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相邻颗粒链菌所致双瓣膜心内膜炎

Bivalvular endocarditis due to Granulicatella adiacens.

作者信息

Garibyan Vartan, Shaw David

机构信息

Scripps Mercy Hospital, Graduate Medical Education, San Diego, CA, U.S.A.

出版信息

Am J Case Rep. 2013 Oct 24;14:435-8. doi: 10.12659/AJCR.889206. eCollection 2013.

Abstract

PATIENT

Male, 50 FINAL DIAGNOSIS: Bivalvular endocarditis due to Granulicatella adiacens Symptoms: Fever • fatigue

MEDICATION

  • Clinical Procedure: Echocardiogram • valve replacement surgery Specialty: Infectious Diseases.

OBJECTIVE

Rare disease.

BACKGROUND

Infective endocarditis remains a prominent cause of morbidity and mortality worldwide. It has been estimated that 50% of cases are caused by streptococcal organisms. Abiotrophia and Granulicatella, often grouped as nutritionally variant streptococci (NVS), have become recognized as the cause of nearly 5% of infective endocarditis cases. NVS endocarditis historically has a higher rate of morbidity and mortality, partially due to difficulties in adequately culturing and treating the causative organisms.

CASE REPORT

In this report, we review the complicated hospital course and successful treatment of a middle aged Hispanic gentleman who presented with systemic symptoms of fevers, chills and weight loss over 3 months. He was found to have Granulicatella infective endocarditis of the mitral and aortic valves, presumably from a dental source. Despite severe valvular insufficiency noted on echocardiogram, the patient did not initially present with any symptoms of decompensated heart failure. With adequate antibiotic therapy followed by replacement of both valves, the patient had a successful recovery.

CONCLUSIONS

This case report highlights the growing role that nutritionally variant streptococcus plays in endocarditis and how crucial early identification of the organism is to proper treatment. A brief literature review is also included about the diagnosis and recommended management of nutritionally variant streptococcal endocarditis.

摘要

患者

男性,50岁

最终诊断

毗邻颗粒链菌引起的双瓣膜心内膜炎

症状

发热、疲劳

用药情况

临床检查

超声心动图、瓣膜置换手术

专科

传染病学

病例特点

罕见疾病

背景

感染性心内膜炎仍是全球发病和死亡的一个主要原因。据估计,50%的病例由链球菌属微生物引起。阿氏放线杆菌属和颗粒链菌属,常被归类为营养变异型链球菌(NVS),已被确认为近5%的感染性心内膜炎病例的病因。历史上,NVS心内膜炎的发病率和死亡率较高,部分原因是难以充分培养和治疗致病微生物。

病例报告

在本报告中,我们回顾了一位中年西班牙裔男性患者复杂的住院病程及成功治疗过程。该患者在3个月内出现发热、寒战和体重减轻等全身症状。经检查发现其二尖瓣和主动脉瓣有颗粒链菌感染性心内膜炎,推测感染源为牙科治疗。尽管超声心动图显示严重瓣膜功能不全,但患者最初并未出现失代偿性心力衰竭的任何症状。通过适当的抗生素治疗并随后置换两个瓣膜,患者成功康复。

结论

本病例报告强调了营养变异型链球菌在心内膜炎中日益重要的作用,以及早期识别该病原体对恰当治疗的关键意义。还包括了关于营养变异型链球菌性心内膜炎诊断和推荐治疗的简要文献综述。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2046/3809985/23ce843ce569/amjcaserep-14-435-g001.jpg

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