Dysrhythmias (Including EKG
Strips) Exam Questions and
Answers
Normal Sinus Rhythm - Correct Answers: Refers to a rhythm that originates in the SA node @ a rate of
60-100 BPM and follows normal conduction pattern of the cardiac cycle.
Sinus Bradycardia - Correct Answers: The conduction pathway is the same as that in sinus rhythm but
the SA node fires @ a rate of less than 60 BPM. May be normal in athletes.
Symptomatic Sinus Bradycadia S/S - Correct Answers: Pale, cool skin, hypotension, weakness, angina,
dizziness or syncope, confusion or disorientation, and shortness of breath.
Symptomatic Sinus Bradycardia Tx - Correct Answers: Admin of atropine, or pacemaker therapy. If due
to drugs; must be held, discontinued, or dosages reduced.
Sinus Tachycardia - Correct Answers: The conduction pathway is the same as that in sinus rhythm. The
discharge rate from the sinus node increases because of vagal inhibition or sympathetic stimulation. the
sinus rate is 101-200 BPM.
Sinus Tachycardia S/S - Correct Answers: Dizziness, dyspnea, and hypotension due to decreased CO.
Increased O2 consumption due to increased HR. Angina or an increase in infarction size may accompany
this disorder in pts with CAD or AMI
Sinus Tachycardia Tx - Correct Answers: The underlying cause determines treatment, eg.) pain
management if d/t pain. In stable pts vagal manuevers can be attempted. Beta-adrenergic blockers
Atrial Flutter - Correct Answers: An atrial tachydysrhythmia identified by recurring, regular, sawtooth-
shaped flutter waves that originate from a single ectopic focus in the right atrium, less commonly, can
occur in left atrium.
Strips) Exam Questions and
Answers
Normal Sinus Rhythm - Correct Answers: Refers to a rhythm that originates in the SA node @ a rate of
60-100 BPM and follows normal conduction pattern of the cardiac cycle.
Sinus Bradycardia - Correct Answers: The conduction pathway is the same as that in sinus rhythm but
the SA node fires @ a rate of less than 60 BPM. May be normal in athletes.
Symptomatic Sinus Bradycadia S/S - Correct Answers: Pale, cool skin, hypotension, weakness, angina,
dizziness or syncope, confusion or disorientation, and shortness of breath.
Symptomatic Sinus Bradycardia Tx - Correct Answers: Admin of atropine, or pacemaker therapy. If due
to drugs; must be held, discontinued, or dosages reduced.
Sinus Tachycardia - Correct Answers: The conduction pathway is the same as that in sinus rhythm. The
discharge rate from the sinus node increases because of vagal inhibition or sympathetic stimulation. the
sinus rate is 101-200 BPM.
Sinus Tachycardia S/S - Correct Answers: Dizziness, dyspnea, and hypotension due to decreased CO.
Increased O2 consumption due to increased HR. Angina or an increase in infarction size may accompany
this disorder in pts with CAD or AMI
Sinus Tachycardia Tx - Correct Answers: The underlying cause determines treatment, eg.) pain
management if d/t pain. In stable pts vagal manuevers can be attempted. Beta-adrenergic blockers
Atrial Flutter - Correct Answers: An atrial tachydysrhythmia identified by recurring, regular, sawtooth-
shaped flutter waves that originate from a single ectopic focus in the right atrium, less commonly, can
occur in left atrium.
