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相关概念视频

Dysrhythmias IV: Characteristics of Bradyarrhythmias01:18

Dysrhythmias IV: Characteristics of Bradyarrhythmias

484
Bradyarrhythmias are cardiac rhythm disorders characterized by a slower-than-normal heart rate, typically defined as fewer than 60 beats per minute. Some of which are discussed here:Sinus BradycardiaSinus bradycardia presents a heart rate lower than 60 beats per minute, with a regular rhythm originating from the SA node. The ECG typically shows normal P waves preceding each QRS complex, a normal PR interval (0.12 to 0.20 seconds), and a normal QRS duration (0.06 to 0.10 seconds).First-Degree AV...
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Disturbances in Heart Rhythm01:29

Disturbances in Heart Rhythm

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Arrhythmia or dysrhythmia refers to an abnormal heart rhythm caused by a defect in the heart's conduction system. It can cause the heart to beat irregularly, too quickly, or too slowly, leading to symptoms like chest pain, shortness of breath, and fainting. Factors such as stress, caffeine, alcohol, nicotine, cocaine, certain drugs, congenital defects, diseases, and electrolyte abnormalities can trigger arrhythmias.
Arrhythmias are categorized by their speed, rhythm, and origin. A slow heart...
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Conduction System of the Heart01:20

Conduction System of the Heart

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The cardiac conduction system produces and transmits electrical impulses that prompt myocardial contraction, ensuring efficient heart function. This intricate system ensures that the heart beats in a coordinated and efficient manner, beginning with the atria and then the ventricles. The conduction system optimizes cardiac output by maintaining this precise sequence, which is crucial for adequate blood circulation.
This system relies on the unique properties of nodal and Purkinje cells:...
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Conduction System of the Heart01:19

Conduction System of the Heart

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Autorhythmicity is a term that refers to the heart's inherent ability to generate electrical signals and instigate muscle contractions. This self-regulating conduction system within the heart consists of two key components: the pacemaker cells and specialized conducting cells.
The pacemaker cells are located in two primary nodes: the sinoatrial (SA) node and the atrioventricular (AV) node. The SA node pacemaker cells can autonomously depolarize, triggering an action potential that leads to the...
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Cardiomyopathy III: Hypertrophic Cardiomyopathy01:29

Cardiomyopathy III: Hypertrophic Cardiomyopathy

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Hypertrophic cardiomyopathy, or HCM, is an autosomal dominant genetic disorder characterized by asymmetric left ventricular hypertrophy without ventricular dilation. It is more common in men and is typically diagnosed in young, athletic adults.EtiologyHCM is primarily genetic and is caused by mutations in genes encoding sarcomeric proteins. Researchers have identified over 1400 mutations across at least 11 different genes. Among these, the most frequently occurring mutations are found in the...
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Mitral Stenosis I: Introduction01:22

Mitral Stenosis I: Introduction

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Mitral Valve Stenosis (MVS) is a heart condition where the mitral valve narrows, impeding blood circulation from the left atrium to the left ventricle. The etiology and pathophysiology of this condition are multifaceted, leading to a cascade of cardiovascular complications.Causes of Mitral Valve StenosisRheumatic Heart Disease: It is the main cause of mitral valve stenosis, particularly in developing nations. This condition arises from rheumatic fever, an inflammatory illness resulting from...
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Implantation of Total Artificial Heart in Congenital Heart Disease
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生产性心脏阻塞是先天性的

Erick Jimenez1, Matthew Ambrose1, Bradley Clark1

  • 1Division of Pediatric Cardiology, Department of Pediatrics, University of Minnesota - Masonic Children's Hospital, 2450 Riverside Avenue S, Minneapolis, MN 55454, USA.

Clinics in perinatology
|November 13, 2025
PubMed
概括

先天性心脏阻塞 (CHB) 是一种罕见的胎儿疾病,影响心脏的电气系统. 早期诊断和多学科护理,包括新疗法,改善了受影响怀孕和新生儿的结果.

关键词:
生产性心脏阻塞是一种先天性心脏阻塞胎儿心律失常 胎儿心律失常母亲的自身抗体.新生儿狼 新生儿狼治疗心脏起器疗法

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Analysis of Congenital Heart Defects in Mouse Embryos Using Qualitative and Quantitative Histological Methods
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相关实验视频

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Fetal Mouse Cardiovascular Imaging Using a High-frequency Ultrasound 30/45MHZ System
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Analysis of Congenital Heart Defects in Mouse Embryos Using Qualitative and Quantitative Histological Methods
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科学领域:

  • 心脏病学 心脏病学
  • 孕产妇和胎儿医学 孕产妇和胎儿医学
  • 儿科电子生理学 儿科电子生理学

背景情况:

  • 先天性心脏阻塞 (CHB) 是一种罕见的胎儿心律失常,由导电系统中断引起.
  • 通常与母体自身抗体 (例如,抗Ro/SSA,抗La/SSB) 或先天性心脏缺陷有关.
  • 如果不治疗,会导致严重的胎儿发病率和死亡率.

研究的目的:

  • 提供先天性心脏阻塞 (CHB) 的全面概述.
  • 审查当前的诊断策略和新兴的治疗干预措施.
  • 突出多学科管理对于改善胎儿和新生儿结果的重要性.

主要方法:

  • 审查关于CHB病理生理学,诊断和管理的当前文献.
  • 强调胎儿心声学方面的进步,以早期检测.
  • 讨论药理 (例如,氧化,IVIG) 和干预 (心脏起器植入) 策略.

主要成果:

  • 胎儿心声学对于诊断CHB和评估心脏功能至关重要.
  • 孕产妇用氧化基因进行预防,有望预防CHB的发展或进展.
  • 多式疗法,包括皮质类固醇和IVIG,为耐火病例提供了选择.
  • 心脏起器植入是有症状的新生儿的一个可行的选择.

结论:

  • 早期和准确的CHB诊断对于及时干预至关重要.
  • 一种涉及母胎医学专家,儿科心脏病学家和电生理学家的多学科方法是必不可少的.
  • 在产前和产后管理的进步为受CHB影响的婴儿提供了更好的预后.