in guideline Abnormal Cardiovascular System Physiology Tachycardia Fast Heart Rate Racing Heart Suggest update to description Heart Racing http://purl.obolibrary.org/obo/HP_0001649 Suggest update to description in HPO. The original description stated 'A rapid heartrate that exceeds the range of the normal resting heartrate for age', however I think it should be recommended that gender and patient population be included. A rapid heartrate that exceeds the range of the normal resting heartrate for age, gender or patient population. HP:0001649 National Guideline for the Control and Management of Sickle Cell Disease Management of Sickle Cell Disease - The United Republic of Tanzania Consensus Statement on the Care of Patients with Sickle Cell Disease in Canada