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What is Uroflowmetry ?
Dr. Nabarun Biswas
(FCPS Surgery)
Registrar
Mymensingh Medical College
Hospital
Why it is performed?
• BPH
• BOO
• Neurogenic bladder
How it is performed ?
Parameters
• Voided vol (ml) : 400 – 600 ml > V comp
• Average flow rate (ml/s): 20-25 (m) 25 -35 (F)
>Q ave
• Maximum flow rate (ml/s): 50-60 > Q max
• Time to Maximum flow rate > TQ max
• Voiding time (s): 20-30 >T100
• Flow time (S): TQ
Liverpool maximum flow rate
nomogram
Normal
BPH
Stricture
Neurogenic bladder

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