An intravenous sensing system includes an intravenous needle that may be inserted into an artery. Thus, the intravenous needle may receive blood from the artery. The intravenous needle may be fluidly coupled to a dialysis machine. Thus, the blood may be routed to the dialysis machine. A sensing unit is coupled to the needle. The sensing unit senses blood pressure inside the artery when the intravenous needle is inserted into the artery. The sensing unit is electrically coupled to the dialysis machine. Thus, the dialysis machine may monitor the blood pressure.