Abrams et al. 2002 1
Urodynamic observations are observations made during urodynamic studies
Haylen et al. 2010 2
Urodynamics: Functional study of the lower urinary tract. Clinical sequence of testing: Urodynamic investigations generally involve a woman attending with a comfortably full bladder for free (no catheter) uroflowmetry and post void residual urine volume (PVR) measurement prior to filling and voiding (with catheter) cystometry.