Answer 40

40.  Choice D is the correct answer.  There is an positive deflection of the QRS complex in both leads I and avF which indicates a normal axis.  Extreme right axis deviation has a negative deflection of both leads I and avF.  Right axis deviation has a negative deflection of the QRS complex in lead one and a positive deflection in lead avF.  Left axis deviation has a positive deflection of the QRS complex in lead  I and negative deflection of lead avF.

Question 40

40.  Please choose the correct interpretation of the EKG listed below:

A.  Right Axis Deviation
B.  Left Axis Deviation
C.  Extreme Right Axis Deviation
D.  Normal Axis

Answer 39

39.  Choice D is the correct answer.   Ventricular fibrillation comes from multiple ectopic foci firing from within the ventricle so there is in irregular baseline.  Ventricular tachycardia comes from one ectopic focus so there is an irregular wide complex tachycardia.  Torsades has a winding up and down appearance to it.  Asystole is a simple flat line.

Question 39

39.  Please interpret the EKG strip listed below:

A.  Asystole
B.  Torsades de Pointes
C.  Ventricular Tachycardia
D.  Ventricular Fibrillation

Answer 38

38.  Choice D is the correct answer.  There is T wave inversion in leads V2-V5 which is consistent with anterior ischemia.  There is no ST elevation so choice A and choice are incorrect.  There is no ST depression or T wave inversion in leads II, III and avF so choice D is incorrect.

Question 38

38.  Please interpret the EKG listed below:

A.  Inferior Infarction
B.  Inferior Ischemia
C.  Anterior Infarction
D.  Anterior Ischemia

Answer 37

37.  Choice B is the correct answer.  Sinus arrhythmia the pacemaker still originates from the SA node but the pacemaking activity is irregular varying with inspiration and expiration.  Sinus block is when an unhealthy SA node quits pacing activity for at least one complete cycle.  Premature atrial contraction is when the P wave occurs earlier than expected.  First degree AV block is when there is a prolonged PR interval and no dropped QRS complexes.