The study of the anatomic and hemodynamic relationships in a case of coaretation of the aorta complicated by patency of the ductus arteriosus and pulmonary hypertension indicated the necessity for a physiologic approach to the classification of coarctation of the aorta. The origin of existing classifications has been briefly traced and basic anatomic and physiologic considerations in this malfo...

The heterotaxy syndrome is a rare and sporadic disorder. This syndrome presents with situs ambiguus, splenic malformations such as asplenia or polysplenia, and congenital heart disease. Congenital heart diseases associated with this syndrome include a broad variety of manifestations. Patent ductus arteriosus is one of them and percutaneous transcatheter closure can be challenging in the setting...

tion in which there is narrowing or complete obliteration at or below the isthmus of the aorta; that part of the aorta which extends between the origin of the left subclavian artery and the point of insertion of the ductus arteriosus. Bonnet classifies coarctation of the aorta under two headings :? (1) Infantile type in which there is a diffuse narrowing of the isthmus, and is usually associate...

This rare congenital malformation is a round or oval opening between the ascending aorta and the main pulmonary artery above the semilunar valves. It is practically impossible to differentiate this malformation from a patent ductus arteriosus clinically because both malformations may present the same physical, fluoroscopic, roentgen and electrocardiographic findings. Even angiocardiography and ...

Since mid-1973 29 cases of isolated patent ductus arteriosus were treated in the Hong Kong University surgical unit with a new technique of suture and division. This technique has almost eliminated the problem of intraoperative haemorrhage and its consequences.

This article describes a technique which allows the patent ductus arteriosus (PDA) to be closed through a minithoracotomy. It combines a simple method of inducing atelectasis with Ligaclip closure of the PDA through a subaxillary incision. It was used successfully in 11 children and adolescents.

Since the first operation for patent ductus arteriosus performed by Gross in 1938, many papers have been published, Gross himself reporting more than 600 patients treated until 1953. Wide indications for operative treatment are now generally accepted in view of the low operative mortality and the risks that are present without surgery. As to the operation itself, discussion still continues beca...

A study of the histogenesis of elastic tissue in the embryonic ductus arteriosus of Sus scrofa is in accord with the theory that elastic fibrils are directly differentiated in the outlying portion of the protoplasm of the early connective tissue cell. In the occlusion of the postfetal ductus arteriosus of Sus scrofa there is early a hypertrophy of the internal elastic membrane. Subsequently the...

Twenty-five patients with proven patent ductus arteriosus were examined by pulsed Doppler echocardiography (PDE) before invasive assessment. Ten patients had normal pulmonary artery pressures, and by PDE, pandiastolic ductal flow. Fifteen patients had elevation of mean pulmonary artery pressure, and by PDE, all had abbreviations of diastolic ductal flow. PDE correctly distinguished between pati...