Abstract
Article: Echocardiographic Markers for the Prediction of Nonclosure of the Patent Ductus Arteriosus in Premature Neonates
Authors: Thuan Flood, BS, RDCS, Joy D. Guthrie, PhD, RDMS, RDCS, RVT, RCS, RCCS, RVS, FSDMS
Category: Pediatric Echocardiography
Credit: 1.0 SDMS CME Credit
Objectives: After studying the article entitled “Echocardiographic Markers for the Prediction of Nonclosure of the Patent Ductus Arteriosus in Premature Neonates,” you will be able to:
Measure important anatomic and physiologic features of an echocardiographic study of an infant with a patent ductus arteriosus
Determine appropriate risk factors for patent ductus arteriosus
Identify quantitative markers that identify a significant patent ductus arteriosus
The ductus arteriosus connects which two structures? Ascending and descending aorta Pulmonary artery and tricuspid valve Pulmonary artery and proximal descending aorta Aortic arch and left ventricular outflow tract
Patent ductus arteriosus (PDA) is most frequent in infants with a gestational age of less than ___ weeks. 28 30 32 34
In full-term infants, the incidence of a PDA is 1 in ____ births. 1000 2000 3000 4000
Which PDA marker was one of the first to be used by echocardiography? LV ejection fraction PDA/LPA ratio PFO diameter LA/Ao ratio
The foramen ovale is a hole in the fetal heart that allows oxygenated blood to flow from which chamber to which chamber? Left to right ventricle Right to left ventricle Left to right atrium Right to left atrium
For this study, the left pulmonary artery (LPA) was measured in which view? High parasternal long axis High parasternal short axis Right ventricular outflow tract long axis Right ventricular inflow tract long axis
For this study, a PDA in preterm infants was detected using a ___ MHz probe? 5-3 9-6 12-4 8-5
The four markers to predict the presence or absence of a PDA included all except: Left ventricular ejection fraction LPA/PDA ratio Cardiac output LA/Ao ratio
The results of this study were consistent with other studies, indicating that an increase in this ratio was predictive of the presence of a patent ductus arteriosus: LPA/SVC ratio PDA/RPA ratio LV ejection fraction LA/Ao ratio
The combination of which three markers are proposed by which hemodynamically significant PDAs may be identified? LV ejection fraction, LA/Ao ratio, PDA/LPA ratio PFO diameter, LA/Ao ratio, PDA/LPA ratio LV ejection fraction, PDA/LPA ratio, PFO diameter PFO diameter, Ao/LA ratio, LV ejection fraction
Footnotes