Pulsed diathermy is associated with which of the following tissue changes?

Pulsed diathermy is associated with which of the following tissue changes?

• A. Increase collagen bundles
• B. Increase bone density
• C. Decrease capillary permeability
• D. Increase muscle atrophy

Answer: (A)

Pulsed diathermy promotes tissue healing by delivering energy that stimulates cellular activity, including fibroblasts. When fibroblasts are activated, they synthesize and reorganize collagen, leading to increased formation and alignment of collagen bundles in the healing tissue. That is why the tissue change most consistently associated with pulsed diathermy is an increase in collagen bundles. The other options don’t fit as well: increasing bone density isn’t a typical effect of diathermy, capillary permeability is usually increased with heating (vasodilation) rather than decreased, and muscle atrophy would not be a desired or expected outcome from this therapy.

Pulsed diathermy promotes tissue healing by delivering energy that stimulates cellular activity, including fibroblasts. When fibroblasts are activated, they synthesize and reorganize collagen, leading to increased formation and alignment of collagen bundles in the healing tissue. That is why the tissue change most consistently associated with pulsed diathermy is an increase in collagen bundles.

The other options don’t fit as well: increasing bone density isn’t a typical effect of diathermy, capillary permeability is usually increased with heating (vasodilation) rather than decreased, and muscle atrophy would not be a desired or expected outcome from this therapy.