During spinal anesthesia in a healthy patient, the sensory level rises to C8. The patient will most likely have
(A) hoarseness due to block of the recurrent laryngeal nerve
(B) numbness over the clavicles
(C) impaired resting ventilation
(D) numbness of the little finger
(E) inability to raise his arm
D
Failure to block the musculocutaneous nerve adequately during the axillary approach to brachial plexus block will result in inadequate anesthesia of the
(A) thumb and index finger
(B) dorsum of the wrist
(C) lateral aspect of the forearm
(D) lateral aspect of the elbow
(E) medial aspect of the upper arm
C
Each of the following values is associated with acute tubular necrosis EXCEPT
Which of the following is most likely to occur during mediastinoscopy?
(A) Chylothorax
(B) Compression of the innominate artery
(C) Injury to the superior laryngeal nerve
(D) Tracheal tear
(E) Venous air embolism
B
A 35-year-old man has acute onset of low back pain, lower extremity weakness, and bladder dysfunction. He had a lumbar laminectomy two years ago. A myelogram shows disk herniation at L4-5. The most appropriate management is
(A) bed rest
(B) administration of a nonsteroidal anti-inflammatory agent
To predict the requirement for isoflurane in milliliters of vapor per minute during closed circuit anesthesia, each of the following is necessary EXCEPT
Nine months after sustaining an injury to the left forearm, a 30-year-old woman has diffuse, burning pain on the anterior aspect of the forearm and posterior aspect of the hand and discoloration of the skin in the affected areas. The patient should be informed that
(A) if left untreated, muscle atrophy may develop in the involved limb
(B) if left untreated, the pain will remain well localized
(C) physical therapy is not indicated
(D) the symptoms are directly related to the severity of the initial injury
(E) the symptoms are most likely secondary to underlying peripheral vascular disease
Surgery is cancelled 10 minutes after initiation of intravenous regional anesthesia with 50 ml of lidocaine 0.5%. To terminate anesthesia safely, what is the most appropriate timing for deflating the tourniquet?
(A) Immediately if benzodiazepines have been administered
(B) Immediately after intravenous administration of ephedrine 10 mg
(C) Immediately, followed by repeated reinflation and deflation
(D) In no less than 20 minutes after initial injection
(E) In no less than 45 minutes after initial injection
A 30-year-old man is brought to the emergency department after being rescued from a house fire. With the trachea intubated and FiO2 at 1.0, arterial blood gas values are PaO2 495 mmHg, PaCO2 28 mmHg, and pH 7.28. Hemoglobin saturation measured by co-oximeter is 50%. The most appropriate next step is to
A 45-year-old man is scheduled for exploratory laparotomy. Six months ago, he received doxorubicin (Adriamycin) therapy for testicular cancer. This patient is at increased risk for