Ventilation-perfusion (V/Q) scan is a specialized test that uses a radioactive substance to show the parts of the lungs that are getting oxygen (ventilation scan) and getting blood flow (perfusion scan) to see if there are portions of the lungs with differences between ventilation and perfusion.
Moleskin may be the first commercial blister treatment and prevention product I remember using. My dad always kept some moleskin in his pack and at the first complaint of any hot or sore feet, out it would come.
Another product that I've used to help heal minor skin abrasions is Antiseptic Healing Ointment made by Brave Soldier. This unique blend of natural botanicals (Tea Tree Oil, Aloe, Jojoba Oil, Vitamin E/Comfrey) helps wounds heal quickly and reduces the likelihood of scarring.