Question 1
A rhythm originating in the sinus node should NOT have which of the following?
◦ Regularly spaced QRS complexes
◦ Heart rate of 60—100
◦ Absent QRS complexes
◦ Narrow QRS complexes of uniform shape
Question 2
Arrhythmias are
◦ abnormal heart rhythms.
◦ rhythms that cause no symptoms.
◦ rhythms originating in the sinus node.
◦ normal heart rhythms.