preferred_name: Monitor for signs and symptoms of carbonic acid excess and respiratory acidosis (e.g., hand tremor with extensions of arms, confusion, drowsiness progressing to coma, headache, slowed verbal response, nausea, vomiting, tachycardia, warm sweaty extremities, pH level less than 7.35, PaCO2 level greater than 45 mm Hg, associated hypochloremia, and possible HCO3 excess)