In the U.S. in 2014 less than 5 girls were given the name. Less than 5 boys were given the name. View the Monna Name Popularity Page to see how the popularity trend for Monna has changed since 1880, or to compare the popularity of Monna to other names. Monna is a variant spelling of Mona.n the U.S. in 2014 less than 5 girls were given the name. Less than 5 boys were given the name. View the Monna Name Popularity Page to see how the popularity trend for Monna has changed since 1880, or to compare the popularity of Monna to other names. Monna is a variant spelling of Mona.
1 2. 2. 2  The average duration of the QRS complex in 100 normal adults was 0.0777 second. 3  Fifty of the patients were males with an average duration of the QRS time interval of 0.0833 second, and 50 were females with a shorter time interval of 0.0722 second.
Atrial rate can be calculated by determining the time interval between P waves. Click here to see how atrial rate is calculated. The period of time from the onset of the P wave to the beginning of the QRS complex is termed the P-R interval, which normally ranges from 0.12 to 0.20 seconds in duration. This interval represents the time between the onset of atrial depolarization and the onset of ventricular depolarization.