Fig. 8.1
UDS tracing of primary bladder neck obstruction
Fig. 8.2
Fluoroscopy demonstrating Crede maneuver to void (rings)
Findings
Involuntary contraction was present starting at 113 cm3. At 138 cm3 she had an uninhibited contraction (not unusual in the setting of obstruction) to 20 cm H2O and was able to suppress a leak. At 149 cm3 she was given permission to void. Detrusor pressure at maximum flow (PdetQmax) was 26, flow (Qmax) 10. By the Blaivas-Groutz nomogram, this puts her in at least the mild obstruction zone. EMG relaxed. Similarly, in Nitti’s study, obstructed women were more likely to have a Qmax closer to 9 mL/s. She voided 87 cm3. Similarly, by the criteria of Chassagne et al. (Qmax < 15 mL/s and PdetQmax > 20 cm H2O) and Defreitas et al. (Qmax < 12 mL/s and PdetQmax > 25), she is obstructed.
She performed Valsalva at the end which she confirmed was to encourage emptying. PVR was catheterized for 125 mL. Total capacity was therefore 212 mL. In Fig. 8.2, note the hands with rings demonstrating the Crede maneuver and the closed bladder neck. This image is an excellent example of utility of video (fluoroscopy ) urodynamics for demonstrating obstruction during attempted void. Nitti et al. found that video urodynamic obstruction criteria correlate well with standard obstructive criteria [23].
8.6.1.5 Treatment Options
First-line therapies, a trial of alpha blockade and pelvic floor rehabilitation, did not improve emptying. Unilateral transurethral incision of the bladder neck was performed to decrease outflow resistance. The patient maintained anticholinergics for detrusor overactivity. Since stress urinary incontinence is more of a possibility in women after intervention, some women will prefer to self catheterize rather than opt for permanent intervention, and this option should be offered.
8.6.2 Patient 2: Obstructing Sling
8.6.2.1 History
The patient is a 59-year-old woman with a history of pelvic pain who presents for initial evaluation. In 1987, she had a difficult delivery which resulted in “damage in the rectal and bladder areas” with uterine prolapse. She had a hysterectomy in 1991. She experienced voiding symptoms and difficulty with bowel evacuation from 2003 to 2006. She had seen multiple providers over the years for ongoing “voiding issues.” In 2007, she had a TVT, vaginal enterocele repair, sacrospinous ligament vault suspension, posterior colporrhaphy with perineorrhaphy, and dermal allograft in the posterior compartment. Later in 2010, she underwent a laparoscopic sacrocolpopexy for vault prolapse and a traction enterocele. Finally, in 2014, she had transanal rectocele repair performed with synthetic material. She presented to our clinic in 2015 due to primarily urinary frequency. She was “worried that [her] bladder is at the wrong angle.” The most recent rectocele surgery had aggravated her symptoms. She described LUTS (frequency every 2 h while awake, nocturia × 2–3, weak stream, incomplete emptying, post-void dribbling, intermittency, and posturing/straining to void). She also endorsed urge incontinence and used 1–2 pads per day. She continued to have pelvic pain. The patient underwent a comprehensive evaluation including examination for mesh complications, intervention for high-tone pelvic floor dysfunction, and urodynamic testing .
8.6.2.2 Physical Examination
Vitals within normal limits. BMI 26. Alert and oriented to person, place, and time. Normal mood and affect. No acute distress. Heart regular rate and rhythm no murmurs, rubs, or gallops. Chest clear bilaterally. Abdomen soft, non-distended, non-tender, and no masses. Well-healed surgical scars. No costovertebral angle tenderness. No spinal scars. Pelvic: + vaginal atrophy. Baden-Walker Grade 1 cystocele (POPQ Aa and Ba-2). Some palpable kinking at the level of the TVT. No appreciable stress incontinence or urethral hypermobility. + High-tone pelvic floor (levator: puborectalis and iliococcygeus) muscles with tender trigger points. No mesh erosion. Nonlocalizing neurological exam, normal anal wink and sphincter tone .
8.6.2.3 Lab Work/Other Studies
Urinalysis—negative for blood, nitrates, leukocyte esterase, and protein. Post-void residual volume 100 cm3 directly post-void.
8.6.2.4 UDS
See Figs. 8.3 and 8.4.
Fig. 8.3
UDS tracing of obstructing sling
Fig. 8.4
Fluoroscopy demonstrating obstructing sling
Findings
The patient was found to have normal compliance on the study. Although only 279 cm3 were instilled, she voided 445 cm3 and the PVR was 180 cm3 for a total capacity of 625 cm3. (Upon questioning she had imbibed a large tea prior to the study.) There was no involuntary contraction. A voluntary contraction was present augmented by some Valsalva voiding. The patient reported (as many do) that she often pushes to augment emptying. Bladder outlet obstruction was judged present, due to pdet > 20 during the void and flow of 10 [Lemack and Zimmern (Qmax < 11 mL/s and PdetQmax > 21 cm H2O), Chassagne et al. (Qmax < 15 mL/s and PdetQmax > 20 cm H2O), and Defreitas et al. (Qmax < 12 mL/s and PdetQmax > 25)] [17, 20, 21], related either to her mild cystocele, the sling, or both. Detrusor-external sphincter dyssynergia was absent as the EUS relaxed during the initiation of the contraction, and the EMG did not rise until she performed Valsalva. There was poor emptying at the end of the study with a PVR of 180 cm3. Figure 8.4 shows a displaced and kinked bladder neck likely related to a proximal obstructing TVT, with a slight overlying cystocele .
