Feeling extremely anxious and incompetent about myself right now. I am a new Registered Nurse and just started practicing about three months ago. Last week I had to give my patient Albumin IV. I followed my facilities policy and started the infusion. I stayed with the patient for the first 15 minutes and ensured that my drip was running, and it seemed like it was running fine. The pump beeped to signal it was done so I put the pump on standby mode. This was at 2300. At 0600 I went in to administer a IV med and realized that only half of the infusion went in. I realize now that I forgot to open the vent which prevented full administration. I feel like such an idiot and this has been consuming my mind all week.