Author + information
- Received July 17, 1984
- Revision received October 23, 1984
- Accepted November 9, 1984
- Published online April 1, 1985.
- ↵*Address for reprints: James C. Huhta, MD, Pediatric Cardiology, Texas Children's Hospital, 6621 Fannin, Houston, Texas 77030.
Evaluation for patent ductus arteriosus by both Doppler examination and direct two-dimensional echocardiography visualization has been reported in infants and children. However, visualization of a patent ductus arteriosus in preterm infants with lung disease has been difficult. Using a recently developed 7.5 MHz mechanical scanner with interfaced two-dimensional directed pulsed Doppler ultrasonography, 36 examinations were performed from a suprasternal approach in 27 patients (age range 1 day to 3 months, mean 18 days; weight range 490 to 2,500 g, mean 1,260).
Complete imaging for evaluation of patency of the ductus arteriosus was successful in 33 (92%) of 36 examinations, and imaging of the pulmonary end of the ductus arteriosus was successful in all. In 18 examinations, the ductus arteriosus was closed by both two-dimensional echocardiography and Doppler examination. In four cases the ductus arteriosus was widely patent by both two-dimensional echocardiography and Doppler examination. Eleven echocardiography examinations revealed a narrowed ductus arteriosus, and of these, 10 (91%) showed Doppler findings of patent ductus arteriosus.
It is concluded that combined two-dimensional/Doppler echocardiography; assessment allows confident detection of both a large unrestrictive and a small, stenotic patent ductus arteriosus in preterm infants with lung disease.
- Received July 17, 1984.
- Revision received October 23, 1984.
- Accepted November 9, 1984.
- American College of Cardiology Foundation