<prompt> Which of the following does not represent a significant anaesthetic problem in the morbidly obese patient ?Difficulties in endotracheal intubationSuboptimal arterial oxygen tensionIncreased metabolism of volatile agentsDecreased cardiac output relative to total body mass  <response>: Cardiac output is increased not decreased in morbid obesity. There is difficult intubation, hypoxemia and rapid metabolism of volatile anesthetics. 