Pulsed ultrasound is associated with what effect on open wounds?

Pulsed ultrasound is associated with what effect on open wounds?

• A. Accelerated healing
• B. Delayed healing
• C. Increased infection
• D. No effect

Answer: (A)

Pulsed ultrasound delivers energy in short bursts with a low duty cycle, producing mainly non-thermal, mechanical effects rather than heat. In open wounds, these mechanical effects—such as cavitation, microstreaming, and increased cell membrane permeability—stimulate processes that drive repair: fibroblast activity and collagen synthesis, angiogenesis, epithelialization, and better nutrient delivery to the wound bed. The pulsed mode also minimizes thermal buildup, making it safer for delicate tissue and helping reduce edema to support healing. Because of these actions, accelerated healing is the most consistent outcome with pulsed ultrasound on open wounds.

Pulsed ultrasound delivers energy in short bursts with a low duty cycle, producing mainly non-thermal, mechanical effects rather than heat. In open wounds, these mechanical effects—such as cavitation, microstreaming, and increased cell membrane permeability—stimulate processes that drive repair: fibroblast activity and collagen synthesis, angiogenesis, epithelialization, and better nutrient delivery to the wound bed. The pulsed mode also minimizes thermal buildup, making it safer for delicate tissue and helping reduce edema to support healing. Because of these actions, accelerated healing is the most consistent outcome with pulsed ultrasound on open wounds.