Which statement is not described as part of the injury response effects of diathermy?

• A. Causes direct cell lysis
• B. Penetrates deeper
• C. Comfortably warm
• D. Individual to patient

Answer: (A)

Diathermy heats deeper tissues by using high-frequency energy, producing a therapeutic warming effect that increases blood flow, metabolic activity, and tissue extensibility, with the degree of heating and depth varying between individuals. Direct cell lysis is not described as a normal injury response to diathermy; such destructive tissue damage would occur only with excessive heating or misuse, not as a typical outcome. The other statements fit the expected effects: heating reaches deeper tissues, the sensation is a comfortable warmth when used properly, and the response is individualized based on tissue properties and distance from the applicator.