Poor bladder filling is found clinically, mostly due to specific reasons, such as in patients with long-term indwelling urinary catheters, where continuous irritation of the bladder mucosa by the air sac at the front of the catheter leads to increased contractility and excitability of the bladder forcing muscles will result in poor bladder filling. Therefore, it will be relieved after removal of the urinary catheter. If relief is never seen, patients are advised to take oral M-blockers, which can relieve the discomfort. If a urinary catheter must be left in place for a long time, a cystostomy is recommended and the poor bladder filling will be relieved. If there is more blood clotting in the bladder due to urinary tract infection or urinary bleeding, this can also stimulate persistent bladder contraction and increased excitability resulting in poor bladder filling. This condition should be treated with antibiotics for the infection and the clot should be removed from the bladder and the symptoms will improve. Other cases are seen in patients with radiation therapy, such as women with gynecologic tumors, who undergo pelvic radiation therapy after surgery, resulting in a variation in the bladder mucosa and poor bladder filling due to fibrotic contraction. There is no good treatment for this condition, but only appropriate intervals of radiotherapy to slow down the process of bladder lesions. In more severe cases, only other procedures can be performed to improve the poor bladder filling.