Why does diastolic blood pressure tend to increase as total blood volume increases during intravenous fluid administration?

💡 Explanation

Diastolic pressure increases with rising blood volume because the increased volume leads to elevated blood viscosity. This elevated viscosity subsequently increases peripheral vascular resistance, therefore raising diastolic pressure, rather than changes in cardiac function or baroreceptor sensitivity.

• What causes increased susceptibility to infections when vitamin A deficiency impairs mucociliary clearance in the respiratory tract?
• Which risk increases as allergen-specific IgE production rises during the sensitization phase leading up to anaphylaxis?
• An elderly patient with declining muscle mass undergoes intense aerobic training; which outcome becomes more likely as increased mitochondrial activity occurs?
• Why does heart failure become likely in individuals with untreated beriberi?
• Why does histamine release in localized inflammation increase capillary permeability rather than decrease it, given the immune system's goal of containing infection?
• A patient with liver cirrhosis experiences increased drug sensitivity. Which mechanism explains why drugs persist longer in their system?