General manager Lou Lamoriello said it was picked up through echocardiograms as part of Reilly's post-concussion evaluation.
The Islanders announced the signing with the 23-year-old restricted free agent from Sweden on Tuesday.
The New York Islanders will host the 2026 NHL All-Star Weekend at UBS Arena, in Elmont, N.Y., the National Hockey League has announced.
The two Stadium Series games at MetLife Stadium this weekend increased the NHL's total of outdoor games to 41.
The 2024 Stadium Series marks defenceman Noah Dobson’s first NHL outdoor experience with his New York Islanders set to face off against the New York Rangers.
Bortuzzo, 34, had been with the Blues since 2015. He scored two goals in 17 games during their Stanley Cup run in 2019.
Lee has helped raise more than $300,000 for childhood cancer.
Barzal appeared to take a knee-on-knee hit and left the ice immediately.
Horvat’s deal is worth $68 million and carries a $8.5 million salary cap hit through the 2030-31 season.
Dobson, who has already reached the double-digit mark in goals this season, has become a key member of the Islanders defensive corp.
Barzal has led the team in scoring, or been tied for the lead, every season since he became a full-time NHL player in 2017-18.
Bailey has played every one of his 993 NHL regular season games with the New York Islanders.
The New York Islanders have signed defencemen Noah Dobson and Alexander Romanov to three-year contracts.
The New York Islanders captain, is part of an impressive list of late-round draft picks who have gone on to enjoy a prosperous NHL careers.
The Islanders on Monday named Lane Lambert as Trotz's replacement, giving his longtime assistant his first head coaching job in the NHL.
The 59-year-old ranks among the most successful coaches in NHL history and won the Stanley Cup with Washington in 2018.
Bossy helped the Islanders win the Stanley Cup four straight years from 1980-83, earning the Conn Smythe Trophy as playoff MVP in 1982.
The seven-time All-Star was on the ice for the New York Islanders for the opening faceoff against San Jose for his 1,652nd regular-season game.
The New York Islanders defenceman is set to make his first NHL All-Star appearance at a 27 years old
The defenceman suited up with five NHL teams in 16 years and won a Stanley Cup with the 2019-20 Tampa Bay Lightning.