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Clinical Trial Summary

Arthroplasty increases the risk of postoperative urinary retention. Treatment of postoperative urinary retention is indwelling or intermittent catheterization. The need for catheterization is most commonly determined with an ultrasound scanner. Catheterization increases the risk of urinary tract infection, which may further lead to haematogenic infection of the artificial joint. There is no evidence of an optimal way to monitor the onset of spontaneous urination. The aim of the study is to determine whether monitoring the onset of spontaneous urination after fast track knee arthroplasty is safe based on symptoms alone without ultrasound monitoring.


Clinical Trial Description

Adult patients undergoing knee arthroplasty will be recruited to this study. Participants will be randomized to the ultrasound monitoring group or the symptoms alone group. In the symptoms alone group, urination is monitored by asking at regular intervals about the onset of spontaneous urination and the patient is catheterized only on a symptomatic basis or if spontaneous voiding has not started 10 hours after the spinal anesthesia. Symptoms that indicate catheterization are lower abdominal pain or need to void. In the ultrasound group, urinary retention is monitored according to current practice with an ultrasound scanner and the patient is catheterized if residual urine exceeds 800 ml or if the patient is symptomatic. The primary outcome variable is the change in IPSS score from the baseline to 3 months after the procedure. The baseline score is evaluated preoperatively. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT04707001
Study type Interventional
Source Central Finland Hospital District
Contact Juha Paloneva, professor
Phone 014 269 1680
Email juha.paloneva@ksshp.fi
Status Recruiting
Phase N/A
Start date May 1, 2021
Completion date July 2026

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