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2022年11月8日 · 2 min read. What Is a Stye? If you have a small red bump, sometimes with a white head, inside or outside your eyelid, it's probably a stye. It looks like a pimple, and it might be sore. But it's...
- Pathophysiology
- Significance
- Signs and symptoms
- Overview
- Prognosis
A blood pressure reading appears as two numbers. The first and higher of the two is a measure of systolic pressure, or the pressure in the arteries when the heart beats and fills them with blood. The second number measures diastolic pressure, or the pressure in the arteries when the heart rests between beats.
Optimal blood pressure is less than 120/80 (systolic/diastolic). In healthy people, low blood pressure without any symptoms is not usually a concern and does not need to be treated. But low blood pressure can be a sign of an underlying problem -- especially in the elderly -- where it may cause inadequate blood flow to the heart, brain, and other vi...
Chronic low blood pressure with no symptoms is almost never serious. But health problems can occur when blood pressure drops suddenly and the brain is deprived of an adequate blood supply. This can lead to dizziness or lightheadedness. Sudden drops in blood pressure most commonly occur in someone who's rising from a lying down or sitting position t...
Postural hypotension is considered a failure of the cardiovascular system or nervous system to react appropriately to sudden changes. Normally, when you stand up, some blood pools in your lower extremities. Uncorrected, this would cause your blood pressure to fall. But your body normally compensates by sending messages to your heart to beat faster ...
The risk of both low and high blood pressure normally increases with age due in part to normal changes during aging. In addition, blood flow to the heart muscle and the brain declines with age, often as a result of plaque buildup in blood vessels. An estimated 10% to 20% of people over age 65 have postural hypotension.
2023年6月30日 · Heart Failure. Heart Valve Disease. 4 min read. There are many types of heart disease, and each one has its own symptoms and treatment. For some, lifestyle changes and medicine can make a huge...
2024年3月22日 · Cholesterol is a waxy compound found in your cells that is carried through your bloodstream via proteins called lipoproteins. Having high levels of HDL is associated with a lower risk of heart...
2023年3月5日 · 5 min read. Swollen ankles and swollen feet are common and usually not cause for concern, particularly if you have been standing or walking a lot. But feet and ankles that stay swollen or are...
2022年8月12日 · 4 min read. What Is Ulnar Tunnel Syndrome? Ulnar tunnel syndrome is pain, tingling, or numbness in your hand, caused by a pinched nerve in your wrist. It isn’t pleasant, but treatments and...
2023年11月14日 · What Is a Ferritin Blood Test? A ferritin test measures the amount of a blood protein called ferritin, which stores iron. Think of your body as a kitchen pantry. Most of it is stocked with food...
