Mike Triplett of ESPN noted Brees said he is "concerned" and will see a hand specialist.
Brees was 3-of-5 passing for 38 yards and an interception before he left with the injury. He was replaced by Teddy Bridgewater, who should start under center if Brees winds up missing extended time.
From a fantasy perspective, we can essentially boil this down to one word: nope.
Subbing Bridgewater for Brees drastically hurts every New Orleans offensive player's value.