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相关概念视频

Disturbances in Heart Rhythm01:28

Disturbances in Heart Rhythm

947
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...
947
Mechanism of Cardiac Arrhythmias01:28

Mechanism of Cardiac Arrhythmias

918
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.
918
ECG Interpretation of Arrhythmias I: Sinus Arrhythmias01:16

ECG Interpretation of Arrhythmias I: Sinus Arrhythmias

213
Arrhythmias are disturbances in the heart's rhythm that lead to abnormal heartbeats. These irregularities can originate from different parts of the heart and are classified based on their origin and nature.
Types of Arrhythmias
Sinus Node Arrhythmias
Sinus Bradycardia: Originating from the sinoatrial (SA) node, sinus bradycardia involves slower impulses, resulting in a heart rate of less than 60 beats per minute (bpm). Causes include sleep, vagal stimulation, beta-blockers, hypothyroidism,...
213

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相关实验视频

Updated: Jun 28, 2025

A Middle Cerebral Artery Occlusion Technique for Inducing Post-stroke Depression in Rats
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脑卒中后心律失常可能是脑卒中后抑郁症的潜在预测因素.

Tao Xu1, Fangying Dong1,2, Muhua Zhang1

  • 1Department of Cardiology, The Fourth Affiliated Hospital, Zhejiang University School of Medicine, Shangcheng Avenue N1#, Yiwu, Zhejiang, China.

Scientific reports
|April 20, 2024
PubMed
概括

脑卒中后心律失常,特别是新发现的或有症状的类型,可能预测脑卒中后抑郁症 (PSD). 控制心律不整可以降低PSD的患病率和严重程度.

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科学领域:

  • 神经学 神经学
  • 心脏病学 心脏病学
  • 精神病学是一个精神病学.

背景情况:

  • 脑卒中后抑郁症 (PSD) 源于影响认知,情绪和自主功能的复杂因素.
  • 脑卒中后心律不整,一种常见的脑卒中心脏综合征,与PSD有潜在的致病联系.
  • 连接这些条件的确切机制尚不清楚.

研究的目的:

  • 调查中风后心律失常是否可以作为PSD的早期指标.
  • 确定不同类型的中风后心律失常和PSD之间的关联.
  • 探索心律失常控制对PSD的影响.

主要方法:

  • 包括有史以来首次缺血性中风的患者.
  • 记录了心律失常的存在,症状和治疗.
  • 患者在3个月的随访期间使用汉密尔顿抑郁量表 (HAMD) 评估了PSD和心律失常的严重程度.
  • 后勤回归确定了PSD的预测因素.

主要成果:

  • 在PSD患者中观察到更高的中风后心律失常率,特别是新发现的,症状和控制不良的类型.
  • 在PSD组中,心律失常患者的HAMD得分更高.
  • 新发现的,有症状的和控制不良的心律失常是PSD的独立预测因素.

结论:

  • 新发现的症状性中风后心律不整可能是PSD的早期预测因素.
  • 脑卒中后心律失常的有效管理与PSD的发病率和严重程度的降低有关.