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.
Guidelines For The Use Of Fentanyl Patches Fentanyl is a strong opioid, which can be used as an alternative to morphine in patients with moderate to severe pain. Due to its long half-life, it will take at least 12 â 24 hours to achieve therapeutic drug levels and so is only of benefit in patients with STABLE PAIN. Indications For Fentanyl Patches