ECG ANALYSIS RHYTHM RECOGNITION (RELIAS) WITH VERIFIED SOLUTIONS

what does each small box represent .04 seconds what does 1 large box (5 small boxes) represent .20 seconds Brainpower Read More Previous Play Next Rewind 10 seconds Move forward 10 seconds Unmute 0:01 / 0:15 Full screen what do 5 large boxes represent 1 second primary pacemaker SA node w/expected firing rat of 60-100 bpm backup pacemaker AV node w/expected firing rate of 40-60 bpm final pacemaker ventricles w/expected firing rate less than 40 bpm a normal PR interval is .12-.20 seconds a normal QRS interval is < .12 seconds (.04-.11) a normal QT interval is .36-.44 seconds the ST segment should be ____ with the _____ level w/ the baseline ST segment elevation and depression is an indication of ischemia or injury to the heart what does P wave represent on the ECG atrial depolarization what does P wave represent on the ECG ventricular depolarization what does P wave represent on the ECG repolarization of ventricles rhythms that originate above the ventricles normally have a ___ QRS complex narrow QRS complex rhythms that originate in the ventricles normally have a ___ QRS complex wide QRS complex A Flutter rate: 250 - 350 bpm HR varies!! regularity: regular or irregular P waves: "think of a shark fin or waves" PR: not applicable - you don't measure it QRS: < .12 secs A Fib rate: fast & unmeasurable regularity: irregular P wave: NON. wavy baseline btwn QRS instead PR: not applicable - you don't measure it QRS: <.12 secs (1*AVB) NO DROPPED QRS PR interval > .20 secs (2*AVB) PR wave gets longer + longer UNTIL QRS is DROPPED 2*AVB type 2 PR intervals remain constant, but some QRS is DROPPED 3*AVB rate: 60 - 100 HR PR intervals vary R-R constant, P-P constant some QRS complexes are DROPPED normal sinus rhythm rate: 60 - 100 bpm regularity: regular PR: upright., matching, married to QRS PR: 0.12 - .20, constant QRS: < .12 secs sinus bradycardia (SB) < 60 bpm regularity: regular PR: upright, matching, married to QRS PR: 0.12 - .20, constant QRS: < .12 secs sinus tachycardia (ST) > 101 bpm regularity: regular PR: upright, matching, married to QRS PR: 0.12 - .20, constant QRS: < .12 secs sinus arrhythmia (SA) rate: varies with respiratory pattern. you would still log HR when documenting regularity: irregular. longest R-R cycle exceeds shortest by .16 or greater [ inconsistent & irregular ] P waves: upright, matching, married to QRS PR: .12 - .20 secs. constant QRS: <.12 secs sinus exit block missing ONE P-QRS-T sinus arrest missing MORE THAN ONE P-QRS-T premature atrial contraction (PAC) rate: can occur at any rate regularity: regular but interrupted by premature beats P wave: shaped differ from sinus Ps, is premature and abnormal in size and shape PR: .12 - .20 secs QRS: <.12 secs premature junctional contraction (PJC) what three things could the P wave be? 1. inverted + too close 2. missing 3. in the ST segment