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.
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.
Blood pressure chart: What your reading means - Mayo Clinic
2024年2月28日 · A blood pressure measurement over 180/120 mm Hg is called a hypertensive emergency or crisis. Seek emergency medical help for anyone with these blood pressure numbers.
Mayo Clinic corrected QT interval (QTc) calculator - Medical ...
Worried about QT interval prolongation? This online evidence based resource will help guide you how to measure the QT interval and calculate the QTc value with an easy to use calculator which takes into account the patients underlying rhythm, gender and age.
Tachycardia - Symptoms and causes - Mayo Clinic
2023年12月15日 · Jeff Olsen: This is a normal heartbeat. [HEART BEATING] Atrial fibrillation interrupts this regular beat. Fred Kusumoto, M.D., Cardiology, Mayo Clinic: In atrial fibrillation, instead of the atria squeezing in a normal regular fashion, the atria beat irregularly and chaotically.
Calorie calculator - Mayo Clinic
If you're pregnant or breast-feeding, are a competitive athlete, or have a metabolic disease, such as diabetes, the calorie calculator may overestimate or underestimate your actual calorie needs.
Atrial fibrillation - Symptoms and causes - Mayo Clinic
2024年3月8日 · Atrial fibrillation (AFib) is an irregular and often very rapid heart rhythm. An irregular heart rhythm is called an arrhythmia.
Pulse pressure: An indicator of heart health? - Mayo Clinic
2023年8月18日 · The top number minus the bottom number is the pulse pressure. So if the resting blood pressure is 120/80 mm Hg, the pulse pressure is 40.
Low blood pressure (hypotension) - Symptoms and causes
2024年6月13日 · Symptoms. Low blood pressure symptoms can include: Blurred or fading vision. Dizzy or lightheaded feelings. ...
心率：什么情况才算正常？ - 妙佑医疗国际 - Mayo Clinic
2022年10月8日 · 尽管心率有广泛的正常范围，但异常高或异常低的心率可能提示有基础疾病。如果您的静息心率持续高于 100 次/分钟（心动过速）或您不是受训运动员而静息心率低于 60 次/分钟（心动过缓），尤其是如果您还伴有昏厥、头晕或呼吸短促等其他体征或症状，请向医生咨询。