Infectious Disease
Expert guidance on antimicrobial stewardship, emerging infections, and complex infectious disease management.
Recent Discussions
How do you decide when to initiate antibiotics for superimposed bacterial pneumonia in patients with influenza?
Antibiotic therapy should not be routinely prescribed for patients with influenza and should instead be reserved for those with a specific clinical concern for secondary bacterial pneumonia. This diagnosis is best identified by clinical trajectory. Key triggers include initial improvement followed b...
How do you decide whether to empirically cover Pseudomonas for pneumonia in hospitalized patients?
The decision to empirically cover Pseudomonas aeruginosa in pneumonia among hospitalized patients depends on the pneumonia type (community-acquired pneumonia, CAP vs. hospital-acquired pneumonia, HAP), disease severity, etiology, and specific risk factors. For Community-Acquired Pneumonia (CAP) Pa...
Do you continue PJP prophylaxis indefinitely in patients on rituximab maintenance therapy?
Risk for PJP infection is usually in the context of moderate-high dose corticosteroid therapy or low T cell counts.
Do you still use fever as a minor criterion when applying the Duke–ISCVID criteria for infective endocarditis given data suggesting diagnostic accuracy may improve when it is omitted?
Actually, I still use fever as a minor criterium. I have not really thought much about it and have no instances where culture-negative endocarditis has come up since the publication. In fact, no one in my division has even brought this up for discussion. Anyhow, I think this is a minor modification....
How would you manage a patient with viremia up to 400 copies/mL on CAB/RIL injections who was previously undetectable on BIC/FTC/TAF and with prior genotypic testing without drug resistance mutations?
We have definitely seen treatment failure with CAB/RPV, which unfortunately made using both classes of medications impossible. Assuming usual issues of adherence and attending appointments are not issues, I would review the administration technique, particularly if the patient has an elevated BMI or...
Have you used Karius to work up fevers in the hospital when the source remains unknown?
This is a tricky question because Karius is an expensive test, which many experts believe should not be used for its negative predictive value (and I have anecdotally seen negative results where infection was still present, and infections/organisms detected of very unclear significance). I like to u...
When do you consider PET/CT to evaluate for an occult source of infection in patients with persistent bacteremia if TTE/TEE does not show evidence of endocarditis?
Great question. Generally, I consider PET/CT to evaluate for an occult source of infection in patients with persistent bacteremia if TTE/TEE does not show evidence of endocarditis, in the following scenarios: Persistent bacteremia ≥72 hours. TEE was negative or nondiagnostic. No source identified o...
What is your preferred first-line regimen to treat a severe or fulminant C difficile infection?
IV vancomycin and PO Flagyl are the easiest combination to get for a hospitalized patient. I’ve had much experience with this, and it works very well. IV vancomycin and PO Flagyl as initial treatments in the hospital is my preference. This is before I go onto stronger drugs, with those requiring al...
What is your preferred laboratory test to assess treatment response or infection resolution in patients with bacterial pneumonia?
I don't generally check a laboratory test to assess resolution. I go more by their improved clinical status and seeing them get back to baseline oxygen status. If I am trending a WBC or procal, I do like to see it trend down, but it's not the only lab I hang my hat on to decide if someone has resolv...
What approaches can we take to initiate therapy and improve survival rates in patients with HLH?
At our institution, we have comprised a multidisciplinary team to help treat these patients. The team or "HLH task force" as we like to call ourselves is comprised of a clinical immunologist, rheumatologist, dermatologist, critical care physician, hepatologist, BMT attending/hematologist, infectious...