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2024年3月3日 · Your heart rate is the number of times your heart beats in 1 minute. Heart rates vary from person to person. It’s lower when you’re at rest and higher when you exercise. Knowing how to find your...
2015年5月21日 · 1. Myth: A normal heart rate is 60-100 beats per minute. 2. Myth: An erratic heart rate means I'm having a heart attack. 3. Myth: If my pulse is fast, it always means I'm stressed out. 4. Myth: If...
- 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5月14日 · Pulse oximetry, or pulse ox, is a quick, inexpensive, and needle-free test that measures the amount of oxygen in your blood. It shows whether your heart and lungs supply enough oxygen to meet...
2023年3月3日 · Call 911. Our chart below has more details. Even if your diastolic number is normal (lower than 80), you can have elevated blood pressure if the systolic reading is 120-129. Blood Pressure Ranges....
It's natural to lose about 10% to 15% of your muscle mass and strength over your lifetime. This steady decline starts around age 30 and speeds up after you hit 60. Muscle loss happens for a mix of ...
2024年3月12日 · 7 min read. What Is Glomerular Filtration Rate? The glomerular filtration rate (GFR) is a measure of how well your kidneys are removing waste from your blood, which can be determined using an...
