The key answer without the explanation is listed below. The items from In-training exam book doesn't have any official answer. The new version of tryme (after June 2001) have explanations.

1. The muscular action most likely to remain intact following an axillary brachial plexus block is (In-training 1991-B)

A. Flexion at the elbow
B. Extension at the wrist
C. Flexion of digits 3,4, and 5
D. Extension of digits 1,2, and 3
E. extension at the elbow
 

2. Maternal Hyperventilation produces (In-training 1991-B)

A. decreased maternal arterial pH
B. Increased fetal cerebral blood flow
C. Increased fetal arterial pH
D. Decreased maternal uterine artery flow
E. Increased fetal arterial pO2
 

3. Following hypothermic cardiopulmonary bypass, adequacy of body rewarming is best indicated by normothermia recorded from the (In-training 1991-B )

A. upper esophagus
B. lower esophagus
C. pulmonary artery
D. rectum
E. great toe
 

4. A 70-year-old man who underwent bilateral carotid endarterectomies 2 years ago is to undergo anesthesia and surgery. The denervation of the carotid bodies is likely to result in (In-training 1991-B )

A. chronic respiratory alkalosis
B. decreased ventilatory response to hypoxemia
C. increased ventilatory response to hypercarbia
D. labile hypertension
E. resting bradycardia
 

5. Which of the following opioid is vagolytic (In-training 1991-B )

A. Morphine
B. Meperidine
C. Sufentanil
D. Nalbuphine
E. Alfentanil
 

6. A full E-cylinder of O2 can deliver 2 L/min of O2 at most (In-training 1991-B )

A. 30 minutes
B. 90 minutes
C. 3 hours
D. 5 hours
E. 12 hours
 

7. Which of the following statements concerning the cardiovascular effects of iv bupivacaine is true ? (In-training 1993-B )

A. Bretylium is effective in treating bupivacaine-induced vent. arrhythmias
B. Cardiovascular toxicity is decreased during pregnancy
C. Cardiovascular toxicity occurs at lower blood levelsthan CNS toxicity
D. Systemic vascular resistance is unchanged
E. The rate of impluse conduction through the heart is increased
 

8. Surgery cancelled 10 min after IVRA of 50 ml of lidocaine 0.5 %. To terminate anesthesia safely, what is the most appropriate ? (In-training 1993-B )

A. Immediately if benzodiazepines have been administered
B. immediately after IV 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
 

9. Normal pseudocholinesterase (In-training 1993-B )

A. is highly concentrated at the motor end-plate
B. hydrolyzes succinylcholine by Hoffman elimination
C. is produced primarily at nerve terminals
D. is antagonized by acetylcholinesterase inhibitors
E. resists dibucaine inhibition more than its atypical variant
 

10. During the uncomplicated mask induction with halothane and 50 % N2O in O2in a 6 month-old infant with a large VSD and valvular pulmonic stenosis, SpO2 decreases from 85% (room air) to 60%; heart rate is 100 bpm and BP is 62/40 mmHg. The most appropriate management is to ? (In-training 1993-B )

A. administer atropine
B. administer phenylephrine
C. administer propronolol
D. increase anesthetic depth
E. intubate the trachea
 

11. Recognized side effects of MgSO4 used for the treatment of preeclampsia that would be of anesthetic concern include each of the following EXCEPT (In-training 1993-B )

A. maternal pulmonary edema
B. neonatal hypotonia
C. increased maternal sensitivity to succinylcholine
D. increased maternal sensitivity to vecuronium
E. maternal hypokalemia
 

12. A 65-year-old man is disoriented and has a headache and nausea in the recovery room 30 minutes after TUR-P with glycine irrigation under spinal anesthesia. Heart rate is 50 bpm and blood pressure is 180/110 mmHg. Which of the following is the LEAST likely ? (In-training 1993-B )

A. Decreased serum osmolality
B. Serum sodium concentration 132 mEq/L
C. Increased serum ammonia concentration
D. Bibasilar rales
E. Jugular venous distention
 

13. During N2O anesthesia, which of the following expands most rapidly ? (In-training 1993-B )

A. Air bubble in the blood
B. Air in the intestines
C. Endotracheal tube cuff
D. Pneumothorax
E. Sulfahexafluoride bubble in the vitreal cavity
 


Key type for the following items
A : 1,2,3      B : 1,3      C : 2,4      D : only 4     E : all

14. Oxygen safe valve devices on anesthesia machines (In-training 1991-B )

1. are located upstream of the flow control valves
2. warn if the oxygen flowmeter is cracked
3. stop flow of other gases if oxygen supply fails
4. eliminate the need for an oxygen analyzer
 

15. A patient with a dibucaine number of 20 would have (In-training 1991-B )

1. increased risk of toxicity from intranasally administered cocaine
2. increased risk of toxicity from subarachnoid administration of tetracaine
3. prolonged paralysis after intravenous administration of succinylcholine
4. decreased duration of local anesthesia with chloroprocaine
 

16. Bilateral block of the superior laryngeal nerves results in (In-training 1991-B )

1. anesthesia of the base of the tongue
2. loss of sensatiion below the vocal cords
3. difficulty swallowing
4. inabilitiy to perform a Valsalva maneuver
 

17. Agents that produce an acute withdrawal response in patients addicted to heroin include (In-training 1993-B )

1. pentazocine
2. nalbuphine
3. buprenorphine
4. naloxone
 

18. True statements concerning carbon dioxide absorption in breathing-system canisters include : (In-training 1993-B )

1. The major reactant of baralyme is barium hydroxide
2. Baralyme contains silica to minimize dust
3. The major component of soda lime is sodium hydroxide
4. Both Baralyme and soda lime contain calcium hydroxide
 

Sorry, no key for ABA in-training exam.

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