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2024年5月13日 · Triglycerides. Total Cholesterol Levels. 9 min read. Healthy adults should have their cholesterol levels checked regularly with blood test called a lipid profile. Knowing these numbers can help...
2022年8月20日 · What Is High Cholesterol? There are two major forms of cholesterol: Low-density lipoprotein or LDL, also known as "bad" cholesterol, and high-density lipoprotein or HDL, also called "good"...
2023年3月3日 · Blood Pressure Ranges. 8 min read. What Do Systolic and Diastolic Blood Pressure Numbers Mean? When you get your blood pressure numbers, there are two of them. The first, or “top” one, is your...
- 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...
2023年5月22日 · What Is a Partial Thromboplastin Time Test? Medically Reviewed by Carol DerSarkissian, MD on May 22, 2023. Written by WebMD Editorial Contributors. What Does a PTT Test Look For? Why Would I Need...
2023年10月12日 · 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. Apolipoprotein B attaches to negative types of...
