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Query: UMLS:C0162871 (abdominal aortic aneurysm)
 8,664 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Nontyphoidal salmonellae are among the most common causes of bacterial gastroenteritis worldwide. They are also notable causes of extraintestinal infections, including bacteremia and vascular infections. Salmonella enterica serotype Choleraesuis is typically associated with invasive infections. We report a patient who had an infected intra-abdominal aortic aneurysm due to an unusually mucoid strain of Salmonella enterica serotype Choleraesuis. The isolate was erroneously identified as Hafnia alvei by the Vitek GNI+ card system. A blood culture isolate taken from the same patient 9 months earlier was also identified as H. alvei by the Vitek GNI+ card system. Despite an apparent cure with intravenous amoxicillin-clavulanic acid at that time, the Salmonella infection had not been cleared and manifested as a ruptured infected abdominal aortic aneurysm. Repeated passage of the strain yielded nonmucoid colonies, which were correctly identified by the API and PHOENIX systems. The isolates from the aneurysm and the former bacteremic episode were found to be identical using pulsed field gel electrophoresis. The fallibility of automated bacterial identification systems is highlighted. Such errors are especially important for isolates in which in vitro antibiotic susceptibility testing does not correlate with the clinical success of treatment, as illustrated by Salmonella infections.
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PMID:Misidentification of a mucoid strain of Salmonella enterica serotype choleraesuis as Hafnia alvei by the Vitek GNI+ card system. 1705 Aug 21

Each year, 1.4 million people in the United States are infected with Salmonella (Beneson et al. [23] Am J Med, 110:60-63, 2001). The most common clinical presentation of Salmonella infection is gastroenteritis which is usually self-limited, lasting between one to four days (Black et al. [24] N Engl J Med, 261:811-816, 1960). Although most infections are mild-to-moderate, serious disease, and death does occur (Voetsch et al. [25] CID, 38:S127-S132, 2004). A rare but increasing number of patients present with Salmonellosis spondylodiscitis resulting from contiguous spread of infection from the adjacent abdominal aorta. Concurrent infection of these structures exacerbates morbidity, necessitating an elevated clinical suspicion in patients with appropriate risk factors, clinical signs and symptoms. Furthermore, an overall mortality rate of 67% makes mycotic abdominal aortic aneurysms highly lethal (Gonda et al. [26] Radiology, 168:343-346, 1988). Thus, early diagnosis is crucial, allowing for prompt antibiotic and surgical management. Laboratory and imaging tests obtained at the initial suspicion for infection of the spine and aorta facilitates diagnosis while minimizing or preventing more serious complications like paresis and aortic rupture. We present a patient with a mycotic abdominal aortic aneurysm infected with Salmonella enteritides that spread to the adjacent lumbar vertebra and left psoas muscle.
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PMID:Salmonella spondylodiscitis associated with a mycotic abdominal aortic aneurysm and paravertebral abscess. 1846 7

We herein report a case study of an HIV-1-infected 64-year-old Japanese man who presented, with an abdominal aortic aneurysm due to non-typhoidal Salmonella. He was admitted with a 7-day history of intermittent left back pain. A culture of a blood specimen yielded gram-negative bacilli, which were identified as non-typhoidal Salmonella. Computed tomography showed an abdominal aortic aneurysm due to the non-typhoidal Salmonella infection. Since such a complication is frequently fatal, its management, especially the timing of surgery, is difficult. Further studies are needed to determine the optimal treatment strategy, however, early diagnosis and prompt careful treatment can reduce mortality.
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PMID:An infected abdominal aortic aneurysm due to non-typhoidal Salmonella in an HIV-1-infected Japanese patient. 2055 52