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相关概念视频

Cardiovascular System Abnormal Findings II: Auscultation01:25

Cardiovascular System Abnormal Findings II: Auscultation

86
Auscultation, an essential part of a heart examination, is done using a stethoscope. It provides crucial information about heart function and possible heart problems. Due to heart problems, abnormal sounds can be heard during systole or diastole. These sounds include S3 and S4 gallops, opening snaps, systolic clicks, and murmurs.
Abnormal Heart Sounds
Gallops:
86
Heart Sounds01:15

Heart Sounds

1.7K
Heart sounds are generated by the turbulence in blood flow due to the closing of heart valves. These sounds are best perceived slightly away from the valves, where the blood flow disseminates the sound.
Auscultation is the process of listening to these internal body sounds using a stethoscope. The heart produces four types of sounds, but only two—S1 and S2—can usually be heard with a stethoscope.
S1, also known as the "lub" sound, is caused by the closure of atrioventricular (A-V)...
1.7K
Assessment of the Cardiovascular System IV: Auscultation01:25

Assessment of the Cardiovascular System IV: Auscultation

174
Cardiac auscultation is a clinical skill used to assess heart function and detect abnormalities. It involves listening to heart sounds at specific anatomical locations through a stethoscope.
Normal Heart Sounds
S1 (First Heart Sound)-
S1 is made by the closure of the mitral and tricuspid valves (atrioventricular valves), marking the beginning of systole.
S2 (Second Heart Sound)-
S2 is made by the closure of the aortic and pulmonic valves (semilunar valves), marking the end of the systole.
174
Imaging Studies for Cardiovascular System II:Types of Echocardiography01:20

Imaging Studies for Cardiovascular System II:Types of Echocardiography

215
Echocardiography plays a role in assessing cardiac health and detecting heart conditions, with various types providing critical insights for diagnosis and treatment.
Types of Echocardiography
Transthoracic Echocardiography (TTE)
TTE is the most common type of echocardiogram which involves placing a transducer on the patient's chest, emitting sound waves to create heart images. TTE is invaluable for evaluating the heart's size, structure, and motion, making it particularly useful for...
215
Imaging Studies for Cardiovascular System I:Echocardiography01:17

Imaging Studies for Cardiovascular System I:Echocardiography

280
Cardiac imaging studies encompass a wide range of noninvasive and minimally invasive techniques designed to visualize the heart's structure and function in detail. One such technique is echocardiography, which uses high-frequency ultrasound waves to produce detailed images of the heart, known as echocardiograms.
Indications: Echocardiography is utilized to diagnose heart failure, valve disorders, and myocardial infarction. It also assesses cardiac structures' size, shape, and motion,...
280
Anatomy of the Heart01:27

Anatomy of the Heart

104.2K
The human heart is made up of three layers of tissue that are surrounded by the pericardium, a membrane that protects and confines the heart. The outermost layer, closest to the pericardium, is the epicardium. The pericardial cavity separates the pericardium from the epicardium. Beneath the epicardium is the myocardium, the middle layer, and the endocardium, the innermost layer. There are four chambers of the heart: the right atrium, the right ventricle, the left atrium, and the left ventricle.
104.2K

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相关实验视频

Updated: May 24, 2025

Echocardiographic Approaches and Protocols for Comprehensive Phenotypic Characterization of Valvular Heart Disease in Mice
12:12

Echocardiographic Approaches and Protocols for Comprehensive Phenotypic Characterization of Valvular Heart Disease in Mice

Published on: February 14, 2017

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用于诊断应用的心脏声分类.

Ashley FitzGerald, Taikang Ning

    Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference
    |March 5, 2025
    PubMed
    概括

    这项研究引入了一种使用信号处理和机器学习来检测心脏声的新方法. 该算法获得了0.87的高F分数,改善了诊断能力.

    科学领域:

    • 生物医学工程 生物医学工程
    • 计算医学是一种计算医学.
    • 信号处理 信号处理

    背景情况:

    • 心脏需要准确的检测和分类来进行诊断.
    • 目前的方法在描述语属性时可能缺乏精度.
    • 信号处理和机器学习方面的进步为心血管诊断提供了新的途径.

    研究的目的:

    • 用先进的信号处理和机器学习开发一种用于心脏声检测和分类的创新方法.
    • 调查临床诊断所必不可少的声特征 (音调,持续时间,配置,质量) 的分类.
    • 为了提高自动心脏声分析的准确性和效率.

    主要方法:

    • 应用信号处理技术从心脏周期数据中提取53个特征.
    • 利用机器学习,包括5个监督模型 (3个提升) 和13个投票分类器组合.
    • 通过使用混矩阵进行特征提取和模型效率的算法性能评估.

    主要成果:

    • 开发的声检测算法实现了0.87.7的显著F-分数.
    • 证明了拟议的特征提取方法的有效性.
    • 验证了各种机器学习模型在分类心脏声方面的表现.

    更多相关视频

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    Noninvasive Determination of Vortex Formation Time Using Transesophageal Echocardiography During Cardiac Surgery
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    Last Updated: May 24, 2025

    Echocardiographic Approaches and Protocols for Comprehensive Phenotypic Characterization of Valvular Heart Disease in Mice
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    Murine Echocardiography of Left Atrium, Aorta, and Pulmonary Artery
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    Murine Echocardiography of Left Atrium, Aorta, and Pulmonary Artery

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    Noninvasive Determination of Vortex Formation Time Using Transesophageal Echocardiography During Cardiac Surgery
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    Noninvasive Determination of Vortex Formation Time Using Transesophageal Echocardiography During Cardiac Surgery

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    结论:

    • 这种创新方法对准确的心脏声检测和分类充满希望.
    • 信号处理和机器学习集成可以显著改善心脏病的诊断工具.
    • 进一步的研究可以完善这些技术,使其具有更广泛的临床应用.