ALWAYS send or fax your resume with a cover letter and really sell yourself! If you apply for ER or even an urgent care center, stress you EMT experience and your calm and clear thinking in the VERY...
I don't think that will be a problem if you want to move on to ER or ICU. A lot of times they just ask for at least 1-3 years acute care experience. Now since you say rehab I assume you will be...