You can do it! Do not be intimidated! I worked my first years in Nursing at Level one Trauma centers. Then I became a traveler, and they sent me ALL over, including a hospital with literally only 6 inpatient beds. It was one of the hardest assignments I had because as you know, at night, staffing was very limited. It's a lot harder to run a code with only a PA and 2 nurses.
There are so many unusual medical conditions that no one expects you to know how to treat them. In a large trauma center ICU you will have so many more resources to learn and guide you in strange syndromes and their care than you do now. You can EASILY learn to use new monitors and equipment, you are a Nurse- smart and adaptable.
One thing you can do to make yourself more attractive is to be sure to have all certifications you can have, possibly including a Monitor tech type certificate. In our ICU our the MD expects the nurses to read 12 leads and look at the CXR and interpret it- and we are a small rural hospital (150 beds, 16 ICU).
Don't sell yourself short.
You have real Nursing experience-with VERY strong assessment skills. You can totally do this and I think if you point out the positives you'll soon find yourself with lots of offers. GOOD LUCK! and let us know how it goes.