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A heparin or saline lock is an IV without being attached to that damn pole. Conventional IVs attach to a tube that leads to a solution bag hanging on the pole. A lock is an IV that is attached to a little chamber on your hand filled with either saline or heparin, thus the name. It is about the size of a nickel and provides access to your venous system if the nurses need to give you any medication fast but allows you freedom of movement (no tubes or poles).
1 Your IV will stay in place for about 1 to 2 hours for a vaginal delivery and usually up to 24 hours for a cesarean section (until your vital signs and bleeding are stable). 2  Your significant other will be allowed to stay with you during the recovery time, or go to the nursery with the baby if necessary.