Superinfections are more common with: A. Use of narrow spectrum antibiotics B. Short courses of antibiotics C. Use of antibiotics that are completely absorbed from the small intestines D. Use of antibiotic combinations covering both gram positive and gram negative bacteria

Superinfections are more common with:
A. Use of narrow spectrum antibiotics
B. Short courses of antibiotics
C. Use of antibiotics that are completely absorbed from the small intestines
D. Use of antibiotic combinations covering both
gram positive and gram negative bacteria
by

1 Answer

Answer :

D. Use of antibiotic combinations covering both
gram positive and gram negative bacteria
by

Related questions

Superinfections are more common with (a) Use of narrow spectrum antibiotics (b) Short courses of antibiotics (c) Use of antibiotics that are completely absorbed from the small intestines (d) Use of antibiotic combinations covering both gram positive and gram negative bacteria

Description : Superinfections are more common with (a) Use of narrow spectrum antibiotics (b) Short courses of antibiotics (c) Use of antibiotics that are completely absorbed from the small intestines (d) Use of antibiotic combinations covering both gram positive and gram negative bacteria

Last Answer : Ans: D

The following strategy will promote rather than curb emergence of antibiotic resistant micro-organisms: A. Whenever possible use broad spectrum antibiotics B. Prefer a narrow spectrum antibiotic to a broad spectrum one if both are equally effective C. Prefer short and intensive courses of antibiotics D. Use antibiotic combinations for prolonged therapy

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Last Answer : A. Whenever possible use broad spectrum antibiotics

Aminoglycoside antibiotics have the following property common to all members: A. They are primarily active against aerobic gram negative bacilli B. They are more active in acidic medium C. They readily enter cells and are distributed in total body water D. They are nearly completely metabolized in liver

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Last Answer : A. They are primarily active against aerobic gram negative bacilli

A diabetic develops a severe perineal infection with skin necrosis, subcutaneous crepitance, and drainage of a thin, watery, grayish and foul-smelling fluid. Management should consist of: a. Gram stain of the fluid, which will likely demonstrate multiple bacteria including predominantly gram-positive rods b. A CT scan is indicated in a stable patient to define the extent of the disease c. Broad spectrum antibiotics followed with prompt extensive debridement is indicated d. A safe guideline is to resect infected necrotic tissue so that a several centimeter margin of grossly normal, healthy tissue can be achieved e. A colostomy is of little benefit in this situation

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The following is true of vancomycin except: A. It is a bactericidal antibiotic active primarily against gram positive bacteria B. It acts by inhibiting bacterial protein synthesis C. It is an alternative to penicillin for enterococcal endocarditis D. It can cause deafness as a dose related toxicity

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Last Answer : B. It acts by inhibiting bacterial protein synthesis

What is the most important reason for restricted clinical use of chloramphenicol ? (a) Its narrow spectrum of activity (b) Emergence of chloramphenicol resistance (c) Its potential to cause bone marrow depression (d) Its potential to cause superinfections

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If a necrotizing soft tissue infection is considered, therapy mandates: a. Empiric administration of antibiotics active against gram-positive, gram-negative, and anaerobic bacteria b. Due to usually resistant species, penicillin is not indicated c. Immediate operative intervention and aggressive resection of all involved tissues is mandatory d. The use of hyperbaric oxygen has been demonstrated to be clearly advantageous

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Widespread and prolonged use of an antibiotic leads to emergence of drug resistant strains because antibiotics: A. Induce mutation in the bacteria B. Promote conjugation among bacteria C. Allow resistant strains to propagate preferentially D. All of the above

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Nalidixic acid is primarily active against: A. Cocci B. Bacilli C. Gram positive bacteria D. Gram negative bacteria

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The most important reason for highly restricted use of penicillin G injections in present day therapeutics is its: A. Narrow spectrum of activity B. Potential to cause hypersensitivity reaction C. Short duration of action D. Neurotoxicity

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Common cold is not cured by antibiotics because it is (a) caused by a virus (b) caused by a Gram-positive bacterium (c) caused by a Gram-negative bacterium (d) not an infectious disease.

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Choose the semisynthetic penicillin which has an extended spectrum of activity against many gram negative bacilli, is acid resistant but not penicillinase resistant: A. Cloxacillin B. Amoxicillin C. Phenoxymethyl penicillin D. Piperacillin

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Gram negative organisms are largely insensitive to benzyl penicillin because: A. They produce large quantities of penicillinase B. They do not utilise D-alanine whose incorporation in the cell wall is inhibited by benzylpenicillin C. Benzyl penicillin is not able to penetrate deeper into the lipoprotein-peptidoglycan multilayer cell wall of gram negative bacteria D. Both ‘A’ and ‘B’ are correct

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The following is true for gentamicin: A. It is more active in acidic medium B. It has a wide margin of safety C. It is excreted unchanged, mainly by glomerular filtration D. It primarily inhibits gram positive bacteria

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Which one of the following pairs is incorrectly matched as to antibiotic and use? a. Penicillin-gram-positive bacteria b. Nystatin-fungi c. Tetracycline-viruses d. Griseofulvin-fungi

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How do gram-positive and negative stains react differently to antibiotics?

