Cardio 2

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  1. Types of MIs
    Type 1 is a spontaneous MI related to ischemia from a primary coronary event (e.g., plaque rupture, thrombotic occlusion). Type 2 is secondary to ischemia from a supply-and-demand mismatch. Type 3 is an MI resulting in sudden cardiac death. Type 4a is an MI associated with percutaneous coronary intervention, and 4b is associated with in-stent thrombosis. Type 5 is an MI associated with coronary artery bypass surgery
  2. Pericarditis
    Pericarditis causes widespread concave (“saddleback”) ST segment elevation with PR segment depression in multiple leads, typically involving I, II, III, aVF, aVL, and V2-6. There is reciprocal ST depression and PR elevation in leads aVR and V1. Spodick’s sign — a downward sloping TP segment — may also be seen.
  3. Benign Early Repolarization
    BER causes mild ST elevation with tall T-waves mainly in the precordial leads. Is a normal variant commonly seen in young, healthy patients. There is often notching of the J-point — the “fish-hook” pattern. The ST changes may be more prominent at slower heart rates and disappear in the presence of tachycardia.
  4. LVH
    • The Sokolow-Lyon
    • S in V1 + R in V5 or V6 (whichever is larger) ≥ 35 mm
    • R in aVL ≥ 11 mm
    • The Cornell criteria for LVH are:
    • S in V3 + R in aVL > 28 mm (men)
    • S in V3 + R in aVL > 20 mm (women)
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Cardio 2
2014-08-10 19:23:17

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