Mallampati Classification : PGCEE MDS 2022

 # If base of uvula and soft palate are visualized on maximal mouth opening it is referred to as Mallampati  classification:

A. Class I

B. Class II

C. Class III

D. Class IV

The correct answer is C. Class III.

Visualization of the amount of posterior pharynx is important and correlates with the difficulty of intubation. Visualization of the pharynx can be obscured by the tongue, which also interferes with visualization of the larynx on laryngoscopy. 

The Mallampati classification is based on the structures visualized with maximal mouth opening and tongue protrusion in a sitting position.

Class I: Soft palate, fauces, uvula, and pillars are visualized

Class II: Soft palate, fauces, and a portion of uvula are visualized

Class III: Soft palate, the base of the uvula is visualized.

Class IV: Only the hard palate is visualized

PGCEE MDS 2022: Behavior modification is based on the principle of:

 # Behavior modification is based on the principle of:

A. Cognitive theory

B. Classical conditioning theory

C. Social learning theory

D. Operant conditioning theory

The correct answer is C. Social learning theory.

Behavior shaping is a form of behavior modification technique based on principles of social learning. It is the procedure that slowly develops desired behavior. The behavior-shaping techniques are:

• Desensitization (TSD)

• Modelling

• Contingency management

PGCEE MDS 2022: The largest component of gutta percha cones is:

 # The largest component of gutta percha cones is:

a) Gutta percha 

b) Zinc oxide

c) Resins and waxes 

d) Coloring agents

The correct answer is B. Zinc oxide.

Composition of gutta percha cones:

(Constituent - Percentage of constituent - Function)

Gutta percha - 20% - Matrix

Zinc oxide - 66% - Filler

Heavy metal sulfates (Bismuth sulphates) - 11% - Radio opacifier

Waxes or resins - 3% - Plasticizer

PGCEE MDS 2022: CSF rhinorrhea is due to:

 # CSF rhinorrhea is due to:

A. Nasal fracture

B. Guerin’s fracture

C. Dural tear

D. Condylar fracture

The correct answer is C. Dural tear.

CSF rhinorrhoea is the result of a dural tear associated with a fracture of the cribriform plate of the ethmoid in Lefort II and III fractures. Cerebrospinal Otorrhoea is due to a fracture of the petrous part of the temporal bone.

CSF mixed with blood produces a double ring (Tramline effect) if dropped on a hospital sheet or pillow.