AIIMS MCQ for Medical PG Preparations .. NIME | Direct coombs test MCQ

Cord red blood cells from an infant suspected of having hemolytic disease of the newborn is most likely to be tested by which of the following?
A. Passive hemagglutination test
B. Hemagglutination inhibition test
C. Nephelometry
D. Direct coombs test

Ans. D.

The direct version of the Coombs test would be performed to determine if the infant has maternal IgG (anti-Rh) already bound to the erythrocytes in the cord Blood. IgG antibodies are relatively small. When they coat large particles or cells, such as erythrocytes, they do not readily agglutinate them. In the direct Coombs test, anti-immunoglobulin (antibody against the Fc region of human IgG) is directly added to the infant's erythrocytes. The anti-immunoglobulin (also known as Coombs reagent) spans the distance between cells to form an agglutinating lattice that can be visualized in the test tube.

 

AIIMS MCQ for Medical PG Preparations .. NIME | complication of pancreatitis MCQ

All of the following are known complication
of pancreatitis except?
A. Pancreatic abscess
B. Colonic necrosis
C. Pancreatic malignancy
D. Pancreatic fistula

Ans. C.

Pancreatic malignancy is not a complication of acute pancreatitis. The other complications of acute pancreatitis are pancreatic pseudocyst, intraperitonealhaemorrhage, pleural effusion, atelectasis, pneumonia, ARDS, DIC, peptic ulcer disease, erosive gastritis, portal vein thrombosis, oliguria, azotaemia, acute tubular necrosis, hyperglycaemia, hypocalcaemia, fat emboli, Purtscher's retinopathy, hypertriglyceridaemia etc.

AIIMS MCQ for Medical PG Preparations .. NIME | Magical thinking MCQ

A 5-year-old boy told his mother that he had an accident with his bicycle because he was thinking of taking some money from his mother. This type of reasoning is known as
A. Adaptive reasoning
B. Magical thinking
C. Concrete operation
D. Abstract reasoning

Ans. B.

The type of reasoning used by this 5-year-old boy, who believed that something bad he was thinking caused a bad event to occur (i.e., the bicycle accident), is called magical thinking. This type of reasoning is typical of children in Piaget's preoperational stage (age 2-7 years).