STUDY OBJECTIVE: To determine the distribution and concentration of aerosol particles caused by an ultrasonic (Harmonic) scalpel during simulated surgical use. DESIGN: Prospective experimental analysis (Canadian Task Force classification II-1). SETTING: Standard operating room. MATERIALS: Lean pork, lean beef, water, and blood, and the Harmonic scalpel with ball, curved scalpel, and cutting tips. INTERVENTIONS: Real-time sampling of airborne aerosols was performed over 6-second sampling periods. MEASUREMENTS AND MAIN RESULTS: Blood and tissue particles increased significantly during use of the Harmonic scalpel. Local exhaust evacuation methods diminished these concentrations. CONCLUSIONS: The Harmonic scalpel causes formation of bioaerosols that are composed of material of respirable size. When this device is used, a local exhaust system or smoke-evacuation method should be activated to reduce exposure to blood, blood by-products, and potentially infectious materials.
STUDY OBJECTIVE: To determine the distribution and concentration of aerosol particles caused by an ultrasonic (Harmonic) scalpel during simulated surgical use. DESIGN: Prospective experimental analysis (Canadian Task Force classification II-1). SETTING: Standard operating room. MATERIALS: Lean pork, lean beef, water, and blood, and the Harmonic scalpel with ball, curved scalpel, and cutting tips. INTERVENTIONS: Real-time sampling of airborne aerosols was performed over 6-second sampling periods. MEASUREMENTS AND MAIN RESULTS: Blood and tissue particles increased significantly during use of the Harmonic scalpel. Local exhaust evacuation methods diminished these concentrations. CONCLUSIONS: The Harmonic scalpel causes formation of bioaerosols that are composed of material of respirable size. When this device is used, a local exhaust system or smoke-evacuation method should be activated to reduce exposure to blood, blood by-products, and potentially infectious materials.
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