Q-141. In patients of leprosy, lepromin test is used for
a) Treatment
b) Prognosis
c) Diagnosis
d) Epidemiological investigations
Answer: Prognosis
Explanation:
Use of Lepromin test:
In classifying the leprosy disease
To evaluate the immune status of leprosy patients
To estimate the prognosis of leprosy patients
Q-142. Kaplan Meier method is used for
a) Prevalence
b) Survival
c) Frequency
d) Incidence
Answer: Survival
Explanation:
The Kaplan–Meier estimator, also known as the product limit estimator is a non-parametric statistic used to estimate the survival function from lifetime data.
In medical research, it is often used to measure the fraction of patients living for a certain amount of time after treatment.
Q-143. Which of the following statements about vaccines is false?
a) Thiomersal is preservative in DPT vaccine
b) Magnesium chloride is stabilizer used in OPV
c) Kanamycin is preservative in measles
d) Neomycin is preservative in BCG vaccine
Answer: Neomycin is preservative in BCG vaccine
Explanation:
Certain antibiotics may be used in some vaccine production to help prevent bacterial contamination during manufacturing.
Antibiotics used during vaccine manufacture include neomycin, Polymyxin-B, streptomycin and gentamycin.
Important point:
Neomycin is used as preservative in measles, mumps, MMR, varicella and polio virus vaccines.
Q-144. What is true about isolation period of enteric fever?
a) Till three bacteriologically negative stools and urine reports
b) Up to three days after starting the treatment
c) Till the fever subsides
d) Till Widal becomes negative
Answer: Till three bacteriologically negative stools and urine reports
Explanation:
Isolation period of enteric fever:
Till three bacteriologically negative stools and urine reports on three separate days
Q-145. Which of the following statement is true about net protein utilization?
a) It is the ratio of energy form protein to total energy in diet.
b) It is the ratio of total nitrogen retained by total nitrogen intake multiplied by 100.
c) It is the amount of one amino acid per gram of a protein divided by the amount of same amino acid per gram of egg protein
d) If the NPU is high the amount of protein requirement in diet is high
Answer: It is the ratio of total nitrogen retained by total nitrogen intake multiplied by 100.
Explanation:
Net protein utilization (NPU):
The ratio of amino acid converted to proteins to the ratio of amino acids supplied multiplied by 100
Or
The ratio of total nitrogen retained by total nitrogen intake multiplied by 100
Important points:
A method of assessing the protein quality
NPU can range from 1 to 0 with value of 1 indicating 100 % utilization of dietary nitrogen as protein and a value of zero indicating none of the nitrogen supplied converted to protein