kidney.

Adult↗

PubMed2001

Radially expanding laparoscopic access for renal/adrenal surgery.

OBJECTIVES: To use a radially expanding system (Step) and a modified port location for intra-abdominal access to decrease the access-related complications in renal and adrenal surgery. Access-related complications during laparoscopic renal surgery are frustrating and are more common in patients with previous abdominal surgery and associated adhesions. METHODS: Laparoscopic upper tract procedures were performed in 62 patients using radially expanding trocars, and the results were reviewed with regard to access, port placement, and associated complications. For initial access, a Veress needle was placed subcostally in the midclavicular line. An expandable mesh sleeve trocar was used for trocar insertion after a pneumoperitoneum was established. A blunt-tipped fascial dilator was used to dilate to 10 or 12 mm. Additional ports were placed in an L shape (nephrectomy) or a subcostal configuration (adrenalectomy) under direct vision using the Step ports. RESULTS: Of 62 patients, 24 had had prior abdominal surgery. Open insertion of the mesh sleeve was necessary in 20%, of whom 60% had had prior abdominal surgery. In 9% of cases, the liver was punctured with the initial pass of the Veress needle. Only minimal bleeding from the injury site was noticed. The liver punctures did not require cauterization and did not result in conversion to an open procedure. At a mean follow-up of 12 months, no access-related complications or port-site hernias were noted. CONCLUSIONS: Placement of the initial access subcostally at the level of the midclavicular line helps to prevent visceral injury, especially in patients with previous abdominal surgery. The use of the radially expanding access system with the modification of port location allows safe and rapid laparoscopic access for upper urinary tract surgery. This trocar system is an excellent alternative to the standard laparoscopic trocars.

Adrenal Glands↗

PubMed2001

Salvage radical prostatectomy.

Although technically challenging, salvage prostatectomy for radiorecurrent prostate cancer is an effective option in carefully selected patients and offers the best chance for cure and long-term survival. Alternatively, cystoprostatectomy may be indicated in some patients who have a small capacity fibrotic bladder or intractable voiding symptoms related to radiation cystitis. Good long-term results can be expected in this patient group; however, exenterative surgery in patients with locally advanced disease is associated with comparably inferior results and should not be advocated. If cystectomy is necessary, orthotopic urinary diversion can be performed safely in young motivated patients who wish to maintain a better quality of life with associated morbidity. Although the higher rate of incontinence and impotence after salvage procedures may detract from the quality of life, the impact of these long-term complications on the patient's overall well-being is less than previously believed, and most patients are satisfied with their treatment outcome and adjust well to the circumstances, accepting some increased degree of morbidity. This observation emphasizes the value of careful preoperative counseling and the discussion of treatment options and outcomes, which also should incorporate quality of life issues.

Humans↗

PubMed2001

Intraoperative, perioperative, and long-term complications of radical prostatectomy.

With improved surgical technique and perioperative care, the intraoperative and early postoperative complications of radical prostatectomy have decreased over the last 2 decades. Incontinence and impotence are two of the most significant long-term complications related to this procedure. Although the wide range of incontinence and impotence rates reported has been attributed to multiple factors, including the method of data collection and patient selection, it is apparent that the surgeon's experience is a significant factor, and that lower long-term morbidity can be expected from centers with more experience with radical prostatectomies. The impact of long-term complications, including urinary and sexual dysfunction, on the quality of life may be less than previously reported and should be discussed with patients.

Erectile Dysfunction↗

PubMed2001

Correlation of unilateral urolithiasis with sleep posture.

