Most arrhythmias result from problems in the electrical system of the heart. If your arrhythmia is serious, you may need a cardiac pacemaker or an implantable cardioverter defibrillator (ICD). They are devices that are implanted in your chest or abdomen. A pacemaker helps control abnormal heart rhythms. It uses electrical pulses to prompt the heart to beat at a normal rate.
Steven Berlin Johnson (born June 6, 1968) is an American popular science author and media theorist.
Steve Jobs arrives with the team from the best-picture-nominated filmâ¦ (Lucas Jackson / Reuters ) Apple co-founder Steve Jobs, who passed away today at the age of 56, had a rare form of pancreatic cancer called pancreatic neuroendocrine cancer, which produces islet cell or neuroendocrine tumors.