A patient has an anterior neck injury, hoarseness, labored respirations, subcutaneous emphysema, and laryngeal crepitus following a motor vehicle accident. Which of the following is the best method of securing the airway in this situation?
(A) Blind nasotracheal intubation
(B) Lightwand intubation
(C) Retrograde wire-guided intubation
(D) Tracheostomy
(E) Transtracheal jet ventilation
D
Which of the following is LEAST likely to decrease myocardial oxygen supply?
(A) Administration of enflurane
(B) Epidural anesthesia to a sensory level of T6
(C) Increased pulmonary artery occlusion pressure
(D) Hypocarbia (PaCO, 25 mmHg)
(E) Metabolic acidosis (pH 7.20)
E
A burn is found at the site of the electrocautery pad. Which of the following is most likely?
(A) The electrosurgical unit was in the bipolar mode
(B) The electrocautery pad became partially detached
(C) The electrosurgical unit ground wire was severed
A healthy, but obese, 110-kg woman is scheduled for gastric stapling. Compared with that required at her ideal weight, the dose of thiopental required for anesthetic induction would likely be increased because of changes in
Which of the following combinations of hemoglobin, blood gases, and cardiac output provides the greatest delivery of oxygen to tissue? (Hb, PaO2, SaO2, CO)
A meconium-stained, full-term infant has an initial Apgar score of 2. The oropharynx is suctioned and the infant is placed on a heated table. Which of the following is the most appropriate next step in management of the airway?
(A) If the oropharynx is clear, observation for respiratory effort
(B) Placement of an oxygen mask and application of positive pressure to clear the airway
(C) Nasotracheal suctioning
(D) Tracheal suctioning using the endotracheal tube
A 70-kg 24-year-old man with bilateral pneumonia whose lungs are being mechanically ventilated has the following measured parameters: tidal volume 750 ml; FiO2 0.7; rate 12/min; positive end-expiratory pressure 10 cmH2O; PaO2 75 mmHg; PaCO2 55 mmHg; pH 7.30. Which of the following alterations should be made in the ventilatory settings?