What causes normal systolic blood pressure with diastolic blood pressure below 60 mmHg?
Aug 03, 2023
Source: Cainiu Health
Dr. Wang Xin
Introduction
Low diastolic blood pressure below 60 mmHg, despite normal systolic pressure, is also considered hypotension. It is generally associated with prolonged standing, medication side effects, insufficient blood volume, heart failure, hypothyroidism, and other factors. Maintaining a standing, sitting, or lying position for extended periods can alter blood distribution in different parts of the body, potentially leading to a decrease in diastolic pressure.
In general, hypotension is defined as a diastolic blood pressure below 60 mmHg despite normal systolic pressure. It is usually associated with prolonged standing, medication side effects, insufficient blood volume, heart failure, hypothyroidism, and other factors. The specific causes are analyzed as follows:
1. Prolonged Standing
Remaining in a standing, sitting, or lying position for extended periods can alter blood distribution in different parts of the body, potentially leading to decreased diastolic pressure.
2. Medication Side Effects
Certain medications may cause a drop in diastolic pressure. For example, diuretics increase urine output, thereby reducing blood volume; antihypertensive drugs may excessively lower blood pressure; and some antidepressants may affect autonomic nervous system function, resulting in reduced diastolic pressure. In such cases, medication should be discontinued or the dosage reduced under medical supervision to alleviate symptoms.
3. Insufficient Blood Volume
Blood volume deficiency is a common cause of low diastolic pressure. This may result from severe bleeding, dehydration, or intense vomiting or diarrhea. When blood volume decreases, cardiac output reduces, leading to lower diastolic pressure. Blood transfusion at a正规 hospital is recommended.
4. Heart Failure
When the heart cannot pump blood effectively, circulation throughout the body is impaired, causing a drop in blood pressure. Heart failure may be caused by myocardial infarction, cardiomyopathy, or valvular heart disease. In such cases, medications such as compound propranolol caffeine tablets or irbesartan-hydrochlorothiazide tablets may be taken as directed by a physician.
5. Hypothyroidism
In patients with hypothyroidism, insufficient thyroid hormone levels reduce sympathetic nervous system activity, which may lead to low blood pressure. Patients may take levothyroxine sodium tablets or thyroid extract tablets as prescribed by their doctor.
If symptoms are severe, prompt medical attention is advised to avoid delaying treatment. Maintaining healthy lifestyle habits in daily life contributes to overall well-being.
