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Title: Echocardiography has low utility in cancer patients with Staphylococcus aureus bacteraemia: findings from a retrospective study.
Austin Authors: Loh, Zoe ;Estacio, Ortis;Grigg, Andrew P ;Holmes, Natasha E ;Chong, Geoff;Hawkes, Eliza A 
Affiliation: Olivia Newton-John Cancer Wellness and Research Centre
The University of Melbourne, Parkville, Victoria, Australia
Infectious Diseases
Eastern Health, Box Hill, Victoria, Australia
Clinical Haematology
Medical Oncology
Issue Date: Sep-2018
Date: 2018-03-21
Publication information: Supportive Care in Cancer: Official Journal of the Multinational Association of Supportive Care in Cancer 2018; 26(9): 3083-3089
Abstract: To describe the incidence of infective endocarditis (IE) detected on echocardiography in cancer patients with confirmed Staphylococcus aureus bacteraemia (SAB). We retrospectively identified 95 cases of SAB in cancer patients from January 2007-March 2016. Echocardiography was ordered at the discretion of the treating team, and positive findings defined according to the Modified Duke Criteria. Complicated bacteraemia was defined by prolonged bacteraemia, presence of intracardiac device/prosthetic valve, or signs of metastatic infection. Major predisposing risk factors for IE (intracardiac device, prosthetic valve, valvular disease, diabetes mellitus, renal dialysis) were present in 27% of cases. Fifty-one of 95 (54%) had a central venous catheter and 17 (18%) patients had complicated bacteraemia. Echocardiography was performed in 75/95 (79%) episodes, with transthoracic echocardiography (TTE) alone in 56, transoesophageal echocardiography (TOE) alone in 4 and both in 15. Echocardiography was diagnostic for IE in 2 patients (1 TTE, 1 TOE), including one result that led to the diagnosis of IE in a clinically unsuspected case. Four further cases of IE were diagnosed on clinical findings, resulting in an overall rate of IE of 6% (6/95). Five of these cases occurred in patients with complicated bacteraemia or ≥ 1 risk factor for IE. No patient was readmitted due to IE. IE is infrequent in cancer patients with uncomplicated SAB and no risk factors for IE. Performing echocardiography routinely in all cancer patients with SAB rarely alters diagnosis or affects antibiotic management and therefore should be reserved for patients with specific risk factors.
DOI: 10.1007/s00520-018-4162-9
ORCID: 0000-0002-9215-1441
Journal: Supportive Care in Cancer: Official Journal of the Multinational Association of Supportive Care in Cancer
PubMed URL: 29564624
Type: Journal Article
Subjects: Cancer
Infective endocarditis
Staphylococcus aureus bacteraemia
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