Layer Closure
Layer Closure - Related Videos
07:37
Neural Tube Closure in Mouse Whole Embryo Culture
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Cited by 22 •
2011
A method allowing for direct pharmacological manipulation of mouse embryos during neurulation that bypasses maternal metabolism is described. The technique can be adapted to study different aspects of neurulation by varying the time point and pharmacological agent.
23:33
The WATCHMAN Left Atrial Appendage Closure Device for Atrial Fibrillation
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Cited by 49 •
2012
The accompanying video describes a procedure for percutaneous placement of the WATCHMAN Left Atrial Appendage (LAA) Device. The WATCHMAN is a nitinol device designed to be permanently implanted at, or slightly distal to, the opening of the left atrial appendage (LAA) to trap blood clots before they exit the LAA, preventing thromboembolic stroke.
03:07
Thin-Layer Chromatography - Concepts
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2020
Chromatography Chromatography is a technique used in organic chemistry to separate compounds in a mixture based on their differences in solubility between two different phases. The concept is similar to liquid-liquid extraction, except in chromatography, the two phases consist of the stationary phase and the mobile phase. The stationary phase is a solid — typically a microscale hydrogel bead — while the mobile phase is a carrier solvent. In traditional chromatography, the stationary phase is...
28:13
Catheter Ablation in Combination With Left Atrial Appendage Closure for Atrial Fibrillation
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Cited by 11 •
2013
Catheter ablation is combined with placement of the WATCHMAN Left Atrial Appendage Closure Device to prevent ischemic stroke in a patient with non-valvular atrial fibrillation.
09:56
Layer-by-layer Collagen Deposition in Microfluidic Devices for Microtissue Stabilization
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Cited by 7 •
2015
The creation of functional microtissues within microfluidic devices requires the stabilization of cell phenotypes by adapting traditional cell culture techniques to the limited spatial dimensions in microdevices. Modification of collagen allows the layer-by-layer deposition of ultrathin collagen assemblies that can stabilize primary cells, such as hepatocytes, as microfluidic tissue models.
FAQs
The sequence maintains the normal relationship among internal structures while the incision is repaired. Closing fascia or muscle first establishes deeper support, allowing subcutaneous tissue and skin to follow the anatomical contour rather than carrying the entire mechanical load. This layered order helps preserve barrier restoration and supports more orderly healing across the wound.
Excessive tension can pull wound edges apart, whereas unaddressed dead space leaves a gap between tissue planes. Layer closure aims to approximate each tissue level closely while limiting both problems. Managing these factors supports wound stability, reduces the likelihood of separation, and creates more consistent conditions for evaluating healing in research models.
Sutures must provide adequate approximation for the tissue layer being repaired without creating unnecessary tension. Because fascia, muscle, subcutaneous tissue, and skin contribute differently to wound support, selection is part of matching closure strength to anatomical needs. Appropriate choices help maintain alignment and limit dead space, which can improve the consistency of postoperative observations.
After the incision has been addressed, the deeper structures are brought together first, commonly beginning with fascia or muscle. The operator then closes subcutaneous tissue and finally the skin, using sutures suited to adequate approximation with limited tension. Following this sequence restores the tissue planes progressively and supports a continuous protective barrier at the surface.
A consistent closure method reduces variation caused by differences in tissue alignment, wound separation, or residual dead space. In animal surgery and experimental wound models, this standardization makes postoperative findings easier to compare across subjects or treatments. It also helps distinguish effects related to the study intervention from changes caused by inconsistent repair technique.
Researchers can use the resulting repair to examine inflammation, regeneration, and broader postoperative outcomes. Maintaining anatomical positioning and barrier function provides a stable foundation for observing how tissues respond over time. In biomedical studies, these observations can help characterize tissue repair while linking visible wound changes to the quality and consistency of the initial closure.