QT延長症候群
In 2003, Vollmer underwent heart surgery to correct a condition called supraventricular tachycardia, which produces a quickened pulse rate of about 240 beats per minute. After that surgery, an electrocardiogram indicated to her cardiologists that she might have Long QT syndrome. Further testing ruled out the condition. Her physicians recommended that she always have a defibrillator at the poolside whenever she swims in case of a heart emergency.