How the Air-Filled Catheter is Inserted into the Human Body and How EMG Electrodes are Attached to the Pelvic SystemThe air-filled cystometry catheter is inserted into the urethra and advanced towards the bladder. Before insertion, the catheter is lubricated to ensure smooth placement and minimize discomfort. Once the catheter reaches the bladder, the balloon at the catheter’s tip is inflated with air, securing it in position.For EMG (Electromyography) electrodes, they are typically attached to the pelvic muscles, specifically around the perineal area. The electrodes are placed on the skin surface after cleaning the area to ensure good contact. Adhesive electrodes may be used, which stick to the skin and measure muscle activity during urodynamic studies. Proper placement of these electrodes is essential for accurate signal detection from the pelvic floor muscles during bladder filling and voiding phases.