Hands-free equalization (BTV, VTO) means keeping your eustachian tubes open and balanced so your eardrum stays neutral. This way, you don’t need to pinch your nose while freediving, even as you go deeper. The main benefit is that you can keep your hands free and wear a mask without needing a nose clip. Sometimes I used this equalization technique when I go deep and Fundives and also I have small nose and sometimes I couldn’t pinch it properly so I switch the equalization technique from Frenzel t

What was your first Experience like? Insertion of an intravenous (IV) cannula involves connecting a tube into a patient's vein so that infusions can be inserted directly into the patient’s bloodstream. Cannulas (also known as venflons) are available in various colours, each of which correspond to the size of the tube. The required size depends on: What will be infused, for example: colloid, crystalloid, blood products or medications. Or, at the rate the infusion is to run. In addition, the patie