Page 1 of 204
CEN EXAM AND STUDY GUIDE NEWEST 2025 TEST
BANK| COMPLETE 450 REAL EXAM QUESTIONS AND
CORRECT DETAILED ANSWERS (VERIFIED ANSWERS)
GRADED A+| CERTIFIED EMERGENCY NURSING EXAM
PREP 2025/2026 (BRAND NEW!!)
MAP calculation .....ANSWER..... [( 2xDBP) + SBP] / 3
cushing's triad .....ANSWER..... widened pulse pressure,
bradycardia, and irregular respirations
(indicative of increased ICP)
chronotropes .....ANSWER..... affect the heart rate at the SA node
(cardizem)
inotropes .....ANSWER..... affect contractility (dopamine)
dromotropes .....ANSWER..... affect automaticity of the heart
ACE inhibitors adverse effects .....ANSWER..... dry cough,
angioedema, renal impairment
,Page 2 of 204
ARB (sartans) .....ANSWER..... block angiotensin 2 receptors,
resulting in vasodilation
antidote for vasopressor extravasation .....ANSWER.....
phentolamine (regitine)
Prinzmetal angina .....ANSWER..... -episodic CP unrelated to
exertion
-ST elevation is variant and resolves when vasospasm resolves
inferior MI ST elevation .....ANSWER..... leads II, III AVF
Lateral MI ST elevation .....ANSWER..... I, AVL, V5, V6
Anterior ST elevation .....ANSWER..... V1-V4
inferior MI vessel involvement .....ANSWER..... RCA (feeds SA and
AV nodes)
inferior MI presentation .....ANSWER..... Epigastric pain
bradycardia and heart blocks
,Page 3 of 204
anterior MI vessel involvement .....ANSWER..... LAD (supplies L
ventricle)
anterior MI presentation .....ANSWER..... crushing CP
"I can't breathe"
Ventricular failure and arrhythmias
right ventricle-involved MI .....ANSWER..... -get right sided ekg
-NO nitro or morphine`
tx for MI .....ANSWER..... oxygen
aspirin
nitroglycerin
PCI within 90 mins
beta-blockers for HTN
**reperfusion dysrhythmias are a good sign with PCI
, Page 4 of 204
aortic dissection BP .....ANSWER..... difference of 20 mmHg or
more in SBP b/t arms
aortic dissection tx .....ANSWER..... #1 priority is 2 large bore
IV's
maintain HR of 60-80 (beta blocker)
maintain BP of 100-120 (nitro)
post ROSC .....ANSWER..... keep O2 sat 90%
CO2 35-45
SBP >90
TTM at 32-36 celsius
medications that cause prolonged QT interval .....ANSWER.....
erythromycin, levofloxacin, cipro
haldol
CEN EXAM AND STUDY GUIDE NEWEST 2025 TEST
BANK| COMPLETE 450 REAL EXAM QUESTIONS AND
CORRECT DETAILED ANSWERS (VERIFIED ANSWERS)
GRADED A+| CERTIFIED EMERGENCY NURSING EXAM
PREP 2025/2026 (BRAND NEW!!)
MAP calculation .....ANSWER..... [( 2xDBP) + SBP] / 3
cushing's triad .....ANSWER..... widened pulse pressure,
bradycardia, and irregular respirations
(indicative of increased ICP)
chronotropes .....ANSWER..... affect the heart rate at the SA node
(cardizem)
inotropes .....ANSWER..... affect contractility (dopamine)
dromotropes .....ANSWER..... affect automaticity of the heart
ACE inhibitors adverse effects .....ANSWER..... dry cough,
angioedema, renal impairment
,Page 2 of 204
ARB (sartans) .....ANSWER..... block angiotensin 2 receptors,
resulting in vasodilation
antidote for vasopressor extravasation .....ANSWER.....
phentolamine (regitine)
Prinzmetal angina .....ANSWER..... -episodic CP unrelated to
exertion
-ST elevation is variant and resolves when vasospasm resolves
inferior MI ST elevation .....ANSWER..... leads II, III AVF
Lateral MI ST elevation .....ANSWER..... I, AVL, V5, V6
Anterior ST elevation .....ANSWER..... V1-V4
inferior MI vessel involvement .....ANSWER..... RCA (feeds SA and
AV nodes)
inferior MI presentation .....ANSWER..... Epigastric pain
bradycardia and heart blocks
,Page 3 of 204
anterior MI vessel involvement .....ANSWER..... LAD (supplies L
ventricle)
anterior MI presentation .....ANSWER..... crushing CP
"I can't breathe"
Ventricular failure and arrhythmias
right ventricle-involved MI .....ANSWER..... -get right sided ekg
-NO nitro or morphine`
tx for MI .....ANSWER..... oxygen
aspirin
nitroglycerin
PCI within 90 mins
beta-blockers for HTN
**reperfusion dysrhythmias are a good sign with PCI
, Page 4 of 204
aortic dissection BP .....ANSWER..... difference of 20 mmHg or
more in SBP b/t arms
aortic dissection tx .....ANSWER..... #1 priority is 2 large bore
IV's
maintain HR of 60-80 (beta blocker)
maintain BP of 100-120 (nitro)
post ROSC .....ANSWER..... keep O2 sat 90%
CO2 35-45
SBP >90
TTM at 32-36 celsius
medications that cause prolonged QT interval .....ANSWER.....
erythromycin, levofloxacin, cipro
haldol
