Medical Microbioogy: MCQ on Hospital Acquired Infection

1) MRSA (methicillin resistant Staphylococcus aureus) has emerged as a highly infectious pathogen, also given the name "super bug" that can be easily spread in hospitals and in the communities. Which of the following group of people are usually Not at the higher risk of getting MRSA infection?
a) 6 months to 2 years old babies
b) Students in school and daycare
c) Athletes
d) Military personnel
e) Immunocompromised patients in hospitals

2) A few hours old premature baby was admitted to the NICU with low birth weight and difficulty in breastfeeding. On the third day the baby developed fever and experienced discomfort while breathing, other symptoms included poor feeding and irritability. Other babies in the care unit were suspected of pneumonia, name the most commonly isolated gram negative bacteria in the hospital acquired pneumonia of neonates?
a) Streptococcus pneumonia
b) Klebsiella pneumonia 
c) Haemophilus influenzae
d) Listeria monocytogens

3) A 72 year old was admitted to the emergency care of the hospital, he suffered from head injury and concussion due to the fall in the bathroom of his home. After five days in urinary catheter, he showed the symptoms of urinary tract infection, with hyponatremia which resulted in secondary nausea, fatigue and confusion. Catheter associated urinary tract infection was suspected, the urine sample sent for the bacterial identification showed gram negative bacilli with greenish pigmentation. Name the possible pathogen
a) Staphylococcus aureus
b) Clostridium difficile
c) Pseudomonas aeruginosa 
d) Escherichia coli

4) Which of the following factor is Not the possible major risk factor for hospital acquired neonatal infection in NICU?
a) Medical instruments
b) Invasive procedures
c) Prolonged stay time in the care unit 
d) Breastfeeding soon after the delivery 

5) All of the following statement regarding bacteremia and septicemia occurred during hospitalization are true, Except?
a) The most common pathogens isolated are gram negative bacilli   
b) It may occur after most of the surgical procedures 
c) The infection is seen only in newborns 
d) Prolonged use of intravenous cannula can increase the infection

6)Which of the following might Not be the effective control measures in reducing the hospital acquired infection?
a)Testing of the sterilization technique
b) More use of antibiotics for the infection 
c) Proper attention to the routine hygiene practices
d) Routine sampling for bacteriology and sensitivity testing    

7)Which of the following pathogen is a frequently found multidrug resistant bacteria in hospitals?
a) Pseudomonas aeruginosa      
b) Mycobacterium tuberculosis
c) Proteus vulgaris
d) Bacillus anthracis

8) Select all of the important nosocomial infections
a) UTI 
b) Bloodstream 
c) Gut 
d) Site of surgery  
e) Lungs

9) A girl born with a underdeveloped lung had to stay hospital for prolonged period of time. She developed a serious infection during that time which occurred during the use of possibly contaminated central lines also called central line associated bloodstream infection. Which of the following pathogens is commonly associated with CLABSI?
a) Mycoplasma pneumonia
b) Coagulase negative Staphylococci 
c) Streptococcus pyogens
d) Clostridium perfringens

10) Name the least common pathogen for ventilator associated pneumonia 
a) Staphylococcus aureus
b) Klebsiella pneumoniae
c) Mycobacterium tuberculosis 
d) Acinetobacter baumanii

11) According to CDC which of the following PPE guidelines is less important preventive measures taken by the healthcare personnel in control of hospital acquired infections?
a) Good hand hygiene
b) Proper mask for respiratory protection
c) Sterile gown and gloves
d) Easy and secure eye wears
e) Talking politely to the patients

12) Which of the following age group people are most susceptible to the community acquired pneumonia?
a) Children 5 to 10 years old
b) All hospitalized patients
c) Adults above 60 year old
d) Children ages 1 to 10 years old 

13) The following pathogen is responsible for the commonly hospital acquired as well as community acquired diarrhea, it can survive and stay viable in most of the surface regions for prolonged period of time. The organism consists of the spores which makes it more difficult to kill sometimes even after a thorough cleaning. Name the most likely pathogen
a) Methicillin resistant Staphylococcus aureus
b) Penicillium chrysogenum
c) Clostridium difficile 
d) Bacillus anthracis

14) Which of the following group of people are at major risk for the surgical site infections?
a) Children under 18 months old
b) Transplant recipient patients
c) Colon surgery patient
d) All of the above 

15) Which of the following is Not the major pathogen isolated in hospital acquired Urinary tract infections?
a) Proteus vulgaris
b) Salmonella paratyphi
c) Pseudomonas aeruginosa
d) E. coli 

Answers:   
1-a) 6 months to 2 years old babies
2-b) Klebsiella pneumonia     
3-c) Pseudomonas aeruginosa  
4-d) Breastfeeding soon after the delivery 
5-c) The infection is seen only in newborns
6-b) Overuse of antibiotics for the infection
7-a) Pseudomonas aeruginosa 
8- Option a, b, c, d & e
9-b) Coagulase negative Staphylococci
10-c) Mycobacterium tuberculosis
11-e) None of the above 
12-c) Adults above 60 year old
13-c) Clostridium difficile
14-d) All of the above
15-b) Salmonella paratyphi
 




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