Which of the Following May Cause a Sinus Bradycardia
Which of the following may cause a sinus bradycardia?
A) Stress or anxiety
B) Increased sympathetic tone
Which of the following correctly reflects the ECG criteria for a sinus rhythm?
A) More P waves than QRS complexes
B) P waves that look alike and upright in lead II, one before each QRS complex
C) Irregular atrial and ventricular rhythm
D) PR interval exceeding 0.20 second
Management of a patient with a sinus tachycardia might include _____.
A) identification and treatment of the underlying cause
B) administration of atropine
C) use of a pacemaker
D) vagal maneuvers, such as carotid sinus pressure
The rate of a sinus bradycardia is _____ beats/min.
A) slower than 60
B) 60 to 100
C) 80 to 120
D) faster than 100