Exam (elaborations)
BASIC DYSRHYTHMIA-RELIAS STUDY GUIDE #1
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- BASIC DYSRHYTHMIA
- Institution
- BASIC DYSRHYTHMIA
BASIC DYSRHYTHMIA-RELIAS STUDY GUIDE #1
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BASIC DYSRHYTHMIA-RELIAS STUDY GUIDE #1Normal sinus rhythm - correct answer heart rhythm originating in the sinoatrial node with
a rate in patients at rest of 60 to 100 beats per minute
Sinus arrhythmia - correct answer appearance is almost normal:
Respiratory - circulatory interaction
Rate increases with inspiration (in=in)
Sinus bradycardia - correct answer <60
Normal sinus rhythm
Sinus tachycardia - correct answer >100 (100-150)
Normal sinus rhythm
Premature atrial contraction (pac) - correct answer heart rate: depends on underlying
rhythm
Regularity: interrupts the regularity of underlying rhythm
P-wave: can be flattened, notched, or unusual. May be hidden within the t wave
Pri: measures between .12-.20 seconds and can be prolonged; can be different from
other complexes
Qrs: <.12 seconds
Sinus arrest/pause - correct answer - sa node doesn't fire
- notice absence of p-wave for a complete cycle (a missed cycle)
Length of pause ≠ multiple of normal rate (block)
Atrial fibrillation (a-fib) - correct answer an irregular and often very fast heart rate
originating from abnormal conduction in the atria
Atrial flutter - correct answer irregular beating of the atria; often described as "a-flutter
with 2 to 1 block or 3 to 1 block"
Junctional rhythm - correct answer 40-60 regular!
-impulse from av node w/ retro/antegrade transmission
- p wave often inverted/buried/follow qrs
- slow rate
- narrow qrs (not wide like ventricular)
Junctional tachycardia - correct answer >60 bpm (ms. K; 150-250)
- key: will be regular (consistent)
- av junction produces a rapid sequence of qrs-t cycles
- p-wave often inverted/buried/follow qrs
Premature junctional contraction - correct answer inverted p wave or hidden p wave
Pri<0.12 or none
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