Cardio teaching Mary's Flashcards
What is troponin?
A cardiac enzyme that’s normally intracellular - hence if it is
What is the triad of acute coronary syndrome?
STEMI
NSTEMI
Unstable angina
Two best investigations for the heart
ECG
Troponin
What treatment does someone need if they have an MI?
MONA
Morphine
Oxgyen
Nitrates
Aspirin
PCI
Is there a rise in troponin in stable angina?
NO
NSTEMI diagnosis
ECG normal/ischemic changes
but trops are raised
Define STEMI
New ST elevation of >1mm in any two contiguous leads EXCEPT V2-3 (in these leads the cut off is >2mm in men and 1.5mm in women)
+ reciprocal ST depression helps confirm diagnosis
What does contiguous mean?
Next to each other
Where is the opposite of lead 3? I.e. where reciprocal depressions would be
aVL
Opposite of lead 2
aVR
What is the evolution of the ECG with MI?
Peaked T wave ST elevation Loss of R wave T wave inversion T wave normalisation and persisting Q wave (years later) persisting t wave elevation
What is a Q wave?
Abnormally large Q wave
What ecg changes would suggest ischemic changes?
T wave inversion or flattening
ST depression
What ECG changes would suggest ischemic changes?
T wave inversion or flattening
ST depression
What is AF?
The individual muscle fibres in the atria are contracting independently, hence there’s no p wave
