Cardiac Health

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Breathing is the process of inhaling and exhaling air from the lungs. When a person inhales, his lungs expand and pull life-sustaining oxygen into the body. When a person exhales, the lungs contract, and a waste product called carbon dioxide is expelled from the body, notes WebMD.

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  • What Is the Immediate Post-Heart Attack Action That Should Be Taken?

    Q: What Is the Immediate Post-Heart Attack Action That Should Be Taken?

    A: To respond to a suspected heart attack, the National Institutes of Health recommends that someone call 911 or other local emergency number to summon medical help. A heart attack is a medical emergency.
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  • Can You Have a Heart Attack and Not Know It?

    Q: Can You Have a Heart Attack and Not Know It?

    A: A person can have a heart attack and not know it because not all heart attacks produce recognizable symptoms, according to the American Heart Association. These are known as silent heart attacks.
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  • What Is a Health Cholesterol Level?

    Q: What Is a Health Cholesterol Level?

    A: A healthy serum cholesterol level is 200 milligrams per deciliter or below, according to Mayo Clinic. Readings of 200 to 239 mg/dL are considered borderline high, while readings of 240 mg/dL are classified as high. Keeping cholesterol levels within healthy limits reduces an individual's risk of developing heart disease.
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  • When Would Cardiac Output Be the Greatest?

    Q: When Would Cardiac Output Be the Greatest?

    A: According to WebMD, cardiac output is greatest during intense exercise and when a person is approximately in his 20s. The more intense the exercise, the more blood the body's muscle demand from the heart and, therefore, the cardiac output is normally greater than at rest.
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  • What Is a Silent Heart Attack?

    Q: What Is a Silent Heart Attack?

    A: A silent heart attack is a heart attack that has no symptoms, according to the American Heart Association. It also sometimes refers to a heart attack with minimal or unrecognized symptoms. In any of these three cases, the person having a heart attack does not realize it.
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  • What Is the Ideal Pulse Rate?

    Q: What Is the Ideal Pulse Rate?

    A: According to the Mayo Clinic, the ideal resting heart rate for a healthy adult is between 60 and 100 beats per minute. More athletic people have a more efficient heart and a lower heart rate, with some high-level athletes exhibiting a heart rate of 40 beats per minute.
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  • How Do I Improve My Cardiovascular System?

    Q: How Do I Improve My Cardiovascular System?

    A: According to FitDay, improving the cardiovascular system can be done by cutting back on fats and sugars, eating healthy foods, exercising regularly and getting enough sleep. Good cardiovascular health is crucial for the body not just physically, but psychologically and emotionally as well.
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  • How Can You Keep Your Circulatory System Healthy?

    Q: How Can You Keep Your Circulatory System Healthy?

    A: To keep the circulatory system healthy, it is important to exercise on a regular basis, eat a healthy diet and avoid smoking. It helps to keep the body active by doing exercises, such as walking, jogging, running, biking, skating, jumping and swimming. Additionally, it is crucial to reduce consumption of junk and oily foods.
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  • How Do You Prevent Heart Disease?

    Q: How Do You Prevent Heart Disease?

    A: Anyone of any age can prevent heart disease by adopting a healthy eating and diet plan early, according to the American Heart Association. That means choosing foods that are low in cholesterol, salt, sugar and bad fats, such as saturated fats and trans fats. Eating a wide variety of fruits and vegetables along with good protein sources, such as nuts and lean meats, is also important.
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  • What Causes High Blood Pressure?

    Q: What Causes High Blood Pressure?

    A: According to Mayo Clinic, primary hypertension, or high blood pressure, has no identifiable causes and develops over time. Medical conditions such as chronic kidney disease, thyroid disease, sleep apnea, congenital blood defects and adrenal gland tumors are causes of secondary high blood pressure. Other causes include taking oral contraceptives, using cocaine or amphetamines and abusing alcohol.
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  • What Causes a Fast Heart Rate?

    Q: What Causes a Fast Heart Rate?

