The physician prescribed taking blood pressure assessments on a patient, lying and standing, every 4 hours, for 24 hours. Determine the percentage difference between the first two systolic readings (140 mm Hg lying and 125 mm Hg standing).
A) 7
B) 9
C) 11
D) 13

Question

Quizplus · Accepted Answer

To estimate the difference between the two systolic readings (140 mm Hg lying and 125 mm Hg standing), subtract 125 mm Hg from 140 mm Hg. To determine the percent, create a fraction by dividing the difference (15 mm Hg) by the larger number or total (140 mm Hg). Divide: 15/140 = 3/28. To change a fraction into a decimal, divide the numerator by the denominator. Add decimal points in the dividend and quotient as needed: 3/28 = 0.107. Carry out to the hundredths place. To round off a decimal, the final number is dropped. When the final number is 5 or greater, drop the number and increase the adjacent number by 1. Therefore, 0.107 = 0.11. Next, change the decimal to a percent by moving the decimal point two places to the right, then write the percent sign: 0.11 = 11%.

The Physician Prescribed Taking Blood Pressure Assessments on a Patient