10 Random Questions
Which of the following decreases dead space in an anesthetic circle system?
- (A) Larger surface area of the expiratory unidirectional valve
- (B) Placing a septum in the Y-piece
- (C) Shorter expiratory limb tubing
- (D) Smaller carbon dioxide absorber
- (E) Smaller reservoir bag
Which of the following statements concerning absorption of irrigation fluid during transurethral resection of the prostate is true?
- (A) Hydrostatic pressure has minimal effect on the amount of fluid absorbed
- (B) Typically 10 to 30 ml of fluid per minute are absorbed
- (C) Use of iso-osmotic solutions decreases the risk of hyponatremia
- (D) CNS complications are independent of the type of fluid used
- (E) Spinal anesthesia to T6 will mask the symptoms of overhydration
A 35-year-old patient, who is ASA physical status 1, is scheduled for open cholecystectomy under general anesthesia. Which of the following end-tidal concentrations would most likely block the adrenergic response to skin incision?
- (A) Enflurane 1.7%, oxygen
- (B) Isoflurane 1.2%, oxygen
- (C) Enflurane 0.6%, nitrous oxide 70%, oxygen
- (D) Halothane 0.4%, nitrous oxide 70%, oxygen
- (E) Isoflurane 1.0%, nitrous oxide 70%, oxygen
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
Systemic hypothermia to 30°C is accompanied by
- (A) a shift to the right of the oxyhemoglobin dissociation curve
- (B) a decrease in carbon dioxide dissolved in plasma
- (C) a decrease in the glomerular filtration rate
- (D) an increase in MAC of volatile inhalation agents
- (E) low-voltage, high-frequency EEG pattern
A patient with lumbar disk disease requires lumbar epidural injection of a corticosteroid for control of low back pain. Which of the following statements concerning this treatment is true?
- (A) Maximum effect occurs one hour after injection
- (B) Maximum effect occurs when drug concentration peaks in cerebrospinal fluid
- (C) Maximum effect occurs during the acute phase of the disease
- (D) The beneficial effect results primarily from sympathetic neurolysis
- (E) It is contraindicated if the patient has had prior surgical procedures on the lumbar disks
A patient has tonic movements of the head and neck, nystagmus, and slurred speech after receiving metoclopramide for nausea after nitrous oxide-opioid anesthesia. The most appropriate pharmacologic treatment is
- (A) diphenhydramine
- (B) midazolam
- (C) naloxone
- (D) phenytoin
- (E) physostigmine
In an Infant, spinal anesthesia to a sensory level of T8 is achieved with tetracaine administered at the L2-3 interspace. Compared with spinal anesthesia to the same sensory level in an adult, this anesthetic is associated with a
- (A) higher risk for neurotoxicity
- (B) higher risk for systemic toxicity
- (C) lower risk for spinal cord injury
- (D) more significant decrease in blood pressure
- (E) shorter duration of action
Which of the following statements concerning the pharmacokinetics of local anesthetics is true?
- (A) Decreased molecular weight is associated with decreased incidence of allergic reactions
- (B) Decreased protein binding is associated with decreased systemic toxicity
- (C) Increased ionization is associated with increased placental transfer
- (D) Increased lipid solubility is associated with faster onset
- (E) Presence of an ester linkage is associated with increased duration of action
A 34-year-old man has hyperkalemia-induced asystole. After initiating cardiopulmonary resuscitation, which of the following is the most appropriate next step in management?
- (A) Administration of atropine
- (B) Administration of calcium chloride
- (C) Administration of sodium bicarbonate
- (D) Transcutaneous pacing
- (E) DC countershock at 200 joules