Need help to build a short essay with references

Okay here is the scenario:

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The time is 1900 hours. You are working in a small, rural hospital. It has been snowing heavily all day, and the medical helicopters at the large regional medical center, 4 hours away by car (in good weather), have been grounded by the weather until morning. The roads are barely passable. W.R., a 48-year-oldconstruction worker with a 36-pack-year smoking history, is admitted to your floor with a diagnosis of rule out myocardial infarction (R/O MI). He has significant male-pattern obesity (“beer belly,” large waist circumference) and a barrel chest, and he reports a dietary history of high-fat food. His wife brought him to the emergency department (ED) after he complained of (C/O) unrelieved “indigestion.” His admission vital signs (VS) were 202/124, 96, 18, and 98.2° F. W.R. was put on oxygen (O2) by nasal cannula (NC) titrated to maintain SaO2 (arterial oxygen saturation) over 90%, and an IV of nitroglycerin (NTG) was started in the ED. He was also given aspirin 325 mg and was admitted to Dr. A.’s service. There are plans to transfer him by helicopter to the regional medical center for a cardiac catheterization in the morning when the weather clears. Meanwhile you have to deal with limited laboratory and pharmacy resources. The minute W.R. comes through the door of your unit, he announces he’s just fine in a loud and angry voice and demands a cigarette.

HERE IS THE QUESTION:

Angina is not always experienced as “pain” (as many people understand pain).How would you describe symptoms you want him to warn you about? Why is this important?

I NEED AT LEAST 3 REFERENCES WITH PROPER APA reference to the essay such as “According to (AUTHOR), blah blah blah”

NO NEED TO BE FORMAL I JUST NEED SOME MORE INFORMATION TO ADD ON MY ESSAY.

I NEED ATLEAST 450 to 550 WORDINGS.