In bipolar sealing, the arterial wall will be compressed between the energy device jaws until complete sealing is achieved. The artery will then be divided utilizing fine scissors. In pulmonary arterial branches sealed with Harmonic scalpel, Thunderbeat and Enseal, the arterial wall sealed will be divided in the same sealing step. In the Unipolar cautery arterial sealing, a DeBakey forceps will be utilized to compress the arterial walls together and then sealing will be performed with direct application of the unipolar cautery to the forceps. Complete sealing achieved by complete carbonization of the arterial walls. The artery will be divided with scissors after sealing.