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相关概念视频

Pulse rhythm01:30

Pulse rhythm

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Pulse rhythm refers to the pattern of pulsations within specific intervals, offering valuable insights into the regularity or irregularity of the heart's beats as observed through the pattern of pulsation within specific intervals. A regular pulse exhibits a consistent heart rate with uniform waveforms and pulsation force, variations of which can be classified as normal, weak, or bounding.
Conversely, an irregular pulse pattern is termed dysrhythmia, stemming from disruptions in cardiac...
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Dysrhythmias II: Classification of Tachyarrhythmias01:28

Dysrhythmias II: Classification of Tachyarrhythmias

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Tachyarrhythmias are a type of dysrhythmia where the heart rate exceeds 100 beats per minute. Here are some common types of tachyarrhythmias:Sinus TachycardiaSinus tachycardia originates from increased impulses from the sinus node, leading to an elevated heart rate. It is often triggered by stress, fever, or exercise.Patients may experience palpitations, a sensation of a racing heart, dizziness, and chest discomfort.Causes and Risk Factors: Common causes include physical exertion, emotional...
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Special considerations while measuring pulse01:13

Special considerations while measuring pulse

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Assessing a patient's pulse is a fundamental skill in healthcare, but certain situations require special attention:
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Electrophysiology of Normal Cardiac Rhythm01:19

Electrophysiology of Normal Cardiac Rhythm

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The normal cardiac rhythm is a synchronized electrical activity that facilitates the regular and coordinated contraction of the heart muscle. This process is essential for efficient blood circulation throughout the body. The fundamental elements involved in establishing and maintaining this rhythm include the unique electrical properties of cardiac muscle cells, the sinoatrial (SA) node's pacemaker function, the specialized conducting system, and the ionic mechanisms underlying each phase...
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Assessment of apical pulse01:17

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Assessing the Apical Pulse
Assessing the apical pulse is a critical nursing procedure, particularly indicated for:
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Cardiac Action Potential01:30

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Cardiac action potentials are essential for proper heart function, enabling the rhythmic contractions needed for adequate blood circulation. Nodal cells and Purkinje fibers, specialized for electrical conduction, generate these action potentials.
The cardiac action potential process involves a series of phases characterized by the movement of ions across the cardiac cell membranes, leading to the depolarization and repolarization of the cardiac myocytes.
Ionic Basis of Cardiac Action Potentials
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相关实验视频

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通过使用深度卷积神经网络进行增强的过早心室收缩脉冲检测和分类.

Remya Raj1, Ushus S Kumar2, Vivek Maik3

  • 1Department of Biomedical Engineering, SRM Institute of Science and Technology, Ramapuram, Chennai, India. remyar1@srmist.edu.in.

Physical and engineering sciences in medicine
|September 18, 2023
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概括

这项研究引入了一个深度卷积神经网络 (CNN) 用于检测胎儿心律不整,使用光透视图 (PPG) 和动脉血压 (ABP) 信号. 这种新方法在分类早发性心室收缩 (PMVCs) 方面取得了高准确性.

关键词:
动脉血压 (ABP) 是指动脉中的血压.卷积神经网络 (CNN) 是一种神经网络.低级别优化优化 低级别优化摄影电磁镜 (PPG) 是一种摄影电磁镜.过早的心室收缩 (PMVC)波段变换的波段变换是什么

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Real-Time Cardiac Mapping with a Noninvasive Imageless Electrocardiographic Imaging System
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Efficient Derivation of Human Cardiac Precursors and Cardiomyocytes from Pluripotent Human Embryonic Stem Cells with Small Molecule Induction
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科学领域:

  • 生物医学工程 生物医学工程
  • 心脏病学 心脏病学
  • 人工智能在医学中的应用

背景情况:

  • 准确的监测系统对于预防心脏疾病至关重要.
  • 胎儿心律不整,特别是早发性心室收缩 (PMVCs),需要精确的检测方法.

研究的目的:

  • 开发和评估一个深度卷积神经网络 (CNN) 用于分类胎儿心律不整 (PMVCs).
  • 为了提高检测准确度,利用光聚缩学 (PPG) 和动脉血压 (ABP) 信号.

主要方法:

  • 使用了一个深度卷积神经网络 (CNN) 架构.
  • 使用转移学习,使用来自Icentia 11k心电图数据集的权重.
  • 通过使用PPG和ABP数据,CNN进行了微调,以改进PMVC的分类.

主要成果:

  • 拟议的CNN方法在检测和分类PMVC方面表现出高准确度.
  • 对于PMVC的正常,P1和P2类型的分类准确度分别达到99.9%,99.8%和99.5%.

结论:

  • 开发的CNN框架有效地检测和分类胎儿心律不整 (PMVCs).
  • 将PPG和ABP信号与CNN集成为非侵入性胎儿心脏监测提供了一个有希望的方法.