Final answer:
The mean arterial pressure (MAP) of a person with a blood pressure of 128/68 mm Hg would be 88 mm Hg, which is calculated by adding one-third of the difference between the systolic and diastolic pressures to the diastolic pressure.
Step-by-step explanation:
To calculate the mean arterial pressure (MAP) of a person with a blood pressure of 128/68 mm Hg, you can use the following formula: MAP ≈ Diastolic pressure + 1/3(Systolic pressure - Diastolic pressure). Therefore, the MAP would be 68 mm Hg + 1/3(128 mm Hg - 68 mm Hg), which equals 68 mm Hg + 1/3(60 mm Hg), and further simplifies to 68 mm Hg + 20 mm Hg, resulting in a MAP of 88 mm Hg. This value generally falls within the normal range of 70-110 mm Hg. When the MAP is below 70 mm Hg or above 110 mm Hg, it may indicate health issues such as insufficient blood flow (ischemia) or excessive pressure on arterial walls, respectively.