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What is true of cefpirome: A. It is a fourth generation cephalosporin B. It easily penetrates porin channels of gram negative bacteria C. It inhibits type I β-lactamase producing enterobacteriaceae D. All of the above

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The following fluoroquinolones have augmented activity against gram positive bacteria except: A. Lomefloxacin B. Levofloxacin C. Gatifloxacin D. Moxifloxacin

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The distinctive feature(s) of sparfloxacin compared to ciprofloxacin is/are: A. Enhanced activity against gram positive bacteria B. Lack of pharmacokinetic interaction with theophylline and warfarin C. Higher incidence of phototoxic reaction D. All of the above

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Which fluoroquinolone has enhanced activity against gram positive bacteria and anaerobes: A. Pefloxacin B. Ciprofloxacin C. Sparfloxacin D. Norfloxacin

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Oral neomycin is beneficial in hepatic coma because: A. In hepatic failure patients it is absorbed from the intestines B. It decreases ammonia production by gut bacteria C. It reacts chemically with ammonia in the gut to prevent its diffusion into blood D. It induces ammonia detoxifying enzymes in the liver

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The use of prophylactic antibiotics has become commonplace. Which of the following statement(s) is/are true concerning the prophylactic use of antibiotics? a. The appropriate use of prophylactic antibiotics must include the initiation of the agent prior to the surgical procedure b. Continuing the antibiotic into the postoperative period has led to improved results in antibiotic prophylaxis c. The prophylactic administration of broad-spectrum agents (third-generation cephalosporins) has been shown to be particularly advantageous d. The topical use of antimicrobial agents is of no advantage in the prophylactic setting

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Distinguish between a narrow spectrum and broad spectrum antibiotic.

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What is the most important reason for the restricted use of systemic chloramphenicol: A. Emergence of chloramphenicol resistance B. Its potential to cause bone marrow depression C. Its potential to cause superinfections D. Its potential to inhibit the metabolism of many drugs

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The following organisms are frequently responsible for superinfections except: A. Pseudomonas aeruginosa B. Salmonella typhi C. Clostridium difficile D. Candida albicans

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Which of the following is a second generation cephalosporin that is highly resistant to gram negative β-lactamases, and cures penicillinase positive as well as negative gonococcal infection by a single intramuscular dose: A. Cephalexin B. Cefuroxime C. Cefoperazone D. Ceftazidime

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The limitations of quinidine in the treatment of cardiac arrhythmias include the following except: A. It has narrow spectrum antiarrhythmic activity B. It is not tolerated by many patients C. It can precipitate myocardial decompensation D. It can cause marked hypotension

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Choose the correct statement about tetracyclines: A. Being broad spectrum antibioics they are dependable for empirical treatment of lifethreatening infections B. Currently, they are not the first choice antibiotic for any specific infection C. They reduce stool volume and duration of diarrhoea in cholera D. The are preferred for treatment of anaerobic bacterial infections

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The following drug reduces the effect of oral anticoagulants: A. Broad spectrum antibiotic B. Cimetidine C. Aspirin D. Oral contraceptive

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Indicate the attribute that is common to both polymyxin B and bacitracin: A. Both are active against gram negative bacteria B. Both are too toxic for systemic use C. Both act by inhibiting bacterial cell wall synthesis D. Both a

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In gram positive and gram negative bacteria the electron transport contains a. Naphthquinone b. Plastoquinone c. Ubiquinone d. Both a and b

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Last Answer : A.gram-positive bacteria are thicker than gram-negative bacteria

Porins are located in A- the outer membrane of gram-negative bacteria B- he peptidoglycan layer of gram-positive bacteria C- the cytoplasmic membrane of both gram-negative and gram-positive bacteria D- the periplasmic space of gram-negative bacteria

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The cell wall of A- gram-positive bacteria are thicker than gram-negative bacteria B- gram-negative bacteria are thicker than gram-positive bacteria C- both have same thickness but composition is different D- none of these

Description : The cell wall of A- gram-positive bacteria are thicker than gram-negative bacteria B- gram-negative bacteria are thicker than gram-positive bacteria C- both have same thickness but composition is different D- none of these

Last Answer : gram-positive bacteria are thicker than gram-negative bacteria

Which of the following may contain fimbriae? A- Gram-positive bacteria B- .Gram-negative bacteria C- Both (a) and (b) D- None of these

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Last Answer : C. A and b

Aminoglycoside antibiotics exert the following action(s) on sensitive bacteria: A. Induce synthesis of defective proteins B. Make bacterial cell membrane more leaky C. Augment their own carrier mediated entry into the bacteria D. All of the above

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Last Answer : D. All of the above

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Description : How do antibiotic resistant bacteria resist antibiotics?

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Last Answer : Ans: C

Prophylaxis antibiotic for anthrax is given to people with symptoms who have been in a defined “hot zone” for a period of a) 60 days. Those with symptoms who have been in the hot zone should be given 60 days of prophylactic antibiotic. The aim of prophylaxis is to assure that if spores were inhaled, bacteria will be killed immediately upon release from spores. Those who have symptoms of fever, cough, headache, chills, and especially evidence of mediastinal lymph node involvement should be treated with intravenous antibiotics and respiratory support, if needed.

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Difference in Gram positive and Gram negative bacteria is due to (a) cell wall (b) cell membrane (c) ribosome (d) cytoplasm.

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Difference in Gram positive and Gram negative bacteria is due to (a) cell wall (b) cell membrane (c) ribosome (d) cytoplasm.

Description : Difference in Gram positive and Gram negative bacteria is due to (a) cell wall (b) cell membrane (c) ribosome (d) cytoplasm.

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