It takes a lot of knowledge and practice in order to know how to calculate blood pressure. Obtaining blood pressure measurement is not just about getting the systolic as well as diastolic pressure of the blood, it is also about the concepts behind a specific blood pressure result.
There are times that the blood pressure measurement is affected by the activity of the person or the foods that he consumed prior to it. Identifying and giving proper interventions will be a great factor in obtaining a precise measurement.
Adding to that, it is also important to consider the normal range of blood pressure for a specific age group. Children and adults do have different normal blood pressure range. Knowing this will minimize mistakes on giving proper interventions.
Lastly, obtaining blood pressure should be done with intervals. If ever it is not obtained on the left arm, it should be taken on right arm so that it will not cause alterations of results.