A 55-year-old man has quadriplegia after undergoing suboccipital craniotomy in the sitting position for treatment of acoustic neuroma. Which of the following is the most likely cause?
(A) Air embolism with the presence of a probe-patent foramen ovale
(B) Compression of the cervical cord related to neck flexion
(C) Jugular venous obstruction
(D) Postoperative tension pneumocephalus
(E) Sustained elevation of cerebral perfusion pressure
During attempted cannulation of the right internal jugular vein, the exploring needle goes lateral to the vein. Which of the following structures is most likely to be encountered?
Which of the following statements concerning successful blockade of the femoral nerve is true?
(A) It requires that a paresthesia be elicited prior to injection
(B) It provides motor blockade below the knee
(C) It is accomplished with an injection medial to the femoral artery
(D) It permits surgery for entrapment of the lateral femoral cutaneous nerve
(E) It provides anesthesia to the anterior thigh
E
The initial reduction in core temperature during general anesthesia is caused by
(A) ablation of thermoregulatory vasoconstriction
(B) conductive heat loss
(C) evaporative heat loss in the respiratory tract
(D) neuromuscular blockade
(E) redistribution of heat from the core to the periphery
E
Ten days after sustaining burns over 40% of his body surface area, a patient requires greater than expected doses of vecuronium for adequate relaxation of skeletal muscle. The primary cause is increased
Compared with the response of a normal patient, administration of a bolus dose of pancuronium (0.15 mg/kg) to a patient with cirrhosis and ascites would be associated with