Frequency of micturition
The normal bladder capacity is 300-400 ml which is the amount of urine passed each time. It normally occurs 4-5 times during the day & none or once during the night.
An increase in the number of voids per day (>5 times) not accompanied by an increase in total volume of urine per day above 2500ml. If accompanied by increased total volume of urine > 2500ml then this is polyuria.
1. Bladder irritation
- Bladder stones
- Foreign body
2. Reduced bladder capacity
- Pelvic tumors
3. Neuro-psychiatric disturbance
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