10 Random Questions
Which of the following is the most likely cause of dyspnea during spinal anesthesia to a T3 sensory level?
(A) Decreased abdominal muscle tone
(B) Decreased afferent input from the thoracic wall
(C) Increased dead space ventilation
(D) Increased intrapulmonary shunting
(E) Partial diaphragmatic paralysis
Reveal Answer
BASIC
Regional & Pain
A 40-year-old man is scheduled for emergency laparotomy for bowel obstruction. He is nauseated but has not vomited. Which of the following drugs administered intravenously preoperatively will decrease the risk for pulmonary aspiration?
(A) Atropine
(B) Droperidol
(C) Metoclopramide
(D) Ranitidine
(E) None of the above
Reveal Answer
Anesthesia for vaginal delivery is provided by block of spinal segments
(A) T10-11
(B) T8-12
(C) Ll-2
(D) S2-4
(E) L5-S1
Reveal Answer
The metabolism of which of the following hypotensive agents is most likely to be affected in patients with severe renal disease?
(A) Esmolol
(B) Hydralazine
(C) Nitroglycerin
(D) Nitroprusside
(E) Trimethaphan
Reveal Answer
BASIC
Pharmacology & Pharmacokinetics
Each of the following parameters of cerebral perfusion and metabolism is approximately equal to 50 EXCEPT
(A) cerebral oxygen consumption in ml O2/min for a normal adult
(B) lower limit of mean arterial pressure for cerebral autoregulation in mmHg
(C) normal cerebral blood flow in ml /100 g tissue/min
(D) PaO2 at which cerebral blood flow increases
(E) PaCO2 at which cerebral blood flow doubles
Reveal Answer
BASIC
Neuro
Which of the following statements concerning pulmonary function in patients with pulmonary fibrosis is true?
(A) Diffusion capacity is decreased
(B) Pulmonary artery diastolic-to-occlusion pressure gradients are normal
(C) Ventilation-perfusion relationships are normal
(D) Static pulmonary compliance is unchanged
(E) Mechanical ventilation with slow rate and large tidal volume is optimal
Reveal Answer
ADVANCED
Respiratory & Critical Care
Which of the following is the most appropriate drug to treat hypotension in patients with asymmetric septal hypertrophy (IHSS)?
(A) Amrinone
(B) Calcium chloride
(C) Dopamine
(D) Ephedrine
(E) Phenylephrine
Reveal Answer
ADVANCED
Cardiac
Compared with healthy persons, patients with myasthenic (Eaton-Lambert) syndrome have increased
(A) resistance to vecuronium
(B) response to neostigmine during reversal of muscle paralysis
(C) sensitivity to succinylcholine
(D) susceptibility to development of malignant hyperthermia
(E) weakness with repetitive activity
Reveal Answer
Which of the following is the most likely beneficial effect of hyperbaric oxygen therapy in a 24-year-old scuba diver with decompression sickness?
(A) Decreased production of carbon dioxide
(B) Decreased size of gas bubbles
(C) Increased functional residual capacity
(D) Reversal of membrane pressure effects
(E) Shift of the oxyhemoglobin dissociation curve to the left
Reveal Answer
ADVANCED
Respiratory & Critical Care
In a patient taking a beta-adrenergic blocker, the drug most likely to produce atrioventricular junctional block is
(A) diltiazem
(B) fentanyl
(C) halothane
(D) nifedipine
(E) verapamil
Reveal Answer
BASIC
Pharmacology & Pharmacokinetics