PSM (SWTS) Errata



Ans 49: (c) Cu-T 380A

Q-53 Bonus
Ans 93 : Bonus

Ans-186: (d) Use of bed nets

Ans-187: (b) Phlebotomus species

BonusQ-53 Regarding principles of evidence based medicine (EBM) .All are true excepta.
EBM Depends on clinical model & decision analysis to base its recommendation
b. EBM Objectively evaluate the quality of clinical research by critical assessing technique
reported by researcher in publication
c. Complete follow up involving a heterogenous population of patients or medical disorders
d. Weakest argument is opinion of experts or medical boards
Ans-53: (c) Complete follow up involving a heterogenous population of patients or medical
disorders
Ref: Read the text below
Sol:
• Evidence-based medicine (EBM) is the integration of best research evidence with clinical
expertise and patient values. It aims to apply the best available evidence gained from the
scientific method to medical decision making and it seeks to assess the quality of evidence
of the risks and benefits of treatments.
• Evidence based medicine is the conscientious, explicit and judicious use of current best
evidence in making decisions about the care of individual patients. The practice of evidencebased
medicine means integrating individual clinical expertise with the best available
external clinical evidence from systematic research.
• Evidence-based medicine categorizes different types of clinical evidence and ranks them
according to the strength of their freedom from the various biases that beset medical
research.
• For example, the strongest evidence for therapeutic interventions is provided by systematic
review of randomized, double-blind, placebo-controlled trials involving a homogeneous
patient population and medical condition.
• In contrast, patient testimonials, case reports, and even expert opinion have little value as
proof because of the placebo effect, the biases inherent in observation and reporting of
cases, difficulties in ascertaining who is an expert, and more. EBM Objectively evaluate the
quality of clinical research by critical assessing technique reported by researcher in
publication

Bonus Q-93 Savlon contains:
a. Chlorhexidine and chlorxylenol
b. Cetavlon and chlorhexidine
c. Cetavlon and habitane
d. Hibitane and chlorxylenol
Ans 93 : (b) Cetavlon and chlorhexidine
Ref– Read the text below
Sol:
• Savlon is a brand of first aid and medical products manufactured in the UK by Novartis
Consumer Health.
• The name Savlon usually refers to Savlon antiseptic skin healing cream, a topical
antiseptic cream.
• The active ingredients in Savlon cream are Cetrimide and Chlorhexidine Gluconate.

Q-186 All the following are responsible for resurgence of malaria Except:
a. Drug resistance in parasite
b. Insecticide resistance in vectors
c. Antigenic mutation in parasite
d. Use of bed nets
Ans-186: (d) Use of bed nets
Ref: Read the text below
Sol:
Use of bed nets is a method to protect against mosquito bite. Use of mosquito net can help
prevent the resurgence of malaria
The following factors contributes to resurgence of malaria
i. Insecticide resistance
ii. Drug resistance
iii. Increasing instability of the population due to migration, urbanization and industrialization
iv. Antigenic variability
v. Several environmental factors

Q-187 Which insect amongst following has not developed resistance to DDT
a. Musca domestica
b. Phlebotomus species
c. Xenopsylla species
d. Anopheles species
Ans-187: (b) Phlebotomus species
Ref: Read the text below
Sol:
• Resistance to DDT has not been reported by sand flies (Phlebotomus species)

Ans 49: (c) Cu-T 380A

Q-53 Bonus

Ans 93 : Bonus

Ans-186: (d) Use of bed nets

Ans-187: (b) Phlebotomus species