Normal Blood Pressure By Age – Forbes Health - Forbes

There are five blood pressure stages: normal and four specific stages of hypertension, which range from very treatable to urgent.

Normal

People with a blood pressure range of 90 to 120 systolic and 60 to 80 diastolic have normal blood pressure, says Dr. Wong. A systolic reading below 90 signifies low blood pressure.

Elevated

A blood pressure reading of 120 to 129 systolic and less than 80 diastolic signifies elevated blood pressure and, thus, a higher probability of developing hypertension.

"As blood pressure elevates, there is increased workload on the heart and arteries," says Dr. Desai. "This results in [the] thickening of the heart muscle (hypertrophy), which can lead to heart failure. It also results in [the] micro-tearing of the artery wall, leading to cholesterol deposition (atherosclerosis). This leads to [the] narrowing of the vessel and further elevation of blood pressure."

Hypertension Stage I

Hypertension Stage I is defined by a systolic reading of 130 to 139 and a diastolic reading of 80 to 89.

Dr. Wong says while doctors initially treat this stage of hypertension by suggesting a healthier lifestyle—eating more vegetables and whole grains, using less salt, increasing physical activity and controlling stress—medications may be needed if blood pressure falls in this range on multiple readings over a period of time in people with other cardiovascular risk factors.

Dr. Wong adds that, per 2017 ACC/AHA guidelines, adults with Hypertension Stage I should consider medication after three to six months of nonpharmacologic therapy. There's also a risk of atherosclerosis—thickening or hardening of the arteries caused by a buildup of plaque in the inner lining of an artery—if it isn't treated. Risk factors for atherosclerosis may include high cholesterol and triglyceride levels, high blood pressure, smoking, diabetes, obesity, physical activity and eating saturated fats.

Hypertension Stage II

Hypertension Stage II is marked by a systolic reading of at least 140 and diastolic reading of at least 90. It's generally treated with a mix of medications and a healthy lifestyle prescription, says Dr. Wong. Still, this stage of hypertension is more serious than the former and should be watched carefully.

Hypertensive Crisis

A hypertensive crisis is an emergency situation and occurs when the systolic blood pressure reading exceeds 180 and the diastolic reading exceeds 120. "Immediate organ damage can occur and emergency treatment should be sought if there are symptoms of stroke, headache, visual changes, dizziness, chest pain or shortness of breath," says Dr. Wong.

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