Battling for Hearts and Minds

Researchers seek to understand and prevent memory loss in bypass-surgery patients

Your memory or your life? That's the unnerving question that many heart-surgery patients face.

Some 600,000 Americans will undergo heart-bypass operations this year, and research suggests that half will suffer memory loss or other cognitive difficulties in the months that follow. Although the declines tend to be mild and some patients recover, a recent study found that more than two in five will