通过自发和受控呼吸期间的滞后关节象征动态来评估心肺呼吸相互作用
Beatrice Cairo1, Vlasta Bari1,2, Francesca Gelpi1
1Department of Biomedical Sciences for Health, University of Milan, Milan, Italy.
Frontiers in network physiology
|August 21, 2023
概括
滞后关节符号分析 (LJSA) 揭示了心肺呼吸系统合 (CRC) 的动态. 这种方法有效地评估心脏周期 (HP) 和呼吸 (R) 之间的相互作用,跨越不同的时间尺度和呼吸条件.
科学领域:
- 生理学 生理学 生理学
- 非线性动力学是一种非线性动力学.
- 生物医学信号处理
背景情况:
- 联合符号分析 (JSA) 描述时间序列相互作用,考虑时间尺度和非线性.
- 滞后的JSA (LJSA) 扩展了JSA,将时间延迟/领先时间结合起来,以分析不同滞后的序列之间的协调模式.
- 心血管呼吸器合 (CRC) 涉及心脏周期 (HP) 变化和呼吸活动 (R) 之间的复杂相互作用.
研究的目的:
- 在自发和受控呼吸条件下,在健康受试者中评估心肺呼吸系统合 (CRC) 的LJSA应用.
- 评估LJSA使用随机过程和替代数据检测合强度变化的能力.
- 为了研究不同呼吸速率对HP-R相互作用的影响.
主要方法:
- 延迟关节符号分析 (LJSA) 应用于19名健康受试者的心脏周期 (HP) 和呼吸系统 (R) 数据.
- 在自发呼吸 (SB) 和控制呼吸 (CB) 期间收集数据,每分钟呼吸15次 (CB15) 和每分钟呼吸10次 (CB10).
- 验证LJSA使用单向/双向合的随机过程和替代数据来测试显著合.
主要成果:
- 替代数据分析证实了所有条件的显著HP-R合,没有首选的时间延迟.
- 在10次呼吸/分钟 (CB10) 的控制呼吸下降了快速时间尺度上的合,并在中间尺度上增加了它,保持了整体CRC强度.
- 自发呼吸 (SB) 和以每分钟15次呼吸的控制呼吸 (CB15) 诱导了不同的心肺呼吸相互作用,尽管呼吸速率相似.
结论:
- LJSA是探索动态HP-R相互作用的宝贵工具,有效地考虑时间转移和不同的时间尺度.
- 呼吸速率显著调节了不同时间分辨率的心肺呼吸合动态.
- 在各种生理条件下,LJSA为心脏和呼吸系统之间的复杂相互作用提供了洞察力.
更多相关视频
相关概念视频
01:29Assessment of Ventilation II: Respiratory Depth and Rhythm
1.6K
Respiratory Depth
Respiratory depth measures the volume of air inhaled or exhaled during a breath. It can vary from shallow to deep and typically remains consistent when a person is at rest or asleep. Occasionally, individuals will automatically inhale deeply, known as sighing, which inflates the lungs with more air than normal breathing.
To assess respiratory depth, observe the degree of chest excursion or movement:
Respiratory depth measures the volume of air inhaled or exhaled during a breath. It can vary from shallow to deep and typically remains consistent when a person is at rest or asleep. Occasionally, individuals will automatically inhale deeply, known as sighing, which inflates the lungs with more air than normal breathing.
To assess respiratory depth, observe the degree of chest excursion or movement:
1.6K
01:23Assessment of Respiration
1.2K
The respiratory system's basic structures and primary functions lay the foundation for nurses' comprehensive respiratory assessments. This assessment includes subjective and objective data to gauge the patient's respiratory health.
Subjective Assessment: Nurses interview the patient to gather information directly during the subjective assessment. It includes questions about the individual's medical history, medications, and symptoms, focusing on past respiratory conditions like...
Subjective Assessment: Nurses interview the patient to gather information directly during the subjective assessment. It includes questions about the individual's medical history, medications, and symptoms, focusing on past respiratory conditions like...
1.2K
01:25Correlation between ECG and Cardiac Cycle
6.8K
The electrical signals recorded on an electrocardiogram (ECG) occur before the mechanical processes of contraction and relaxation during the cardiac cycle.
A cardiac action potential originates in the SA node and spreads throughout the atria and the AV node in approximately 0.03 seconds. This results in the P wave in an ECG and triggers atrial contraction. The action potential is then briefly slowed at the AV node, allowing the atria to contract and fill the ventricles with blood before...
A cardiac action potential originates in the SA node and spreads throughout the atria and the AV node in approximately 0.03 seconds. This results in the P wave in an ECG and triggers atrial contraction. The action potential is then briefly slowed at the AV node, allowing the atria to contract and fill the ventricles with blood before...
6.8K
01:17Kinematic Equations - II
9.6K
The second kinematic equation expresses the final position of an object in terms of its initial position, the distance traveled with the initial constant velocity, and the distance traveled due to a change in velocity. Similar to the first kinematic equation, this equation is also only valid when the acceleration is constant throughout the motion of an object.
Suppose a car merges into freeway traffic on a 200 m long ramp. If its initial velocity is 10 m/s and it accelerates at 2 m/s2, then the...
Suppose a car merges into freeway traffic on a 200 m long ramp. If its initial velocity is 10 m/s and it accelerates at 2 m/s2, then the...
9.6K
01:15Kinematic Equations: Problem Solving
12.5K
When analyzing one-dimensional motion with constant acceleration, the problem-solving strategy involves identifying the known quantities and choosing the appropriate kinematic equations to solve for the unknowns. Either one or two kinematic equations are needed to solve for the unknowns, depending on the known and unknown quantities. Generally, the number of equations required is the same as the number of unknown quantities in the given example. Two-body pursuit problems always require two...
12.5K
01:10Relative Motion Analysis - Acceleration
378
A slider-crank mechanism converts rotational motion from the crank into linear motion of the slider or vice versa. This mechanism consists of three main parts: the crank, the connecting rod, and the slider. The movement of the slider-crank is an example of general plane motion as the fluctuating angle between the crank and the connecting rod. Consider a segment AB where point A is at the end of the slider and point B is on the diametrically opposite end to point A, on a crack. The variance in...
378