What is the reported effect of continuous ultrasound on blood flow after treatment?

What is the reported effect of continuous ultrasound on blood flow after treatment?

• A. Increase in blood flow 45-70 hours after treatment
• B. Decrease in blood flow during treatment
• C. No change in blood flow
• D. Immediate increase in blood flow during treatment

Answer: (A)

Continuous ultrasound raises tissue temperature, which triggers vasodilation and increases local blood flow. This thermal effect tends to persist beyond the treatment session, so the most consistent report is a rise in blood flow observed in the hours after treatment. The 45-70 hour window reflects this delayed perfusion response, which supports ongoing delivery of oxygen and nutrients for healing and helps clear metabolites as healing progresses. So, the best answer aligns with a delayed increase in blood flow after the treatment, rather than an immediate change during treatment. A decrease during treatment or no change would not fit the typical vascular response to the thermal effects of continuous ultrasound. An immediate increase during treatment describes a timing that doesn’t match the reported after-treatment effect.

Continuous ultrasound raises tissue temperature, which triggers vasodilation and increases local blood flow. This thermal effect tends to persist beyond the treatment session, so the most consistent report is a rise in blood flow observed in the hours after treatment. The 45-70 hour window reflects this delayed perfusion response, which supports ongoing delivery of oxygen and nutrients for healing and helps clear metabolites as healing progresses.

So, the best answer aligns with a delayed increase in blood flow after the treatment, rather than an immediate change during treatment. A decrease during treatment or no change would not fit the typical vascular response to the thermal effects of continuous ultrasound. An immediate increase during treatment describes a timing that doesn’t match the reported after-treatment effect.