10 Random Questions
A 36-year-old woman develops acute airway obstruction 24 hours after total thyroidectomy. The most likely cause is
- (A) bilateral recurrent laryngeal nerve injury
- (B) unilateral recurrent laryngeal nerve injury
- (C) hypocalcemia
- (D) subglottic edema
- (E) tracheomalacia
Statistical analysis of 20 patients shows a mean cardiac output (CO) of 5 L/min with a standard deviation of 1 L/min. The distribution pattern in the sample population is normal. Which of the following is the most appropriate conclusion?
- (A) Approximately 33% of the sample population would be expected to have a CO between 4 and 6 L/min
- (B) Approximately 95% of the sample population would be expected to have a CO between 3 and 7 L/min
- (C) Ten of the sample patients have a cardiac output greater than 5 L/min
- (D) The mean and the median are both at the 50th percentile
- (E) The median and the mode are the same in the sample population
A 35-year-old woman undergoes a one-hour abdominal liposuction procedure under general anesthesia. During the procedure, 2000 ml of crystalloid is administered and 800 ml of fatty tissue is extracted. Thirty minutes postoperatively, blood pressure is 75/40 mmHg and heart rate is 100 bpm; SpO2 is 94% on room air. Which of the following is the most likely cause of these findings?
- (A) Acute systemic vasodilation
- (B) Circulating free fatty acids
- (C) Hypocalcemia
- (D) Inadequate intravascular volume replacement
- (E) Venous fat embolism
The illustration depicts flow-volume loops for the same person at two different times in his life. Which of the following is indicated by the dotted loop?
- (A) Bronchial tumor
- (B) Chronic asthmatic bronchitis
- (C) Morbid obesity
- (D) Paralysis of a vocal cord
- (E) Subglottic stenosis
Which of the following statements concerning myasthenia gravis is true?
- (A) Neostigmine is inappropriate for antagonism of neuromuscular blockade
- (B) The number of acetylcholine receptors is decreased
- (C) Plasma cholinesterase concentration is decreased
- (D) The risk for malignant hyperthermia is increased
- (E) Succinylcholine is contraindicated
Block of each of the following nerves is required for inguinal herniorrhaphy EXCEPT the
- (A) genitofemoral
- (B) iliohypogastric
- (C) ilioinguinal
- (D) obturator
- (E) twelfth thoracic
Which of the following is greater in an obese patient than in a nonobese patient of equal height?
- (A) Milliliters of local anesthetic required for epidural block
- (B) Milligrams of succinylcholine required for intubation
- (C) Clearance of diazepam
- (D) Clearance of fentanyl
- (E) Oxygen consumption per body surface area
Which of the following correctly describes the anatomical location of the brachial plexus?
- (A) Adjacent to the subclavian vein as it passes between the scalene muscles
- (B) Between the middle and posterior scalene muscles
- (C) Posterior to the first rib
- (D) Posterior to the subclavian artery
- (E) Posterior to the vertebral artery
Prilocaine is NOT recommended for obstetric regional anesthesia because it
- (A) causes fetal methemoglobinemia
- (B) has a very short duration of action
- (C) is not metabolized by the newborn
- (D) is the most toxic of the amide local anesthetics
- (E) produces a longer motor block than sensory block
Which of the following is the most appropriate initial management of a patient with hypotension secondary to sepsis?
- (A) Calcium chloride
- (B) Corticosteroids
- (C) Crystalloid infusion
- (D) Dopamine
- (E) Fresh frozen plasma