Systolic pressure

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Systolic pressure is the pressure in the arteries as the cardiac muscle contracts, it is measured in mm Hg.[1] When a blood pressure reading is taken the systolic pressure is seen as the numerator and the diastolic pressure is the denominator. [2] A systolic pressure reading of below 120 mm Hg is within the normal range, where as if the reading is 120 - 139 mm Hg the patient is said to have Prehypertension. Stage 1 hypertension patients have a systolic pressure of 140 - 159 mm Hg and stage 2 hypertension patients have a systolic pressure above 160 mm Hg.[3]


  1. Linus Pauling Institue (2009) Dietary and Lifestyle Strategies to Control Blood Pressure, available at: accessed 25/11/14
  2. American Heart Association (2014) Understanding Blood Pressure Readings, available at: accessed: 25/11/14
  3. National Heart, Lung and Blood Institute (2012) What is High Blood Pressure? Available at: accessed: 25/11/14
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