BASIC DYSRHYTHMIA-RELIAS MEDICAL EMERGENCY 2023 QUESTIONS AND ANSWERS (RELIAS)
heart rhythm originating in the sinoatrial node with a ratein patients at rest of 60 to 100 beats per minute
...
BASIC DYSRHYTHMIA-RELIAS MEDICAL EMERGENCY 2023 QUESTIONS AND ANSWERS (RELIAS)
heart rhythm originating in the sinoatrial node with a ratein patients at rest of 60 to 100 beats per minute
1. Sinus Arrhyth- mia
Appearance is ALMOST NORMAL: Respiratory - Circulatory interaction
Rate INCREASES with INSPIRATION (IN=IN)
2. Sinus Bradycar-dia <60
normal sinus rhythm
3. Sinus Tachycar-dia >100 (100-150)
normal sinus rhythm
4. Premature Atri-al Contraction (PAC)
Heart Rate: Depends on underlying rhythm
Regularity: Interrupts the regularity of underlying rhythmP-Wave: can be flattened, notched, or unusual. May be hidden within the T wave PRI: measures between .12-.20 seconds and can be pro-longed; can be different from other complexes
QRS: <.12 seconds
5. Sinus Ar-
rest/Pause
- SA node doesn't fire
- notice absence of P-wave for a complete cycle (a missedcycle) length of pause ` multiple of normal rate (block)
6. Atrial Fibrillation(A- Fib)
an irregular and often very fast heart rate originating fromabnormal conduction in the atria
7. Atrial Flutter irregular beating of the atria; often described as "a-flutter with 2 to 1
block or 3 to 1 block"
8. Junctional
Rhythm
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)
9. JunctionalTachy- cardia
>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
10. Premature Junc- tional Contrac- tion
Inverted p wave or hidden p wave PRI<0.12 or none
Normal QRS
11. Supraventricular Tachycardia (SVT)
an abnormal heart rhythm arising from aberrant electrical activity in the heart; originates at or above the AV node
12. First degree heart block
atrioventricular (AV) block in which the atrial electrical impulses are delayed by a fraction of a second beforebeing conducted to the ventricles
13. 2nd degree heart block type 1 (Wenkebach)
Progressively longer PR interval until the P wave is notfollowed by a QPR
15.15.
2nd Degree Heart Rare, but more serious
Block (Mobitz II) Sudden appearance of a nonconducted P-wave
P-waves are nl, but some aren't followed by a QRS com-plex PR & RR intervals are constant
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