Board Review: Bugs and Drugs

 

65-year-old male with a past medical history of diabetes and hypertension who presented with medics to the hospital with complaints of headache, photophobia, and neck pain. Patient on arrival appears to be confused. Vitals are significant for patient with a rectal temp of 101.4. Patient is sent immediately for head CT which is normal. While awaiting lumbar puncture, patient is to be started on empiric antibiotics. What is the best choice from below? 

A. Vancomycin + Ceftriaxone

B. Vancomycin + Ceftriaxone + Dexamethasone

C. Acyclovir + Ceftriaxone

D. Vancomycin + Ceftriaxone + Ampicillin + Dexamethasone 

E. Vancomycin + Ceftriaxone + Ampicillin 

 

 

 

 

 

 

 

 

 

 

 

D. Empirically steroids need to be given to prevent complications that can be caused by pneumococcal meningitis along with ampicillin in this case due to age and risk factor of diabetes requiring coverage for Listeria. 

 

 

 

 

Empiric Therapy for Meningitis 

 

Age/Risk Group

Etiology

Antibiotic choice

Neonates (<1 mo)

GBS Or Group D strep, GNR, Listeria 

Ampicillin + cefotaxime

Children 1mo-23 mo

S. Pneumoniae, Neisseria Meningitidies. S agalactiae, H. Influenzae, E. Coli

3rd Gen Ceph + Vancomycin

age 2-50

N. Meningitidies, S. Pna

3rd Gen Ceph + Vancomycin

Age> 50

N. Meningitidies, S. Pna, Listeria, aerobic GNR

3rd Gen Ceph + Vancomycin+ Ampicillin

Basilar Skull fracture/trauma

S. Pna, H. Influenzae, Group A B-hemolytic strep

3rd Gen Ceph + Vancomycin

Penetrating head trauma

S. Aureus, CoNS, Aerobic Gram- negative Bacilli

Vancomycin + Cefepime or ceftazidime or meropenem

Post Neurosurgery

Aerobic Gram negative Bacilli, S. Aureus, CoNS

Vancomycin + Cefepime or ceftazidime or meropenem

CSF Shunt Infection

Aerobic Gram negative Bacilli, S. Aureus, CoNS, propionibacterium acnes

Vancomycin + Cefepime or ceftazidime or meropenem

*Empiric Vancomycin is added to regimen for concern for penicillin resistant strep pneumonia.* If HSV or VZV is of concern empiric acyclovir should be started. *Dexamethasone should empirically be started on all patients prior to antibiotics in whom there is a concern for pneumococcal meningitis

*CoNS- Coagulase negative staph aureus

 

References

Farkas, Josh etal.“Meningitis and Encephalitis.” IBCC. Jan 2, 2017. <https://emcrit.org/ibcc/meningitis/>. 9/19/19.

Tunkel, Allan et al. “Clinical Features and Diagnosis of Acute Bacterial Meningitis in Adults.” August 2018. <www.uptodate.com>. 9/19/19.

 

Tunkel, Allan et al. “ Initial Therapy and Prognosis of Bacterial Meningitis in Adults.” August 2019. <www.uptodate.com>. 9/19/19.