Which statement best describes empiric therapy in antimicrobial treatment?

Which statement best describes empiric therapy in antimicrobial treatment?

• A. The microorganism is tested for susceptibility before starting therapy
• B. Tx is needed immediately
• C. A broad-spectrum agent is always chosen
• D. Therapy is never withheld until results are available

Answer: (B)

Starting treatment before you know the exact microbe is the hallmark of empiric therapy. In suspected infections, time is critical, so therapy is begun promptly based on where the infection is, how sick the patient is, and local resistance patterns, with the goal of covering the most likely pathogens. This approach helps prevent deterioration while lab results identify the organism and its susceptibilities. Once results return, the regimen is adjusted to target the specific organism (de-escalation). Broad-spectrum coverage is common initially, but not always required—narrower choices can be appropriate when the most likely pathogens are known or local data support specific coverage. Susceptibility testing before starting therapy describes targeted rather than empiric therapy, and in practice therapy is often started before results are available to avoid delays.

Starting treatment before you know the exact microbe is the hallmark of empiric therapy. In suspected infections, time is critical, so therapy is begun promptly based on where the infection is, how sick the patient is, and local resistance patterns, with the goal of covering the most likely pathogens. This approach helps prevent deterioration while lab results identify the organism and its susceptibilities. Once results return, the regimen is adjusted to target the specific organism (de-escalation). Broad-spectrum coverage is common initially, but not always required—narrower choices can be appropriate when the most likely pathogens are known or local data support specific coverage. Susceptibility testing before starting therapy describes targeted rather than empiric therapy, and in practice therapy is often started before results are available to avoid delays.