Choi David, Thermidor Marjorie, Cunha Burke A
Infectious Disease Division, Winthrop-University Hospital, Mineola, New York 11501, USA.
Heart Lung. 2005 Mar-Apr;34(2):152-4. doi: 10.1016/j.hrtlng.2004.07.005.
Haemophilus species are an infrequent cause of subacute bacterial endocarditis. Of the Haemophilus species causing endocarditis, H. aphrophilus and H. parainfluenzae are more frequent causes of subacute bacterial endocarditis than H. influenzae. H. parainfluenzae requires growth factor V (nicotinamide adenine dinucleotide) and grows very slowly on routine culture media. H. parainfluenzae is a rare cause of "culture negative" endocarditis because it is a slow-growing organism. We present a case of a 42-year-old intravenous drug abuser with H. parainfluenzae mitral prosthetic valve endocarditis. To the best of our knowledge, this is the first case of mitral prosthetic valve endocarditis caused by H. parainfluenzae in an intravenous drug abuser.
嗜血杆菌属是亚急性细菌性心内膜炎的罕见病因。在引起心内膜炎的嗜血杆菌属中,嗜沫嗜血杆菌和副流感嗜血杆菌比亚型流感嗜血杆菌更常导致亚急性细菌性心内膜炎。副流感嗜血杆菌需要生长因子V(烟酰胺腺嘌呤二核苷酸),且在常规培养基上生长非常缓慢。副流感嗜血杆菌是“培养阴性”心内膜炎的罕见病因,因为它是一种生长缓慢的微生物。我们报告一例42岁静脉注射吸毒者患副流感嗜血杆菌二尖瓣人工瓣膜心内膜炎的病例。据我们所知,这是静脉注射吸毒者中首例由副流感嗜血杆菌引起的二尖瓣人工瓣膜心内膜炎。