PURPOSE: Recurrent stone formers commonly present with calculi on the same side and the etiology of recurrent unilateral urolithiasis is unclear. Despite comprehensive metabolic evaluations, many patients will not be readily categorized into a treatable group. Data from the literature support that sleep posture may result in alterations of renal hemodynamics. We investigate the correlation of sleep posture with unilateral urinary stone formation. MATERIALS AND METHODS: A prospective study of 110 patients with recurrent unilateral nephrolithiasis was conducted. A questionnaire was used to evaluate patient sleep posture. Right or left side down and rotisserie-like sleep postures were defined. The side of stone formation was correlated with sleep posture using chi-square test. RESULTS: Of the patients 93 slept consistently with 1 side in a dependent position and the side of stone was identical to the dependent sleep side in 76% (p = 0.008). The positive predictive values of right and left side down sleep posture for formation of ipsilateral calculi were 82% and 70%, respectively. CONCLUSIONS: Although the exact pathophysiology of the association between sleep posture and recurrent unilateral stone disease remains to be elucidated, sleep posture may alter renal hemodynamics during sleep and promote stone formation. This observation needs further investigation and should be factored into the evaluation and prevention of unilateral urinary stone disease.

Adult↗

PubMed2001

The laparoscopic cigarette sponge.

PURPOSE: Minor hemorrhage during laparoscopic procedures may obscure the operative field. We describe the use of an especially designed, 4 x 4 absorbent sponge for multiple laparoscopic applications. MATERIALS AND METHODS: The cigarette sponge, also known as the Kittner roll gauze, was routinely used for laparoscopic upper tract procedures. The sponge may be placed easily through ports 5 mm. or greater. RESULTS: The cigarette sponge was excellent for absorbing minor but bothersome bleeding, facilitating suction and blunt dissection, and assisting with retraction. CONCLUSIONS: This especially designed laparoscopic sponge dramatically eases laparoscopic procedures, especially for controlling bothersome hemorrhage and blunt dissection. It may decrease operative time and facilitate difficult laparoscopic procedures.

Hemostasis, Surgical↗

PubMed2001

Transperitoneal preperitoneal laparoscopic lumbar incisional herniorrhaphy.

PURPOSE: Flank incisions may be associated with flank hernias, which may be complicated by incarceration and strangulation. Furthermore, they may be the cause of significant patient dissatisfaction with the surgical outcome. To avoid an open surgical procedure with its associated morbidity for hernia repair we describe a novel laparoscopic technique for repairing flank hernias with minimal morbidity and an excellent outcome. MATERIALS AND METHODS: Three cases of flank hernia were managed by the transperitoneal preperitoneal laparoscopic approach using polypropylene mesh to repair the fascial defect. An initial transperitoneal approach helps to identify the limits of the hernia. A 2 to 3 cm. margin of overlying peritoneum is incised around the hernia margin. It is important not to dissect overlying bowel. The mesh is placed behind the peritoneal envelope and secured with hernia staples. RESULTS: All cases were managed successfully via laparoscopy. There were no intraoperative or postoperative complications. At a mean followup of 12 months cosmesis has been excellent and there have been no recurrences. CONCLUSIONS: We describe a minimally invasive, versatile technique for laparoscopic repair of flank incisional hernias with excellent functional and cosmetic results. This approach avoids the significant morbidity associated with open repair of incisional flank hernias.

Adult↗

PubMed2001

Laparoscopic nephrectomy for inflammatory renal conditions.

PURPOSE: Inflammatory and infectious renal conditions may result in severe perirenal fibrosis, making the laparoscopic approach challenging. The theoretical advantages of laparoscopy for managing inflammatory and infectious renal conditions have been questioned. We identified whether laparoscopy for inflammatory renal conditions is associated with higher morbidity than for other benign renal conditions. Furthermore, several technical modifications are discussed that may help to improve the outcome. MATERIALS AND METHODS: We retrospectively reviewed the records of all patients who underwent laparoscopic nephrectomy for inflammatory and infectious renal conditions between 1998 and 2000. The transperitoneal approach was used and specimens were removed after morcellation. Operative data were compared with those from a similar group of patients who underwent laparoscopic nephrectomy for other benign conditions. RESULTS: Laparoscopic nephrectomy done for inflammatory or infectious conditions in 12 cases and for other benign conditions in 9 matched cases was completed successfully in 10 (83%) and 9 (100%), respectively. In the inflammatory and benign groups mean blood loss plus or minus standard deviation was 155 +/- 163 and 59 +/- 23 ml. (p = 0.099), mean operative time was 284 +/- 126 and 226 +/- 62 minutes (p = 0.225), and mean postoperative hospital stay was 4.1 +/- 2 and 3 +/- 1 days (p = 0.157), respectively. CONCLUSIONS: Laparoscopic nephrectomy can be performed safely in most cases of inflammatory renal conditions. Although they were not statistically significant, a higher conversion rate and longer operative time should be expected. Early conversion may be required due to failure to progress. Similar advantages were observed in patients with inflammatory and other benign renal conditions via the laparoscopic approach.

