Atrial fibrillation is characterized by _____. a. one P wave ...

[soccerdreamer_17]

Atrial fibrillation is characterized by _____.
 
  a. one P wave before each QRS and a regular ventricular rate of 60 to 100 beats/min
  b. an erratic, wavy baseline and irregular ventricular rhythm
  c. saw-tooth or picket-fenceshaped waveforms preceding each QRS
  d. P waves occurring before, during, or after the QRS complex; when seen, they are inverted

Question 2

The most common type of supraventricular tachycardia (SVT) is _____.
 
  a. atrial tachycardia
  b. atrial flutter
  c. AV reentrant tachycardia (AVRT)
  d. AV nodal reentrant tachycardia (AVNRT)

[momtoalll]

Answer to Question 1

B
Characteristics of atrial fibrillation:
Rhythm Ventricular rhythm usually irregularly irregular
Rate Atrial rate usually 400 to 600 beats/min; ventricular rate variable
P waves No identifiable P waves, fibrillatory waves present; erratic, wavy baseline
PR interval Not measurable
QRS duration 0.11 seconds or less unless abnormally conducted

Answer to Question 2

D
AVNRT is the most common type of SVT. It is caused by reentry in the area of the AV node.

[soccerdreamer_17]

TYSM

[sultansheikh]

Gracias!