Stress Urinary Incontinence Clinical Trial
Official title:
A Randomized Controlled Trial Comparing Force of Stream to Traditional Retrograde Fill Voiding Trial After Midurethral Sling With or Without Vaginal Prolapse Surgery
Urinary incontinence is a prevalent health and quality of life concern affecting almost half of women over the age of 20. Urinary retention (abnormal holding of urine) is a concern of many surgeons who perform midurethral sling surgery. All patients after outpatient midurethral sling or vaginal prolpase surgery must complete a voiding trial if they are to be discharged without a catheter. The purpose of this study is to compare two different types of postoperative voiding trials to determine which leads to less post-operative issues, such as urinary retention requiring catheterization. You are being asked to participate because you are having midurethral sling surgery, either with or without vaginal prolapse repair.
Urinary incontinence is a prevalent health and quality of life concern affecting an
estimated 49.6% of women over the age of 20 years in the USA. (1) Of these, 49.8% describe
pure stress urinary incontinence (SUI) and 34.3% report mixed stress and urgency urinary
incontinence. (1)
Midurethral sling (MUS) surgery is used to treat women with SUI, but accepted protocols for
voiding trials after midurethral sling placement do not exist. Primarily, many surgeons
measure postvoid residual (PVR) urine volume. This is done by retrograde filling of the
bladder with a predetermined amount of normal saline or water. The catheter is then removed
and the patient is permitted to void into a collection basin. The amount in the basin is
subtracted from the filled amount. The need for catheterization is generally based on
arbitrarily determined ratios of voided urine to PVR or postoperative.
The acceptable amount voided during catheterization varies among practitioners. In a study
by Kleeman et al, the patient was required to void >50% of volume filled during retrograde
fill for discharge from hospital without an indwelling Foley catheter (2). Pulvino et al,
required that the patient void > 2/3 the amount of the volume placed during retrograde fill
(3). The force of stream trial (FAST) does not prioritize amount voided, but rather the
patient's subjective force of stream. The bladder is retrograde filled with 300cc normal
saline or water and the patient is instructed to void.. Using FAST, a patient uses a VAS
scale to quantify her force of stream. If she states that her Force of Stream (FOS) is >50%
stronger than prior to surgery, independent of the amount voided, she is discharged without
a catheter. If the FOS is <50% a PVR via bladder scan is performed. If her PVR is <500cc the
patient was discharged home without a catheter in place. If the PVR, via bladder scan was >
500cc she was discharged with a catheter. Ingber et. Al. showed the FAST method was a safe
method for predicting postoperative voiding dysfunction and/or urinary retention. No
patients presented to the office or emergency room for voiding dysfunction or urinary
retention (4).
Urinary retention is a concern of many surgeons who perform midurethral sling surgery; 25%
of urologists routinely discharge patients home with a catheter and 31% admit patients
overnight or for 23 hour observation, with 42% doing so for the primary purpose of
facilitating the voiding trial. (5)
Published catheterization rates for these protocols can approach 39%. (6,7) Temporary
catheterization does not pose a significant medical risk, but it is perceived as an
inconvenience and source of discomfort for many patients. Proper care of an indwelling foley
catheter requires extra teaching from nursing and/or house staff.
No randomized control trials (RCT) have been performed comparing the FAST method to the
traditional retrograde voiding trial. In our practice we assess postoperative voiding
function using the retrograde fill with 300cc saline or water. We also require a 2/3
quantity voided for discontinuation of catheter.
All patients after outpatient midurethral sling or vaginal prolpase surgery must complete a
voiding trial if they are to be discharged without a catheter. This is standard of care and
followed in our practice. We would like to compare both postoperative voiding trials in
patients who have undergone surgical repair concomitant midurethral sling with or without
anterior colporrhaphy. We will include those patients who also had an anterior colporrhaphy
at time of sling placement as this procedure is commonly performed at the time of sling
placement for stablization of MUS. We will assess the number of emergent or unexpected
visits for voiding dysfunction. An unexpected visit to the office will be defined as any
visit outside of the patient's prior scheduled postoperative visits.
;
Allocation: Randomized, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Parallel Assignment, Masking: Open Label, Primary Purpose: Treatment
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