It is important to avoid unnecessarily high current power. High current can cause collateral damage to the urethral sphincter and the Nn. erigentes.

Monopolar current application leads to a spray coagulation that means a wide area is affected by the coagulation effect.

Bipolar current application leads to a very precise effect. As a result an injured vessel can just be sealed by touching the vessel lumen with the loop and directly applying coagulating HF-current to the structure.

The use of bipolar energy in transurethral resection techniques requires specific technical modifications of the generators – an effective bipolar generator device is working with a so-called high cut modification allowing the device to start and ignite the plasma around the bipolar resection loop.

If the tissue especially the prostate capsule is cut or teared by applying bipolar coagulation to seal vessels, the effect has to be decreased.