9 results on '"Fischer, Katherine M."'
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2. Caudal anesthesia is not associated with post-operative complications following distal hypospadias repair.
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Fischer, Katherine M., Van Batavia, Jason, Hyacinthe, Nathan, Weiss, Dana A., Tan, Connie, Zderic, Steve A., Mittal, Sameer, Shukla, Aseem R., Kolon, Thomas F., Srinivasan, Arun K., Canning, Douglas A., Zaontz, Mark R., and Long, Christopher J.
- Abstract
The use of caudal anesthesia at the time of hypospadias repair remains controversial as some prior studies have reported increased postoperative complication rates associated with caudal nerve block. However, these results have been called into question due to confounding factors and heterogeneous study groups. Given the importance of identifying true risk factors associated with increased hypospadias complication rate, we examined our experience with caudal anesthesia limiting our analysis to distal repairs. We hypothesized that caudal anesthesia would not be associated with increased postoperative complications. We retrospectively reviewed our institutional hypospadias database from June 2007 to January 2021. All boys who underwent single-stage distal hypospadias repair with either caudal or penile block with minimum 1 month follow up were included. Records were reviewed to determine the type of local anesthesia, type of hypospadias repair, all complications, and time to complication. Association between any complication and local anesthesia type was evaluated by univariate and multivariate logistic regression analysis controlling for age at surgery and type of repair. A sub-analysis was performed for complications occurring ≤30 days. Overall, 1008 boys, 832 (82.5%) who received caudal and 176 (17.5%) penile block, were included. Median age at surgery was 8.1 months and median follow up was 13 months. Overall complication rate was 16.4% with 13.8% of patients requiring repeat operation. Median time to complication was 10.59 months and was significantly shorter in the caudal group (8.45 vs. 25.2 months). Caudal anesthesia was associated with higher likelihood of complication on univariate analysis; however, this was not true on multivariate analysis when controlling for age and type of repair. Caudal anesthesia was not associated with increased likelihood of complication within 30 days. Since the association between caudal anesthesia and hypospadias complications was first suggested, several studies have tried to answer this question with variable results. Our findings add to the evidence that there is no association between caudal anesthesia and increased hypospadias complications in either the short or long term. The major strengths of our study are a large, homogenous study population, robust follow up and inclusion of data from 14 surgeons over 14 years. Limitations include the study's retrospective nature as well as lack of standardized follow up protocol throughout the study period. After controlling for possible confounders, caudal nerve block was not associated with increased risk of postoperative complications following distal hypospadias repair. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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3. The following 3 cases were presented at the 2020 virtual PUOWG conferenceLate Presentation of Wilms Tumor in a Patient with Hemihypertrophy after Normal Screening.
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Fischer, Katherine M., Mittal, Sameer, Long, Christopher J., Duffy, Kelly A., Kalish, Jennifer M., Evageliou, Nicholas F., and Kolon, Thomas F.
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NEPHROBLASTOMA , *CHILD patients , *ULTRASONIC imaging - Abstract
An identifiable genetic malformation or predisposition syndrome is present in 18% of Wilms tumor cases. Given this, children with conditions associated with a greater than 1% risk of developing Wilms tumor are recommended to have regular surveillance imaging with renal ultrasound until age 7. Seven years is the recommended screening duration because 95% of cases will occur by this age. We present a case of a child with isolated hemihypertrophy, associated with 5% risk of Wilms tumor, who presented with a tumor after the recommended screening, at age 9, brining into question the age cutoffs currently used. [ABSTRACT FROM AUTHOR]
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- 2021
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4. Intrascrotal Lipoblastoma: A Rare Cause of Paratesticular Mass in a Pediatric Patient.
