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.
What Is Fentanyl Used For In Patch Form? The transdermal patch version of fentanyl is specifically for patients who are already opioid dependent. This patch absorbs through the skin, and a buildup of the medicine has to occur in the skin before it starts working.