10 Random Questions
After brachial plexus block, a patient has sensation over the inner aspect of the upper arm. Block of which of the following nerves would obtund this sensation?
- (A) Intercostobrachial
- (B) Median
- (C) Musculocutaneous
- (D) Radial
- (E) Ulnar
The most beneficial effect of continuous positive airway pressure in a newborn with respiratory distress syndrome is
- (A) increased functional residual capacity
- (B) decreased airway resistance
- (C) promotion of surfactant formation
- (D) increased alveolar PO2
- (E) maintenance of functional closure of the foramen ovale
A 20-year-old man is scheduled for emergency laparotomy for an abdominal stab wound. Ten minutes after induction with oxygen, thiopental, and succinylcholine, blood pressure is 220/120 mmHg and esophageal temperature is 39°C. ST-segment depression of 4 mm is noted in ECG lead V5. Which of the following is the most likely cause?
- (A) Adrenal laceration
- (B) Cocaine intoxication
- (C) Inadequate anesthesia
- (D) Malignant hyperthermia
- (E) Small cardiac puncture
Pulmonary artery diastolic pressure increases acutely from 10 to 20 mmHg in a 28-year-old man undergoing cervical laminectomy in the sitting position. The most appropriate first step in the management of this patient is to
- (A) administer furosemide
- (B) aspirate from the proximal port of the pulmonary artery catheter
- (C) inflate the balloon on the pulmonary artery catheter
- (D) place the patient in the left lateral decubitus position
- (E) start an infusion of nitroglycerin
Tingling in the fifth finger during spinal anesthesia is associated with anesthesia at which of the following dermatomes?
- (A) C4
- (B) C6
- (C) C8
- (D) T2
- (E) T4
Blind nasotracheal intubation is contraindicated in the presence of
- (A) a basilar skull fracture
- (B) a comminuted mandibular fracture
- (C) an orbital blow-out fracture
- (D) an unstable cervical spine fracture
- (E) a zygomatic arch fracture
The tracing indicates that the pacemaker generator is
- (A) malfunctioning
- (B) VVT sensing and capturing normally
- (C) VOO sensing and capturing normally
- (D) DVI sensing and capturing normally
- (E) VVI sensing and capturing normally
Which of the following statements regarding carbon monoxide poisoning is true?
- (A) Breathing 100% oxygen at 1 atmosphere reduces the carboxyhemoglobin half-life
- (B) Effective treatment includes administration of methylene blue
- (C) It is commonly associated with respiratory acidosis
- (D) It is incompatible with a normal Sp02 while breathing room air
- (E) The oxyhemoglobin dissociation curve is shifted to the right
A 68-year-old man with severe depression is scheduled for electroconvulsive therapy. He had a myocardial infarction two years ago and continues to have angina on exertion. Pretreatment with which of the following drugs is most likely to maintain stability during the procedure?
- (A) Esmolol
- (B) Fentanyl
- (C) Hydralazine
- (D) Lidocaine
- (E) Midazolam
Six hours after coronary artery bypass grafting, a pulmonary artery catheter oximeter shows a mixed venous hemoglobin oxygen saturation of 50%. This value may result from each of the following EXCEPT
- (A) anemia
- (B) fever
- (C) hypovolemia
- (D) respiratory alkalosis
- (E) shivering