Publications by authors named "Arno M Lechner"

Purpose: Although diagnostic stewardship issues in clinical microbiology harbor an optimization potential for anti-infective consumption, they are only marginally addressed in antimicrobial stewardship (AMS) programs. As part of an AMS point prevalence (PPS) survey we therefore aimed to gain a more dynamic view on the microbiological awareness within therapeutic regimens. By examining whether initial microbiological sampling was performed and in which way microbiological results were incorporated into further treatment considerations we sought to find out to what extent these points determine the appropriateness of treatment regimens.

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Article Synopsis
  • Cervical scrofulous lymphadenitis caused by Mycobacterium avium complex (MAC) is uncommon in immunocompetent adults, requiring thorough clinical and immune system assessments, including advanced genetic analyses.
  • Two patients with lymphadenitis were studied, revealing immune system abnormalities such as lymphopenia and reduced T-cell and B-cell populations, despite normal immunoglobulin levels.
  • The female patient had a specific mutation in the interferon-γ receptor, affecting immune responses, while the male patient had normal receptor levels but still showed impaired T-cell function with reduced cytokine production.
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We report the case of a 56-year-old woman with microfilaremic dirofilariasis due to , which is a very rare condition in humans. Of note, just one of six large-volume blood samples of this patient was positive for microfilariae. Polymerase chain reaction (PCR) and sequencing of the parasite gene determined the geographic origin of the causative helminth.

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Introduction: The indication for surgical valve replacement in cases of infective endocarditis is well defined in current guidelines. However, some patients are not fit or willing to undergo major surgical procedures. Interestingly, to the best of our knowledge, there is scarce information in the literature on how to deal with such cases and what might be the outcome.

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Linezolid is an oxazolidinone antibiotic with activity against gram-positive organisms, particularly methicillin-resistant Staphylococcus aureus (MRSA). To the best of our knowledge, there are only two case reports on rhabdomyolysis in patients treated with linezolid. Here, we describe two cases of serious rhabdomyolysis: one in a patient with septic community-acquired (CA)-MRSA pneumonia and a second case in a patient with suspected catheter-related blood stream infection.

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To the best of our knowledge, Stevens-Johnson syndrome (SJS) has not been reported previously as an adverse reaction to Malarone, which is a combination of atovaquone and proguanil hydrochloride used for antimalarial prophylaxis and therapy. We describe a 65-year-old patient who had SJS with typical clinical and histopathological findings associated with the use of Malarone prophylaxis for malaria. This report should alert physicians to this severe cutaneous reaction, and Malarone should be added to the list of drugs that can potentially cause SJS.

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