Adult↗

PubMed2000

Impact of location and multifocality of positive surgical margins on disease-free survival following radical prostatectomy: a comparison between African-American and white men.

OBJECTIVES: Although the rate of positive surgical margins is higher in African-American men (AAM) than in white men (WM), the impact of this difference on survival is not clear. Furthermore, it is unknown whether there are racial differences in the distribution of the positive surgical margins after radical retropubic prostatectomy (RRP). We investigated the differences between AAM and WM in terms of the site and multifocality of the positive surgical margins and their effect on disease-free survival (DFS) following RRP. METHODS: Between January 1991 and December 1995, 493 patients (288 WM and 205 AAM) were treated with RRP as monotherapy. Positive surgical margins were observed in 179 patients (86 WM and 93 AAM). Patients were divided in two groups: group 1 = WM and group 2 = AAM. The incidence and location of the positive surgical margins and their correlation with DFS were determined and compared. RESULTS: Overall, AAM had a higher rate of positive surgical margins than WM (48% versus 33%, respectively, P = 0.001). There was no significant difference in the frequency of multifocality of the positive margins (P = 0.4). Positive surgical margins were located significantly more often at the base in AAM (P = 0.015); however, the location of the positive surgical margins did not impact on DFS between groups. In those with multifocal positive surgical margins, AAM had a worse DFS compared with WM (P = 0.03). CONCLUSIONS: Race is an independent prognostic factor for DFS in patients with positive surgical margins. There were no differences in DFS between WM and AAM based on the margin location. In WM, prognostic factors for DFS in those with positive surgical margins were preoperative serum prostate-specific antigen, Gleason score, and pathologic stage. Conversely, in AAM none of these parameters were significant predictors of failure.

Black or African American↗

PubMed2000

Surgical complications of bladder augmentation: comparison between various enterocystoplasties in 133 patients.

OBJECTIVES: Ileal and sigmoid augmentation are equally effective at increasing bladder capacity and compliance. Therefore, knowledge of the incidence of major complications, including perforation, small bowel obstruction (SBO), anastomotic complications, calculus formation, and indications for revision may be useful in choosing the ideal segment. We compared the complications of ileocystoplasty and two types of sigmoidocystoplasty that required reoperative surgery. METHODS: Between 1981 and 1997, 158 patients with a mean age of 11 years (range 2 to 25) underwent augmentation cystoplasty. Ileum or sigmoid colon was used in 133 patients, who were the subjects of this study. The mean follow-up was 64 months (range 6 to 185). Indications included neurogenic bladder (n = 100), bladder exstrophy (n = 12), cloacal exstrophy (n = 6), posterior urethral valves (n = 3), and miscellaneous (n = 12). Ileum was used in 65 patients and sigmoid colon in 68. Of these, 48 underwent conventional colocystoplasty and 20 seromuscular colocystoplasty lined with urothelium (SCLU). Seventy-nine percent required additional procedures to achieve continence or facilitate catheterization, which included bladder neck procedures in 56% or continent stomas alone in 23%. RESULTS: There were no deaths or complications of bowel anastomosis. Overall, continence was achieved in 95%. Spontaneous bladder perforation was highest in patients with neurogenic bladder. Calculi developed more frequently in patients with continent stomas (P = 0.04) and in patients with bladder/cloacal exstrophy (32%) than in patients with neurogenic bladder (P = 0.01). Additional procedures and route of catheterization did not increase the risk of perforation. One patient with SCLU with known hypercalciuria developed bladder calculi. CONCLUSIONS: Sigmoid colon showed a trend of a lower rate of SBO with no difference in perforation or stone formation compared with ileum. Primary diagnoses of bladder or cloacal exstrophy and continent stomas are risk factors for the development of calculi. SCLU has a low rate of surgical complications and no incidence of perforation or SBO thus far; therefore, we advocate the use of SCLU when feasible, and sigmoid as the preferred bowel segment for augmentation cystoplasty.

