By: Robert H. Shmerling, MD. Harvard Health Publishing
For many people receiving care in a hospital or emergency room, one of the most common occurrences (and biggest fears) is getting an IV, the intravenous catheter that allows fluids and medications to flow into a vein in your arm or hand.
A trained health professional puts in an IV by sticking a needle that’s inside a thin tube (catheter) through the skin into a vein. Once inside the vein, the needle is removed. The catheter is left in the vein and taped down to keep it from moving or falling out. While IV lines are typically painless, the initial needle stick can be quite painful, especially for those who are a “difficult stick” (when the needle misses the vein, requiring multiple attempts).
IVs can be medically needed when the digestive system isn’t working well, to receive more fluids than you’re able to drink, to receive blood transfusions, to get medication that can’t be taken by mouth, and for a host of other treatments. In cases of massive bleeding, overwhelming infection, or dangerously low blood pressure, IV treatments can dramatically increase the chances of survival.
