Is a blood pressure of 150 severe?

Written by Chen Tian Hua

Cardiology

Updated on May 22, 2025

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A blood pressure of 150 mmHg is not necessarily serious by itself; further risk stratification of blood pressure needs to be conducted. If the risk stratification of blood pressure is high or very high, the condition is relatively serious and active antihypertensive treatment is necessary to effectively reduce the future risk of cardiovascular and cerebrovascular events, thus improving the patient's prognosis. If the blood pressure of 150 mmHg is classified as low or medium risk, this level of blood pressure is not serious, but it still requires long-term standardized treatment to control the blood pressure to the target level. If blood pressure is not well controlled, long-term hypertension can gradually make the condition very serious, increase the risk stratification, and significantly raise the likelihood of cardiovascular and cerebrovascular events.

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The difference between hypertensive crisis and hypertensive encephalopathy

Both hypertensive encephalopathy and hypertensive crisis involve a rapid increase in blood pressure, symptoms of headache, restlessness, nausea and vomiting, palpitations, shortness of breath, and blurred vision, with systolic pressure increasing to 200 mmHg and diastolic pressure to 120 mmHg, typically presenting similar clinical blood pressure readings. The main difference between the two is that hypertensive encephalopathy is based on excessively high blood pressure in patients with severe hypertension. Furthermore, hypertensive encephalopathy can lead to clinical signs of cerebral edema and increased intracranial pressure, whereas hypertensive crisis occurs when blood pressure suddenly rises over a short period, causing symptoms due to excessive secretion of catecholamines driven by increased sympathetic nervous excitement.

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What is the difference between hypertensive nephropathy and renal hypertension?

There are fundamental differences between hypertensive nephropathy and nephrogenic hypertension. Firstly, hypertensive nephropathy occurs due to long-term high blood pressure, leading to complications in the kidneys. Generally, the history of hypertension exceeds ten years, and routine urine tests reveal a relatively small amount of protein in the urine. The main damage lies in the renal tubules, whose reabsorption and concentration functions are impaired. The primary treatment is to control the blood pressure well, possibly in conjunction with medication to protect the kidneys. On the other hand, nephrogenic hypertension originates from nephritis causing high blood pressure and is a form of secondary hypertension. In this condition, controlling blood pressure is particularly challenging. Usually, a significant amount of antihypertensive medication is required. Dietary considerations include a low salt and low fat diet, with daily salt intake limited to about three grams, maintaining regular schedules, and avoiding catching colds.

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Normal blood pressure, high blood pressure, and low blood pressure ranges.

Normal adult systolic blood pressure is between 90-139mmHg, and diastolic pressure is between 60-89mmHg. When the systolic pressure exceeds 140mmHg and the diastolic pressure exceeds 90mmHg, this condition is medically referred to as hypertension. When the systolic pressure is below 90mmHg and the diastolic pressure is below 60mmHg, this condition is medically referred to as hypotension. Regardless of whether it is hypertension or hypotension, it often causes symptoms in patients, such as headache, dizziness, and fatigue. Therefore, whether it is hypertension or hypotension, one should visit the hospital's department of cardiology for a formal examination. The doctor will assess the situation on-site to determine if treatment is necessary and how to administer it.

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Hypertensive crisis blood pressure values

At any stage of hypertension development and other disease emergencies, severe life-threatening blood pressure increases can occur, requiring emergency treatment. Hypertensive crises include hypertensive emergencies and hypertensive urgencies. Hypertensive emergencies refer to severe blood pressure increases within a short time—hours or days—with diastolic pressure greater than 130 mmHg and/or systolic pressure greater than 180 mmHg, accompanied by severe dysfunction or irreversible damage to critical organs and tissues such as the heart, brain, kidneys, retina, and major arteries. Hypertensive urgencies may present as increased blood pressure but without obvious target organ damage.

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Symptoms of hypertension

Hypertension is a common and frequently occurring disease clinically. Mild hypertension often has no clinical symptoms and is usually detected during physical examinations when measuring blood pressure reveals an increase. In cases of severe hypertension, individuals with long-term high blood pressure may experience dizziness, a feeling of pressure in the head, and headaches. In serious cases, symptoms can include tinnitus and palpitations, requiring the use of effective antihypertensive medications for management. If patients with hypertension do not use medications to manage their condition, long-term high blood pressure can cause significant harm to the body, leading to cardiovascular and cerebrovascular diseases, hypertension-induced heart disease, and stroke. (Please use medications under the guidance of a doctor.)