    A: According to the American Heart Association, a heart rate of over 100 beats per minute is also referred to as tachycardia and occurs when the heart's electrical signals interfere with the sinoatrial node that is responsible for maintaining a balanced heart rate. Rapid heart rates can be triggered by anxiety, caffeine consumption, excessive alcohol consumption and smoking.
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  • How Many People Die of Obesity Each Year?

    Q: How Many People Die of Obesity Each Year?

    A: As of March 2014, the Centers for Disease Control and Prevention (CDC) estimates that 112,000 deaths in the United States are associated with obesity annually. It is important to note that as Americans focus on exercising and eating healthy, combined with the advancements in medical science and national promotions that support reducing obesity, this estimate is likely to fluctuate, according to the CDC.
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  • How Is a Pacemaker Implanted?

    Q: How Is a Pacemaker Implanted?

    A: During pacemaker implantation, a local anesthetic is given to numb the upper chest, and an incision is made, states Cleveland Clinic. The pacemaker leads are guided through a vein and into the heart, where they attach to the heart muscle. The other end of each lead connects to the pacemaker generator.
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  • How Do You Lower Blood Pressure Without Medication?

    Q: How Do You Lower Blood Pressure Without Medication?

    A: To lower blood pressure without medication, a person should lose weight by exercising often and eating a healthy diet, avoid sodium and alcohol, quit smoking and minimize caffeine intake, notes Mayo Clinic. It is also important to make lifestyle changes that diminish the effects of stress on the body.
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  • How Is the Heart Rate Regulated?

    Q: How Is the Heart Rate Regulated?

    A: Heart rate is regulated by homeostasis, a process by which the body regulates its internal environment during its interaction with the outside environment. A prime example of another variable regulated by homeostasis is body temperature. When the environment is too cold, the brain triggers muscle contractions to raise internal temperature.
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  • What Is a Heart Stent?

    Q: What Is a Heart Stent?

    A: A heart stent is a small tube used to treat narrowed arteries or strengthen weakened arteries, as defined by the National Heart, Lung and Blood Institute. Stent manufacturers use metal mesh or fabric to produce these tubes.
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  • What Causes an Irregular Heartbeat?

    Q: What Causes an Irregular Heartbeat?

    A: There are a number causes of an irregular heartbeat, including eating disorders, bulimia nervosa, atrial fibrillation, thyrotoxicosis, mitral valve prolapse and heart problems, according to Right Diagnosis. Uncommon causes include sickle cell anemia, scleroderma and chronic fatigue syndrome.
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  • How Do You Stop Heart Palpitations?

    Q: How Do You Stop Heart Palpitations?

    A: WebMD notes that heart palpitations can be treated by lowering stress and anxiety levels and by avoiding certain beverages, foods, stimulants and medications. In order to treat palpitations effectively, the cause first has to be determined so that the best treatment can be prescribed.
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  • Can You Reduce Plaque in Your Arteries?

    Q: Can You Reduce Plaque in Your Arteries?

    A: According to The Dr. Oz Show, a person can reduce artery plaque if he stops consuming the foods that caused the plaque to develop and incorporates an abundance of heart-healthy foods into his diet. Foods high in saturated fats, trans fats and cholesterol, such as fast foods and processed meats, cause plaque buildup and should be eliminated. A heart-healthy diet is primarily plant based and contains little fat.
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  • What Is a Heart Tremor?

    Q: What Is a Heart Tremor?

    A: According to the National Heart, Lung, and Blood Institute, a heart tremor, more commonly known as a heart murmur, is when the heart makes an abnormal sound during a physical exam. A murmur is often described by doctors as a whooshing or swishing sound. WebMD reports the majority of murmurs are considered innocent, and an abnormal murmur may be a sign the heart has a damaged valve or other abnormality.
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  • How Can You Lower Cholesterol Naturally?

    Q: How Can You Lower Cholesterol Naturally?

    A: Managing cholesterol without or in addition to the use of medication is best done with a combination of diet and exercise. According to WebMD, daily exercise reduces LDL, or "bad" cholesterol, and increases HDL, or "good" cholesterol, by up to 10 percent. Switching to a diet that's low in cholesterol reduces the amount of cholesterol that's consumed, but might not have a measurable effect, as the body produces cholesterol itself.
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