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Conditions that can cause low blood pressure. Medical conditions that can cause low blood pressure include: Pregnancy. Changes during pregnancy cause blood vessels to expand fast. The changes may cause blood pressure to drop. Low blood pressure is common in the first 24 weeks of pregnancy.
If the cause of low blood pressure isn't clear or if no treatment exists, the goal is to raise blood pressure and relieve symptoms. Depending on your age, health and the type of low blood pressure you have, there are various ways to do this:
For example, heart problems, such as extremely low heart rate, heart valve problems and heart failure, may cause low blood pressure, because they prevent the body from being able to circulate enough blood. Endocrine disorders, such as adrenal insufficiency, also can trigger low blood pressure.
Orthostatic hypotension — also called postural hypotension — is a form of low blood pressure that happens when standing after sitting or lying down. Orthostatic hypotension can cause dizziness or lightheadedness and possibly fainting.
A typical kidney has about 1 million filtering units. Each unit, called a glomerulus, joins a tubule. The tubule collects urine. Conditions such as high blood pressure and diabetes harm kidney function by damaging these filtering units and tubules. The damage causes scarring.
Over time, having a top blood pressure number that is high can raise the risk of stroke, heart disease, dementia and chronic kidney disease. For adults with high blood pressure, a target blood pressure under 130/80 mm Hg is recommended for those younger than 65.
A problem with the way blood flows in the heart. Unusual changes in the protein called hemoglobin, which carries oxygen in red blood cells. Causes of hypoxemia that are related to problems with blood or blood flow include: Anemia; Congenital heart defects in children — heart conditions that children were born with.
Hyponatremia occurs when the concentration of sodium in your blood is abnormally low. Sodium is an electrolyte, and it helps regulate the amount of water that's in and around your cells. In hyponatremia, one or more factors — ranging from an underlying medical condition to drinking too much water — cause the sodium in your body to become ...
Low potassium (hypokalemia) has many causes. The most common cause is excessive potassium loss in urine due to prescription medications that increase urination. Also known as water pills or diuretics, these types of medications are often prescribed for people who have high blood pressure or heart disease.
The most common cause of dehydration in young children is severe diarrhea and vomiting. Older adults naturally have a lower volume of water in their bodies, and may have conditions or take medications that increase the risk of dehydration.
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