Elsevier-Anesthesia Exam Questions With Correct Verified Answers | 100% Pass (A+ Certified)

ELSEVIER-ANESTHESIA EXAM QUESTIONS WITH CORRECT VERIFIED ANSWERS | 100% PASS (A+ CERTIFIED)ALL INDIA 2008 1. Train of four fade is characteristic feature of: A. Non depolarizing block B. Depolarizing block C. Malignant hyperthermia D. Both depolarizing and non-depolarizing block Answer A. Non depolarizing block 2. Not True regarding sevoflurane: a. MAC is higher than isoflurane b. Blood gas coefficient is higher than desflurane c. Potency more than isoflurane d. Sevoflurane is less cardio depressant than isoflurane Answer c. Potency more than isoflurane Minimum alveolar concentration (MAC): This is a measure of potency. It is defined as "at steady-state, the minimum alveolar concentration of the volatile anaesthetic that prevents reaction to standard surgical stimuli (skin incision) in 50 per cent of subjects at sea level (1 atm). According to MAC value: Desflurane Sevoflurane Enflurane Isoflurane Halothane That is Halothane is the most potent. and Desflurane is the least potent. According to the B/G coefficient Desflurane Sevoflurane Isoflurane Enflurane Halothane. 3. Which of the following statements about propofol is not true: A. Commercial preparations contains egg B. It is suitable agent for day care surgery C. It is contraindicated in porphyria D. It does not trigger malignant hyperthermia Answer C. It is contraindicated in porphyria AIIMS MAY 2008 4. Order of sensitivity of nerve fibres to local anaesthetic in decreasing order - A. Preganglionic sympathetic (B), pain (C and A-delta), sensory, motor B. Pain (C and A-delta), Preganglionic sympathetic (B), motor C. Preganglionic sympathetic (B), sensory, motor, pain (C and A-delta) D. Pain (C and A-delta), sensory, motor Answer A. Preganglionic sympathetic (B), pain (C and A-delta), sensory, motor. ∙∙ In functional terms, it is autonomic (mediated by C and B fibers) → Sensory ( mediated by C and A-delta fibers) → Motor ( A-alpha fibers). This is the old concept: NEWER CONCEPT: ∙ Sensitivity to Local Anaesthetic : A gamma & A delta A alpha & A beta B C Miller's Anaesthesia. "Different fiber types are differentially sensitive to local anesthetic blockade. In vivo experiments in which continuous superperfusion of peripheral nerve allows equilibration with drug and experiments in which a drug bolus is delivered by percutaneous injection, analogous to clinical peripheral nerve block, show unequivocally that small myelinated axons (Aγ motor and Aδ sensory fibers) are the most susceptible to impulse annihilation. Next in order of block are the large myelinated (Aα and Aβ) fibers, and the least susceptible are the small, nonmyelinated C fibers. In fact, in this last group, impulses in the slowest conducting population (conduction velocity of 0.5 to 0.8 msec) are the most resistant to local anesthetic. 5. All are safety features in anaesthesia machine except: a. Each gas is housed in an independent color coded, pin specific module b. Medium priority alarm shall be activated within 5 sec when the oxygen pressure decreases below a manufacturer- specific threshold pressure. c. Agent specific filling devices help to prevent filling vaporizer with the wrong agent d. The oxygen flowmeter's output changes accordingly when the supply pressure exceeds above the threshold valve. e. The oxygen flowmeter's output changes accordingly above the threshold valve. Answer d. The oxygen flowmeter's output changes accordingly when the supply pressure exceeds above the threshold valve. ALL INDIA 2007 6. Which one of the following is not an amide linked local anaesthetic: A. Procaine B. Lignocaine C. Dibucaine D. Bupivacaine Answer A. Procaine