As it turns out, Alex Pietrangelo's goal in the third period of the Blues' loss to Dallas on Oct. 24 was memorable for more reasons than one.

It was Pietrangelo's first goal in the NHL, and two home games later, it remains the team's last goal at Scottrade Center.

The Blues were shut out for the second straight game Saturday, losing 4-0 to the Florida Panthers, and have now gone 123 minutes, 50 seconds without scoring at home.

The team has scored only seven goals in six games at Scottrade Center this season, and one was an empty-netter. The Blues registered a season-high 34 shots against Florida, giving them 66 in their last two games, but again they were kept off the board.

"Whatever it is, we have to put pucks in," said Blues forward Brad Boyes, who has 11 of those 66 shots and nothing to show for it. "Enough is enough here. ... The way things are going, at home, we're not playing tough. I don't have the answers, but we've got to keep going forward."

The Blues dropped to 1-5 this season at Scottrade Center, where they'll return Thursday to face the Calgary Flames. The club could be without center Andy McDonald, who left Saturday's game in the third period after sliding hard into the boards.

The Blues had lost only once on Halloween in their 43-year history, but Saturday was scary bad. Among the crowd of 17,943, many of whom were in costumes, there seemed to be ghosts from the 2005-06 and 2006-07 seasons lingering in the building.

The ingredients were in place for a bounce-back effort against Florida. The Blues were looking for redemption after a 2-0 loss to Phoenix on Thursday and had Friday to regroup and put in some practice time on their abysmal power play.

Florida, meanwhile, played Friday night in Dallas, where it won 6-5 in a shootout. But the Panthers were 0-3 on the second night of back-to-back games, and had been outscored 12-3 in those three losses.

"You want to jump on a team early, and we didn't do that," the Blues' Keith Tkachuk said. "We knew they played last night. Obviously they had a big win (Friday) night, but they were struggling before that."

Florida, which was 2-7-1 before Friday's win over the Stars, took a 2-0 lead on goals by Cory Stillman and Stephen Weiss in the first period.

Midway through the first period, Florida's Nathan Horton stood behind the Blues' net and backhanded a pass through Pietrangelo to the front of the net, where Stillman stood wide-open. He put the Panthers ahead 1-0 with 9:24 left in the first period.

With just under five minutes left in the period, the Blues had an opportunity to snap a 0 for 20 power-play drought, but they couldn't convert.

Just after the power play expired, the Panthers increased their lead to 2-0 lead on Weiss' goal with 2:36 remaining.

"We're having such a tough time scoring ourselves, and yet we give up two easy goals," Blues coach Andy Murray said. "When you're struggling to score, like we are at this time, you've got to be so solid defensively and unfortunately we weren't."

The Blues had a second power-play chance in the second period, but had trouble even keeping the puck in the zone. They were 0 for two with the man-advantage Saturday, and now have gone 22 power plays without scoring.

In the third period, the Blues lost one of their co-leading scorers when McDonald went down. He was chasing the puck with Florida defenseman Keith Ballard when he fell forward into the end boards in the offensive zone, hitting his right shoulder and the side of his face.

McDonald was helped off the ice and didn't return to the game. The Blues had no update after the game.

There seemed to be no inspiration drawn from the 2-0 deficit or the injury, as the Blues trudged through the third period.

Dennis Seidenberg gave the Panthers a 3-0 lead and Horton added an empty-netter with 2:58 remaining in the game.

Late in the third period, fans in the upper-deck at Scottrade Center were chanting, "Just one goal ... just one goal."

Florida goalie Tomas Vokoun kept his shutout intact, stopping all 34 Blues' shots.

The consecutive shutout defeats for the Blues marked the first time that's happened since Feb. 28-29, 2004, when they were blanked in back-to-back games against Vancouver and San Jose. Their last back-to-back shutouts at home came Nov. 20 and 22, 1997.

The Blues will return to practice Sunday and address their problems.

"We've just got to find a way to work hard this week and find a way to get back," Tkachuk said. "You can be negative all you want. It's not the way we're supposed to be playing, and we need people stepping up ... there's no question about it, but we have to stick together somehow and find a solution."