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2023年10月30日 · Urea nitrogen is a normal waste product created in your liver as it breaks down certain proteins found in your food. Urea nitrogen travels through the blood to your kidneys, which filter out all...
2023年11月8日 · Hyperglycemia is when your blood sugar spikes too high, while hypoglycemia means your blood sugar level is lower than normal. What Causes High Blood Sugar? As your body breaks down the food you...
- 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11月18日 · Viruses can affect your bone marrow and cause low WBCs for a while. Severe infections, such as blood infections, can cause your body to use up WBCs faster than it can make them. Medicines: This is ...
2023年10月12日 · What Do the Test Results Mean? 3 min read. An ApoB test helps your doctor analyze whether or not you are at risk for heart disease . It measures the amount of apolipoprotein B in your blood....
2023年5月5日 · Some ways include: Open windows or get outside to breathe fresh air. Something as simple as opening your windows or going for a short walk increases the amount of oxygen that your body brings in ...
2023年9月19日 · This test checks the amount of certain antibodies called immunoglobulins in your body. Antibodies are proteins that your immune cells make to fight off bacteria, viruses, and other harmful...
