Dysrhythmias (Including EKG Strips)
Verified | Latest 2024 Version
Normal Sinus Rhythm
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
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.
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Symptomatic Sinus Bradycadia S/S
Pale, cool skin, hypotension, weakness, angina, dizziness or syncope, confusion or
disorientation, and shortness of breath.
Symptomatic Sinus Bradycardia Tx
Admin of atropine, or pacemaker therapy. If due to drugs; must be held, discontinued, or
dosages reduced.
Sinus Tachycardia
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
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
The underlying cause determines treatment, eg.) pain management if d/t pain. In stable
pts vagal manuevers can be attempted. Beta-adrenergic blockers
