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NUR 339 ( LATEST 2024 / 2025 ) FINAL EXAM 1 | QUESTIONS & ANSWERS (SOLVED)
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NUR 339 ( LATEST 2024 / 2025 ) FINAL EXAM 1 | QUESTIONS & ANSWERS (SOLVED)
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NUR 339 Final Exam 11. left anterior descending artery and right coronary artery
left coronary artery splits and becomes
2. SA node
pacemaker of the heart
3. during diastole
coronary arteries are perfused
4. inner (subendocardium) to outside
damage to the heart usually begins in the
5. tachycardia
decreased coronary artery perfusion
6. heart damage, less perfusion
severe hypotension causes
7. preload
stretch of LV myocardial fibers at end of diastole filling volume of the heart determined by
venous return
8. diuretics
,decrease preload
9. afterload
resistance to ventricular ejection; pressure ventricle must overcome to pump out blood
10. heart valve stenosis
cusps are too stiff; unable to shut tightly; allowing regur- gitation; increased after load
11. use cardiac markers
diagnose non STEMI
12. 12 lead ECG
diagnose STEMI
13. medications that decrease afterload
ACE inhibitors, beta blockers, alpha blockers (lower BP)
14. Stable angina
short-lived, after exertion, exposure to cold/stress tx
received by rest or NTG
caused by fixed obstruction due to atherosclerosis
15. unstable angina (worse)
unpredictable, may occur at rest & usually prolonged new-onset/exertional with increase in
, severity
cause
atherosclerotic plaque disruption, abnormal constriction of coronary arteries
16. varient (Prinzmetal's, vasospastic)
cause
vasospasm rather than plaque may be associated w/ coronary stenosis but can occur w/o
presence of disease pain usually occurs at rest, during sleep, w/ minimal exercise or stress
cyclic pattern
tx
calcium channel antagonists, short & long-term nitrates
17. STEMI
ST elevation MI
transmural/Q-wave - full thickness of of ventricular wall thorough tissue death
18. non STEMI
non-ST elevation MI
subendocardial/non Q wave - involves inner 1/3 to 1/2 of ventricular wall not necessarily as bad
as other version
19. cardiac markers
creatine kinase (CK), myoglobin, troponin
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