Background: Chest drains or the tube thoracotomy or intercostal drainage tube gives a technique for eliminating the air and fluid from the pleural space. It is a most painful cut repressing the hacking, breathing and decreasing the pulmonary functions. The use of TENS gives a pain-relieving impact which decreases the nociceptive pathways and helps in working on pulmonary functions. Consequently, the review expects to see the impact of transcutaneous electrical nerve stimulation on pulmonary functions in patients with an intercostal drainage tube.