Could be a number of reasons: 1) Bad stuff sneaks in everywhere if you get lucky with two reviewers and an editor asleep at the wheel. Even good journals. Not

Could be a number of reasons: 1) Bad stuff sneaks in everywhere if you get lucky with two reviewers and an editor asleep at the wheel. Even good journals. Not usually this bad, though. 2) This isn't a particularly good journal and isn't a cardiovascular journal, so they probably got two reviewers who are not knowledgeable about the field. 3) It might also have been an invited paper. These medoum-low journals often solicit reviews, and it's pretty rare to reject a paper that you've solicited.