Houston A B, Gnanapragasam J P, Lim M K, Doig W B, Coleman E N
Department of Cardiology, Royal Hospital for Sick Children, Glasgow.
Br Heart J. 1991 Feb;65(2):97-9. doi: 10.1136/hrt.65.2.97.
A clinically undetectable, small ductus arteriosus was identified by Doppler ultrasonography in 21 individuals. Infants were excluded from the study and no patient had pulmonary hypertension. Persistence of the ductus arteriosus is likely to be more common than shown by less sensitive diagnostic methods. Some patients considered to have infective endocarditis with a normal heart may have a silent ductus arteriosus. Evidence of such an association would justify ligation or antibiotic cover as prophylactic measures.
通过多普勒超声检查在21名个体中发现了临床上无法检测到的小型动脉导管未闭。婴儿被排除在研究之外，且没有患者患有肺动脉高压。动脉导管未闭的持续存在可能比敏感性较低的诊断方法所显示的更为常见。一些被认为患有感染性心内膜炎且心脏正常的患者可能存在无症状的动脉导管未闭。这种关联的证据将证明结扎或抗生素预防措施的合理性。
