हाम्रो हस्पिटल रिसर्च एण्ड ट्रमा सेन्टर प्रा.लि. - Heart rate Heart rate can be calculated using the following method (if regular): Count the number of large squares present within one R-R interval
![Normal Duration Times - Normal Function of the Heart - Cardiology Teaching Package - Practice Learning - Division of Nursing - The University of Nottingham Normal Duration Times - Normal Function of the Heart - Cardiology Teaching Package - Practice Learning - Division of Nursing - The University of Nottingham](https://www.nottingham.ac.uk/nursing/practice/resources/cardiology/images/normal_intervals.gif)
Normal Duration Times - Normal Function of the Heart - Cardiology Teaching Package - Practice Learning - Division of Nursing - The University of Nottingham
![Frontiers | The Use of Percent Change in RR Interval for Data Exclusion in Analyzing 24-h Time Domain Heart Rate Variability in Rodents Frontiers | The Use of Percent Change in RR Interval for Data Exclusion in Analyzing 24-h Time Domain Heart Rate Variability in Rodents](https://www.frontiersin.org/files/Articles/443526/fphys-10-00693-HTML/image_m/fphys-10-00693-g001.jpg)
Frontiers | The Use of Percent Change in RR Interval for Data Exclusion in Analyzing 24-h Time Domain Heart Rate Variability in Rodents
![Using Bazett's formula to calculate the QTc from the QT and R-R intervals | Download Scientific Diagram Using Bazett's formula to calculate the QTc from the QT and R-R intervals | Download Scientific Diagram](https://www.researchgate.net/publication/323523805/figure/fig3/AS:601644140097552@1520454549886/Using-Bazetts-formula-to-calculate-the-QTc-from-the-QT-and-R-R-intervals.png)
Using Bazett's formula to calculate the QTc from the QT and R-R intervals | Download Scientific Diagram
![SOLVED: R-R interval to measure it. Record in Lab Data Divide 60 by the R-R interval to calculate heart rate. Record in Lab Data P wave from ECG recording. Record in Lab SOLVED: R-R interval to measure it. Record in Lab Data Divide 60 by the R-R interval to calculate heart rate. Record in Lab Data P wave from ECG recording. Record in Lab](https://cdn.numerade.com/ask_images/9dd59fecedae4dfd82fe08ce9656622a.jpg)