2025/2026 EXPERT VERIFIED QUESTIONS WITH DETAILED ANSWERS| GUARANTEED
PASS
β-lactam antibiotic MOA - DETAILED ANSWER-All antibiotics in class share the same
mechanism of action: disruption of the bacterial cell wall.
Inhibition of cell wall synthesis
Empiric Therapy - DETAILED ANSWER-start treatment without cultures or prior to
receiving the results of a culture
immediate empiric antibiotics - DETAILED ANSWER-Critically ill patients receive (Fill
in the Answer) after the first set of cultures obtained; do not wait for results.
Bactericidal antibiotics - DETAILED ANSWER-Directly kill bacteria: Agents include
aminoglycosides, beta-lactams, fluoroquinolones, metronidazole, most
antimycobacterial agents, streptogramins, and vancomycin.
preferred for immunocompromised patients such as those with diabetes, HIV, or cancer
and for those who have overwhelming infections
Bacteriostatic agents - DETAILED ANSWER-inhibit bacterial proliferation while the host's
immune system does the killing. Agents include clindamycin, macrolides, sulfonamides,
and tetracyclines
,β-lactam Antibiotics - DETAILED ANSWER-Penicillins, Cephalosporins, Carbapenems,
Monobactams
Penicillins MOA - DETAILED ANSWER-Weaken bacterial cell wall by two actions:
(1) inhibition of transpeptidases
(2) disinhibition (activation) of autolysins.
PBPs (Penicillin Binding Proteins) - DETAILED ANSWER-Transpeptidases, Autolysins,
and other bacterial enzymes are collectively named as because antibiotic class must
bind to them to produce antibacterial effects.
gram-positive bacteria - DETAILED ANSWER-two layers: the cytoplasmic membrane and
a relatively thick cell wall; penicillins are generally very active against these organisms.
Bactericidal effects of the aminoglycosides - DETAILED ANSWER-limited almost
exclusively to aerobic gram-negative bacilli; inactive against most gram-positive
bacteria.
Aminoglycoside Therapeutic Goal - DETAILED ANSWER-Treatment of serious infections
caused by gram-negative aerobic bacilli.
-Requires 02 for uptake;
*INEFFECTIVE AGAINST ANAEROBIC BACTERIA*
Aminoglycoside Black Box Warning - DETAILED ANSWER--associated with irreversible
ototoxicity. Neurotoxic symptoms may also include numbness, tingling, muscle
twitching, and seizures.
-associated with nephrotoxicity.
-can inhibit neuromuscular transmission, causing flaccid paralysis and potentially fatal
respiratory depression
,-risk increased in patients on high doses or with prolonged use; patients with preexisting
renal impairment.
Aminoglycoside Monitoring - DETAILED ANSWER-Drug levels (peaks and troughs) and
renal function must be monitored.
Aminoglycoside High Risk Patients - DETAILED ANSWER-used with caution in patients
with renal impairment, preexisting hearing impairment, and those receiving ototoxic and
nephrotoxic drugs.
Gentamicin Indication (Aminoglycoside) - DETAILED ANSWER-Bacterial infections
caused by aerobic gram-negative bacilli: Pseudomonas aeruginosa; Enterobacteriaceae
Aminoglycoside Contraindication - DETAILED ANSWER-risk for injury to the inner ears is
increased by concurrent use of loop diuretics—these combinations should be avoided.
Sulfonamide MOA - DETAILED ANSWER-Block folic acid synthesis; suppress bacterial
growth by inhibiting the synthesis of tetrahydrofolate, a derivative of folate. In the
absence of tetrahydrofolate bacteria are unable to synthesize DNA, RNA, and proteins.
suppresses the bacterial synthesis of DNA, RNA, and proteins.
Most prominent indication for use of Sulfonamides - DETAILED ANSWER-Urinary Tract
Infection; 90% of these infections are due to Escherichia coli, a bacterium that is usually
sensitive this drug class
Sulfonamide Adverse Events - DETAILED ANSWER-hypersensitivity reactions, blood
dyscrasias, kernicterus (in newborns), hypersensitivty reactions; crystalluria;
"SULF"
, Sunburn (Avoid Sun)
Urine Crystals (Renal; "Kidney Stones"
Love Water -Sulfonamides dry patient out
Folic Acid
Sulfonamides Hyper Sensitivity Reaction - DETAILED ANSWER-The most severe
hypersensitivity response to sulfonamides is Stevens-Johnson syndrome
Sulfonamide Patient Teaching for PO Doses - DETAILED ANSWER-Patients taking PO
doses should drink at least 8 to 10 glasses of water or other noncaffeinated fluids per
day to decrease the risk for crystalluria. (Caffeine may be taken in addition to the other
fluids.)
Sulfonamide Patient Teaching for Photosensitivity - DETAILED ANSWER-To prevent
photosensitivity reactions, advise patients to avoid prolonged exposure to sunlight, to
wear protective clothing, and to apply sunscreen to exposed skin. Tanning beds are to be
avoided.
gram-negative bacteria - DETAILED ANSWER-three layers: the cytoplasmic membrane, a
relatively thin cell wall, and an additional outer membrane; only certain penicillins (e.g.,
ampicillin) are able to cross and reach penicillin binding proteins (PBPs)
Four Major Groups of Penicillins - DETAILED ANSWER-(1) narrow-spectrum penicillins
that are penicillinase sensitive
(2) narrow-spectrum penicillins that are penicillinase resistant
(antistaphylococcal penicillins)
(3) broad-spectrum penicillins (aminopenicillins)