Adolescent↗

PubMed2000

Massive hematuria in adults with Klippel-Trenaunay syndrome associated with vascular malformation of the bladder.

Although hematuria has been reported in children with Klippel-Trenaunay syndrome, it is a rare presentation in the adult population. Two cases of massive hematuria in adults with Klippel-Trenaunay syndrome are reported here. A unique feature was venous malformations of the bladder which were responsible for massive recurrent bleeding in 1 patient. The clinical presentation and management are discussed. Conservative endoscopic and arteriographic control seems to be appropriate as initial management in these patients.

Adult↗

PubMed2000

Hydro-jet assisted laparoscopic partial nephrectomy: initial experience in a porcine model.

PURPOSE: Hemostasis represents a challenge when performing laparoscopic partial nephrectomy. Hydro-Jet cutting is an advanced technology that has been used to create an ultra-coherent water force that functions like a sharp knife. In the surgical field, it has mainly been used for liver surgery and initial clinical experience with laparoscopic cholecystectomies has been favorable. This technique allowed selective parenchymal cutting with preservation of vessels and bile ducts. We describe a novel Hydro-Jet assisted dissection technique for laparoscopic partial nephrectomy in a porcine model. MATERIALS AND METHODS: Ten partial nephrectomies were performed in 5 pigs using a Muritz 1000 (Euromed Medizintechnik, A. Pein, Schwerin, Germany) Hydro-Jet generator. A thin stream of ultra coherent fluid is forced at a high velocity through a small nozzle. A modified probe allows both blunt dissection concomitantly with high-pressure water application. Coagulation can be applied via a bipolar thermoapplicator as needed. RESULTS: Laparoscopic partial nephrectomy was successful in all animals. Water-jet cutting through the parenchyma was virtually bloodless and preserved the vasculature and the collecting system. The vessels were then ligated or coagulated under direct vision. The continuous water flow established a bloodless operating field and a clear view for the surgeon. The mean dissection time and warm ischemia time were 45+/-9 and 17+/-3 minutes, respectively. CONCLUSIONS: This preliminary study supports the suitability of this technique for laparoscopic partial nephrectomy to improve hemostasis. The improved anatomical dissection and hemostasis may further decrease morbidity and operative time. Further studies are underway to compare this technique with laser coagulation for laparoscopic partial nephrectomy.

Animals↗

PubMed2000

Testicular position in the androgen insensitivity syndrome: implications for the role of androgens in testicular descent.

PURPOSE: We compared testicular position with genital phenotype in a clinical series and a literature review of androgen receptor mutations to assess the role of androgens in testicular descent. MATERIALS AND METHODS: Our clinical reports, the androgen receptor mutations database and selected literature were reviewed. Subjects with a proved androgen receptor mutation were included in our study when a female or ambiguous phenotype was present (Quigley grade 3 to 7) and testicular position was documented. Comparison among groups was done by Fisher's exact or chi-square test. RESULTS: Of the 7 patients with detailed clinical records 5 had abdominal (bilateral in 4) and 2 had bilateral inguinal testes. Four patients with abdominal testes also had aberrant pelvic ligaments extending medially from the gonads. Including an additional 102 cases identified in the literature, abdominal testes were present in 52% and 3% of those with complete and partial androgen insensitivity, respectively. The incidence of abdominal testes was highest (86%) in patients with a complete female phenotype and no pubic hair (grade 7). It decreased significantly with increasing masculinization and was higher in phenotypic females diagnosed at or after (67%) than in those identified before (22%) puberty. Hernia was associated with inguinal and abdominal testes. CONCLUSIONS: Testicular position correlates with genital phenotype in patients with androgen receptor mutations, supporting a major role for androgens in testicular descent. Inguinal hernia and abnormal pelvic ligaments in these individuals may partially determine testicular position but to our knowledge the role of androgen receptors, if any, in their development is unknown.

