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相关概念视频

Esophagus01:24

Esophagus

3.7K
The esophagus, a muscular conduit linking the pharynx and stomach, measures roughly 10 inches (25.4 cm) and sits behind the trachea. It remains collapsed when not swallowing. The esophagus follows a predominantly straight path through the thoracic mediastinum and enters the abdominal cavity through a diaphragmatic opening known as the esophageal hiatus.
The movement of edibles from the pharynx into the esophagus is facilitated by the upper esophageal sphincter, which is formed primarily by the...
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Gastric Motility01:16

Gastric Motility

2.8K
Gastric motility is the coordinated contraction and relaxation of stomach muscles that convert ingested food into chyme, a semi-liquid substance ready for further digestion in the intestines. The process begins with the vagus nerve inducing the relaxation of the smooth muscles in the fundus and body of the stomach, allowing these regions to expand and accommodate up to approximately 1.5 liters of food and liquid.
Peristaltic Waves and Chyme Formation
Upon food entry, the stomach initiates...
2.8K
Gravitational Potential Energy for Extended Objects01:07

Gravitational Potential Energy for Extended Objects

1.9K
Consider a system comprising several point masses. The coordinates of the center of mass for this system can be expressed as the summation of the product of each mass and its position vector divided by the total mass:
1.9K
Esophageal Strictures-I: Introduction01:30

Esophageal Strictures-I: Introduction

651
Esophageal strictures involve abnormal narrowing or tightening of the esophagus. They vary in length and severity, ranging from mild constriction to complete obstruction, and are classified as benign (noncancerous) or malignant (cancerous).
Etiology
The primary cause of esophageal strictures is long-standing gastroesophageal reflux disease (GERD), accounting for about 70 to 80% of adult cases. Chronic acid reflux can lead to injury and scarring of the esophageal lining, culminating in...
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Esophageal Varices-I: Introduction01:24

Esophageal Varices-I: Introduction

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Esophageal varices are dilated, tortuous veins which are found mainly in the submucosa of the lower esophagus but which may also appear higher up or extend into the stomach. They develop due to increased pressure in the portal venous system, often as a result of liver cirrhosis. This condition scars and damages the liver, impeding normal blood flow through the portal vein. To compensate, blood seeks alternative pathways, forming fragile new vessels (varices) in the esophagus and stomach. These...
1.2K
Smooth Muscle Contraction01:25

Smooth Muscle Contraction

7.3K
Smooth muscle contraction is a complex process vital for various bodily functions, from maintaining blood vessel tension to facilitating the movement of food through the digestive tract. Unlike striated muscles, smooth muscle contraction begins more slowly and lasts longer.
The onset of contraction is triggered by an increase in calcium ions within the sarcoplasm, similar to the process in striated muscle. However, smooth muscles have a relatively smaller reservoir of the sarcoplasmic...
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相关实验视频

Updated: Jan 18, 2026

An Ivor Lewis Esophagectomy Designed to Minimize Anastomotic Complications and Optimize Conduit Function
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An Ivor Lewis Esophagectomy Designed to Minimize Anastomotic Complications and Optimize Conduit Function

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简化了食管胃节收缩积分计算.

Arianna Vittori1,2, Andrés R Latorre-Rodríguez1,3, Sumeet K Mittal4,5

  • 1Norton Thoracic Institute, St. Joseph's Hospital and Medical Center, 500 W Thomas Road, Suite 500, Phoenix, AZ, 85013, USA.

Indian journal of gastroenterology : official journal of the Indian Society of Gastroenterology
|January 17, 2026
PubMed
概括

一个新的修改的食管胃结合收缩积分 (m-EGJ-CI) 提供了一个更简单的计算来评估EGJ功能. 这种修改后的指标与原来的EGJ-CI保持一致,同时大大缩短了计算时间.

关键词:
消化道和胃口的结合点胃食道逆流疾病是胃食道逆流疾病.下部食道关节的下部食道关节

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Author Spotlight: Cutting-Edge Robotic Heller Myotomy Protocol for Treatment of Achalasia
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Author Spotlight: Cutting-Edge Robotic Heller Myotomy Protocol for Treatment of Achalasia

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The Mechanics of Poro-Elastic Contractile Actomyosin Networks As a Model System of the Cell Cytoskeleton
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相关实验视频

Last Updated: Jan 18, 2026

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Author Spotlight: Cutting-Edge Robotic Heller Myotomy Protocol for Treatment of Achalasia
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科学领域:

  • 胃肠病学 胃肠病学
  • 消化系统生理学 消化系统生理学
  • 医学诊断 医学诊断 医学诊断

背景情况:

  • 消化管胃结合收缩积分 (EGJ-CI) 是评估EGJ功能的关键测量参数.
  • 目前的EGJ-CI计算是一个复杂的,多步骤的手动过程.
  • 下消化管关节压力积分 (LESPI) 是一个类似但更简单的度量.

研究的目的:

  • 为了引入一种新的,简化的指标:修改后的EGJ-CI (m-EGJ-CI).
  • 将m-EGJ-CI的准确性和效率与已建立的EGJ-CI进行比较.

主要方法:

  • 一项横截面研究分析了84名患者的高分辨率测量数据.
  • 排除标准包括先前的前肠外科手术和特定的食道运动障碍.
  • 经验丰富的口译员计算了EGJ-CI和m-EGJ-CI;评估了相关性和时间.

主要成果:

  • 在EGJ-CI和m-EGJ-CI之间观察到强烈的正相关性 (ρ = 0.839).
  • 与EGJ-CI.相比,m-EGJ-CI计算时间显著减少 (15.7分 vs 60.3分)
  • 结果表明m-EGJ-CI是一种可靠且更快的替代方案.

结论:

  • 标准EGJ-CI计算过于复杂和耗时.
  • m-EGJ-CI提供了与EGJ-CI可比的结果,效率提高.
  • m-EGJ-CI有可能在未来的计量软件中实现自动化.