区域性心肌功能在异常异常性高性下动脉狭窄症中. 一个心声回声学研究研究
Circulation
|November 1, 1975
概括
异常性缩性下大风狭窄症 (IHSS) 显示隔膜收缩速度降低,但后壁收缩速度增加,表明尽管整体超动态收缩,但心室功能不对称.
科学领域:
- 心脏病学 心脏病学
- 心血管生理学心血管生理学
- 医疗成像医学成像
背景情况:
- 异常性缩性下大动脉狭窄症 (IHSS) 是一种主要的肌痛性疾病.
- IHSS的特点是高动力心室收缩.
- 在IHSS中区域收缩性模式需要进一步调查.
研究的目的:
- 通过测量缩壁的厚度和收缩速度来评估IHSS中的区域收缩性.
- 将IHSS患者的隔膜和后壁功能与正常患者进行比较.
主要方法:
- 声心成像被用来测量缩壁的厚度和收缩速度.
- 这项研究包括16名IHSS患者和16名正常患者.
- 对隔膜和左心室后壁进行了测量.
主要成果:
- 与IHSS后壁和正常隔膜相比,IHSS隔膜的厚度显著减少.
- 在IHSS中,隔膜收缩速度明显低于正常受试者和IHSS后壁.
- IHSS后壁的收缩速度比正常心室的收缩速度更快,这表明它具有补偿功能.
结论:
- IHSS显示功能左心室不对称,具有低动力隔膜和高动力后壁.
- 区域收缩性在IHSS中不均,尽管整体高动力心室功能.
- 这些发现支持将IHSS归类为不对称肌肉病变.
相关概念视频
01:19Electrophysiology of Normal Cardiac Rhythm
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 of...
01:26Imbalances in Cardiac Output
The heart's primary function is to pump blood throughout the body, maintaining a balance between blood sent out (cardiac output) and blood returning (venous return). If this balance is disrupted, it can result in congestive heart failure (CHF), a severe condition where the heart becomes an inefficient pump, leading to inadequate blood circulation.
CHF can occur due to the failure of either side of the heart. Left-side failure leads to pulmonary congestion—the right side continues to send blood...
CHF can occur due to the failure of either side of the heart. Left-side failure leads to pulmonary congestion—the right side continues to send blood...
01:25Assessment of the Cardiovascular System IV: Auscultation
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.
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.
01:29Cardiovascular System Abnormal Findings I: Inspection and Palpation
In a cardiovascular examination, inspection and palpation are crucial for identifying abnormalities.
Abnormal findings observed during an inspection
Abnormal findings observed during an inspection
01:25Cardiovascular System Abnormal Findings II: Auscultation
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:
Abnormal Heart Sounds
Gallops:
01:29Heart Failure II: Pathophysiology
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