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Fischer, Katherine M., States, Lisa J., Long, Christopher J., Canning, Douglas A., Kolon, Thomas F., and Mittal, Sameer
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CHILD patients , *LIPOSARCOMA , *FAT cells , *BENIGN tumors , *DIFFERENTIAL diagnosis , *SCROTUM - Abstract
There is a broad differential diagnosis for a pre-pubertal child presenting with a scrotal mass including both benign and malignant etiologies. Lipoblastomas are rare benign neoplasms originating from fat cells that occur most commonly on the trunk or extremities of young children. There have been less than 20 cases of scrotal lipoblastomas reported in the literature, with the majority occurring in children less than 3 years of age. Here we present a unique case of an 18-month male presenting with a paratesticular mass found to be a lipoblastoma on final pathology. [ABSTRACT FROM AUTHOR]
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- 2022
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5. Follow-up and Outcomes of Patients With Long-term Cutaneous Vesicostomies at a Single Institution.
- Author
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Fischer, Katherine M., Bowen, Diana K., Kovell, R. Caleb, Canning, Douglas A., and Weiss, Dana A.
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CYSTOSTOMY , *SPINA bifida , *URINARY organs , *MEDICAL registries , *BOWEL & bladder training - Abstract
Objective: To identify and describe the characteristics of a group of patients at our institution who are satisfied with cutaneous vesicostomy for long-term bladder management and never undergo subsequent continence surgery.Methods: Using an IRB-approved registry of our patients undergoing reconstructive urinary tract surgery since 1985, we identified patients who underwent vesicostomy creation and were 15 years or older as of October 2017 and performed a retrospective chart review.Results: Sixty-seven patients were included with the most common diagnosis being spina bifida and the average duration of vesicostomy 14.3 years (range 8 months to 35 years). In follow-up, 38 patients (56.7%) had conversations regarding further surgery and 31 (46.3%) had their vesicostomies taken down. Of the 36 patients who still had their vesicostomy at last follow-up, 29 (80.6%) had spina bifida and 14 (38.9%) were satisfied, 1 (2.8%) was unhappy, 4 (11.1%) were deceased and satisfaction was unknown for 17 (47.2 %).Conclusion: Although often intended to be temporary, in our experience many patients keep their vesicostomy for a long time and into adulthood, with generally high satisfaction and low complications. In the properly selected patient, vesicostomy may be a good long-term operation to prevent infection and renal deterioration, though more rigorous studies of these patients are needed. [ABSTRACT FROM AUTHOR]- Published
- 2020
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6. Who needs an ultrasound? Using patient symptom questionnaire & UTI history to determine when to obtain an RBUS in children with non-neurogenic lower urinary tract dysfunction.
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Fischer, Katherine M., Samet, Ethan, Messina, Adriana, Berry, Amanda, Zderic, Stephen A., and Van Batavia, Jason P.
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Non-neurogenic lower urinary tract dysfunction (LUTD) is one of the most common reasons for presentation to a pediatric urologist, affecting up to 20% of children. Predicting who will benefit from RBUS as part of their work-up is challenging as the majority will have normal imaging. Our objective was to assess the utility of using the Dysfunctional Voiding and Incontinence Scoring System (DVISS) and urinary tract infection (UTI) history to predict which LUTD patients were most likely to have an abnormal RBUS as well as determine a DVISS cutoff to aid in making this prediction. We hypothesized that higher DVISS scores and a positive urinary tract infection (UTI) history would be associated with increased likelihood of RBUS abnormality. We retrospectively reviewed outpatients seen for LUTD from 5/2014-1/2016 who received an RBUS. Association between prior UTI, DVISS score, gender, and race and RBUS abnormality were evaluated using logistic regression analysis. Receiver operating characteristic (ROC) curves were created to evaluate the predictive model and a Youden index calculated to determine the optimal cutoff for DVISS score to predict abnormal RBUS. 15 of 333 patients (4.5%) had a clinically significant RBUS abnormality. Significantly more patients with abnormal RBUS had a positive UTI history and median DVISS was higher. UTI history and DVISS score were associated with RBUS abnormality whereas neither gender nor race were. A DVISS score cutoff of 12 was determined to be ideal for predicting abnormal imaging. Using DVISS≥12 and positive UTI history, patients with both risk factors were significantly more likely to have an abnormal RBUS than those with zero or one risk factor (Figure). To the best of our knowledge this is the first study to try to identify risk factors associated with RBUS abnormality in pediatric LUTD patients and create an evidence-based approach to imaging these patients. We found both DVISS cutoff ≥12 and positive UTI history to be useful to risk stratify LUTD patients' likelihood of abnormal RBUS. Limitations include the study's retrospective nature as well as the fact the population was drawn from a tertiary care pediatric hospital with a large referral population and the fact that the decision to order an RBUS was based on individual clinician preference and decision making. We found that DVISS score≥12 and UTI history are useful in guiding the decision to obtain RBUS in pediatric LUTD patients. [ABSTRACT FROM AUTHOR]
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- 2023
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7. AUTHOR REPLY.
