Infections among hospitalized patients are often related to the presence of a medical device in the patient. Which conditions favor the formation of biofilms on in-dwelling catheters?
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Infections among hospitalized patients are often related to the presence of a medical device in the patient. Which conditions favor the formation of biofilms on in-dwelling catheters?
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- List the four cellular agents of bacterium that most antimicrobial agents such as antibiotics target. Explain how each area is affected by the agent.Diseases that involve biofilm-producing bacteria are of serious concern. They are not as easily treated compared with those involving free-floating (or planktonic) bacteria. Explain three reasons why biofilms can be more pathogenic.Once these pathogens enter the host the difference in environmental conditions signals for them to germinate and turn into growing cells. Compare Inhalation anthrax (Bacillus anthracis) to Tetanus (Clostridium tetani). Besides endospores used in transmission, what is a simple explanation to help explain how each microbe survives and grows in each location?
- Name two methods of control of growth for Mycobacterium tuberculosis pathogen in a patient with the disease and when confronted with the pathogen outside of the host. Be careful to specify if it is a physical method or a chemical method (check lecture to differentiate these two). Control of growth means how would you deal with an infection related to a person as well as how would you minimize the presence of the bacteria on a surface or object.About becterial enzymes, it is CORRECT to affirm that: a). Some becterial enzymes can help the microbe fight the immune system, by destroying lgA.b). Coagulases are enzymes that use the host's fibrinogen and form a semi-solid get that isolates amd protects the bacteria.c). Some bacterial enzymes such as hyaluronidase can help the microble move through the host's tissus by destroying the tissue's components.d). Fibrolysin is an enzymes that can help from blood clots.Name two methods of control of growth for Mycobacterium tuberculosis pathogen in a patient with the disease and when confronted with the pathogen outside of the host. Be careful to specify if it is a physical method or a chemical method .Control of growth means how would you deal with an infection related to a person as well as how would you minimize the presence of the bacteria on a surface or object.
- Describe the complications of biofilm formation and why it's often hard to treat once it's formed inside the body?Diseases that involve biofilm-producing bacteria are serious concern. They are not easily treated compared with those involving free-floating bacteria. Explain three reasons why biofilm formers are more pathogenic.Direct contact with pathogenic microorganisms is the most common cause of hospital-acquired infection. How might a dermal (skin) Staphylococcus infection of a staff member result in a urinary traction infection of a patient? Describe possible pathways of contamination during a normal workday.
- When virulent bacteria invade an organism, they usually inflict damage to it. Can you assess the different means a bacterium may use to affect the integrity of the host in detail?Which of the following is true of commensal bacterium? Question 2 options: A) commensal bacteria do not receive any benefit from its host B) commensal bacteria only colonize adult hosts C) commensal bacterium may also be an opportunistic pathogen D) commensal bacterium cannot cause an infection its hostWhich microbe requires serum components to be added to the growth medium?