What does it mean when the diastolic pressure is 39 mmHg?

May 15, 2023 Source: Cainiu Health

Dr. Tian Hongbo

Introduction

A diastolic blood pressure of 39 mmHg may be caused by orthostatic hypotension, use of antihypertensive medications, hypothyroidism, or other reasons. When rapidly changing from a seated or lying position to standing, blood pressure may temporarily drop, leading to orthostatic hypotension. The diastolic value typically returns to the normal range within seconds to minutes and does not require specific treatment.

A diastolic blood pressure of 39 mmHg may be caused by orthostatic hypotension, use of antihypertensive medications, hypothyroidism, and other reasons. A detailed analysis is as follows:

1. Orthostatic Hypotension

When rapidly changing from a seated or lying position to a standing position, blood pressure may temporarily drop, resulting in orthostatic hypotension. The diastolic pressure usually returns to the normal range within seconds to minutes and does not require specific treatment.

2. Use of Antihypertensive Medications

If the dosage of antihypertensive drugs is too high, it may lead to decreased blood pressure. Therefore, medications should be taken strictly according to medical advice; increasing the dose without guidance should be avoided to prevent adverse reactions. Antihypertensive drugs include spironolactone tablets, benazepril hydrochloride tablets, etc.

3. Hypothyroidism

Hypothyroidism is a relatively common condition. Thyroid hormones promote vasoconstriction and increase vascular resistance. When thyroid hormone levels are insufficient, blood vessels may relax and vascular resistance decreases, leading to lower blood pressure.

Besides the above causes, low blood pressure may also result from severe hemorrhage, septic shock, hypertrophic obstructive cardiomyopathy, acute myocardial infarction, and other conditions. If abnormally low blood pressure occurs, it is recommended to seek timely medical evaluation and complete relevant examinations for diagnosis and appropriate treatment based on the underlying cause.

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Is low diastolic blood pressure considered hypotension?

Generally, a low reading in either value indicates hypotension—for example, systolic pressure below 90 mmHg and diastolic pressure below 60 mmHg; or systolic pressure below 90 mmHg with normal diastolic pressure; or normal systolic pressure with diastolic pressure below 60 mmHg. Therefore, low diastolic pressure typically refers to a diastolic pressure below 60 mmHg, which is considered hypotension.

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What does it mean when the diastolic pressure is low and the systolic pressure is high?

Low blood pressure generally refers to diastolic pressure, while high blood pressure usually means systolic pressure. Low diastolic pressure combined with high systolic pressure may be caused by factors such as aging, hyperthyroidism, hyperlipidemia, aortic atherosclerosis, or aortic valve insufficiency. Patients should promptly seek medical attention at a正规 hospital to identify the underlying cause and receive targeted treatment. In daily life, patients need to pay attention to proper self-care.