Androgen-Insensitivity Syndrome↗

PubMed1999

Outcome of palliative urinary diversion in the treatment of advanced malignancies.

BACKGROUND: It is unclear whether palliative endourologic or percutaneous urinary diversion in the treatment of advanced cancer provides significant improvement in quality or duration of life. The purpose of this study was to evaluate survival and performance status after endourologic palliative urinary diversion in patients with advanced malignancy and to compare the results for different malignancies. METHODS: One hundred three patients with advanced malignancies underwent palliative urinary diversion (stent or nephrostomy) between 1986 and 1997. Ninety-two patients and 11 patients had bilateral and unilateral obstruction, respectively. Indications, complications, performance status after diversion, and survival for patients with different malignancies were identified and compared. A modified Karnofsky performance scale (KPS) was used for assessment of physical performance. A scale of 0-4 was used: 0) hospitalized until death; 1) bedridden at home, severe pain despite analgesia; 2) moderate disability, moderate pain despite analgesia; 3) mild disability, pain free with medication; and 4) normal. RESULTS: The mean age of patients was 68 years. The mean pre- and postoperative creatinine levels were 6 mg/dL and 3.3 mg/dL, respectively (P < 0.0001). The median survival and days of hospitalization were 112 and 45, respectively. The median postdiversion KPS score was 2 (range, 0-4), and 15% of patients never left the hospital. Overall, 51% required secondary percutaneous procedures, and 68.4% had complications (minor, 63%; major, 5.4%). CONCLUSIONS: Most patients with advanced cancers had poor performance status and survival after diversion. Eighty six percent had cancer-related symptoms despite the diversion. The average survival was 5 months, 50% of which was spent in the hospital. Primary endourologic procedures had a high failure rate, and additional procedures were required.

Aged↗

PubMed1999

Long-term outcome based on the initial surgical approach to ureterocele.

PURPOSE: The management of extravesical ureterocele is controversial. Heminephrectomy and recently recommended primary incision or puncture have high reoperation rates. We reviewed and compared the long-term results of these procedures with those of primary lower tract reconstruction for ureterocele. MATERIALS AND METHODS: We reviewed the records of 106 children with ureterocele treated between 1979 and 1997. Followup was available in 99 patients, including 72 with extravesical and 27 with intravesical ureterocele. Patients with extravesical ureterocele were divided based on initial management into group 1-13 who underwent transurethral incision or puncture, group 2-41 who underwent an upper tract approach, including partial or complete nephrectomy with partial ureterectomy or ureteroureterostomy and group 3-18 who underwent complete reconstruction, including ureterocelectomy and ureteral reconstruction with or without upper tract surgery. RESULTS: Overall the reoperation rate in patients with intravesical ureterocele was 22% and 23% in those treated with initial endoscopic incision or puncture. In patients with extravesical ureterocele the reoperation rate was 100, 41 and 0% in groups 1 to 3, respectively. Differences in followup (overall mean 6 years) and the incidence of preoperative reflux in the 3 groups were not statistically significant. In group 2, the reoperation rate in patients with versus without preoperative reflux was 57 versus 20% (p = 0.08). Of the 25 prenatally diagnosed patients urinary tract infection developed preoperatively in 3 (12%) at ages 2, 3, and 6 months, respectively. Mean age at the time of the initial operation in all prenatally diagnosed patients was 3.1 months (range 5 days to 11 months). CONCLUSIONS: Complete reconstruction appears to be safe and highly effective even in infancy for treating extravesical ureterocele. Although the primary upper tract approach is associated with a significantly higher reoperation rate, it is a favorable alternative in patients with no preoperative reflux. However, while transurethral decompression is effective in the majority of patients with intravesical ureterocele, it is not definitive therapy for extravesical ureterocele and it should have a limited role in initial management.

