Monday, March 7, 2011

416 - AP PG 2011 (Andhra Pradesh) ENT questions with answers

1q: Which of the following is not a quadrant of tympanic membrane?
a. Posterosuperior
b. Anteroinferior
c. Posteroinferior
d. Posteroanterior

2q: Crypta magna is seen in
a. Palatine tonsil
b. Nasopharyngeal tonsil
c. Lingual tonsil

3q: Which of the following is true regarding acute epiglottitis?
a. Urgent laryngoscopy is done
b. The mostcommon causative organism is staphylococcus
c. Thumb print sign is seen on lateral x-ray

4q: Epley maneuvre is done for
b. acute labyrinthitis

5q: Which of the following is true regarding cochlear implants?
a. Placed in round window
b. Cochlear malformation is not a contraindication for its placement

6q: What is the wavelength of Co2 laser
a. 1060 nm
b. 10600 nm

7q: Foot plate of stapes (oval window) opens into
a. scala vestibuli
b. scala tympani

8q: Perichondritis of the pinna is caused by
a. streptococcus
b. staphylococcus
c. pseudomonas

9q: Normal conversation in a quiet room is ____ decibels
a. 20-30
b. 30-40
c. 40-50
d. 50-60

*180 decibels, equivalent to a rocket launching pad [hearing loss inevitable].
*140 decibels, equivalent to a gunshot blast, jet plane take-off at close range [approximately 200 feet], air raid siren [any length of exposure time is dangerous and is at the threshold of pain].
*130 decibels, equivalent to sound vibrations felt, as with thunder or near a four-engine jet at thirty meters.
*125 decibels, equivalent to a diesel engine room.
*120 decibels, equivalent to an amplified rock concert in front of speakers, sand-blasting, thunderclap [immediate danger], a nearby airplane engine, some rock or hard-metal cacophony groups, pneumatic hammer at one meter, thunderclap over head [at around 120 dB, the sensation of hearing is replaced by that of pain].
*110 decibels, equivalent to deafening factory noises and some musical boxes turned up too loudly, discotheque, thunder, rock-n-roll band.
*108 decibels, equivalent to the coqui frog croak of Puerto Rico [up to 108 dB].
*105 decibels, In a Malaysian surgical-glove factory, making surgical-latex gloves by dipping porcelain models of the human hand into liquid latex, which when dried, is blown off the hands by air jets. Before modifications to the air jets, the gloves were blown off every 30 seconds at a deafening 125 decibels.
*100 decibels, equivalent to a chain saw, pneumatic drill, printing plant, jackhammer, speeding express train, some car horns at five meters, farm tractor, riveting machine, some noisy subways [about 20 feet].
*90 decibels, equivalent to a police whistle, heavy traffic, truck traffic, noisy home appliances subway-rail train, pneumatic drill [or hammer] at one meter, walk-man ear phone [average volume], rock drill at 100 feet, some motorcycles at 25 feet, shouted conversation.
*80 decibels, equivalent to heavy city traffic [25-50 feet], alarm clock at two feet, factory noise, vacuum cleaner, heavy truck, loud-radio music, garbage disposal.
*70 decibels, equivalent to typewriter, average factory noise, busy traffic [at one meter], office tabulator, noisy restaurant [constant exposure], quiet vacuum cleaner, TV.
*60 decibels, equivalent to an air conditioner at twenty feet, conversation [at one meter], sewing machine, large transformer, ordinary or average street traffic.
*50 decibels, equivalent to quiet radio, average home, light traffic at a distance of 100 feet, refrigerator, gentle breeze, average office, non-electric typewriter, ordinary spoken voice.
*40 decibels, equivalent to quiet office, living room, bedroom away from traffic, residential area [no traffic]; many computer hard drives range an average of 40-50 dB, soft whisper [five feet].
*30 decibels, equivalent to quiet conversation, soft whisper, quiet suburb, speech in a broadcasting studio.
*20 decibels, equivalent to whispering, ticking of a watch [by the ear], rural area [without loud farm machinery or other excessive noises].
*10 decibels, equivalent to the rustling of leaves.
*0-1 decibels, equivalent to the faintest sounds that can be heard, the threshold of audibility.

10q: Anaesthesia used in Dacryocystorhinostomy?
a. Frontal nerve block
b. Nasociliary nerve block
c. Infraorbital nerve block

11q: Which cells of the cochlea generate action potentials
a. Outer hair cells
b. Inner hair cells

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