Fig. 5

Example of a global impedance curve from a voiding trial with artefacts. The curve is not linear during the bladder voiding period (compare with Fig. 4). This is probably caused by artefacts due to involuntary body movements during micturition in a sitting position. Abdominal muscle contraction and relaxation may cause the drastic impedance changes observed both at the beginning and at the end of the voiding period. However, baseline recordings of BCmax and RU are still extractable