Navigation registration completed uneventfully.During biopsy attempts, received "reconnect locatable guide" error message.Error disappeared when lg unlocked, reappeared when lg relocked.Further attempts to continue navigation would not work because emn estimated position of lg began to fluctuate wildly (discordance between virtual bronchoscopic view when lg in ewc vs when lg was out of ewc).There was no unusual pressure or force applied to the scope or lg during the procedure.All cords were disconnected/reconnected without improvement.Lg replaced, error no longer present.Suspect lg malfunctioned.
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