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Related Concept Videos

Design Consideration01:22

Design Consideration

586
Designing a structure involves a series of considerations, primarily the material's ultimate strength, calculated through tests that measure changes under increased force until the material reaches its breaking point or limit. The ultimate load, where the material breaks, is divided by its original cross-sectional area, resulting in the ultimate normal stress or strength. The ultimate shearing stress is another significant factor taken into account.
The factor of safety is another key...
586
Tensile Strength Considerations of Concrete01:16

Tensile Strength Considerations of Concrete

561
Considering the tensile strength of concrete involves recognizing that the theoretical strength of cement paste can be up to a thousand times higher than what is observed in practical applications. This significant discrepancy is largely attributed to the presence of microscopic cracks within the concrete. These cracks tend to amplify stress at their tips when a load is applied, a phenomenon explained by Griffith's theory of brittle fracture.
The dimensions and shape of a concrete specimen...
561
Transmission Line Design Considerations01:23

Transmission Line Design Considerations

634
Aluminum has become the material of choice for overhead transmission lines, surpassing copper due to its abundance and cost-effectiveness. The most prevalent type is the aluminum conductor, steel-reinforced (ACSR), which combines aluminum strands around a steel core. Other variants include all-aluminum conductors (AAC), all-aluminum alloy conductors (AAAC), aluminum conductor alloy-reinforced (ACAR), and aluminum-clad steel conductors. Advanced designs, such as aluminum conductors with steel...
634
Special considerations while measuring pulse01:13

Special considerations while measuring pulse

986
Assessing a patient's pulse is a fundamental skill in healthcare, but certain situations require special attention:
986
Energy Considerations in Open Channel Flow01:27

Energy Considerations in Open Channel Flow

620
Open channel flow, where a fluid flows with a free surface exposed to the atmosphere, is primarily governed by gravitational and surface effects, distinguishing it from closed conduit or pipe flow. In open channels such as rivers, canals, and artificial channels, energy analysis provides valuable insights into flow behavior and the relationship between depth, velocity, and slope.Specific Energy and Flow DepthIn open channel flow, the specific energy, E, combines the gravitational potential...
620
One-Compartment Open Model for IV Bolus Administration: General Considerations01:19

One-Compartment Open Model for IV Bolus Administration: General Considerations

763
The one-compartment model is a pharmacokinetic tool that models the body as a single, uniform compartment, facilitating the understanding of drug distribution and elimination. This model is particularly beneficial for intravenous (IV) bolus administration, where the drug rapidly circulates throughout the body.
The drug's presence in the body is defined by an equation representing the difference between the rates of drug entry and exit. Key parameters—elimination rate constant,...
763

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Related Experiment Video

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Author Spotlight: Recent Advancements in Reoperative Foregut Surgery
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The Amplatzer Amulet Device: Technical Considerations and Procedural Approach.

Nathan Messas1, Reda Ibrahim2

  • 1Department of Medicine, Montreal Heart Institute, Université de Montréal, 5000 Belanger Street, Montreal, Québec H1T 1C8, Canada; Department of Cardiology, University hospital of Strasbourg, 1 place de l'hopital, Strasbourg 67000, France.

Interventional Cardiology Clinics
|March 13, 2018
PubMed
Summary

Percutaneous left atrial appendage occlusion (LAAO) offers a safe stroke prevention alternative for atrial fibrillation patients unsuitable for anticoagulation. This review details the AMPLATZER Amulet device and its implantation technique.

Keywords:
AMPLATZER AmuletChicken wing anatomyLeft atrial appendage occlusionNonvalvular atrial fibrillationTransseptal puncture

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Area of Science:

  • Cardiology
  • Medical Devices
  • Interventional Procedures

Background:

  • Left atrial appendage occlusion (LAAO) has advanced significantly over the past 20 years for stroke prevention in atrial fibrillation.
  • LAAO is a viable and safe alternative to oral anticoagulants for patients at high risk of bleeding or ineligible for anticoagulation therapy.

Purpose of the Study:

  • To review the design features of the AMPLATZER Amulet device.
  • To provide a step-by-step guide for the technical considerations of AMPLATZER Amulet LAAO device implantation.

Main Methods:

  • Review of device design specifications.
  • Description of implantation technique based on clinical experience and literature.

Main Results:

  • The AMPLATZER Amulet device is presented with its key design elements.
  • Detailed procedural steps for successful implantation are outlined.

Conclusions:

  • The AMPLATZER Amulet device is a key option for LAAO in stroke prevention.
  • Understanding device features and implantation technique is crucial for successful patient outcomes.