Journal
INDIAN JOURNAL OF THORACIC AND CARDIOVASCULAR SURGERY
Volume 38, Issue 2, Pages 187-190Publisher
SPRINGER INDIA
DOI: 10.1007/s12055-021-01266-2
Keywords
Bartonella henselae; Endocarditis; Aortic valve; Serology; Polymerase chain reaction
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A 75-year-old woman presented with pancytopenia, hepatosplenomegaly, and low-grade fever, and was diagnosed with infective endocarditis caused by Bartonella henselae. She underwent aortic valve replacement surgery and had a smooth postoperative recovery.
Bartonella henselae is well known as a causative organism of cat scratch disease. Although this bacterium infrequently involves the heart, the diagnosis is difficult to confirm. A 75-year-old woman who had a pet cat presented with pancytopenia, hepatosplenomegaly, and low-grade fever. Echocardiography depicted sessile nodules on the aortic valve. C-reactive protein concentration was low, and leukocytosis was not seen. Two sets of blood culture turned out negative. However, elevated B. henselae immunoglobulin G titer led us to the diagnosis of infective endocarditis. Minocycline was administered orally in combination with intravenous administration of gentamicin as an antimicrobial treatment. The patient underwent aortic valve replacement 2 months after her initial visit. Warthin-Starry silver staining did not show any bacterial bodies. The culture of the vegetation tissue was negative. Polymerase chain reaction testing of the excised valve tissue detected the deoxyribonucleic acid of the organism. The postoperative course was uneventful, and the patient was discharged home.
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