EKG Stuff

Question 1

right axis deviation

Answer 1

Is a heart condition wherein the electrical conduction of the heart has an electrical axis greater than +90°.
COPD, pulmonary arterial hypertension, or large pulmonary embolism. In the latter, for example, a clot in the pulmonary arteries requires more work of the right ventricle to push blood past it.

Question 2

Left axis deviation

Answer 2

left anterior hemiblock
Q waves of inferior myocardial infarction
artificial cardiac pacing
emphysema
hyperkalaemia
Wolff-Parkinson-White syndrome - right sided accessory pathway
tricuspid atresia
ostium primum ASD
injection of contrast into left coronary artery

Question 3

Axis Determination

Answer 3

1. Find the most equiphasic limb lead.
2. Look at the lead running at 90 degree to this
3. impulse is mostly positive? axis to towards this lead
4. impulse is mostly negative? axis towards this lead
5. truely equiphasic? yes you have found the cardiac axis
6. slightly more positive/negative? move the axis 15 degrees towards or away

Question 4

Brugada Criteria

Answer 4

Brugada syndrome is a disorder characterized by sudden death associated with one of several ECG patterns characterized by incomplete right bundle-branch block and ST-segment elevations (concave, scoop) in the anterior precordial leads(V1,2,).