Pietrangelo logged an even-strength assist, four blocked shots, one hit and a plus-1 rating in Thursday's 4-2 win over the Blues.
Pietrangelo recorded an assist and two PIM in Wednesday's 2-1 shootout loss to the Avalanche.
Pietrangelo (upper body) will return to the lineup Wednesday against Colorado, per head coach Bruce Cassidy.
Pietrangelo will not be available for Monday's road contest versus Philadelphia, according to Ryan Wallis of Fox Sports Las Vegas.
Pietrangelo (upper body) won't play Saturday versus Montreal, SinBin.vegas reports.
Pietrangelo will miss Thursday's game against Ottawa because of an upper-body injury.
Pietrangelo scored a goal, took four shots and posted a plus-3 rating in Monday's 5-0 win over the Flames.
Pietrangelo recorded three assists in Friday's 6-4 win over the Senators.
Pietrangelo (illness) will play Monday in Game 1 against the Stars, according to Lia Assimakopoulos of The Dallas Morning News.
Pietrangelo (appendectomy) will be a full participant in practice Saturday.