A 56 year old patient who has been on meropenem and fluconazole for six days for intra-abdominal sepsis has developed new fevers and grown a Gram negative organism in the blood. The sensitivities are given below:
|
Gentamicin |
Tobramycin |
Ampicillin |
Imipenem |
Ciprofloxacin |
Ticarcillin |
|
|
Gram negative |
R |
R |
R |
R |
R |
R |
List three likely causative organisms of the new sepsis. What is an appropriate antibiotic for each of the listed organisms?
1. Stenotrophomonas maltophilia - Bactrim
2. Multi-resistant Acinetobacter – Amikacin/colistin
3. Multi-resistant pseudomonas / Burkholderia - Amikacin
4. Enterobacter/proteus – Amikacin
This question is identical to Question 23.3 from the first paper of 2013.