Flashcards in Lecture 4 part 3 Deck (12):
What does a 12 Lead ECG show you?
A 360 degree view of the heart using 12 viewpoints
What are the 2 forms of troponin?
Trop I (elevated for 2 weeks), Trop T (shows small amounts of damage)
What is MONA?
Morphine, Nitroglycerin, Oxygen, Aspirin (160-325 mg)
Why give morphiene in MI?
Reduce pain/anxiety. Need to be careful with hypotension, hypovalaemia, resp depression
Why give Nitro-glycerin in an MI?
Dilates coronary vessels, reduce systemic vascular resistance and preload (careful with hypotension)
Why give oxygen in an MI?
70% of ACS pts demonstrate hypoxemia, may limit ischaemic myocardial damage
Why give aspirin during an MI? and how much?
Irreversible inhibition of platelet aggregation
Additional nursing care post MI?
24 hr bed rest, light diet, continuous assessment/obs, anti-arrhythmic, analgesics, anti-coagulants, patient education (avoid strenuous activity), rehab and continuing education/support
What do inotropes do?
Alter the stretch of cardiac and other smooth muscle fibres
A1 + A2 -> vasoconstriction, B1 +B2 _> cause vasodilation and increased HR/contractibility
Secondary prevention of MI (behavioural interventions)
Pt education, 30-60 mins Physical activity with risk assessment, stop smoking, diet: fibre, omega 3
Meds used in ACS
Antiplatelet agent (aspirin/clopidorgrel), Lipid lowering agent (statin), Antihypertensive agent (Beta blocker, ACE-1, Aldactone