Exam 47: Discontinuing Ventilatory Support

A patient whom you are trying to wean below 5 cm H₂O pressure support develops respiratory muscle fatigue. Which of the following would you recommend to overcome this problem? I. Make sure there is adequate O2 transport or cardiac output. II. Make sure that the patient is adequately nourished. III. Check and replace any depleted electrolytes. IV. Clear secretions and provide bronchodilation.

In considering a patient for endotracheal tube extubation, which of the following procedures would you recommend to determine the risk of postextubation upper airway obstruction?

What are some factors that indicate a patient's readiness for extubation? I.adequate oxygenation or ventilation with spontaneous breathing II.minimal risk for upper airway obstruction III.adequate airway protection or minimal aspiration risk IV.adequate clearance of pulmonary secretions

An alert patient receiving ventilatory support through a demand flow intermittent mandatory ventilation system exhibits clinical signs of an increased work of breathing whenever you try to decrease the mandatory rate below 6/min. In order to aid in weaning this patient, which of the following would you recommend?

All of the following drug categories can depress ventilatory drive and hinder weaning except:

Which of the following metabolic factors can hinder weaning? I.excessive carbohydrate feeding II.amino acid-based parenteral nutrition III.calorie intake = 1.5 * resting energy expenditure (REE)