 On 05/26/1999, he underwent placement of a bidirectional Glenn shunt, pulmonary artery angioplasty, takedown of the central shunt, PDA ligation, and placement of a 4 mm left-sided central shunt. 
On 05/26/1999 , he underwent placement of a bidirectional Glenn shunt , pulmonary artery angioplasty , takedown of the central shunt , PDA ligation , and placement of a 4 mm left - sided central shunt .