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.
Fentanyl is an opioid with rapid onset of pain relief; it is often used to treat breakthrough pain. Duragesic and similar patches release fentanyl through the skin. A patch may provide pain relief for up to 72 hours. Several deaths or life-threatening overdoses have been linked to misuse of fentanyl patches.
DuoDERM patches are manufactured by ConvaTec and are used in medical settings to aid in wound healing. DuoDERM patches cover the wound and can be worn for up to a week without replacement. DuoDERM patches work to create a healing environment for wounds. When the patch contacts the skin, it forms a gel to create a moist healing environment, according to the ConvaTec DuoDERM website.