Prepare for the Antibacterials (ABX) Exam. Study with flashcards and multiple-choice questions, each question comes with hints and explanations. Get ready to ace your test!

Multiple Choice

Which of the following are respiratory fluoroquinolones?

Respiratory fluoroquinolones are those in the fluoroquinolone class that have strong activity against Streptococcus pneumoniae and atypical pathogens (like Mycoplasma, Chlamydophila, and Legionella) and are therefore preferred for common respiratory tract infections such as pneumonia, sinusitis, and bronchitis. Levofloxacin and moxifloxacin fit this profile well. Levofloxacin has excellentcoverage against S. pneumoniae and atypicals, making it a go-to choice for community-acquired pneumonia and sinusitis. Moxifloxacin also provides strong pneumococcal plus atypical coverage and is widely used for similar respiratory infections, contributing to its designation as a respiratory fluoroquinolone. The other options pair drugs that are more focused on Gram-negative coverage (ciprofloxacin and norfloxacin) or have different spectrums that don’t emphasize pneumococcal activity, so they aren’t classified as respiratory fluoroquinolones in the same way. Gemifloxacin is also a respiratory quinolone, but the pair most consistently recognized as respiratory fluoroquinolones in this context is levofloxacin and moxifloxacin.

Respiratory fluoroquinolones are those in the fluoroquinolone class that have strong activity against Streptococcus pneumoniae and atypical pathogens (like Mycoplasma, Chlamydophila, and Legionella) and are therefore preferred for common respiratory tract infections such as pneumonia, sinusitis, and bronchitis.

Levofloxacin and moxifloxacin fit this profile well. Levofloxacin has excellentcoverage against S. pneumoniae and atypicals, making it a go-to choice for community-acquired pneumonia and sinusitis. Moxifloxacin also provides strong pneumococcal plus atypical coverage and is widely used for similar respiratory infections, contributing to its designation as a respiratory fluoroquinolone.

The other options pair drugs that are more focused on Gram-negative coverage (ciprofloxacin and norfloxacin) or have different spectrums that don’t emphasize pneumococcal activity, so they aren’t classified as respiratory fluoroquinolones in the same way. Gemifloxacin is also a respiratory quinolone, but the pair most consistently recognized as respiratory fluoroquinolones in this context is levofloxacin and moxifloxacin.