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Related Concept Videos

Clot Retraction and Fibrinolysis01:16

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After a fibrin clot is formed, the next step is clot retraction, a vital process facilitated by platelet contractile proteins, such as actin and myosin. These proteins pull the fibrin strands closer together and condense the clot. This action reduces the size of the clot, creating a smaller, denser structure that effectively seals off the damaged vessel. Clot retraction consolidates the clot and helps with wound healing by bringing the edges of the damaged blood vessel closer together.
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Related Experiment Video

Updated: Nov 3, 2025

The Rabbit Blood-shunt Model for the Study of Acute and Late Sequelae of Subarachnoid Hemorrhage: Technical Aspects
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Ultra-delayed post-FTRD resection bleeding.

Vincent Zimmer1,2

  • 1Department of Medicine Marienhausklinik St. Josef Kohlhof Neunkirchen Germany.

Clinical Case Reports
|June 4, 2021
PubMed
Summary
This summary is machine-generated.

Non-exposed endoscopic full-thickness resection (EFTR) offers a streamlined approach for challenging colorectal lesions. This technique, utilizing the over-the-scope clip (OTSC) device, effectively combines resection and closure, minimizing complications like perforation and bleeding.

Keywords:
colonoscopyendoscopic full‐thickness resectionendoscopic resectionfull‐thickness resection devicegranulation

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Area of Science:

  • Gastroenterology and Endoscopy
  • Surgical Techniques
  • Colorectal Cancer Treatment

Background:

  • Difficult-to-resect colorectal lesions pose a significant clinical challenge.
  • Traditional resection methods may carry risks of perforation and bleeding.
  • Endoscopic full-thickness resection (EFTR) has emerged as a promising minimally invasive technique.

Purpose of the Study:

  • To evaluate the efficacy and safety of non-exposed endoscopic full-thickness resection (EFTR) assisted by the over-the-scope clip (OTSC) device.
  • To highlight the advantages of combining resection and defect closure in a single endoscopic procedure.
  • To assess the complication rates associated with this EFTR technique.

Main Methods:

  • Utilizing the over-the-scope clip (OTSC) platform for device-assisted EFTR.
  • Performing resection of colorectal lesions without prior exposure of the lesion.
  • Simultaneous closure of the resection defect using the OTSC device.

Main Results:

  • Non-exposed EFTR with OTSC facilitates streamlined treatment of difficult colorectal lesions.
  • The combined resection and closure approach is associated with uncommon rates of perforation and/or bleeding.
  • This technique simplifies the management of complex colorectal lesions endoscopically.

Conclusions:

  • Device-assisted non-exposed EFTR using the OTSC platform is an effective and safe method for managing difficult colorectal lesions.
  • The integrated resection and closure mechanism significantly reduces the risk of major complications.
  • EFTR represents a valuable advancement in endoscopic treatment for colorectal pathology.