What is the normal blood pressure value after 10 p.m.?

Dec 01, 2022 Source: Cainiu Health

Dr. Tian Hongbo

Introduction

Under normal circumstances, the normal nighttime blood pressure values are the same as daytime values, with systolic pressure ranging from 90 mmHg to 130 mmHg and diastolic pressure from 60 mmHg to 89 mmHg. Blood pressure levels reflect the state of systemic circulation as well as the functional status of small arteries throughout the body. Patients with abnormal blood pressure should regularly monitor their blood pressure and restrict salt intake.

Under normal circumstances, the normal nighttime blood pressure values are the same as daytime values, with systolic blood pressure ranging from 90 mmHg to 130 mmHg and diastolic blood pressure from 60 mmHg to 89 mmHg. A detailed explanation is as follows:

Blood pressure refers to the lateral pressure exerted by circulating blood on the walls of blood vessels. When the heart contracts and pumps blood, the vessels experience higher pressure, known as systolic pressure, or "high pressure." When the heart relaxes, blood continues to flow forward due to the elasticity of the blood vessels, resulting in lower pressure on the vessel walls—this is the diastolic pressure, commonly referred to as "low pressure." In the same individual, blood pressure varies due to factors such as age and circadian rhythm. In most people, blood pressure reaches its lowest level between 2:00 a.m. and 3:00 a.m. It then gradually increases, peaking for the first time between 6:00 a.m. and 10:00 a.m., followed by a decline. A second peak occurs between 4:00 p.m. and 8:00 p.m., after which blood pressure begins a slow downward trend starting around 8:00 p.m. Although an individual's blood pressure fluctuates at different times of the day, the normal range for systolic pressure remains 90 mmHg–130 mmHg, and for diastolic pressure, 60 mmHg–89 mmHg.

Blood pressure levels reflect the state of systemic circulation as well as the functional status of small arteries throughout the body. Individuals with abnormal blood pressure should regularly monitor their readings, limit salt intake, and take medication as prescribed under medical supervision. Do not discontinue medication without consulting a doctor.

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