Abstract
Electrocautery using high-frequency current is a relatively new technique in the tracheobronchial
field for the destruction of tumor or inflammatory tissues. High-frequency surgery
uses the thermal effect of the electric current, avoiding the electrolytic and capacitance
effects. Soft coagulation (white coagulation) is induced by slow heating up to 70
to 100°C, causing tissue vaporization. This procedure can be done using a rigid or
a flexible bronchoscope. Unipolar electrodes are currently used rather than bipolar
probes. Strict rules of isolation must be applied concerning patient, endoscopist,
and equipment. High-frequency electrocautery has an immediate effect, somewhat “laserlike.”
It's a simple technique for rapid palliation and immediate tumor debulking in patients
with tracheobronchial lesions. The equipment is relatively cheap, but the use of specially
insulated fiberoptic bronchoscopes is highly recommended. Morbidity is low, but further
clinical and experimental studies are needed to evaluate the complication rate. High-frequency
electrocautery could be very useful, particularly in countries where treatment by
means of laser is not available because of the prohibitive cost.
Key Words:
Electrocautery - bronchoscopy - bronchial tumors
