Basic Dysrhythmia-Relias Study Guide Rated A+

Atrial paced rhythm {Ans: spike before P wave}Junctional Rhythm {Ans: 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)}2nd degree heart block type 1 (Wenkebach) {Ans: Progressively longer PR interval until the P wave is not followed by a QPR}Failure to capture (pacemaker) {Ans: }Premature Atrial Contraction (PAC) {Ans: 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}premature ventricular contraction (PVC) {Ans: a ventricular contraction preceding the normal impulse initiated by the SA node (pacemaker)}