The 007 actor received a pacemaker after blacking out on stage in 2003, reported Express News in 2009. “When the heart rate slows to lower levels, blood pressure drops. A drop in blood pressure can cause ‘syncope’ or a blackout spell,” Campbell said. In these cases, doctors use an ambulatory heart rate monitor to track heart rhythm. A pacemaker is recommended when a person's heart rate drops below 50 and they get dizzy or black out. “In addition, if the patient experiences a heart rate pause of more than 3 seconds, a pacemaker is also indicated. When the heart rate slows, injury due to syncope or blackouts can occur,” he added.