Pre-PA student here, bear with me....
7) Initial troponin readings do not rule out an MI. You would run serial troponins, every 2-3 hours. Troponin elevation can often be delayed by up to 6 hours I believe after an infarction.
8. The patient being tachycardic, tachypneic, and with an elevated white count means that the SIRS (Systemic inflammatory response syndrome) criteria is met, and sepsis protocols should be activated (i.e. NS or LR bolus' of 30 mL/kg of patient's weight administered, barring no hx of renal failure or CHF, draw a lactate and 2 sets of blood cultures and send to lab, and administer a broad spectrum antibiotic)
9) Not sure
10) monitor patient's blood pressure and oxygenation closely, as both can tank quickly with severe sepsis. Continue to give antibiotics and arrange for transfer