8.6.2.5 Treatment Options
For this complex patient, we performed a trial of pessary prior to sling takedown in order to reassure her that the sling rather than the prolapse was causing the obstruction. She was sent for pelvic floor rehabilitation and treated the urgency with anticholinergics as part of her program given the multiple surgeries and the likelihood of acquired voiding dysfunction related to her pain and obstruction. Additional treatment options would have included intermittent catheterization but given the normal bladder contraction on urodynamics this was down-counseled. Recurrent stress incontinence and worsening of the urge incontinence were advised as risks of urethrolysis .
8.6.3 Patient 3: Obstructing Cystocele
8.6.3.1 History
The patient is a 67-year-old woman who was seen in consultation for pelvic organ prolapse. She was initially referred by her primary physician to a gynecologist who confirmed her diagnosis of cystocele. She stated that she had had trouble with her “bladder dropping.” She denied symptoms, but it did bother her to know that the “bulge” was there. She denied LUTS. She did, on further questioning, describe unawares incontinence of two light pads per 24 h, and the odor bothered her.
8.6.3.2 Physical Examination
Vitals within normal limits. BMI 27. Alert and oriented to person, place, and time. Normal mood and affect. No acute distress. Heart regular rate and rhythm no murmurs, rubs, or gallops. Chest clear bilaterally. Abdomen soft, non-distended, non-tender, with no masses. Well-healed lower midline abdominal surgical scars. No costovertebral angle tenderness. No spinal scars. Pelvic: + vaginal atrophy. Baden-Walker Grade 3 cystocele and Grade 1–2 uterine prolapse (POPQ Aa + 3, Ba +5, C-3) on supine as well as standing exam. Levator muscles soft, strength three fifths. There was no leakage with cough/Valsalva. Urethral mobility 30°. Normal resistance on catheterization with a post-void residual of 325 mL. Nonlocalizing neurological exam, normal anal wink and sphincter tone .
8.6.3.3 Lab Work/Other Studies
Urinalysis—negative for blood, nitrates, leukocyte esterase, and protein.
Renal ultrasound without hydronephrosis.
Post-void residual urine assessment via catheterization was 325 mL.
8.6.3.4 UDS
See Figs. 8.5 and 8.6.
Fig. 8.5
UDS tracing of cystocele
Fig. 8.6
Fluoroscopy demonstrating cystocele
Findings
Patient could not void for the free uroflow. The pre-UDS post-void residual was 100 cm3 by catheterization. On the pressure/flow study, a voluntary contraction was present with detrusor pressure at maximum flow (PdetQmax) of 25 cm H2O while maximum flow (Qmax) was 17 mL/s. Although bladder outlet obstruction was not clearly present by flow, Pdet was 25 cm H2O throughout the void and for 30 s after urination totaling a 60 s contraction. Mild Valsalva was present. These subtle findings, along with fluoroscopic evaluation (Fig. 8.6 showing cystocele by fluoroscopy), were supportive of an obstructing cystocele despite the flow rate being higher than the published algorithms. The cystocele was clearly present 10 cm below the inferior margin of the pubic symphysis on the fluoroscopic images .
8.6.3.5 Treatment Options
The patient was managed initially with a pessary, and we demonstrated improved emptying. She also appreciated dry liners with resolution of the unawares incontinence. There was no new stress incontinence with pessary reduction. She was presented with the option of surgical repair and underwent sacrospinous ligament apical vaginal vault suspension and cystocele repair with plication and cadaveric dermal graft to the arcus tendineus fascia pelvis and sacrospinous ligaments. At follow-up she did very well, with resolution of the bulge as well as the urinary leakage, normal voiding patterns, and the absence of de novo stress urinary incontinence .
8.6.4 Patient 4: Obstructing External Sphincter from Dysfunctional Voiding or Fowler’s Syndrome
8.6.4.1 History
The patient is a 42-year-old woman who was seen in consultation for urinary retention, referred by her nephrologist with a creatinine of 3.1 and hydronephrosis on ultrasound. She reported gradual onset of incontinence followed by frank retention, leading to a hospital stay in the United Kingdom in which she was diagnosed with “Fowler’s syndrome .” She was started on clean intermittent catheterization prior to travel to the United States one month prior to evaluation. She described unawares incontinence, and when the bladder was full she had back pain.