Arterial oxyhemoglobin desaturation develops more rapidly following apnea in a pregnant patient at term than in a nonpregnant patient with a large intra-abdominal tumor. Which of the following findings in pregnancy is the most likely cause?
You are called to anesthetize a patient for an emergency pericardial window for a large pericardial effusion. Which of the following drugs is most appropriate for initiation of anesthesia?
A 70-year-old man undergoes cross clamping of the aorta for repair of an abdominal aneurysm. Which of the following methods is most appropriate for decreasing hypotension associated with removal of the cross clamp?
(A) Administration of a phenylephrine bolus when the cross clamp is removed
(B) Correction of any base deficit with sodium bicarbonate during clamping
(C) Decrease of anesthetic to allow blood pressure to increase to 20% above preclamp levels
(D) Volume loading to increase pulmonary artery occlusion pressure prior to removal
(E) Infusion of dopamine 10 minutes prior to removal
A 70-kg patient with no acute bleeding has a preoperative platelet count of 40,000/mm3. Following preoperative transfusion of platelets 10 units, the predicted platelet count would be
The newborn infant of an 18-year-old heroin addict has an initial Apgar score of 1. After intubation of the trachea and ventilation with pure oxygen, the Apgar score is 3 at five minutes. Appropriate management at this time would include administration of each of the following EXCEPT