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.
Apple cider vinegar is also a very effective remedy for blisters on the foot due to its antibacterial and anti-inflammatory properties. It can help prevent infection and reduce pain and inflammation. 1  Dip a cotton ball into apple cider vinegar. 2  Gently swab it around the affected area and allow it to dry.