Term
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Definition
upright P-wave in Lead II
PR 0.12-0.20s rate=60-100 |
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Term
| Junctional Rhythm (escape) |
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Definition
AV node conducts retrograde
inverted P following QRS rate=45-60 |
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Term
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Definition
All P waves produce a QRS
PR is too long >0.20 |
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Term
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Definition
| Some P waves not followed by QRS |
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Term
| Types of 2nd degree AV block |
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Definition
Wenckebach (Mobitz I)
Mobitz II
2:1 AV block |
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Term
|
Definition
2 pthw with different electric behavio
Unidirectional block
Slow conduction |
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Term
Wenckebach (Mobitz I)
site of block? pattern? |
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Definition
| PRogressive, PRolonged, PR segment then drop P; block @ AV node; grouped beats |
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Term
Mobitz II
location of block? pattern |
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Definition
| Constant PR for conducted beats; Wide QRS; dropped P; block @ His-purkinje |
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Term
|
Definition
alternating pattern of dropped and conducted P- waves; P=2x QRS
Narrow QRS: suggest Wenckebach
Wide QRS: suggests Mobitz II |
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Term
|
Definition
Complete block; Independent ventricular & atria rhythms;
Junctional escape: narrow QRS
Ventricular escape: wide QRS |
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Term
|
Definition
| sharp narrow spike preceeding P(atrium) or QRS(ventricle) |
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Term
|
Definition
>100 bpm; sinus tachy is most common
junctional tachy |
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Term
|
Definition
| early P-wave(rounder top)different in shape from sinus P-waves; |
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Term
| Premature Ventricular Complex |
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Definition
early QRS diff in shape from nl QRS;
No early different P-wave
PVC is large/wide;
T-wave in opposite direction |
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Term
| AV nodal reentrant tachycardia AVNRT |
|
Definition
paroxysmal arrhythmia
normal/narrow QRS; rapid onset
P-wave(retro)buried in QRS-->distortion |
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Term
AVNRT
Clinical: trt acute: Trt chronic |
|
Definition
most common in young(lesser sex) females
acute:carotid massg, valsalva, adenosine
chronic: Meds (B-block & CaC block)
Radiofreq ablation->slow pathw |
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Term
|
Definition
Sawtooth (II,III,aVF) distortion are ST or T-wave segments; 2:1 or 4:1 conduction
organized reentry @ 250-350 rate; |
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Term
|
Definition
chaotic inconsistent reentry
small rapid undulations w/o pattern (V1)
Ventricular rate: irregularly irregular |
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Term
|
Definition
Rate: B-blocker, Ca-blocker, negative dromotropic drugs (AV depressents)
Rhythm: Cardioversion or anti-arrhthmic
Aggr Rhythm: radiofreq abl (flutter) |
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Term
| Wolff-Parkinson-White syndrome |
|
Definition
rentry in accessory path; fusion beat;
supraventric tachy
Abnormal ECG: short PR, Wide QRS, delta wave(slurred upstroke of QRS)
Dangerous bc it can transmit A fib |
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Term
|
Definition
down AV node, up access pthw
similar trt to AVNRT |
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Term
|
Definition
stable: monomorphic: structural (scar)
unstable: polymorph:nl QT, irreg QRS
Polymorph: long QT: torsade de pointes
some point up/down |
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Term
|
Definition
Most dangerous form of arrhythmia
unstable multiple reentrant circuits
Immediate CPR followed by defibrillation |
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