Rehirable resignation without proper notice

I finally got my dream job in the ER and I tried to stay on PRN at my old Med-surg job. It hasn't been working out though. I had my old manager cancel me from a shift that is a few days in advance, and I was told it would me marked as an unexcused absence (I didn't know you could have an unexcused absence, while giving 3 days notice). The ER job schedule really hasn't allowed the time to have a PRN job, so I gave a two weeks notice, with no remaining shifts for me to work. My manager at my Med-surg job informed me I'd be listed as rehireable, with resignation without proper notice. How will this effect my future job searches? I've always given two weeks, even at the most miserable jobs, and I've attempted to here, but it's just not possible without jeopardizing my ER job. I can't juse leave the Med-surg job off of my resume, it's my first nursing job and I've worked at this hospital for two years.
Quote from WannaBNurseyI had my old manager cancel me from a shift that is a few days in advance, and I was told it would me marked as an unexcused absence (I didn't know you could have an unexcused absence, while giving 3 days notice).