Drug use-related right-sided infective endocarditis complicated by empyema and bronchopleural fistula

Right-sided infective endocarditis is frequently accompanied by septic pulmonary emboli, which may result in a spectrum of respiratory complications. We present the case of a 25-year-old woman diagnosed with infective endocarditis secondary to intravenous drug use. During a long and arduous hospital course, the patient developed empyema with bronchopleural fistula, representing severe but uncommon sequelae that may arise from this disease process. She was treated with several weeks of antibiotics as well as surgical thorascopic decortication and parietal pleurectomy.

Tricuspid valve endocarditis following over-the-counter intravenous injection of skin-whitening products

Intravenous drug use, central catheters and intracardiac devices are known predispositions to right-sided infective endocarditis (IE). We report a case of tricuspid IE caused by Acinetobacter seifertii and Enterobacter bugandensis as a result of intravenous use of skin-whitening products bought online. Clinical implications and pharmaceutical regulations are briefly discussed.

HEMATOGENOUS PULMONARY NODULES

Septic pulmonary embolism is an uncommon disorder that is most often seen in patients with predisposing situations (intravenous drug use, endocarditis, septic thrombophlebitis, central venous catheter infections…). The clinical signs are non-specific. CT scan is useful for diagnosis showing bilateral pulmonary nodules with some orienting signs. We report a case of a 43-year-old woman, with a history of hemodialysis via a tunneled jugular catheter, who presented with acute respiratory distress and fever, chest CT showed multiple bilateral nodules, some of which are excavated. Blood cultures showed a staphylococcus aureusbacteremia. The diagnosis of septic emboli was made in view of all the clinical, biological, and radiological elements.

Septic Pulmonary Embolism Causing Recurrent Pneumothorax in an Intravenous Drug User without Right-Sided Valvular Vegetation in Infective Endocarditis

The following report illustrates a case of a 36-year-old Caucasian male with intravenous drug use (IVDU) induced septic thrombophlebitis presenting with recurrent unilateral pneumothoraces from septic pulmonary embolism (SPE) without the presence of obvious right-sided valvular vegetation in infective endocarditis (IE), defined as tricuspid or pulmonary valve lesions. Pneumothorax (PTX) has been observed as a rare complication of SPE and is commonly associated with infective right-sided IE, IVDU, and intravascular indwelling catheters. However, this case is novel as it is the very rare documented case of recurrent, unilateral, spontaneous right PTX refractory to multiple chest tube placements in such a setting. Therefore, the absence of detectable right-sided valvular vegetation in IE does not obviate the risk of SPE-induced PTX in IVDU and further expands the realm of infectious and pulmonary consequences of SPE and IVDU.

CD46 Genetic Variability and HIV-1 Infection Susceptibility

CD46 is the main receptor for complement protein C3 and plays an important role in adaptive immune responses. CD46 genetic variants are associated with susceptibility to several infectious and autoimmune diseases. Additionally, CD46 function can be subverted by HIV-1 to evade attack by complement, a strategy shared by viruses of other families. We sought to determine the association between CD46 gene variants and HIV-1 acquired through intravenous drug use (IDU) and sexual routes (n = 823). Study subjects were of European ancestry and were HIV-1 infected (n = 438) or exposed but seronegative (n = 387). Genotyping of the rs2796265 SNP located in the CD46 gene region was done by allele-specific real-time PCR. A meta-analysis merging IDU and sexual cohorts indicates that the minor genotype (CC) was associated with increased resistance to HIV-1 infection OR= 0.2, 95% CI (0.07–0.61), p = 0.004. The HIV-1-protective genotype is correlated with reduced CD46 expression and alterations in the ratio of CD46 mRNA splicing isoforms.

874. Impact of Telehealth in HIV Ambulatory Clinic during COVID-19 Pandemic Impact of Telehealth in HIV Ambulatory Clinic during COVID-19 Pandemic

Background HIV outpatient in-person (IN-P) visits were limited during the COVID-19 pandemic, and most patients (pts) were cared for remotely through telehealth (TELE). We sought to evaluate the impact of TELE on HIV infected pts during the pandemic compared to the pre-pandemic IN-P care. Methods Retrospective chart review of pts in an outpatient HIV clinic, study period 03/30/2019 to 03/29/2021. Two periods were defined: pre-COVID (Pre-CO) 3/30/2019 to 3/29/2020 and COVID (CO) 3/30/2020 to 3/29/2021. Data was collected on demographics, HIV risk, type of encounter, number of encounters, CD4, HIV Viral loads (VL) at first, and last visit, treatment regimen information. HIV VL < 200 copies/ml was considered as undetectable. Results A total of 607 pts were evaluated. Mean age 51years; (Range-20-84). Male 306 (50.4%), African American 545(90%), Hispanic 50 (8.2%), white 9 (1.5%), Asian 3(0.5%). HIV risk: heterosexual 437(72%), male sex with male 118(19.4%), intravenous drug use 8 (1.3%). In the Pre-CO period, 530 pts were seen as IN-P; in the CO period 606 pts were encountered of which 304 (50.2%) were TELE visits, 89(14.7%) IN-P, 213(35%) had both TELE and IN-P encounters. Mean number of encounters were 2.59 in the Pre-CO and 2.46 during CO. The number of new pts in the Pre-CO were 36 (7%) vs. 52(8.6%) in the CO (p=0.26). During the pre-CO, 373 pts had CD4 measured at first and last visits, 353(95%) at the first visit and 352 (94.3%) at the last visit had CD4 counts ≥ 200/uL (p=.87); 373 pts had a VL done at first and last visits, 330 (88.5%) at the first visit and 337(90.3%) at last visit were undetectable (p=0.41). During CO, 445 pts had CD4 measured at first and last visits, 402 (90.3%) at the first visit and 445(94.2%) at the last visit had CD4 count ≥200/uL (p=0.03); 448 pts had VL measured at first and last encounters, 389(87%) at the first visit and 417(93%) in the last visit were undetectable (p=0.002). Antiretroviral changes occurred in 29% in the Pre-Co compared to 19% in the CO (p=0 .32). Conclusion In our clinic, more pts were cared for during the CO period compared to the Pre-CO period. Significantly, more pts had undetectable HIV VL during CO period. At least one TELE visit was utilized by over ¾ of the pts. TELE has a potentially important role in future HIV care without compromising patient outcomes. Disclosures All Authors: No reported disclosures

Polymicrobial native valve endocarditis due to Bacillus cereus and Cardiobacterium hominis

We present a case of polymicrobial subacute bacterial endocarditis and bacteremia with Bacillus cereus and Cardiobacterium hominis in a 72-year-old man with pre-existing mitral valve disease and prior mitral valve repair who presented with renal failure and glomerulonephritis. Bacillus is often a contaminant in blood cultures but has been rarely implicated in patients with invasive infections such as endocarditis. Intravenous drug use, prosthetic heart valves, valvular heart disease and venous catheters are the most frequently described risk factors for Bacillus bacteremia and endocarditis in the medical literature. Management is challenging as Bacillus is resistant to penicillin and cephalosporin antibiotics due to production of beta-lactamase. Polymicrobial endocarditis is uncommon and when it occurs typically involves Staphylococcal species. To our knowledge, this is the first reported case of polymicrobial endocarditis in which both Bacillus and a HACEK organism are implicated.