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.
Prepare the soak by mixing one gallon of hot water with 2 cups of white vinegar and one half cup of Epsom salt. Vinegar is a very effective treatment for infection and fungus. Epsom salt is also known as a soothing additive which will help relieve pain in the infected toe.