First Aid: Cardio III

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First Aid: Cardio III
2011-10-11 12:51:05
internal medicine rotation cardio

internal medicine rotation cardio
Show Answers:

  1. Cause of short QT
  2. Arrhythmia that TCAs can trigger
    Torsade de pointes
  3. Way to distinguish A flutter from A fib
    • A flutter has regular, distinct P waves in a sawtooth patter
    • A fib is irregularly irregular
  4. Medication that should be given to stable patients with A fib
    Heparin, to prevent clot formation
  5. Drug that can be used to temporarily slow a rapid SVT
  6. What drugs should NOT be given to a patient with WPW?
    • Adenosine
    • Beta blockers
    • CCBs
    • Digoxin
    • ("ABCD"--all meds that slow conduction at the AV node)
  7. Criteria for first degree heart block
    PR interval over 0.2 s
  8. Causes of Wenckebach (second degree heart block, with progressively elongating PR interval, followed by a dropped beat)
    • Inferior wall MI
    • Digitalis toxicity
    • Increased vagal tone
  9. Causes of Mobitz II (fixed PR interval with a regularly dropped beat)
    • Inferior wall or septal MI
    • Conduction system disease
  10. Symptoms associated with HTN (usually do not manifest until stage III, which is bp > 180-209/110-119)
    • Light-headedness
    • Occipital headaches in the morning
    • Epistaxis
    • Hematuria
    • Blurred vision
    • Angina
    • CHF
  11. How is mean arterial pressure calculated?
    (2diastolic + systolic)/3
  12. Why should a chest film be performed on a patient with suspected MI?
    To rule out the possibility of aortic dissection, which would make thrombolysis a VERY bad idea
  13. Difference between a true aneurysm and a pseudoaneurysm
    • A true aneurysm involves all 3 layers of the arterial wall
    • A pseudoaneurysm only involves the intima and the media