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← ScienceWhich risk increases when the resonant frequency diminishes in diathermy?
A)Increased targeted tissue impedance
B)Ineffective therapeutic heat application✓
C)Reduced wave penetration depth
D)Elevated skin cooling requirements
💡 Explanation
Ineffective heat application increases because lower frequencies in the resonant cavity reduce the efficiency of dielectric heating, the primary mechanism in diathermy. Therefore, energy dissipates before reaching targeted tissues, rather than producing therapeutic effects at depth with resonant impedance matching.
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