Complex sentence: Supportive therapy is given if necessary, including respiratory assistance, maintenance of body temperature, and administration of intravenous sodium bicarbonate as an antidote, which has been shown to be an effective treatment for resolving the metabolic acidosis and cardiovascular complications of TCA poisoning.
Split into simpler sentences: Supportive therapy is given if necessary, including respiratory assistance, maintenance of body temperature, and administration of sodium bicarbonate as an antidote. Sodium bicarbonate is given intravenously and has been shown to be an effective treatment for resolving the metabolic acidosis and cardiovascular complications of TCA poisoning.