New Technology Clears Clogged Arteries Might reduce number of bypass surgeries, study says    HealthDayNews -- A new technique that uses infrared light and radiofrequency energy to clear blocked arteries may reduce the number of patients who need bypass surgery, says a Dutch study in the October issue of the journal Cardiovascular Interventions.    The study found this guidewire system can navigate blocked coronary arteries, burn through dense scar tissue and reestablish blood flow through severely obstructed arteries...