article_snippet: Rare heart condition:
article_snippet: A canoeist with a rare heart condition has been pronounced clinically dead 36 times in a year.
article_snippet: A canoeist with a rare heart condition saw her life turned upside down four years ago when her was diagnosed with a condition called postural orthostatic tachycardia syndrome.
highlights_snippet: Former GB canoeist, 21, has postural orthostatic tachycardia syndrome .
  