In the general election, facing Democratic nominee, Senator Barack Obama of Illinois, McCain was trailing during most of the season, only gaining a lead in national polls for a period after the Palin announcement and the 2008 Republican National Convention.
monopolar electrocautery (unipolar electrocautery) an electrocautery in which current is applied through a handheld active electrode and travels back to the generator through an inactive electrode attached to the patient (the grounding pad), so that the patient is part of the electrical circuit.Also called unipolar electrocautery.n electrocautery in which current is applied through a handheld active electrode and travels back to the generator through an inactive electrode attached to the patient (the grounding pad), so that the patient is part of the electrical circuit. Also called unipolar electrocautery.
The monopolar needle electrode is a stainless steel needle fully insulated with a thin insulating coating except for the tip. Solid needles are used for diagnostic purposes; for EMG-guided injection of botulinum toxin, the needle is hollow.