Kidney transplants in patients with bladder augmentation: correlation and evolution

Safety of augmentation cystoplasty in patients with bladder abnormalities undergoing renal transplantation: a systematic review

BACKGROUND Augmentation cystoplasty (AC) has been recently proposed to improve a bladder condition before or after a renal transplantation for an optimal allograft function. Until now, AC in adults with end-stage renal disease (ESRD) is uncommon and rarely practiced. This study aimed to investigate the safety of AC in patients with bladder abnormalities who required renal transplantation. METHODS Studies of patients with ESRD and abnormal bladder who underwent AC were searched in ProQuest, PubMed, EBSCO, and Cochrane Library online databases. Only studies published in English from January 1985 to May 2020 were included. The keywords used were renal transplantation, bladder dysfunction, cystoplasty, and their synonyms. Data were extracted by two independent authors who selected, screened, and assessed the articles’ eligibility and quality. The outcomes were graft survival rate and complications of AC. RESULTS A total of 19 articles were included. AC improved an intravesical pressure, a bladder capacity, and a compliance in patients with ESRD and bladder abnormalities, allowing patients to undergo the renal transplantation. Even though AC in patients with renal transplantation resulted in a significantly higher urinary tract infection rate than patients who underwent renal transplantation only, performing AC after renal transplantation was considered safe. CONCLUSIONS AC was considered safe for patients with bladder abnormalities who underwent renal transplantation.

Evaluation of video-urodynamic studies before renal transplantation in chronic renal failure patients

OBJECTIVES

To evaluate the role of video-urodynamic examination prior to renal transplantation.

METHODS

Sixty-four kidney transplant recipients were included into the study. All patients underwent video-urodynamic examination and separate uroflowmetry. Results were evaluated based on daily mean amount of urine, duration of chronic renal failure and presence of diabetes mellitus.

RESULTS

Thirty-five (54.6%) patients showed video-urodynamic abnormalities. The mean detrusor capacity was 234 ml, the mean detrusor compliance was 17.5 cm H(2)O/ml, the mean maximum detrusor pressure was 61.9 cm H(2)O and the mean Q (max) was 13.8 ml/s in all patients. Vesicoureteral reflux was detected in 15 (23%) patients. The mean detrusor compliance and detrusor capacity significantly decreased as the daily amount of urine decreased and as the duration of chronic renal failure increased. Also, there was no significant relation between presence of diabetes mellitus and detrusor capacity and detrusor compliance.

CONCLUSION

Video-urodynamic studies before renal transplantation provide earlier diagnosis of lower tract abnormalities, which are likely to cause graft dysfunction.