Calculate ventricular rate:
1. Number of R-R intervals in 6 seconds times 10 (ECG paper is usually marked at the top in 3-second
increments, making a 6-second interval easy to identify.)
2. Number of large boxes between QRS complexes divided into 300
3. Number of small boxes between QRS complexes divided into 1500
1. Number of R-R intervals in 6 seconds times 10 (ECG paper is usually marked at the top in 3-second
increments, making a 6-second interval easy to identify.)
2. Number of large boxes between QRS complexes divided into 300
3. Number of small boxes between QRS complexes divided into 1500