The Centers for Disease Control and Prevention (CDC) report that approximately every 25 seconds, someone in America will have some type of heart disease event. With heart disease being the leading cause of death in the United States, about one...
When a child says that his heart is racing, more than likely he is experiencing an arrhythmia, or an abnormal deviation of the regular heart rate. When it is a fast heart rate, it is called tachycardia. Although most commonly benign, tachycardia...
The heart and lungs work together to keep a person alive. The heart pumps blood, which has been oxygenated by the lungs, to the rest of the body. The heart and lungs also need an oxygen-rich blood supply to function properly. Breathing problems...
Heart rate or pulse is a term that describes the number of heartbeats you experience in a single given minute. Normal rates vary substantially according to the age of the individual in question. Typically, at the age of 2, a child will have a...
Runners, swimmers, cyclists and others who participate in long-distance sports have to be in top physical condition so their hearts can meet the extra demands placed on their bodies. Not only do months and years of training make the cardiovascular...
What affects your heart rate? Good question. There are many factors that affect your heart rate, like physical or emotional stress, medications, smoking, caffeine, and illness. A person's heart rate fluctuates throughout the day, and people...
Heart attacks are a leading cause of death in the United States. This is especially true among people who have a history of heart disease and previous heart attacks. Heart rate variability is a predictor for the risk of death from heart...
A normal heart rate is between 60 and 100 beats per minute. A person who is very athletic, however, may have a heart rate as low as 40 beats per minute. According to Edward Laskowski of the Mayo Clinic, a lower heart rate in a healthy adult...
Your body's reaction to fear, stress, excitement and anxiety is a result of the instinctive fight-or-flight response. Our bodies involuntarily react to dangerous situations through the sympathetic nervous system. Several responses in various parts...
Exercise may cause weakness if environmental and physiological conditions are not optimal. Weakness is often associated with muscle cramping, fainting, confusion and dizziness. Weakness when exercising can result from a myriad of conditions and...
The heart consists of four chambers: the two upper chambers known as the atria and the two lower chambers known as the ventricles. The right and left side of the heart are separated by a wall known as the septum; blood flows between the chambers...
The normal resting heart rate for a one-to-three-year-old is 70 to 110 beats per minute, according to the Kids Health website. Doctors consider a heart rate higher than 110 beats per minute to be elevated. Most toddlers' heart rates will stay at...
An abnormally high level of the mineral potassium is called hyperkalemia, and it is defined in the medical textbook "Harrison's Principles of Internal Medicine" as a potassium concentration greater than 5.0 millimoles per liter, or mmol/L. The...
