Streptococcus oralis MitraClip endocarditis following a dental procedure: a case report.

BACKGROUND: Transcatheter edge-to-edge mitral valve repair using the MitraClip device is increasingly used for high surgical risk patients with severe mitral regurgitation (MR). Previous guidelines for infective endocarditis prophylaxis prior to dental procedures focused on high-risk patients, but without explicit recommendation for MitraClip recipients. We believe this could be the first reported case to identify Streptococcus oralis as the causative organism. CASE PRESENTATION: An 87-year-old male with severe MR treated with two MitraClip devices three months prior to index admission, presented with worsening malaise and intermittent chills on a background of multiple comorbid conditions. The patient had dental work a month prior to presentation, including a root canal procedure, without antibiotic prophylaxis. Vitals were significant for fever and hypotension. On physical examination, there was a holosystolic murmur at the apex radiating to the axilla, bilateral pitting edema in the lower extremities, and elevated jugular venous pulsation. A transthoracic echocardiogram showed severe MR with a possible echodensity on the mitral valve, prompting a transesophageal echocardiogram, which demonstrated a pedunculated, mobile mass on the posterior leaflet of the mitral valve. Five blood cultures grew gram positive cocci in pairs and chains, later identified as Streptococcus oralis, with minimum inhibitory concentration to penicillin 0.06 mg/L. Initial empiric antibiotics were switched to ceftriaxone 2 gr daily and subsequent blood cultures remained negative. However, the patient developed pulmonary edema and worsening hemodynamic instability requiring vasopressors. As surgical risk for re-operation was considered prohibitive, the decision was made to continue medical management and comfort-directed care. The patient died a week later. CONCLUSIONS: Despite low incidence, infective endocarditis should be included in the differential among MitraClip recipients. The explicit inclusion of this growing patient population in the group requiring prophylaxis prior to dental procedures in the 2020 ACC/AHA valvular heart disease guidelines is an important step forward.

Halting a SARS-CoV-2 outbreak in a US Veterans Affairs nursing home.

A Veterans Affairs long term care facility on Long Island New York was confronted with a COVID-19 outbreak in late March to Mid-April 2020. Faced with a dwindling supply of PPE, the Infection Control team distributed supplies saved for a possible Ebola outbreak. A COVID unit was created within the nursing home facilitating the geographic isolation of cases; universal testing of residents and employees allowed for the implementation of proper quarantine measures. It was a multidisciplinary team approach led by the Infection Control team that successfully contained this outbreak.

Recurrent Staphylococcus lugdunensis Osteomyelitis of the Lumbar Spine in a Patient on Chronic Hemodialysis.

Staphylococcus lugdunensis is an emerging coagulase-negative Staphylococcus regarded as a formidable pathogen capable of causing significant infections at various body sites including bone and joints. We report the case of a Caucasian elderly male with recurrent lumbar osteomyelitis due to S. lugdunensis. He had a history of chronic low back pain. Besides chronic kidney failure and need for hemodialysis, he had no other history of immunosuppression. He did not have fever or leukocytosis; however, the erythrocyte sedimentation rate was elevated, and repeated blood cultures from the periphery and the hemodialysis access (tunneled catheter) were continuously positive for S. lugdunensis. The diagnosis was made by bone biopsy and culture. The bacteremia cleared after removing of the dialysis catheter. The patient received 8 weeks of antibiotic therapy for the osteomyelitis.