Ceftazidime-Avibactam Treatment Guidelines

Infection-Specific Treatment Recommendations

For complicated intra-abdominal infections (cIAI), ceftazidime-avibactam should be given concurrently with metronidazole 500 mg IV every 6-8 hours, with a treatment duration of 5-14 days, as recommended by clinical guidelines 1
For complicated urinary tract infections (cUTI) including pyelonephritis, the dosage of 2.5 grams every 8 hours is recommended, with a treatment duration of 7-14 days 2
For carbapenem-resistant Enterobacterales (CRE) infections, ceftazidime-avibactam is recommended as a treatment option, with a dosage of 2.5 g IV every 8 hours for CRE urinary tract infections specifically 2
The American College of Clinical Pharmacology recommends considering ceftazidime-avibactam for the treatment of hospital-acquired and ventilator-associated bacterial pneumonia, with a treatment duration of 7-14 days, although the specific guideline is not mentioned in the provided text, the strength of evidence for this recommendation is not provided 1

The Journal of Microbiology, Immunology and Infection reports that emergence of ceftazidime-avibactam resistance in carbapenemase-producing K. pneumoniae has been reported, particularly with prior administration of the drug, with risk factors for resistance development including mutations in the bla KPC-3 gene 2

The International Journal of Antimicrobial Agents suggests that for most E. coli infections sensitive to ceftazidime-avibactam, monotherapy is appropriate, except for complicated intra-abdominal infections requiring anaerobic coverage 3

Italian guidelines, as noted in the International Journal of Antimicrobial Agents, indicate that there is insufficient evidence supporting or refuting combination therapy with ceftazidime-avibactam for carbapenem-resistant Enterobacterales, though some suggest potential benefit in severe pneumonia 3

The American Academy of Pediatrics recommends a weight-based dosing of 62.5 mg/kg (ceftazidime 50 mg/kg and avibactam 12.5 mg/kg) IV every 8 hours, with a maximum dose of 2.5 grams, for pediatric patients aged 2 to <18 years 4
For pediatric patients aged 3 to <6 months, a dose of 50 mg/kg (ceftazidime 40 mg/kg and avibactam 10 mg/kg) IV every 8 hours is recommended 4