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.
Fentanyl skin patches should only be used by patients who are already taking other narcotic painkillers and who have chronic pain that is not well controlled with shorter-acting painkillers. Patients who are using the fentanyl skin patch should follow their doctor's and pharmacist's directions exactly.