ECG Rhythm Strip exam 2024

What are the five steps of calculating a heart rhythm? - correct answer -Step 1: Calculate rate. -Step 2: Determine regularity. -Step 3: Assess the P waves. -Step 4: Determine PR interval. -Step 5: Determine QRS duration. Schematic representation of a normal ECG. - correct answer What is the first option for calculating heart rate? - correct answer Count the number of R waves in a 6 second rhythm strip, then multiply by 10. What is the second option for calculating heart rate? - correct answer -Find a R wave that lands on or next to a bold line. -Count the number of large boxes to the next R wave. If the second R wave is 1 large box away the rate is 300, 2 boxes - 150, 3 boxes - 100, 4 boxes - 75, etc. What is the sequence of heart rates to memorize? - correct answer - 50 How do you determine regularity of an ECG? - correct answer Look at the R-R distances. If they are equidistant, the ECG is regular. What is a P wave? - correct answer During normal atrial depolarization, the main electrical vector is directed from the SA node towards the AV node, and spreads from the right atrium to the left atrium. This turns into the P wave on the ECG. What questions do you ask to assess the P waves (4)? - correct answer -Are there P waves? -D