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相关概念视频

Mechanism of Cardiac Arrhythmias01:28

Mechanism of Cardiac Arrhythmias

909
Arrhythmias are irregular heart rhythms occurring when the heart's electrical impulses become abnormal. These disturbances can lead to various symptoms, depending on their severity and the underlying cause. Some common factors contributing to arrhythmias include hypoxia, ischemia, electrolyte imbalances, excessive catecholamine exposure, drug toxicity, and muscle overstretching. Arrhythmias can be classified into two main types based on the rate and site of origin of abnormal heart rhythms.
909
Disturbances in Heart Rhythm01:28

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...
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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...
3.0K
Cardiac Action Potential01:30

Cardiac Action Potential

1.3K
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

Updated: Jun 21, 2025

Translational Rabbit Model of Chronic Cardiac Pacing
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皮下心脏起器导致心脏窒息

Scott Kendall1,2, Rihab Agouba1, Andrew Sands1

  • 1Paediatric Cardiology Department, Royal Belfast Hospital for Sick Children, Belfast, Northern Ireland, United Kingdom.

Journal of the Saudi Heart Association
|July 16, 2024
PubMed
概括

心脏窒息是一种罕见的并发症心脏表皮节拍器. 这一案例凸显了在患有先天性完全心脏阻塞的儿童中认识到这种潜在致命问题的重要性.

关键词:
这是心脏杀.遗传性心脏病是一种先天性心脏病.起器是一种心脏起器.

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Benefits of Cardiac Resynchronization Therapy in an Asynchronous Heart Failure Model Induced by Left Bundle Branch Ablation and Rapid Pacing
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Sterile Pericarditis in Aachener Minipigs As a Model for Atrial Myopathy and Atrial Fibrillation
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相关实验视频

Last Updated: Jun 21, 2025

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Benefits of Cardiac Resynchronization Therapy in an Asynchronous Heart Failure Model Induced by Left Bundle Branch Ablation and Rapid Pacing
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科学领域:

  • 儿童心脏病学 儿童心脏病学
  • 心脏电生理学 心脏电生理学
  • 医疗器械并发症 医疗器械并发症

背景情况:

  • 副心脏起器用于管理先天性完全心脏阻塞 (CCHB).
  • 心脏窒息是一种罕见但严重的并发症,与这些设备相关.
  • 早期检测和管理对于患者的结果至关重要.

研究的目的:

  • 报告患有CCHB的儿科病人的心脏窒息病例.
  • 讨论心脏起器诱导的心脏窒息的临床表现和风险因素.
  • 强调警跟踪心上节拍器并发症的重要性.

主要方法:

  • 一个9岁女孩患有CCHB的案例报告.
  • 对临床表现和诊断发现的审查.
  • 讨论风险因素和潜在的管理策略.

主要成果:

  • 在常规随访时发现了心脏杀,这是在心脏表皮节拍器的随访期间发现的.
  • 该患者在生命的第1天曾经为CCHB插入心上节律起动器.
  • 这一案例强调了这种并发症延迟呈现的可能性.

结论:

  • 心脏窒息是上心脏起器插入的一个关键并发症.
  • 了解临床症状和风险因素对于及时诊断至关重要.
  • 常规监测对于识别患有心脏起器的儿科患者并发症至关重要.