The pulmonic valve is the second valve of the heart. Like the aortic valve, it is also referred to as a semilunar valve, because of its shape. It lies between the right ventricle and the pulmonary artery, which takes blood to the lungs.
Transdermal analgesic patch. A transdermal analgesic or pain relief patch is a medicated adhesive patch used to relieve minor to severe pain.
A: Fentanyl skin patches are used in the treatment of persistent moderate to severe chronic pain. Fentanyl is an opioid analgesic, or pain killer. It works by changing the way the brain and nervous system respond to pain.