Can what I eat help prevent future kidney stones? You may be able to prevent future kidney stones by making changes in how much sodium, animal protein, calcium, or oxalate you consume. A dietitian who specializes in kidney stone prevention can help you plan meals. You can make changes to what you eat based on the type of kidney stone you had.
Here are some simple steps on how to measure the PR interval: 1  Find the P-wave on the EKG strip. 2  Determine where the PR interval is, and to do this you start measuring at the beginning of the p-wave until the beginning of the QRS complex. 3  Count the SMALL boxes between there measurements.  Remember each box represents 0.04 seconds.
In addition to the wave components of the ECG, there are intervals and segments. An interval is part of the ECG containing at least one wave and a straight line. For example, the PR interval includes the P wave and the connecting line before the QRS complex. The PR interval represents the time it takes for the impulse sent from the SA node to travel to the ventricles.