Pulsed ultrasound on the injury response process is associated with which of the following?

Pulsed ultrasound on the injury response process is associated with which of the following?

• A. Increase cellular histamines
• B. Decrease cellular histamines
• C. No change in histamines
• D. Increase protein synthesis

Answer: (A)

Pulsed ultrasound delivers energy in short bursts, producing non-thermal mechanical effects rather than heating the tissue. Those mechanical effects can stimulate mast cells in the injured area to degranulate, releasing histamines. The histamine release then causes vasodilation and increased capillary permeability, contributing to the early inflammatory response and helping bring nutrients and immune cells to the site. So, the association is with an increase in cellular histamines. Decreasing histamines, no change, or focusing on protein synthesis aren’t the primary acute actions attributed to pulsed ultrasound in this context.

Pulsed ultrasound delivers energy in short bursts, producing non-thermal mechanical effects rather than heating the tissue. Those mechanical effects can stimulate mast cells in the injured area to degranulate, releasing histamines. The histamine release then causes vasodilation and increased capillary permeability, contributing to the early inflammatory response and helping bring nutrients and immune cells to the site. So, the association is with an increase in cellular histamines. Decreasing histamines, no change, or focusing on protein synthesis aren’t the primary acute actions attributed to pulsed ultrasound in this context.