Heart rate: What's normal? - Mayo Clinic
Oct 8, 2022 · A normal resting heart rate for adults ranges from 60 to 100 beats per minute. Generally, a lower heart rate at rest implies more efficient heart function and better cardiovascular fitness. For example, a well-trained athlete might have a normal resting heart rate closer to 40 beats per minute.
Heart arrhythmia - Symptoms and causes - Mayo Clinic
Oct 13, 2023 · A heart arrhythmia (uh-RITH-me-uh) is an irregular heartbeat. A heart arrhythmia occurs when the electrical signals that tell the heart to beat don't work properly. The heart may beat too fast or too slow. Or the pattern of the heartbeat may be inconsistent. A heart arrhythmia may feel like a fluttering, pounding or racing heartbeat.
Fetal development: The 1st trimester - Mayo Clinic
Jun 3, 2022 · Growth is rapid this week. Just four weeks after conception, the neural tube along your baby's back is closing. The baby's brain and spinal cord will develop from the neural tube. The heart and other organs also are starting to form. Structures necessary to the formation of the eyes and ears develop. Small buds appear that will soon become arms.
Heart murmurs - Symptoms & causes - Mayo Clinic
May 27, 2022 · A heart structure problem present before birth (congenital heart defect) causes irregular blood flow between the heart chambers or blood vessels. In adults, worrisome heart murmurs are usually due to heart valve problems that develop later in life (acquired heart valve disease). Things that can damage the heart valves include: Calcium deposits.
Bradycardia - Symptoms and causes - Mayo Clinic
May 7, 2022 · Bradycardia (brad-e-KAHR-dee-uh) is a slow heart rate. The hearts of adults at rest usually beat between 60 and 100 times a minute. If you have bradycardia, your heart beats fewer than 60 times a minute. Bradycardia can be a serious problem if the heart rate is very slow and the heart can't pump enough oxygen-rich blood to the body.
How to take your pulse - Mayo Clinic
Apr 16, 2024 · A pulse is the heart rate. It's the number of times the heart beats in one minute. The pulse can be measured using the radial artery in the wrist or the carotid artery in the neck. Heart rates vary from person to person. Knowing your …
Tachycardia - Symptoms and causes - Mayo Clinic
Dec 15, 2023 · In a healthy heart, this signaling process usually goes smoothly. The resting heart rate is typically 60 to 100 beats a minute. But in tachycardia, something causes the heart to beat faster than 100 beats a minute. Risk factors. In general, things that may raise the risk of irregular heart rhythms that commonly cause tachycardia include ...
Heart palpitations - Symptoms & causes - Mayo Clinic
Mar 11, 2022 · If the heart beats rapidly, blood pressure can drop, causing the person to faint. This is more likely in those with a heart problem, such as congenital heart disease or certain valve problems. Cardiac arrest. Rarely, palpitations can be caused by life-threatening heartbeat problems and can cause the heart to stop beating effectively. Stroke.
Ventricular tachycardia - Symptoms and causes - Mayo Clinic
Mar 6, 2024 · Any heart condition that caused scarring of heart tissue, called structural heart disease. Poor blood flow to the heart muscle due to coronary artery disease. Heart problems present at birth, including long QT syndrome. Changes in levels of body minerals called electrolytes. These include potassium, sodium, calcium and magnesium.
Enlarged heart - Symptoms & causes - Mayo Clinic
May 4, 2022 · Heart failure. Heart failure may occur if the left lower heart chamber (left ventricle) becomes enlarged. In heart failure, the heart can't pump the proper amount of blood throughout the body. Blood clots. Blood clots may form in the lining of the heart. A blood clot that forms on the right side of the heart can travel to the lungs (pulmonary ...