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Related Concept Videos

Coagulation01:09

Coagulation

The coagulation phase is a critical part of the body's process to prevent blood loss following injury to blood vessels. It involves chemical reactions that form a clot to seal the injured area. The clotting process begins shortly after injury, within 15-20 seconds for severe damage and 1-2 minutes for minor injuries.
During the coagulation phase, clotting factors, or procoagulants, play a vital role in initiating and progressing the coagulation cascade. This cascade is a series of reactions...
Coagulation01:06

Coagulation

Colloidal solids are solid particles suspended in solution. They are usually negatively charged, attracting a compact primary layer of positively charged ions, which attract more counterions to form an electrical double layer. Electrostatic repulsion between the charged double layers prevents the particles from colliding, stabilizing the colloids. These solids are often undesirable because they can contain toxins that are difficult to remove. Coagulation is a technique that helps aggregate and...
Extrinsic and Intrinsic Pathways of Hemostasis01:20

Extrinsic and Intrinsic Pathways of Hemostasis

Blood clotting or coagulation involves extrinsic and intrinsic pathways, which ultimately merge into the common pathway, forming a fibrin clot.
The Extrinsic Pathway
The extrinsic pathway of coagulation is typically initiated by tissue damage that exposes blood to tissue factor (TF), a protein released by the damaged tissue cells outside the blood vessels—this interaction with TF triggers biochemical reactions involving specific clotting factors. The key player here is Factor VII, which forms a...
Introduction to Hemostasis01:05

Introduction to Hemostasis

Hemostasis is a complex physiological process that prevents excessive bleeding when a blood vessel is injured. It's crucial for maintaining the integrity of the circulatory system, as it ensures that our blood remains fluid while still within the vascular network and yet clots to prevent blood loss upon vessel injury.
The three phases of hemostasis involve many clotting factors present in plasma and several substances released by platelets and injured tissue cells. It is a fast, localized, and...

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Bumping phenomenon during continuous coagulation with bipolar forceps.

Takeshi Mikami1, Masahiko Wanibuchi, Nobuhiro Mikuni

  • 1Department of Neurosurgery, Sapporo Medical University, Hokkaido, Sapporo, Japan. tmikami@sapmed.ac.jp

Neurologia Medico-Chirurgica
|October 26, 2012
PubMed
Summary
This summary is machine-generated.

Coagulum rupture during bipolar coagulation, a phenomenon similar to microwave bumping, can be minimized. Using IsoCoolTM forceps and adjusting techniques can prevent this issue, improving surgical outcomes.

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Area of Science:

  • Biomedical Engineering
  • Surgical Technology
  • Therapeutic Devices

Background:

  • Sudden coagulum rupture during continuous bipolar coagulation can cause hemostasis failure and tissue damage.
  • This phenomenon, termed 'bumping,' is analogous to microwave bumping, resulting from uneven heat distribution and rapid temperature increases.

Purpose of the Study:

  • To investigate the conditions leading to bumping during bipolar coagulation.
  • To compare the performance of different bipolar forceps types in relation to bumping.
  • To identify methods for preventing coagulum rupture during surgical procedures.

Main Methods:

  • Whole blood samples were used to study bumping during bipolar coagulation.
  • Two types of bipolar forceps (gold-plated and IsoCoolTM) were evaluated.
  • Time to bumping, occurrence rate, and thermal characteristics (using thermography) were measured.

Main Results:

  • Increased bipolar coagulator output reduced the time to bumping and increased its occurrence rate.
  • IsoCoolTM forceps demonstrated a significantly lower bumping rate than gold-plated forceps at lower outputs (p<0.0001).
  • Repeatedly opening and closing forceps tips at the coagulation site successfully prevented bumping.

Conclusions:

  • Bumping during bipolar coagulation is influenced by heat, power, equipment, and technique.
  • Understanding forceps characteristics and employing advanced temperature control techniques are crucial for neurosurgeons.
  • Optimizing coagulation techniques can mitigate risks associated with coagulum rupture.