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Lower urinary tract symptoms in men, age-related (including symptoms of benign prostatic hyperplasia/hypertrophy) - Management
Urinary frequency-volume chart
- A urinary frequency–volume chart is used to help distinguish and diagnose:
- Frequency: high frequency with normal 24-hour volume suggests that the bladder capacity is diminished (the male bladder normally holds 300–600 mL urine comfortably).
- Polyuria: passing more urine than usual (up to 3 L of urine in 24 hours is normal).
- Nocturia: waking at night to urinate.
- Nocturnal polyuria: passing, at night, more than 35% of the 24-hour urine production.
- A urinary frequency–volume chart (pdf) formatted for printing or downloading is available from CKS.
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