439 - AIIMS NOVEMBER 2011 Mcqs with answers - part 11

51.A 3 year old has eczematous dermatitis on extensor surfaces. His mother has a history of Bronchial asthma. Diagnosis should be
a.Atopic dermatitis
b.Contact dermatitis
c.Seborrhic dermatitis
d.Infantile eczematous dermatitis

answer a.Atopic dermatitis.

52.Which of the following is not true about Xenon anaesthesia
a.Non explosive
b.Minimal cardiovascular side effects
c.Slow induction and slow recovery
d.Low blood gas solubility

answer c.Slow induction and slow recovery.

53.Which of the following in anaesthesia will produce decreased EEG activities
a.Hypothermia
b.Early hypoxia
c.Ketamine
d.N2O

answer a.Hypothermia.

54.Ultrasound criteria for congenital hypertrophic pyloric stenosis are all except
a.Food remnants in stomach
b.Pyloric canal length greater than 16mm
c.Thickness of the lesion greater than 4mm
d.??????

answer see explanation below
Explanation:

Ultrasonographic signs of hypertrophic pyloric stenosis, originally described in 1977 and further defined, are as follows:
1.A MucosalThickness (serosa to mucosa) greater than 3 mm (a correlation between MT and the patient's age exists; the most reliable ultrasonographic sign is an MT greater than 3 mm. Because this measurement can be increased falsely with off-axis imaging, attention to technique is important.)
2.Target sign on transverse images of the pylorus.
3.Pyloric channel length greater than 17 mm
4.Pyloric thickness (serosa to serosa) of 15 mm or greater
5.Failure of the channel to open during a minimum of 15 minutes of scanning
6.Retrograde or hyperperistaltic contractions
7.Antral nipple sign (ie, a prolapse of redundant mucosa into the antrum, which creates a pseudomass. 8.Double-track sign on ultrasonography(ie, redundant mucosa in the narrowed lumen, which creates 2 mucosal outlines).
9.Other findings include reversible portal venous gas; nonuniform echogenicity of the pyloric muscle.

55.In herpes zoster all are seen commonly except?
a. Pseudo dendritic
b. Anterior stromal
c. Endothelial
d. Sclerokeratitis

answer b.Anterior stromal.