Objective:To evaluate the effects of the anesthesia method used during the operation of Patent ductus arteriosis(PDA)through cardic catheter without thoracotomy.
Methods Occlusion of the openings of main artery and side artery was performed through double-channeled air pocket tube,with normothermia,normal flowing rate and heart beating.
While conducting hydraulic fracturing, the flow rate is required to be controlled to enable the hall-off to block off and uncord the eyelet based on the stimulation process.