24. Urine flow rate curves: Note how the pattern of the curve is a useful adjunct to making a diagnosis. (a) Normal flow rate, (b) high-pressure low flow rate caused by bladder neck obstuction, (c) urethral stricture, (d,e) low-pressure low flow rates differing patterns, (f) straining to void. W, voided volume) URINARY FLOW RATE CURVES Normal and abnormal flow traces
25.
26.
27.
28. URODYNAMIC STUDIES Poor compliance during later part of filling Phasic detrusor unstability during filling Urodynamic studies: Schematic representation of (left top) moderately poor compliance during the latter stages of filling and (left bottom) phasic detrusor instability during filling. In both cases high-pressure low-flow voiding also occurs, which indicates bladder outflow obstruction
29. Low – pressure low-flow voiding caused by a poorly contracting detrusor. P abd abdominal pressure, P det detrusor pressure, P ves intravesical pressure, RU, residual urine; W, voided volume
![INTRODUCTION ,[object Object],[object Object],[object Object],[object Object]](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)