Heart rate: What's normal? - Mayo Clinic
2022年10月8日 · 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.
Tachycardia - Symptoms and causes - Mayo Clinic
2023年12月15日 · 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 arrhythmia - Symptoms and causes - Mayo Clinic
2023年10月13日 · In general, heart arrhythmias are grouped by the speed of the heart rate. For example: Tachycardia (tak-ih-KAHR-dee-uh) is a fast heartbeat. The heart rate is greater than 100 beats a minute. Bradycardia (brad-e-KAHR-dee-uh) is a slow heartbeat. The heart rate is less than 60 beats a minute. Fast heartbeat, called tachycardia
Mayo Clinic Minute: How to hit your target heart rate
2019年8月6日 · "Well, we want that target heart rate range. And that means we're working hard enough that our heart is getting beneficial activity and beneficial exercise." Dr. Ed Laskowski, co-director of Mayo Clinic Sports Medicine, says you should get about 30 minutes of moderate activity at least five days a week.
Exercise intensity: How to measure it - Mayo Clinic
2023年8月25日 · The maximum heart rate is 176.5. Next, check your resting heart rate first thing in the morning. Say it's 80 beats per minute. Calculate your HRR by subtracting 80 from 176.5. Your HRR is 96.5. Multiply 96.5 by 0.7 (70%) to get 67.5, then add your resting heart rate of 80 to get 147.5. This is your target heart rate at 70% intensity.
Bradycardia - Symptoms and causes - Mayo Clinic
2024年12月13日 · 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.
Blood pressure chart: What your reading means - Mayo Clinic
2024年2月28日 · †These recommendations address high blood pressure as a single health condition. If you also have heart disease, diabetes, chronic kidney disease or certain other conditions, you may need to treat your blood pressure more aggressively. Below 120: and: Below 80: Normal blood pressure: Maintain or adopt a healthy lifestyle. 120 to 129: and ...
Ejection fraction: An important heart test - Mayo Clinic
2023年2月17日 · The heart contracts and relaxes. When the heart contracts, it pumps out — ejects — blood from the two lower heart chambers, called ventricles. When the heart relaxes, the ventricles refill with blood. No matter how forceful the contraction, the heart can never pump all the blood out of a ventricle.
Supraventricular tachycardia - Symptoms and causes - Mayo Clinic
2024年3月7日 · In a healthy heart, this heart signaling process usually goes smoothly. The heart usually beats about 60 to 100 times a minute at rest. But in SVT, the heart beats faster than 100 beats a minute. The heart may beat 150 to 220 times a minute. Risk factors
Ventricular tachycardia - Symptoms and causes - Mayo Clinic
2024年3月6日 · In a healthy heart, this heart signaling process usually goes smoothly, resulting in a resting heart rate of 60 to 100 beats a minute. But some things can change how electrical signals travel through the heart. In ventricular tachycardia, faulty electrical signaling in the heart's lower chambers make the heart beat100 or more times a minute.