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Diastolic blood pressure (DBP) is the pressure exerted on the walls of the arteries when the heart muscle relaxes between beats. When the bottom number of blood pressure (diastole) is over 100 mmHg, it may be called diastolic hypertension (DHT). When the bottom number of blood pressure (diastole) is over 100 mmHg, it may be called diastolic hypertension (DHT). The normal range of diastolic pressure should be 60 to 80 mmHg in adults. Anything above this is considered abnormal (hypertension). However, when blood pressure readings are above 180/120 mmHg, they are dangerous and require immediate medical attention.
Causes of DHT DHT is most commonly associated with
Treatment options for DHT
What is diastolic blood pressure?Diastolic blood pressure means the blood pressure reading during the phase when your heart relaxes (diastole). Force of the blood against the walls of the arteries (the blood vessels carrying blood from the heart to other sites) in the body is called blood pressure. The heart pumps the blood into the arteries as it contracts (systole). This blood pressure reading when the heart is actively contracting to push out blood is called systolic blood pressure. When the heart is relaxing (diastole), some pressure is still exerted on the arterial walls by the blood they contain because of the elastic recoil of the blood vessels. This blood pressure is lower than systolic blood pressure and is called diastolic blood pressure. Blood pressure is expressed in mmHg. This is because mercury (or Hg) was used in the first accurate pressure gauges and is still being used in medicine today as the standard unit of measurement for pressure. Whenever blood pressure is mentioned, systolic pressure generally precedes diastolic pressure.
Both diastolic blood pressure and systolic blood pressure determine the risk of cardiovascular diseases including ischemic heart disease (IHD) such as myocardial infarction or heart attack. According to recent studies, the risk of death from IHD and stroke doubles with every 20 mmHg systolic or 10 mmHg diastolic increase among people who are 40-89 years of age. QUESTIONSalt and sodium are the same. See AnswerWhat causes low diastolic blood pressure?The decrease in your diastolic blood pressure (DBP) probably represents age-related stiffening of your arteries. Because diastole is a time when the heart receives blood, low diastolic pressure may compromise the blood flow to the heart. Causes of low diastolic blood pressure are as follows.
Common signs and symptoms of low DBP may include
Studies have shown that very low DBP is associated with an increased risk of heart disease. More importantly, a study found that low DBP was associated with an increased likelihood of coronary heart disease events and mortality. Studies explained that if individuals have DBP that is too low, they might not receive enough blood flow to the heart muscle itself, and this could lead to elevations in troponin (cardiac enzyme). Over time, it’s not just elevations in troponin but low DBP that cause actual damage to the heart muscle. Research, however, shows that high systolic readings are the most predictive of a harmful cardiovascular outcome. As a result, they were given more weight in cardiology guidelines and estimating risk. Having both numbers within a healthy range is good for you and your heart. Health NewsIs low diastolic blood pressure dangerous?Low diastolic blood pressure may cause serious consequences. Diastole is the phase when your heart is relaxing. During this phase, the blood flows through the blood vessels supplying the heart (coronary arteries) to deliver oxygen and nutrients to the heart.
SLIDESHOWHow to Lower Blood Pressure: Exercise and Tips See SlideshowIs a diastolic blood pressure of 64 mmHg too low?Diastolic pressure lower than 60 mmHg is generally regarded as serious. Thus, a diastolic pressure of 64 mmHg is not too low. There may, however, be individual variations. Hence, if you have any symptoms of low blood pressure such as dizziness, confusion, sweating, blurred vision, or unusual thirst, you must seek medical help. Low diastolic pressure in the absence of low systolic pressure is called isolated diastolic hypotension. It is defined as a diastolic blood pressure of less than 60 mmHg along with a systolic blood pressure of more than or equal to 100 mmHg. Subscribe to MedicineNet's Heart Health NewsletterBy clicking "Submit," I agree to the MedicineNet Terms and Conditions and Privacy Policy. I also agree to receive emails from MedicineNet and I understand that I may opt out of MedicineNet subscriptions at any time. Medically Reviewed on 3/2/2022 References Medscape Medical Reference American Journal of Hypertension NEJM When should you worry about the bottom number of blood pressure?Over time, isolated diastolic hypotension can cause heart failure. In fact, it may be one of the most common causes of heart failure. Pay attention to your diastolic number when you have your blood pressure checked. If your lower number is 60 or below, ask a healthcare professional about it.
What does it mean when your bottom blood pressure number is high?Diastolic pressure is the bottom number of a blood pressure reading. IDH occurs if someone has elevated diastolic blood pressure, increasing a person's risk of heart disease and stroke. Smoking, consuming alcohol, obesity, and high blood fat may lead to IDH.
Is 140 over 70 a good blood pressure?ideal blood pressure is usually considered to be between 90/60mmHg and 120/80mmHg, while the target for over-80s is below 150/90mmHg (or 145/85mmHg at home)
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