A heartbeat results from the transmission of an electrical signal sent throughout the heart muscle. Under normal circumstances, this impulse follows a specific pathway that leads to the most efficient contraction of the heart and allows for the...
Heart block is a medical condition that causes the heart's electrical signals to be blocked between the atria (upper chambers) and ventricles (lower chambers) of the heart. This block can be partial or complete, resulting in no symptoms to serious...
Most conditions of heart block in children are asymptomatic and do not require treatment. Heart blocks involve varying degrees of dissonance within the electrical system of the heart. In children, many of the causes are congenital and others are...
Heart block may be caused for a number of reasons, and some of the causes result in specific types of heart block. Patients do not always have to exhibit signs and symptoms of heart blocks and may live for years without knowing they have a heart...
The heart consists of four chambers: two upper chambers known as the right and left atria and two lower chambers known as the right and left ventricles. A group of specialized cells in the right atrium, called the sinus node, produce electrical...
A heart block can be acquired, that is, developed after birth; or, less commonly, people are born with a heart block. Heart block is a condition in which the electrical signals between the atria and ventricles of the heart are compromised. There...
A second degree heart block is an interruption of the electrical pulses between the chambers of the heart. This occasionally results in skipped heart beats. Heart blocks are relatively rare but, according to the U.K's National Health Service,...
Heart block is a problem with the heart's electrical system. The electrical impulse for the heart to beat starts in the top chambers of the heart and travels through a network of cells that relay the signal to the lower chambers of the heart,...
Exercise with a heart disease, such as a heart block, presents problems, but you should not completely avoid it. Regular exercise helps with weight loss, reduces cholesterol levels, improves circulation and alleviates stress levels, according to...
Complete, or third degree, heart block is a condition whereby no electrical signals from the top part of the heart, the atria, reach the bottom chambers of the heart, the ventricles. Thus, the ventricles must generate their own electrical...
Second degree heart block describes a disorder of the conduction pathways in the heart. Normally, an electrical impulse initiates at the sinus node located in the right atrium. Cells carry the impulse to the atrioventricular node or AV node...
First-degree heart block is a conduction delay of the electrical impulse through the atria to the ventricles. Normally an electrical impulse travels from atria to ventricle in 0.2 seconds. A first-degree block occurs when the interval is...
First-degree heart block is a condition characterized by a slowing down of the electrical impulse that controls the heartbeat, according to the American Heart Association. This condition is diagnosed after a delay in the heart's electrical impulse...
The heart works by the communication of electrical impulses, which travel through a complexity of fibers called the “bundle of His,” Mayo Clinic reports. When the fibers become damaged, a break in the signals occurs and the blockage...
Blockage or hardening of the arteries is usually referred to as atherosclerosis, a condition that can lead to angina, or chest pain, and heart attacks. The blockage is due to the buildup of cholesterol and fatty deposits on the inner walls of the...
If an artery that supplies the heart with blood and oxygen becomes blocked, cells within the heart can die and a heart attack can occur. A blocked artery can exist without causing symptoms until it become serious. In other cases, there my be...
Electrocardiograms, known as EKGs, can give your doctor a quick clue about life and death situations involving your cardiac health. The EKG is a diagnostic tool that represents the electrical activity that controls your heart. According to Medline...
Your body uses potassium to perform various functions. Potassium is necessary in moderating your muscles and nerves as well as your metabolism. Your body also uses potassium to regulate electrochemical processes. Potassium levels need to remain...
The heart provides blood to the lungs to collect oxygen to expel carbon dioxide, then pumps the blood out to the organs to supply them with oxygen and other nutrients. The organs need a continuous but variable supply of blood. The local blood...
The Merck Manuals, an online library of medical information, says, "Acute coronary syndromes result from a sudden blockage in a coronary artery. This blockage causes unstable angina or heart attack, or myocardial infarction, depending on the...
Diagnostic procedures, ranging from non-invasive to invasive testing, are valuable diagnostic tools for the cardiovascular system. These procedures can catch cardiac problems before symptoms develop in most cases. Based on your needs, the...
Blood clots in the legs--also known as deep vein thrombosis--may have symptoms that include swelling, pain, redness or warmth in the area of the clot. This alerts doctors that you need treatment. Blood clots can break off and travel through the...
According to the Centers for Disease Control and Prevention, heart disease is the leading cause of death in both American men and women. There are many types of heart disease that include irregular heart rhythm, atrial fibrillation, congenital...
Magnesium is an essential mineral necessary for life. It plays a role in muscle contraction, enzyme function, energy production and transport and protein synthesis. You'll find magnesium in dark green, leafy vegetables, nuts, seeds, legumes, soy,...
Soy milk comes from adding water to dry, finely ground soybeans. It is dairy-free, making it a preferred food choice for people who are lactose-intolerant or vegetarian. Soy milk is naturally cholesterol-free and low in saturated fat. Drinking soy...
Electrocardiogram, often shortened to ECG or EKG, tests the electrical conduction system of the heart. The heart beats in response to electrical impulses that spread through the heart. An EKG tracing records electrical impulses on a piece of paper...
Magnesium is used often used as a medication. It is used as an antacid and to treat ailments such as constipation, magnesium deficiency, some irregular heart rhythms, and high blood pressure and protein in the urine during pregnancy. Sometimes too...
Dizziness is a symptom that can be difficult to describe and even mean different things to different people. More specific forms of dizziness include presyncopal light-headedness, vertigo, dysequilibrium and nonspecific dizziness. Presyncopal...
The heart has a total of four chambers. The atria compose the upper two top chambers and the ventricles compose the bottom two chambers. The heart's right atrium contains a small mass of cells called the sinoatrial node. It produces electrical...
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