Intro to Antimicrobial Therapy Flashcards
It is ideal to identify the infecting microorganism prior to starting antimicrobial therapy.
Correct!
True
False
True
Correct identification of a microorganism allows for targeted therapy with the correct antibiotic, reducing potential drug-resistance and more effective care. (Lehne, page 1029)
A patient has acquired an infection while in the hospital. The nurse identifies this type of infection as what?
Superinfection
Conjugated infection
Resistant infection
Healthcare-Associated Infections
Healthcare-Associated Infections
Antibiotics act against bacteria in all of the following ways except:
Direct phagocytosis.
Disruption of the cell wall.
Interference with RNA and DNA synthesis.
Inhibition of protein synthesis.
Direct phagocytosis.
What is the minimum bactericidal concentration (MBC)?
The lowest concentration of an antibiotic needed to suppress bacterial growth completely
The lowest concentration of an antibiotic needed to produce effects
The lowest concentration of an antibiotic needed to reduce the number of bacterial colonies by 99.9%
The lowest dose of an antibiotic needed to eradicate bacteria
The lowest concentration of an antibiotic needed to reduce the number of bacterial colonies by 99.9%
The development of a new infection as a result of the elimination of normal flora by an antibiotic is referred to as what?
Allergic reaction
Nosocomial infection
Superinfection
Resistant infection
Superinfection
Antibiotic therapy can destroy the normal flora of the body, which normally would inhibit the overgrowth of fungi and yeast. When the normal flora is decreased, these organisms can overgrow and cause a new infection, or superinfection.
An antimicrobial medication that has selective toxicity has which characteristic?
Ability to suppress bacterial resistance
Ability to transfer DNA coding
Ability to act against a specific microbe
Ability to avoid injuring host cells
Ability to avoid injuring host cells
Selective toxicity refers to an antibiotic that has the ability to injure only invading microbes, not the host
Bactericidal vs Bacteriostatic
Antibacterial drugs that directly kill bacteria are known as - bactericidal
Antibacterial agents that slow bacterial growth are referred to as - bacteriostatic drugs.
Which patient should receive prophylactic antibiotic therapy?
A patient with a high fever without an identifiable cause
A patient who is to have his teeth cleaned
A patient with a white blood cell count of 8000 cells/mm3
A patient who is scheduled for a hysterectomy
A patient who is scheduled for a hysterectomy
A patient is prescribed an antibiotic to treat a urinary tract infection. What statement by the patient indicates a need for further teaching?
“I should immediately report vaginal itching or discharge.”
“I can stop the medication as soon as the symptoms have disappeared.”
“I will drink more fluids to help clear up the infection.”
“I will stop the medication and contact the doctor if I develop a rash.”
“I can stop the medication as soon as the symptoms have disappeared.”
Which statement about superinfections does the nurse identify as true?
Superinfection is defined as a new infection that appears during the course of treatment for a primary infection.
Superinfections are caused by viruses.
Superinfections are more common in patients treated with narrow-spectrum drugs.
Superinfections are easy to treat.
Superinfection is defined as a new infection that appears during the course of treatment for a primary infection.
