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相关概念视频

Factors Influencing Heart Rate01:30

Factors Influencing Heart Rate

6.1K
The heart rate, or pulse rate, is a vital indicator of cardiovascular health. It reflects the number of times the heart beats per minute. Various physiological and environmental factors influence heart rate, increasing or decreasing cardiac output. Understanding these factors is crucial for assessing heart function and identifying potential health issues.
Let us explore the significant factors affecting heart rate, including age, body temperature, posture, acute pain, chemical influences,...
6.1K
Regulation of Heart Rates01:31

Regulation of Heart Rates

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The regulation of heart rate is a complex process controlled by the autonomic nervous system (ANS), hormonal influences, and intrinsic cardiac mechanisms. The ANS has two main components: the sympathetic nervous system (SNS) and the parasympathetic nervous system (PNS).
The SNS increases heart rate through the release of norepinephrine and epinephrine, which act on beta-1 adrenergic receptors in the heart. This action increases the rate of depolarization in the sinoatrial (SA) node, the heart's...
3.7K
Regulation of Pulse01:20

Regulation of Pulse

2.1K
Pulse regulation involves physiological mechanisms that ensure adequate blood flow throughout the body. The heartbeat, regulated by the autonomic nervous system, is influenced by hormonal balance, physical activity, and emotional state.
2.1K
Factors affecting Blood pressure01:28

Factors affecting Blood pressure

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Several physiological and lifestyle factors influence blood pressure (BP). Understanding these factors is crucial as they are significant in patient education and blood pressure management.
Physiological Factors:
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Increased pulse rate01:17

Increased pulse rate

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Tachycardia is a condition marked by an abnormally fast or irregular heart rate, surpassing the typical resting rate. In adults, tachycardia is characterized by a pulse rate ranging from 100 to 180 beats per minute. The increased heart rate can result in inadequate blood flow to various body parts, ultimately diminishing the oxygen supply to organs and tissues.
Many factors can elevate the risk of developing tachycardia. These include advanced age, a family history of arrhythmias, and an...
1.1K
Decreased pulse rate01:14

Decreased pulse rate

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Bradycardia is a medical condition in which the heart rate is slower than normal. It occurs when the heart's natural pacemaker, the sinus node, generates slower electrical impulses than the standard rhythm. In adults, bradycardia is diagnosed when the pulse rate falls below 60 beats per minute, indicating a deviation from the normal heart rate range.
There are specific risk factors that can elevate the likelihood of developing bradycardia. Advanced age is a significant factor, with...
831

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相关实验视频

Updated: Jan 13, 2026

Autonomic Function Following Concussion in Youth Athletes: An Exploration of Heart Rate Variability Using 24-hour Recording Methodology
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在一般日本人口中,脉冲率变化和全因死亡风险在一般日本人口中变化.

Isao Saito1, Koutatsu Maruyama2, Tadahiro Kato3

  • 1Department of Public Health and Epidemiology, Faculty of Medicine, Oita University Oita Japan.

Circulation reports
|January 12, 2026
PubMed
概括

低脉率变化 (PRV) 表明日本一般人口的死亡风险较高. 来自PRV的自主功能参数是所有原因死亡率的重要预测因素.

关键词:
死亡率 死亡率 死亡率未来的研究研究前性研究.脉冲率的变化,脉冲率的变化休息心率 休息心率 休息心率 休息心率

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Measuring the Carotid to Femoral Pulse Wave Velocity Cf-PWV to Evaluate Arterial Stiffness
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科学领域:

  • 心脏病学 心脏病学
  • 自主神经系统研究 自主神经系统研究
  • 公共卫生 公共卫生

背景情况:

  • 脉率变异性 (PRV) 被探索为评估自主功能时的心率变异性的替代品.
  • 在一般人群中,PRV衍生参数对死亡率的预测值仍然不清楚.

研究的目的:

  • 调查PRV衍生参数是否预测日本一般人口的全因死亡风险.
  • 检查自主功能标志物与死亡结果之间的关联.

主要方法:

  • 一项针对5943名日本人 (30-79岁) 的前性研究持续了12.4年.
  • 脉冲波分析使用光电脉冲扫描来评估PRV和静止心率 (RHR).
  • 用于分析与PRV参数相关的死亡风险的Cox比例危险模型和处罚立方线.

主要成果:

  • 在随访期间记录了437例死亡.
  • 正常到正常间隔 (SDNN) 标准偏差的最低四分位数显示死亡风险增加了1.51.
  • PRV参数显示了与死亡风险的显著非线性关联,即使经过对混因素和RHR进行调整.

结论:

  • 减少PRV衍生的自主性参数与所有原因死亡率的风险增加有关.
  • 在一般人群中,PRV分析为自主功能和死亡率预测提供了有价值的见解.