0 the act of tying a blood vessel or other tube in the body with a piece of thread or wire:
1 the process by which two pieces of DNA (= chemical in cells) are joined
Initial studies on in-utero tracheal occlusion were undertaken by tracheal ligation,111 using clipping of the fetal trachea.
Those patients in whom the procedure was abandoned subsequently underwent uncomplicated surgical ligation.
One patient had 2 major aortopulmonary collateral arteries and required collateral ligation at the same time.
This reinforced the view of cardiologists and the surgeons alike that surgical ligation resulted in virtually complete occlusion of the arterial duct.
The indications for occlusion are similar to those for surgical ligation, though in comparison the occlusion procedure has many restrictions.
The overall results of surgery for ligation of the duct are excellent,15 and surgery is more widely applicable.
This produced better and more consistent results compared to digestion and ligation in one reaction (data not shown).
These continue to be potential problems after ligation of the origin of the subclavian artery from the pulmonary artery.
