Flashcards in MI Deck (20)
What are the classical signs & symptoms of MI?
Central chest pain - "crushing", "tight band"
Radiation to left arm, jaw, back
What is a gastrointestinal differential diagnosis of MI?
How many times should angina spray be taken before phoning ambulance?
Twice - still chest pain, call ambulance
Chest pain >30 minutes
What are some of the predisposing factors to MI?
Peripheral arterial disease
What is the pathogenesis of an MI?
Atherosclerotic disease - plaque rupture (could be due to insertion of stent)
Aggressive clotting response causing thromboemboli
Coronary artery lumen occluded
Oxygen not able to perfuse myocardium
What are some of the complications that can occur following MI?
What ECG changes might be seen in an acute MI?
ST elevation in STEMI
ST depression - could be NSTEMI
Long term - pathological Q waves
Which ECG leads would show ST elevation in inferior MI?
AvF, 2, 3
Which ECG leads would show ST elevation in anterior MI?
Usually, V3 & V4
But, any of V2-V5
Which ECG leads would show ST elevation in anteroseptal MI?
Which ECG leads would show ST elevation in anterolateral MI?
V4-V6, AvL, 1
Which ECG leads would show ST elevation in a lateral MI?
1, 2, AvL
What is the initial treatment for patients presenting with acute MI?
Consider an anti-emetic
Which length of time determines the treatment for the patient?
Which treatments are available (dependant on the time passed from onset of symptoms)?
90 minutes: thrombolysis e.g. with streptokinase
What non-pharmacological treatment would be suggested to patient who had suffered from an MI?
What pharmacological treatment would you put a patient on following an MI?
Which blood test should be ordered both on admission and 12-16 hours later?
Troponin T and troponin I
Is the troponin blood test a specific, diagnostic marker for an MI?
No, it simply indicates damage to the myocardium