Antimicrobial Therapy Practice Test

These questions are part of the practice quiz. Start practicing

• Which antibiotic binds to the 50S ribosomal subunit and is bacteriostatic with broad spectrum, including Rickettsia, Haemophilus influenzae, Neisseria meningitidis, and Bacteroides?
• Beta-lactamase testing helps determine resistance to which class of antibiotics?
• To cover S. saprophyticus in uncomplicated cystitis, which of the following is commonly used?
• Which of the following is a beta-lactam antibiotic listed as a first-line regimen for uncomplicated UTI in adults?
• Which macrolide is the preferred agent for treating Mycobacterium avium complex infections in HIV patients?
• Which of the following is a beta-lactamase inhibitor?
• Which oral beta-lactam is considered a less effective but appropriate alternative for acute complicated UTI if susceptibility is documented?
• Which antibiotic has shown increasing resistance in Staphylococcus aureus, Pseudomonas aeruginosa, and Serratia marcescens?
• What is used to determine risk for sepsis?
• In uncomplicated diverticulitis without severe features, initial management should include which of the following?
• Which antibiotic is not a cell wall synthesis inhibitor?
• What is an alternative treatment for uncomplicated cystitis in children with a PCN allergy?
• Which antiviral is commonly used to treat herpes simplex virus infections?
• Which drug class includes non-antibiotic medications such as Celecoxib and Sulfasalazine alongside antibiotics?
• Which antibiotic class is considered a second-line option for treating otitis media in adults when Augmentin is not used?
• Are arterial or venous lactate measurements more accurate and preferred?
• Which macrolide is noted to cover the same spectrum as penicillin and is a good option for penicillin-allergic patients?
• Which antibiotic class is known to bind the 30S ribosomal subunit, is bactericidal, and often requires peak and trough monitoring due to nephrotoxicity and ototoxicity?
• Which antibiotic group acts as a folic acid antagonist?
• Which agent is a first-line option for uncomplicated UTI and belongs to the nitrofurantoin class?
• Which antibiotic blocks incorporation of D-alanine into peptidoglycans and is used to treat TB strains resistant to first-line therapy?
• What does it mean when a microorganism is resistant to a particular antibiotic?
• Which antibiotic is used to treat Mycobacterial TB strains resistant to first-line therapy by inhibiting synthesis of peptidoglycan through D-alanine incorporation?
• Which two antibiotics are noted for altering the cell membrane?
• What is a qualitative method of testing ABX sensitivity using impregnated disks on agar, and measuring ABX zones?
• Which antibiotic inhibits peptidoglycan polymerization by binding to D-alanine termini and is effective against all Gram-positive organisms, used for MRSA and C. diff, and requires trough-level monitoring?
• In penicillin-allergic adults with acute sinusitis, which of the following is considered an acceptable alternative therapy?
• What is an alternative antibiotic option for treating chlamydia when doxycycline is not suitable?
• Which elevated lab value is associated with poor prognosis and can be manifested in organ hypoperfusion in the presence or absence of hypotension?
• Which tetracycline shows cerebrospinal fluid penetration, with minocycline as the exception among its class?
• Which of the following is an appropriate oral agent to treat acute complicated UTI?
• Trimethoprim-sulfamethoxazole is commonly used to treat Pneumocystis jirovecii pneumonia (PCP) among other infections.
• What antibiotic is recommended for chlamydia?
• Which antibiotic is a bacteriostatic agent that binds the 50S subunit and is used for severe anaerobic infections including B. fragilis and bacterial vaginosis, with a risk of C. difficile infection?
• Which macrolide covers Haemophilus influenzae, Helicobacter pylori, and Mycobacterium avium complex?
• What is the typical duration of antibiotic therapy for acute prostatitis if symptoms have not fully resolved?
• When M. genitalium is suspected in pelvic inflammatory disease, what is the initial empiric therapy?
• Which of the following is an appropriate option for treating acute sinusitis in a penicillin-allergic adult?
• Which brand name corresponds to the combination of trimethoprim and sulfamethoxazole?
• What is the lowest concentration of ABX which only grew < 0.1% of organisms or killed 99.9%?
• Cephalosporins are a type of antibiotic classified as which class?
• Which outpatient antibiotic can be used for diverticulitis?
