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Fluoroquinolones - Antibiotics Class Overview

Mechanism: DNA Gyrase  and Topoisomerase inhibitors bactericidal 
Side effects: QT prolongation
Fluoroquinolones ... Fluoroquinolones ... - Fluoroquinolones ... - All fluoroquinolones ... #Moxifloxacin #Levaquin
Antibiotic Tissue Penetration

Blood Brain Barrier: Penicilins (IV), 3rd & 4th generation Cephalosporins (IV), Meropenem, TMP-SMX, Metronidazole,
Metronidazole, Linezolid, Fluoroquinolones ... Prostate: Fluoroquinolones ... Beta-lactams, Fluoroquinolones ... Ceftriaxone Bone: Fluoroquinolones
Campylobacter
Clinical 
 • Fever 
 • Abdominal pain 
 • Diarrhea (bloody stools) 
 • Vomiting
severe disease • Fluoroquinolones
Antibiotics and CNS Diffusion

1. Drugs with good CNS diffusion:

- Fluoroquinolones, Fluconazole, voriconazole, Rifampin, Oxazolidinones, Metronidazole

2. Drugs
diffusion: - Fluoroquinolones
Antibiotic Classification by Mechanism of Action

Cell Wall Synthesis: 
Penicillins 
Cephalosporins 
Carbapenems 
Monobactams 
Beta-lactamase inhibitors
Glycopeptides 

 Protein
Topoisomerases: Fluorquinolones
IDSA Recommendations for Preventing and Treating Bacterial Enteric Infections in HIV-AIDS
Preventing Bacterial Enteric Illness:
 • Antimicrobial
prophylaxis with fluoroquinolones ... alternative to fluoroquinolone
Antibiotics used for the Treatment of Pseudomonas Aeruginosa in Adults
 • Penicillin-beta-lactamase combinations: Piperacillin-tazobactam, Ticarcillin-clavulanate
 •
Aztreonam • Fluoroquinolones
Antibiotic Therapy for Spontaneous Bacterial Peritonitis  (SBP)

- Standard therapy 
- Uncomplicated SBp• 
- Nosocomial SBP
Patient receiving fluoroquinolone
Classification of Some Antimicrobial Agents by Their Sites of Action
Inhibitors of metabolism: Sulfonamides, Trimethoprim
Inhibitors of cell
or synthesis: Fluoroquinolones
Outpatient Treatment of with Community-Acquired Pneumonia (CAP)
No comorbidities or risk factors for MRSA or Pseudomonas aeruginosa:
with respiratory fluoroquinolone