Diathermy has which effect on blood and fluid dynamics?

Diathermy has which effect on blood and fluid dynamics?

• A. Increase blood flow
• B. Decrease capillary pressure
• C. Reduce capillary growth
• D. Decrease fibroblast activity

Answer: (A)

Diathermy delivers deep heat that raises tissue temperature, which causes dilation of small blood vessels in the treated area. That vasodilation increases local blood flow, improving perfusion, oxygen delivery, and removal of waste products. This direct effect on the circulatory system is the reason it changes blood and fluid dynamics by increasing blood flow to the area. The other options don’t fit because decreasing capillary pressure isn’t the primary or typical result of heating, and heating generally supports healing processes rather than reducing capillary growth or fibroblast activity (in fact, heat can enhance fibroblast function and collagen synthesis).

Diathermy delivers deep heat that raises tissue temperature, which causes dilation of small blood vessels in the treated area. That vasodilation increases local blood flow, improving perfusion, oxygen delivery, and removal of waste products. This direct effect on the circulatory system is the reason it changes blood and fluid dynamics by increasing blood flow to the area.

The other options don’t fit because decreasing capillary pressure isn’t the primary or typical result of heating, and heating generally supports healing processes rather than reducing capillary growth or fibroblast activity (in fact, heat can enhance fibroblast function and collagen synthesis).