This may be of some help: http://http://books.google.com.au/books?id=LG2XHbEpWz4C&pg=PA607&dq=Critical+Thinking+in+the+Emergency+nursing&cd=7#v=onepage&q=Critical%20Thinking%20in%20the%20Emergency%20nursing&f=false I dont know if this will help you but one thing i have learnt is initiation of procedures i am not sure where you live, but here in Australia at the hospital were i work at we are able to initiate certain procedures for patients such iv cannulation, xrays, ECGS and blood tests. So say you are called to the triage desk to bring in a patient, you get there and the triage nurse tells you that there is a patient who has presented to the ER, they have driven themselves in and have had crushing chest pain. This is how i would go about managing them just by what i have been told first i would think differentials stemi, nstemi, chest infection, pneumonia, pneumothorax, pericarditis, pleuritic pain, muscular, just some of the things it could be. Next: I do my primary survey i begin this just by looking at them and when I bring them to their bed, ill quickly palpate their radial artery for 15 seconds, is it present? Tachy? Brady? Pop on some o2 via hudson mask, Get them undressed, start putting ecg dots on, while i am doing all this i am asking questions, about their pain, getting them to describe it and when it started, what it feels like etc., I can visualize their chest so i can assess their breathing, the rate, are they breathing rapid, shallow, deep, labored, there undressed and im putting the ecg dots on so i can see the rise and fall of there chest, color, symmetry, their respiratory effort, penetrating wounds? edema? Past chest surgery? By this time i am ready to print my ECG. I look at my ecg and it has st elevation in leads II, III, AVF Already in this time up until now in such a short period i have established that my patients: Airway: is patent he is talking describing his pain telling me that it started 5 hours ago while he was shopping for his sons birthday in 2 days, and have a pain scale as he describes it as a sudden crushing pain on a scale of 7 he states Breathing: I'm looking at his chest while the ecg is being processed and can see that its symmetrical, rise and fall is present there is some effort as seen by the mild use of his breathing accessory muscles. Circulation: Ive palpated his radial pulse the pulse is strong regular and 80 bpm so i can assume safely he a B/P of >80mmhg as he has a radial pulse present I can also say his GCS is 15 as his eyes are opened spontaneously, he is orientated and is conversing with me as he has told me he was out shopping for his sons birthday in 2 days and he is obeying commands when I asked him to lay still so i can print my ECG. In the space of a few minutes i can go to one of our doctors and tell them quick this patient is having an inferior MI , there pulse is 80 and B/P is >80mmhg as there is a radial pulse present and he has a RR of 26 with mild work of breathing. Go back give pain relief get my iv access take bloods send my bloods to path and request a FBE U+E and Ck Troponin and Initiate a mobile CXR. Hopefully by this time i have another nurse there helping me prepping the pt for cath lab. Critical thinking thinking it is thinking ahead time managing and planning ahead and being quick to intervene properly and safely and initiate procedures. When you get a patient try to think ahead, if you get a patient say with upper left abdomen think ahead what it could be pancreatitis, viral gastroenteritis and what you can for each one etc., Working in a ER i have found is always being one step ahead and if you find you dont understand something ask questions. The question that one day will save someones is the one you never asked no matter what it was. Experience will come but dont allow yourself to become intimidated and loose confidence in yourself and your abilities.