• Infectious Diseases oxf.

1. Common Presentations.

1. Pruritus.

***) All of the following are cause of pruritus, except:

1. Dermatitis herpetiformis

2. Pheochromocytoma

3. Uremia

4. Prurigo nodularis

5. Pregnancy

Answer: B* Pheochromocytoma

***) All of the following are cause of pruritus, except:

1. Multiple sclerosis

2. Diabetes mellitus

3. Acromegaly

4. Chronic renal failure

5. Obstructive jaundice

Answer: C* Acromegaly

***) All of the following are cause of pruritus, except:

1. Scabies

2. Hodgkin's disease

3. Hepatitis C

4. Polycythemia rubra vera

5. Rheumatoid arthritis

Answer: E* Rheumatoid arthritis

2. Rigors.

***) Rigors are typical features of all of the following, except:

1. Brucellosis

2. Primary pulmonary tuberculosis

3. Malaria

4. Acute pyelonephritis

5. Acute cholangitis

Answer: B* Primary pulmonary tuberculosis

***) Rigors are feature of all of the following, except:

1. Ascending cholangitis

2. Falciparum malaria

3. Brucellosis

4. Typhoid fever

5. Rubella

Answer: E* Rubella

2. DRUGS.

1. Common Drugs.

***) One of the following is bacteriostatic antibiotic: Q2012

1. Penicillin

2. Aminoglycosides

3. Erythromycin

4. Imipenem

5. Aztreonam

Answer: C* Erythromycin

***) Which of the following antibiotics is the best treatment for pseudomembranous colitis:

1. Ampicillin

2. Flucloxacillin

3. Gentamycin

4. Vancomycin

5. Cefuroxime

Answer: D* Vancomycin

***) One of the following is active against pseudomonas infection:

1. Penicillin G

2. Streptomycin

3. Tetracycline

4. Cefepime

5. Cephalothin

Answer: D* Cefepime

***) Infections with Giardia lamblia are best treated with:

1. Tetracycline

2. Salazopyrin

3. Gentamycin

4. Amphotericin B

5. Metronidazole

Answer: E* Metronidazole

***) The drug of choice for a child with pneumococcal pneumonia is:

1. Penicillin

2. Streptomycin

3. Chloramphenicol

4. Sulfa drugs

5. Erythromycin

Answer: A* Penicillin

***) Each of the following penicillins is penicillinase resistant, except:

1. Ampicillin

2. Oxacillin

3. Nafcillin

4. Dicloxacillin

5. Cloxacillin

Answer: A* Ampicillin

***) The following antimicrobial drugs are effective against staphylococci, except:

1. Teicoplanin

2. Metronidazole

3. Imipenem

4. Cephalexin

5. Cloxacillin

Answer: B* Metronidazole

***) All of the following are antiviral drugs, except:

1. Acyclovir

2. Vidarabine

3. Amphotericin B

4. Ganciclovir

5. Interferon

Answer: C* Amphotericin B

***) All of the following are antiviral drugs, except:

1. Acyclovir

2. Zidovudine

3. Vidarabine

4. Interferon

5. Griseofulvin

Answer: E* Griseofulvin

3. Specific Infections.

1. Gastroenteritis.

***) One of the following is the most common cause of diarrhea: Q2012

1. Bacterial

2. Fungal

3. Viral

4. Parasitic

5. None of above

Answer: A* Bacterial

***) The following is correct about food poisoning, except:

1. Salmonella food poisoning is common

2. Incubation period of salmonella food poisoning is 12-48 hours

3. Incubation period of staphylococcal food poisoning is 1-8 hours

4. Amanita poisoning is a type of mushroom poisoning

5. Clostridium tetani can cause food poisoning

Answer: E* Clostridium tetani can cause food poisoning

***) All of the following can cause food poisoning by causing gastrointestinal tract infection, except:

1. Salmonella

2. Streptococcus

3. Staphylococcus

4. Vibrio parahaemolyticus

5. Fungus

Answer: B* Streptococcus

***) Which of the following organism is not a cause of invasive diarrhea:

1. Salmonella

2. Giardia

3. Campylobacter

4. Shigella

5. Amebiasis

Answer: B* Giardia

***) All of the following can cause food poisoning by producing toxin, except:

1. Staphylococcus

2. Clostridium perfringens

3. Clostridium botulinum

4. Salmonella

5. Bacillus cereus

Answer: D* Salmonella

***) The incubation period of a food poisoning by chemical poisons is usually:

1. Less than 1 hour

2. 8 hours

3. 12 hours

4. 18 hours

5. More than 18 hours

Answer: A* Less than 1 hour

***) Which one of the following is usually not a feature of staphylococcal food poisoning:

1. Abdominal cramps

2. Fever

3. Hypotension

4. Vomiting

5. Diarrhea

Answer: B* Fever

***) The characteristic incubation period for staphylococcus aureus food poisoning is:

1. 1 to 6 hrs

2. 8 to 24 hrs

3. 1 to 4 days

4. 6 to 15 days

5. 15 to 21 days

Answer: A* 1 to 6 hrs

***) Regarding staphylococcal food poisoning all of the following statements are true, except:

1. Contaminated meats and confectionery constitute the most outbreak

2. Vomiting and severe abdominal cramps are prominent symptoms

3. The acute symptoms usually subside within 12 hours

4. Central nervous system manifestations are usually present

5. Majority of patients require no specific treatment

Answer: D* Central nervous system manifestations are usually present

***) Staphylococcal food poisoning is characterized by all of the following, except:

1. Short incubation period

2. It is a common source-type of epidemic

3. Fever is a common symptom of the disease

4. Symptoms are usually of short duration

5. The diseases is usually brief and only requires rest and sedation

Answer: C* Fever is a common symptom of the disease

***) Salmonella can reach the food from one of the following:

1. Animal excreta at time of slaughter

2. From human excreta

3. Raw to cooked food by hand, surfaces and utensils in kitchen

4. Water polluted by sewage

5. All of above

Answer: E* All of above

***) The incubation period of a food born salmonella outbreak is:

1. 30-60 minutes

2. 4 hours

3. 1 day

4. 4 days

5. 30 days

Answer: C* 1 day

***) A child complaining of bloody diarrhea, vomiting and abdominal pain 20 hours after eating a chicken mostly likely has:

1. Staphylococcal food poisoning

2. Botulism

3. Appendicitis

4. Salmonella food poisoning

5. Meckel's diverticulitis

Answer: D* Salmonella food poisoning

***) Which of the following organisms are used for routine testing of water:

1. Typhoid

2. Salmonella

3. Coliform

4. Streptococci

5. Staphylococci

Answer: C* Coliform