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Million M., Walter G., Thuny F., Habib G., Raoult Didier. (2013). Evolution from acute Q fever to endocarditis is associated with underlying valvulopathy and age and can be prevented by prolonged antibiotic treatment. Clinical Infectious Diseases, 57 (6), 836-844. ISSN 1058-4838

Lien direct chez l'éditeur doi:10.1093/cid/cit419

Titre
Evolution from acute Q fever to endocarditis is associated with underlying valvulopathy and age and can be prevented by prolonged antibiotic treatment
Année de publication2013
Type de documentArticle référencé dans le Web of Science WOS:000324018100014
AuteursMillion M., Walter G., Thuny F., Habib G., Raoult Didier.
SourceClinical Infectious Diseases, 2013, 57 (6), p. 836-844. ISSN 1058-4838
RésuméBackground. The prevention of Q fever endocarditis through the use of systematic echocardiography and antibiotic prophylaxis in patients with acute Q fever and valvulopathy has never been validated in a cohort study. Methods. From 2007 to 2012, all patients followed at the French National Referral Center for acute Q fever were included in a cohort study. The prevention of endocarditis included a systematic transthoracic echocardiography (TTE) and a 12-month course of doxycycline and hydroxychloroquine prophylaxis in patients with significant valvulopathy. Transesophageal echocardiography (TEE) was performed in patients with a negative TTE and a rapid rise of phase I immunoglobulin G titers. Results. Seventy-two patients were included with a median follow-up time of 22 months. A valvulopathy was identified in 31 patients (43%), being previously unknown in 24 (33%) and diagnosed only upon TEE or a second TTE in 7 (10%). The major determinants associated with endocarditis were age (hazard ratio [HR], 1.07; 95% confidence interval [CI], 1.006-1.13; P = .03), aortic regurgitation (HR, 10.2; 95% CI, 3.2-32.2; P < .001), and mitral regurgitation (HR, 4.78; 95% CI, 1.4-16.0; P = .01). Antibiotic prophylaxis was highly effective (HR, 0.002; 95% CI, .00-.77; P = .04) for the 31 patients with valvulopathy. Conclusions. Acute Q fever could be associated with an increased prevalence of valvulopathy. The evolution from acute Q fever to endocarditis is associated with age and valvulopathy and can be entirely prevented by antibiotic prophylaxis. Although the name "chronic Q fever" suggests otherwise, rapid evolution (< 1 month) was observed.
Plan de classementSanté : généralités [050]
LocalisationFonds IRD
Identifiant IRDPAR00010930
Lien permanenthttp://www.documentation.ird.fr/hor/PAR00010930

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