Following blunt trauma to the chest, a patient has tachycardia, hypotension, and markedly distended neck veins. Each of the following is expected EXCEPT
(A) cardiac output of 2.1 L/min
(B) mixed venous oxygen saturation of 75%
(C) pulmonary artery occlusion pressure of 25 mmHg
(D) pulmonary artery diastolic pressure of 25 mmHg
A 30-year-old woman has an abrupt change from sinus to nodal rhythm with unchanged heart rate on ECG during induction of halothane anesthesia. Which of the following is the most likely result of this change?
In a patient with chronic congestive heart failure, the safest pharmacologic approach to brain swelling during a craniotomy is
(A) dexamethasone
(B) furosemide
(C) mannitol
(D) thiopental
(E) urea
B
During induced hypotension for clipping of a cerebral aneurysm in a 20-degree head-up position, the arterial pressure transducer should be zero referenced at which level?
(A) External auditory meatus
(B) Midaxillary line at the fifth intercostal space
(C) Sternal notch
(D) Thyroid cartilage
(E) Top of the cranium
A
A morbidly obese patient is to undergo gastric stapling during general anesthesia. Following preoxygenation and induction, the oxygen saturation decreases after 40 seconds of laryngoscopy and attempted intubation. The rapid onset of arterial desaturation is most likely due to
In a patient with ventricular fibrillation refractory to repeated attempts at defibrillation and epinephrine administration, the most appropriate management is administration of
A 4-year-old child has just undergone a one-hour tonsillectomy with a volatile anesthetic, nitrous oxide, and oxygen. Which of the following will result in the most rapid emergence?
A 2.2-kg, 6-hour-old neonate is to undergo gastrostomy followed by repair of a tracheoesophageal fistula. During induction with halothane, air, and oxygen, the abdomen becomes distended. Appropriate management is to
(A) intubate and assist spontaneous ventilation
(B) intubate and control ventilation
(C) insert an orogastric tube
(D) allow the patient to breathe spontaneously by mask until gastrostomy