8. LUTS
Failure of storage
1. Non compliant
bladder/unstable
bladder
2. Weakness of outlet
Failure to void
1. Bladder weakness
2. Outlet obstruction
9. COMMON INDICATION OF
URO-DYNAMICS
1. Young male patient with LUTS not responding to
medical treatment.
2. BPH patients with history of prolonged diabetes
mellitus and suspected diabetic cystopathy.
3. BPH patients with history of neurologic illness eg.
parkinsonism, cerebro vascular accident etc
4. Female patients with confusing mix of stress and
urge incontinence to guide appropriate therapy.
5. Children with spinal dysraphism.
6. Neurogenic bladder dysfunction to guide
appropriate therapy
10. COMPONENT OF
URODYNAMIC STUDY
1. Uro flowmetry
2. PVR (post void residual urine) assessment
3. Cystometrography ( CMG)
4. Pressure flow study
5. Electrometrography (EMG)
Urethral pressure profile
Video urodynamic study
11. Uro flowmetry
Measurement of
urine flow rate
overtime.
1. Voided volume
2. Maximum flow rate
3. Average flow rate
4. Flow time
5. Time to maximum
flow
12.
13. Cystometrography
Double lumen catheter in put per-urethrally
for bladder filling and vesicle pressure
measurement
Rectal balloon catheter is put in the rectum
for intrabdominal pressure measurement.
Bladder is filled slowely by filling cathetar
and change in intravesical pressure with
bladder filling is plotted on computer
screen.
Detrussor pressure Pdet = Pves- Pabd
14.
15.
16. Electromyography ( EMG)
Measurement of electronic potential of
striated sphincter muscle during bladder
filling and bladder emptying.
It is measured by electrode placed on
muscle (surface electrode) or insrted in
the sphicter muscle (needle electrode).
17. URODYNAMIC EQUIPMENT
AND SET UP
1. Urodynamic table /couch
2. Cathetars (double lumen cathetar for bladder
filling/ intravesical presuure measurement and
rectal balloon cathetar for intra abdominal
pressure measurement)
3. Pressure transducers and EMG electrodes
4. Uro flowmeter
5. Display monitor and printer
6. Computer software programme installed on
PC– for secure storage of pressure and fow
measurement data
18.
19.
20.
21. PREREQUISITE FOR
URODYNAMIC STUDY
Uro-dynamic question – one should
have specific question in mind which
urologist want to know in that particular
patient.
Urine culture should be sterile.
Severe constipation should be treated.
It is an imporatnt component of urodynamic study. It gives an idea of bladder emptying pattern. Multiple parameters can be reporterd in uroflowmetry. Eg;
Main component of urodynamic study
Pressure/volume relationship of the bladder is measured during bladder filling.
Urodynamic set up consist of following components:
Urodynamic table and machine is set up in a small room of appropriate size. There should be adequate privacy in the room so that unneccesary dissturbances during study can be avoided.
Set up consist of of following component
Urodynamic question should be pertinent to patients LUTS and should help in managing voiding dysfunction in patient. History and examination should be done in details before starting the study.