Adolescent↗

PubMed1999

Ureteral reimplantation in infancy: evaluation of long-term voiding function.

PURPOSE: The advisability of early ureteral reimplantation in neonates and infants is controversial and to our knowledge long-term results are not available. We evaluated long-term voiding function after ureteral reimplantation in infancy. MATERIALS AND METHODS: Between 1984 and 1993, 32 children underwent ureteral reimplantation in year 1 of life at our institution. Long-term results were evaluated in regard to surgical outcome, voiding function, urinary tract infection and the need for prophylaxis. Analysis of voiding function included family interviews, uroflowmetry and post-void residual urine measurement. RESULTS: Complete long-term data were available in 14 girls and 7 boys. The diagnosis was primary bilateral and unilateral vesicoureteral reflux, and ureterovesical junction obstruction in 11, 4 and 6 cases, respectively. Of the 26 refluxing renal units overall disease was grade II in 3, III in 6 and IV to V in 17. Patient age at surgery was 0.6 to 12 months (mean 5.4) and followup was 5 to 13 years (mean 9.5). Tapered reimplantation was performed in 8 renal units using excisional or infolding in 5 and 3, respectively. There were no complications in 19 patients (94%), while 2 had postoperative reflux for which 1 underwent reoperation. In 13 patients voiding habits were normal, while 8 reported infrequent voiding (3 or fewer voids daily). In 19 of the 20 patients tested voided volume was appropriate, and the flow rate of 10.8 to 52.7 cc per second (mean 20.9) and post-void residual urine volume of 0 to 40 cc (mean 11) were considered normal. One patient with normal uroflowmetry had incomplete vesical emptying. CONCLUSIONS: Early reimplantation may result in a high technical success rate and low postoperative morbidity in infants. After long-term followup infrequent voiding was common but noninvasive assessment of bladder function revealed no significant abnormality in the majority of patients.

Female↗

PubMed1999

Lack of morbidity from urodynamic studies in children with asymptomatic bacteriuria.

OBJECTIVES: Patients on clean intermittent catheterization (CIC) have a high rate of asymptomatic bacteriuria. Although prophylactic antibiotics for routine surgical procedures in patients with bacteriuria is common practice, the role of prophylaxis for invasive diagnostic procedures remains unclear. The aim of this study was to investigate the morbidity associated with urodynamic evaluation in patients with asymptomatic bacteriuria. METHODS: Routine urodynamic evaluation was performed in 69 pediatric patients (mean age 10 years). Ninety-six percent had a neurogenic bladder, and most were on CIC. Routine urine cultures were obtained at the time of the cystometrogram. Forty-six patients had positive urine cultures, and 23 patients with sterile urine served as a comparison. Patients were evaluated subjectively for symptoms of a urinary tract infection (UTI) within 1 week of the procedure. The results of the cystometrograms were compared between the patients with and without bacteriuria. RESULTS: No patient developed symptomatic UTI after the urodynamic studies. Overall, 65% of the patients with and 52% of the patients without bacteriuria had adequate capacity and compliance, and there was no difference in the urodynamic findings between the patients with and without bacteriuria (P = 0.4). CONCLUSIONS: Urodynamic studies were performed safely in the presence of asymptomatic bacteriuria in the present study. Therefore, routine use of urine cultures or prophylactic antibiotics before urodynamic studies in pediatric patients with a neurogenic bladder does not appear to be indicated.

Bacteriuria↗