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Related Concept Videos

Cross-bridge Cycle01:26

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As muscle contracts, the overlap between the thin and thick filaments increases, decreasing the length of the sarcomere—the contractile unit of the muscle—using energy in the form of ATP. At the molecular level, this is a cyclic, multistep process that involves binding and hydrolysis of ATP, and movement of actin by myosin.
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Design Example: Strain Gauge Bridge or Wheatstone Bridge01:15

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The utilization of strain gauges as transducers for converting mechanical strain into electrical signals is a common practice in various engineering applications. These strain gauges are frequently integrated into Wheatstone bridge circuits to accurately measure parameters such as force or pressure. Within this context, each element within the circuit exhibits a resistance that undergoes subtle variations when subjected to mechanical strain. The primary objective is to convert minuscule...
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Wheatstone Bridge01:29

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An ohmmeter is a resistance-measuring device. It works by applying a voltage to a resistor of unknown resistance and measuring the current across the resistor. The resistance value is deduced using Ohm's law. Usually, the standard configuration of an ohmmeter comprises a voltmeter or an ammeter. However, such configurations are limited in accuracy because the meters alter the voltage applied to the resistor and the current that flows through it.
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Bridge rectifier01:24

Bridge rectifier

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The bridge rectifier is essential in electronics for efficiently converting alternating current (AC) to direct current (DC). Comprised of four diodes configured in a bridge layout, this rectifier effectively processes both the positive and negative halves of the AC waveform, making it superior to half-wave and full-wave center-tapped rectifiers in terms of voltage regulation and output stability.
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Diels–Alder Reaction Forming Bridged Bicyclic Products: Stereochemistry01:29

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Diels–Alder reactions between cyclic dienes locked in an s-cis configuration and dienophiles yield bridged bicyclic products.
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Spontaneous Chemical Reactions
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Related Experiment Video

Updated: Feb 15, 2026

Fabrication of Small Caliber Stent-grafts Using Electrospinning and Balloon Expandable Bare Metal Stents
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Myocardial bridge, surgery or stenting?

Li Wan1, Qingyu Wu

  • 1Department of Cardiovascular Surgery, Cardiovascular Institute, Fu Wai Hospital, Chinese Academy of Medical Science, Peking Union Medical College, 167 Bei Li Shi Road, Fuchengmenwai, Beijing, China. wlzh7580@yahoo.com.cn

Interactive Cardiovascular and Thoracic Surgery
|August 3, 2007
PubMed
Summary
This summary is machine-generated.

Surgical treatment for myocardial bridge (MB) showed excellent outcomes with no late complications. Stent implantation for MB resulted in restenosis and recurrent angina, suggesting surgery is a superior option.

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Imaging In-Stent Restenosis: An Inexpensive, Reliable, and Rapid Preclinical Model
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Area of Science:

  • Cardiology
  • Cardiovascular Surgery

Background:

  • Myocardial bridge (MB) is a congenital heart anomaly where a segment of a coronary artery travels through the heart muscle.
  • Surgical and interventional treatment options for symptomatic MB have evolved, necessitating a review of clinical outcomes.

Purpose of the Study:

  • To compare the clinical experience and long-term outcomes of surgical treatment versus stent implantation for myocardial bridge.
  • To evaluate the efficacy and safety of different treatment modalities for MB.

Main Methods:

  • A retrospective review of 15 patients who underwent surgical treatment (coronary artery bypass grafting or myotomy) for MB.
  • Analysis of 4 patients who received stent implantation for MB.
  • Follow-up assessment of clinical outcomes, including mortality, readmission, and angina recurrence.

Main Results:

  • All surgical patients survived and recovered uneventfully, with no late deaths, readmissions, or angina.
  • Stent implantation patients had excellent initial angiographic results, but two experienced angina recurrence due to intimal proliferation and systolic compression.
  • Surgical treatment demonstrated excellent early and late results.

Conclusions:

  • Surgical intervention for myocardial bridge offers superior long-term outcomes compared to stent implantation.
  • Myotomy and coronary artery bypass grafting are effective and safe surgical options for managing symptomatic myocardial bridge.