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basic arrhythmia
test 5
| Question | Answer |
|---|---|
| electrical impulses discharged from cardiac cells outside the SAN | ectopic |
| PVC | premature ventricular contraction |
| VPC | ventricular premature contraction |
| blood flow during a PVC | stops |
| characteristics of a PVC include the QRS complex being | wide and bizarre and different |
| characteristics of a PVC usually include the absence of a | P wave |
| characteristics of a PVC usually include a T wave in the | opposite direction compared to the QRS complex |
| characteristics of a PVC usually include the R to R interval being | doubled |
| PVCs with uniform morphology are called | unifocal premature ventricular contractions |
| PVCs with different morphology are called | multifocal premature ventricular contractions |
| PVC with an R wave that lands on the T wave of the preceding cardiac cycle | R on T phenomenon |
| two PVCs in immediate succession | couplet or pair |
| three or more PVCs in immediate succession | run |
| succession | one after another |
| PVC occuring every second cardiac cycle | bigeminy |
| PVCs occuring every third cardiac cycle | trigeminy |
| PVCs occuring every fourth cardiac cycle | quadrigeminy |
| PVCs must be reported immediately if two occur in immediate succession | couplet or pair |
| PVC must be reported immediately if three or more PVCs occur in immediate succession | run |
| it is important to state the | number of PVCs in the run |
| PVCs must be reported immediately if its R wave lands on the T wave of the preceding cardiac cycle | R on T phenomenon |
| PVCs must be reported immediately if they have different morphology | multifocal |
| PVCs must be reported immediately if there are more than | six per minute |
| ventricular tachycardia is a tachyarrhythmia caused by ectopic electrical impulses originating in the | ventricles |
| ectopic | displaced |
| characteristics of V-tach the distance between R waves is consistent which means the rhythm is | regular |
| characteristics of V-tach usually include a heart rate of | 150 - 250 beats per minute |
| characteristics of V-tach usually include the absence | P waves |
| characteristics of V-tach usually include QRS complexes | greater than 0.12 of a second |
| VT with a heart rate less than 150 bpm | slow ventricular tachycardia |
| VT with a heart rate greater than 250 bpm | ventricular flutter |
| VT must be reported immediately because it can quickly transition to a chaotic life threatening arrhythmia abbreviated VF | ventricular fibrillation |
| ventricular fibrilation means the heart is twitching instead of | contracting |
| VF causes blood flow | to stop |
| VF is a chaotic | life threatening arrhythmia |
| VF lasting four to six minutes can cause | brain death |
| characteristics of VF usually include the absence of | p waves |
| characteristics of VF usually include the absence of | QRS complexes |
| characteristics of VF usually include the absence of a | heart rate |
| two types of VF include | coarse ventricular fibrillation |
| two types of VF | fine ventricular fibrillation |
| VF requires immediate implementation of a | code blue |
| implementation | put into effect |
| idioventricular rhythm is an indication of a sign | dying heart |
| agonal rhythm has a heart rate less than | 40 bpm |
| AIVR | accelerated idioventricular rhythm |
| AIVR heart rate is greater than | `40 bpm |
| AIVR has absence of | P waves |
| AIVR has complexes greater than | 0.12 of a second |
| asystole means an absence of cardiac electrical activity represented by a | straight line |
| Asystole | ventricular standstill or flatline |
| Asystole means the heart is not | contracting |
| Asystole causes blood flow to | stop |
| Asystole requires immediate implementation of a | code blue |
| code blue | cardiopulmonary arrest |
| application of a controlled electric shock to the heart to arrest life threatening arrhythmias | defibrillation or electrical cardioversion |