How common are the following during and after a neck lift procedure? 1. Damage to the nerves in one's face? 2. Accidentally hitting a undiagnosed growth that would cause problems during surgery? If this is possible, how would a surgeon proceed? 3. Blood pressure to raise during surgery or weird response to anesthesia (how would the doctor's respond if this happens?) 4. Elevated blood pressure after surgery due to pain and anxiety?