echelon Exam Rated 100% Correct!!

sinus bradycardia - -less than 60 beats per minute -P wave in front of every QRS -PR--0.12 to 0.20 -QRS less than 0.12 -if symptomatic--atropine, pacemaker sinus tachycardia - -treat underlying cause (fever, pain, etc.) Sinus Arrhythmia - irregular with breathing--HR increases with inspiration and decreases with expiration -only treat if hemodynamically compromised--atropine SA block - -dropped interval/pause -if hemodynamically compromised--atropine, permanent pacemaker sinus arrest - - SA node doesn't fire - notice absence of P-wave for a complete cycle (a missed cycle) -no treatment if episodes are transient otherwise temporary pacing or atropine Premature Atrial Contraction (PAC) - if symptomatic--digitalis, beta blockers, antiarrhythmics atrial flutter - -Sawtooth pattern -250 to 350 beats -PRI cant determine** -QRS less than .12 -need to control ventricular rate and convert the rhythm/anticoagulatea fib - -no p wave -PRI cant measure** -QRS les than 0.12 -rate control and anti coag