Conclusions The clinical features of drug addicts with IE are: fever,inertia,panting,coughing,cardiac souffle,positive o论静脉药瘾并发IE者临床特征为发热、咳嗽、气促,心脏杂音,血细菌培养阳性合并肺感染,超声心动图检查对右心感染有重要价值。