Background: Fenestration in the modified Fontan operation allows right-to-left shunting. which reduces the Fontan pathway pressure and improves cardiac output. However. on account of the fact that persistent right-to-left shunting results in cyanosis and paradoxical emboli. https://www.spidertattooz.com/Metabo-HPT-NT1865DMASTM-18V-MV-15-Gauge-Brushless-Cordless-Angled-Finish-Nailer/