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Fischer, Katherine M and Weiss, Dana A
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- 2020
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8. Variant of Bladder Exstrophy With an Intact Penis: Surgical Options and Approach.
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Ramji, Jaishri, Eftekharzadeh, Sahar, Fischer, Katherine M., Joshi, Rakesh S., Reddy, Pramod P., Pippi-Salle, Joao Luiz, Frazier, Jennifer R., Weiss, Dana A., Canning, Douglas A., and Shukla, Aseem R.
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BLADDER exstrophy , *PENIS , *BLADDER , *MEN , *UROLOGICAL surgery - Abstract
Variants of bladder exstrophy are a rare but diverse spectrum of bladder exstrophy-epispadias complex. This case series describes a group of 4 unique exstrophy variant cases who had an intact phallus, but a completely open bladder plate. These patients underwent exstrophy repair and concomitant umbilicoplasty at the Civil Hospital, Ahmedabad as part of the US-India Multi-institutional Bladder Exstrophy Collaboration and were followed at the same institution. We believe that a detailed assessment of bladder neck prior to reconstructive repair and bladder closure would be beneficial in these cases as the extent of bladder neck involvement would affect reconstructive approach. [ABSTRACT FROM AUTHOR]
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- 2021
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9. Utilization of Robot-assisted Surgery for the Treatment of Primary Obstructed Megaureters in Children.
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Mittal, Sameer, Srinivasan, Arun, Bowen, Diana, Fischer, Katherine M., Shah, Jay, Weiss, Dana A., Long, Christopher J., and Shukla, Aseem R.
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SURGICAL robots , *REIMPLANTATION (Surgery) , *URINARY tract infections - Abstract
Objective: To describe the technical aspects of robot assisted laparoscopic ureteral reimplantation (RALUR) for the management of primary obstructive megaureter (POM) and report initial outcomes, safety, and feasibility of the procedure.Methods: Using an IRB- approved robotic surgery registry, we performed a retrospective chart review of patients undergoing RALUR for POM between April 2009 and May 2019.Results: A total of 18 patients underwent RALUR using a modified Lich-Gregoir technique for management of POM and 7 (38.9%) of these underwent intracorporeal ureteral tapering at the time of surgery. At median follow up of 27.5 (IQR 11-50) months, no patient required reoperation for recurrent obstruction and all patients had improvement in hydronephrosis postoperatively. 30-day complications were low with 1 Grade I, 2 Grade II and 1 Grade III Clavien-Dindo complication. The most common issue postoperatively was febrile urinary tract infection, occurring in 6 patients (33.3%), at an average of 3.2 months after surgery. Increased operative time was the only significant difference between the tapered verses nontapered group.Conclusion: We present the largest series of RALUR for POM to date. Based upon our initial experience with this technique we believe it is technically feasible and reproducible with good outcomes and low complication rates. Future studies are needed to track long-term outcomes and better understand indications for and the utility of ureteral tapering as well as how to minimize febrile UTIs postoperatively. Additional follow up is needed to determine the efficacy of RALUR as compared to open ureteral reimplantation for POM. [ABSTRACT FROM AUTHOR]- Published
- 2021
- Full Text
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