Which factor would likely cause an increase in blood pressure with aging?

Which factor would likely cause an increase in blood pressure with aging?

• A. Increased arterial compliance.
• B. Decreased arterial compliance and increased arterial stiffness.
• C. Higher resting metabolic rate.
• D. Decreased body mass index.

Answer: (B)

As individuals age, there are notable changes in the cardiovascular system, particularly concerning the arteries. Decreased arterial compliance, which means the arteries become less able to expand and contract with blood flow, and increased arterial stiffness contribute to elevated blood pressure. This loss of elasticity in the arterial walls is primarily due to structural changes such as the accumulation of collagen and reduced elasticity of the smooth muscle cells. As arterial compliance decreases, the blood vessels cannot accommodate the volume of blood pumped during each heartbeat as effectively, leading to higher systolic blood pressure. Increased arterial stiffness also results in a diminished ability to handle the surge of blood flow, exacerbating this issue. In contrast, increased arterial compliance would help lower blood pressure, while factors like a higher resting metabolic rate or decreased body mass index generally do not have a direct impact on the age-related increases in blood pressure. Thus, the combination of decreased arterial compliance and increased stiffness directly correlates with the rising blood pressure often observed in aging populations.

As individuals age, there are notable changes in the cardiovascular system, particularly concerning the arteries. Decreased arterial compliance, which means the arteries become less able to expand and contract with blood flow, and increased arterial stiffness contribute to elevated blood pressure. This loss of elasticity in the arterial walls is primarily due to structural changes such as the accumulation of collagen and reduced elasticity of the smooth muscle cells.

As arterial compliance decreases, the blood vessels cannot accommodate the volume of blood pumped during each heartbeat as effectively, leading to higher systolic blood pressure. Increased arterial stiffness also results in a diminished ability to handle the surge of blood flow, exacerbating this issue.

In contrast, increased arterial compliance would help lower blood pressure, while factors like a higher resting metabolic rate or decreased body mass index generally do not have a direct impact on the age-related increases in blood pressure. Thus, the combination of decreased arterial compliance and increased stiffness directly correlates with the rising blood pressure often observed in aging populations.