• Which term describes a microorganism that might be inhibited by a higher dose or if the antibiotic concentrates at the site of infection?
• Which antibiotic class is NOT recommended for empiric therapy of acute sinusitis due to high rates of resistance in S. pneumoniae?
• Is identifying the organism in culture necessary for the diagnosis of sepsis?
• What antibiotic combination is used to treat pelvic inflammatory disease?
• Which antibiotic class is listed as an outpatient alternative for mild MRSA infection?
• If MIC is very close to the MBC, the antibiotic is more likely to be what?
• Which macrolide is not as strong for Gram-positive organisms but offers good respiratory coverage and is the drug of choice for MAC in HIV patients, as well as treating Chlamydia?
• Resistance to which antibiotic has NOT been documented in group A Streptococcus?
• Which is NOT a first-line therapy for initial C. difficile infection?
• Which term describes a microorganism for which the antibiotic concentration cannot be achieved in the patient's serum?
• Which of the following represents first-line antibiotics for treating community-acquired pneumonia?
• Which antibiotic class is usually given intravenously due to poor oral absorption and is associated with nephrotoxicity and ototoxicity?
• Which antibiotic class is associated with QT prolongation and risk of arrhythmias due to its SE profile?
• Which beta-lactamase inhibitor is paired with piperacillin in a common combination therapy?
• Which ABX strategy is recommended for a patient's first recurrence of C. difficile infection if the initial therapy was oral vancomycin?
• Penicillin is categorized into four groups. Which of the following is one of them?
• A serum lactate level > 4 mmol/L is consistent with, but not diagnostic of, which condition?
• Which macrolide is available in both oral and intravenous formulations?
• Which antibiotic covers Enterococcus in uncomplicated cystitis?
• Which IV antibiotic is most commonly prescribed for inpatient/complicated MRSA infections?
• Which antibiotic is listed as an alternative for inpatient/complicated MRSA infections?
• Which antibiotic is recommended for travelers' diarrhea?
• Which of the following is a beta-lactam antibiotic?
• What is the initial treatment for candida vulvovaginitis?
• Which of the following is NOT a listed first-line antimicrobial regimen for uncomplicated UTI in adults?
• Which antibiotic can cause hemolytic anemia in patients with G6PD deficiency?
• What ABX are used for symptomatic pregnant BV?
• Which antibiotic is bactericidal?
• SIRS is nonspecific and may be caused by ischemia, inflammation, trauma, infection or several insults combined. Which statement is true?
• Which class of antibiotics inhibits DNA gyrase?
• What method to detect resistance is recommended for severe enterococcal infections?
• In disk diffusion (Kirby-Bauer) testing, the growth zones are interpreted by correlating them to which metric?
• Which antibiotic has immediate and extended release formulation and is primarily used for urinary tract infections, covering Gram-positive and Gram-negative bacteria except Proteus and Pseudomonas?
• What test is used for TB diagnosis?
• What is the standard duration of ABX therapy for C diff infection?
• What type of bacteria are most frequently identified in sepsis in the US?
• Which antibiotic inhibits the beta subunit of DNA-dependent RNA polymerase and is used for TB, Haemophilus influenzae, MRSA and MSSA, with strong P450 induction and possible red-orange discoloration of bodily fluids?
• What is the typical duration of outpatient therapy for diverticulitis?
• Which fluoroquinolone is considered acceptable for outpatient mild MRSA therapy?
• In patients with a penicillin allergy, cross-reactivity is most commonly observed with which class of antibiotics?
• The Quick SOFA Score Stands For What?
• What ABX are recommended for severe C diff infection and fulminant colitis?
• What tx is recommended for a patient's third recurrence of C diff infection?
• The closer the MIC is to the MBC, the more _________ the compound.
• What is the Minimum Inhibitory Concentration (MIC)?
• Omadacycline belongs to which antibiotic class?
• Which antibiotic is bacteriostatic among the following?
• Which antibiotic is a synthetic beta-lactam that is resistant to beta-lactamase-producing bacteria and inhibits cell wall synthesis?
• Which organism is considered an atypical cause of community-acquired pneumonia?
• Which antibiotic provides good CSF penetration and is used for meningitis pathogens such as Neisseria meningitidis?
• What defines Systemic Inflammatory Response Syndrome (SIRS)?
