Basic Dysrhythmia-Relias Study Guide Graded A+

Sinus Arrest/Pause {Ans: - 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)}2nd Degree Heart Block (Mobitz II) {Ans: Rare, but more serious Sudden appearance of a nonconducted P-wave P-waves are nl, but some aren't followed by a QRS complex PR & RR intervals are constant}Supraventricular Tachycardia (SVT) {Ans: an abnormal heart rhythm arising from aberrant electrical activity in the heart; originates at or above the AV node}Ventricular fibrillation (V-fib) {Ans: abnormal heart rhythm which results in quivering of ventricles}Atrial paced rhythm {Ans: spike before P wave}Junctional Tachycardia {Ans: >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}Ventricular paced rhythm {Ans: ventricular contractions which occur in cases of complete heart block.}normal sinus rhythm {Ans: heart rhythm originating in the sinoatrial node with a rate in patients at rest of 60 to 100 beats per minute}Premature Junctional Contraction {Ans: Inverted p wave or hidden p wave PRI<0.12 or none Normal QRS}failure to sense (pacemaker) {Ans: }Atrial Fibrillation (A-Fib)