EKG Academy Study Notes Latest Update.

EKG Academy Study Notes Latest Update. 1) Rhythm Regularity 2) Heart Rate 3) P wave morphology 4) P R interval or PRi 5) QRS complex duration and morphology The 5 steps of rhythm analysis should be followed when analyzing any rhythm strip. Analyze tracings in the following sequence. Carefully measure from the tip of one R wave to the next, from the beginning to the end of the tracing. A rhythm is considered "regular or constant" when the distance apart is either the same or varies by 1 ½ small boxes or less from one R wave to the next R wave. Step 1: Rhythm Regularity Previous Play Next Rewind 10 seconds Move forward 10 seconds Unmute 0:02 / 0:15 Full screen Brainpower Read More 1500 technique = measure small squares R-R; divide 1500/# 300 technique = measure large squares between R-R; divide 300/# Step 2: Heart Rate If it varies by 2 or more small boxes When is the rhythm considered irregular? Six second technique Simply count the number of cardiac complexes in six seconds and multiply by ten. What HR technique will you use for irregular rhythms? Lead II is most commonly referenced in cardiac monitoring In this training module, lead two will specifically referenced unless otherwise specified. Step 3: P-wave Morphology (shape) 1) Measurement of the PR interval reflects the amount of time from the beginning of atrial depolarization to the beginning of ventricular depolarization. 2) Plainly stated, this measurement is from the beginning of the P wave to the beginning of the QRS complex. 3) The normal range for PR interval is: 0.12 - 0.20 seconds (3 to 5 small boxes) 4) It is important that you measure each PR interval on the rhythm strip. 5) Some tracings do not have the same PRi measurement from one cardiac complex to the next. Sometimes there is a prolonging pattern, sometimes not. 6) If the PR intervals are variable, report them as variable, but note if a pattern is present or not.