FIGURE 1 Cystometrograms (CMG) in normal urination, OABS, and detrusor underactivity.
From the following article:
Diagnosis and management of patients with overactive bladder syndrome and abnormal detrusor activity
Michelle Jo Semins and Michael B Chancellor
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Figure 1. Cystometrograms (CMG) in normal urination, OABS, and detrusor underactivity.
(A) Normal CMG in a woman 52 years of age without any voiding complaints. Bladder capacity was 400 ml, at which time she was told to void. She developed a voluntary bladder contraction of 48 cm H20 magnitude. The bladder was stable during the filling phase. (B) OABS on a CMG of a woman of 58 years of age with day and night-time urgency, urinary frequency, and urge incontinence. She felt full at a volume of 185 ml, at which time she developed an involuntary bladder contraction. She was unable to inhibit this bladder spasm and leaked urine. (C) Detrusor underactivity of a woman with insulin-dependent diabetes who is 61 years of age, she voids only three-times a day. She strains to void but does not feel empty, leaks between voids, and has had recurrent urinary tract infections. On CMG she had no voluntary or involuntary bladder contractions to >800 ml. Pves, intravesical pressure.