• Which antibiotic is used as prophylaxis for patients with prosthetic heart valves undergoing GU/GI surgery when they are allergic to ampicillin?
• Which organism is a common cause of community-acquired pneumonia?
• Which antibiotic can cause a disulfiram-like reaction, metallic taste, GI upset, and CNS symptoms such as dizziness and paresthesias?
• For Trichomonas vaginalis infection, what is recommended regarding sexual partners?
• What is the duration of therapy for complicated cystitis?
• Which method is recommended to detect resistance for Staphylococcus species, Streptococcus pneumoniae, and GBS isolated in pregnancy in patients who are allergic to gentamicin?
• Which antibiotic is primarily administered intravenously and carries a significant risk of bone marrow suppression and aplastic anemia?
• In the setting of treatment failure for M. genitalium infection, which antibiotic should be used next?
• In complicated UTIs, initial management is typically what?
• What is the duration of therapy for uncomplicated cystitis?
• What ABX are used for symptomatic NONpregnant BV?
• What is recommended for uncomplicated urogenital gonococcal infections in males?
• What is the first-line therapy for acute sinusitis in adults?
• Which antibiotic is structurally related to aminoglycosides, binds the 30S subunit, is given intramuscularly, and can be used as an alternate therapy for gonorrhea when Rocephin is unavailable or resistant?
• Which of the following is a first-line oral agent for outpatient/uncomplicated mild MRSA?
• What test aids in antibiotic therapy choice for patients admitted for lower respiratory tract infections (LRTI) such as community acquired pneumonia, acute bronchitis, acute exacerbation of COPD?
• Which antibiotic is not a beta-lactam but inhibits cell wall synthesis?
• What is the typical duration of CAP therapy with doxycycline or macrolide?
• Which ABX susceptibility testing is described by: Test more than 1 ABX at a time; Better guide to dosage; Not influenced by diffusion rates of ABX thru agar; Test for Minimum Bactericidal Concentration (MBC)
• Which term describes a microorganism that is inhibited or killed by a specific antibiotic?
• What is the typical duration for MRSA therapy in outpatient treatment?
• Which antibiotic is linked to the highest risk of Clostridioides difficile infection?
• How do Staphylococcus and Streptococcus differ morphologically on Gram stain?
• What is the first-line therapy for otitis media in adults?
• Nitrofurantoin is contraindicated in which of the following situations?
• Which beta-lactam antibiotic is a monobactam that disrupts cell wall synthesis by binding to PBPs and has activity mainly against aerobic Gram-negative rods such as Pseudomonas, Klebsiella, and Serratia?
• Adherence to antibiotic therapy is especially critical in patients with a history of which condition?
• Which factor is an important determinant of sepsis outcomes?
• What antibiotic is recommended for gonorrhea?
• Which regimen is recommended for fulminant C diff colitis?
• In a pediatric patient with otitis media who has had beta-lactam therapy within 30 days, purulent conjunctivitis, or recurrent AOM unresponsive to amoxicillin, what is first-line therapy?
• Bacteria to cover with diverticulitis?
• What is a first-line treatment for Trichomonas vaginalis infection?
• Which antibiotic class is used to empirically cover E. coli in uncomplicated cystitis?
• Which carbapenem is paired with cilastatin to prevent inactivation and is used for urinary tract infections?
• Which antibiotic alters the cell membrane, is active against Gram-negative bacteria, and acts as a surface detergent causing leakage of intracellular components?
• What is recommended as an alternative regimen to oral fluconazole for candida vulvovaginitis?
• What does MIC stand for in antimicrobial susceptibility testing?
• In pediatric patients with otitis media and no recent beta-lactam therapy within 30 days, no conjunctivitis, and no history of recurrent AOM, what is first-line therapy?
• Empiric antibiotic therapy for prostatitis should adequately treat which type of organisms?
• Which of the following is listed as a treatment option for symptomatic nonpregnant BV besides antibiotics?
• Which carbapenem is described as effective against most Gram-positive, Gram-negative, and anaerobes but not MRSA, VRE, or C. diff, and is bound with cilastatin to prevent inactivation, enabling UTI treatment?
• Should you give ABX to pregnant patient with asymptomatic BV?
• Linezolid belongs to which antibiotic class?
