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Short PR interval can be caused by many conditions. Not all are harmful.You could be having electrolyte abnormalities, drug effect, some conduction defect like Lown-Ganong-Levine syndrome. Avoid drinking colas and caffeinated drinks like tea or coffee, avoid smoking
which can cause or exacerbate palpitations. Your Doctor should also rule out WPW syndrome which can cause complications like giddiness, syncope
and require treatment. Avoid stress
. Do Yoga
or Pranayam for stress relief. Get 6-8 hours of sleep daily. Eat plenty of fresh fruits and green leafy vegetables and plenty of water. Consult your cardiologist soon and also if you develop shortness of breath
, giddiness, weakness, palpitations.