 [ Symptoms ] what causes high blood pressure and high heart rates in children  my 10 year old is 54 inches tall and weighs about 92lbs he is having high blood pressure along with high heart rates standing still his heart rate gets up to 136 bpm and his blood pressure sitting still gets up to 13<negative_smiley>89 what could be causing this [ Disease ] she should take tamiflu as soon as possible even before the results of her h1n1 swine flu test come back