• Which microscopy-based test can be used to diagnose bacterial vaginosis?
• Which is not a typical cause of community-acquired pneumonia?
• Which of the following is NOT a first-line agent for uncomplicated UTI in adults?
• Which drug is a second-generation cephalosporin commonly used to empirically cover E. coli in uncomplicated cystitis?
• Which condition is associated with the labs hyperlactatemia and procalcitonin more than two SDs above normal?
• Which macrolide covers the same spectrum as penicillin and is a good option for penicillin-allergic patients?
• What is the typical duration of penicillin therapy for GAS pharyngitis?
• Which antibiotic inhibits folic acid synthesis and is active against a wide spectrum including nocardia and E. coli?
• What is the primary purpose of an AFB smear in infectious disease testing?
• Which antibiotic is associated with gray baby syndrome and risk of bone marrow suppression and aplastic anemia when given intravenously?
• Which antibiotic is NOT considered a first-line oral agent for outpatient, uncomplicated MRSA infections?
• Pivmecillinam is listed as a first-line antimicrobial regimen for uncomplicated UTI in adults.
• Which antibiotic class provides broad spectrum coverage including MRSA and MSSA?
• Which antibiotic inhibits folic acid synthesis and is effective against a wide range of organisms including nocardia and Chlamydia, with CSF penetration and several hematologic and dermatologic adverse effects?
• Which antibiotic is used for all Gram-positive infections and is typically administered topically due to nephrotoxicity if given systemically?
• What test is used for risk assessment of critically ill patients for progression to severe sepsis and septic shock?
• According to qSOFA criteria, which combination indicates high risk of poor outcomes?
• What may be an important determinant outcomes in sepsis?
• For uncomplicated UTI, directed therapy should be based on what?
• Which antibiotic class is known to inhibit the cytochrome P450 system and binds to the 50S ribosome?
• Which antibiotic is bactericidal and acts by inhibiting cell wall synthesis by binding D-Ala-D-Ala (not a beta-lactam)?
• Which antibiotic alters the cell membrane, is effective against Gram-negative bacteria, and is bactericidal, with features including increased membrane permeability?
• Bacitracin is not a beta-lactam antibiotic but inhibits cell wall synthesis. Which option best reflects this classification?
• Alternative therapy for uncomplicated gonococcal infections in males if a ceftriaxone-based regimen is not given?
• Which antibiotic is the 30S-binding drug of choice for Chlamydia, mycoplasmas, Lyme disease, and rickettsiae, and should not be taken with dairy?
• Cephalosporins are inactive against which organism?
• What is the recommended duration for chronic prostatitis treatment with fluoroquinolones?
• Elevated serum procalcitonin levels are associated with which condition?
• Which antibiotic is often preferred for treating group A streptococcal pharyngitis in young children due to taste and once-daily dosing?
• Which antibiotic inhibits hepatic cytochrome P450 enzymes and has significant drug interaction potential?
• Which outpatient antibiotic for diverticulitis covers both gram-negative rods and anaerobes?
• Which testing approach tests more than one antibiotic at a time, and is not influenced by diffusion through agar?
• What is the typical duration of therapy for inpatient/complicated MRSA treated with IV antibiotics?
• Which antibiotic inhibits DNA gyrase and is bactericidal, with good penetration into fluids, tissues and bone but limited CNS penetration?
• Which antibiotic inhibits peptidoglycan polymerization by binding to D-alanine termini and is active against all Gram-positive organisms but cannot cross the Gram-negative outer membrane effectively?
• Which antibiotic blocks the transfer of peptidoglycan subunits to a growing cell wall and is primarily active against Gram-positive organisms, with topical use due to nephrotoxicity if systemic?
• What type of pathogens have higher mortality than community-acquired pathogens?
• Which type of pathogens have higher mortality in sepsis?
• Which drug is used in combination with sulfonamides to provide a synergistic effect against urinary tract infections and Pneumocystis jirovecii pneumonia?
• What is the treatment of choice for group A Streptococcus pharyngitis?
• What ABX is appropriate for a patient's first recurrence of C. difficile infection if the initial treatment was fidaxomicin or metronidazole?
• Which statement describes when to use a higher-dose amoxicillin component for otitis media?
• Tinidazole is categorized as what type of antibiotic and used as what regimen for BV?