When lasers were first used for the treatment in the mid-'80s, researchers believed the channels remained open. It is now thought that the drilling provokes new blood-vessel growth where the laser burns a hole. Scar tissue from the laser holes seems minimal. Gene therapy has no fixed price yet, although it is expected to cost significantly less than bypass surgery. There's no argument that laser therapy provides short-term relief for severe angina.
Some studies suggest longer-term benefits.
You hear him down there. Sometimes he climbs the stairs and beats on the kitchen door. You feed him sublingual pellets of nitro and tell him to settle down. Then, too, I could die waiting. Of course one slides back and forth through a middle range of buoyancy and irritability.