Vascular Pedicle Occlusion
Vascular Pedicle Occlusion - Related Videos
06:32
Coronoid-Temporalis Pedicled Flap for Orbital Floor Defect Reconstruction
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2025
This protocol presents a novel coronoid-temporalis pedicled flap (CTPF) technique for reconstructing small-to-medium orbital floor defects. CTPF avoids microvascular risks while maintaining biomechanical stability. Clinical cases demonstrate effective structural restoration, reduced complications, and preserved facial symmetry, offering a viable alternative to traditional grafts or alloplastic materials.
03:45
Right Hemihepatectomy by Suprahilar Intrahepatic Transection of the Right Hemipedicle using a Vascular Stapler
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Cited by 1 •
2010
This video describes a right hemihepatectomy with intrahepatic transection of the right hemipedicle leaving the hepatoduodenal ligament completely untouched.
03:23
Laparoscopic Anatomical Right Anterior Sectionectomy with a Hepatic Pedicle-first Approach: Technical Details and Representative Case Illustration
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2025
This article aims to present a novel Laennec's capsule-guided laparoscopic approach for right anterior sectionectomy, highlighting its potential to improve safety, precision, and reproducibility in complex liver resections.
08:18
Engineered Vascularized Muscle Flap
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Cited by 6 •
2016
To date, thick tissue defects are typically reconstructed by applying autologous tissue flaps or engineered tissues. In this protocol, we present a new method for engineering vascularized tissue flap bearing an autologous pedicle, to serve as a substitute to autologous flaps.
10:31
Surgical Angiogenesis in Porcine Tibial Allotransplantation: A New Large Animal Bone Vascularized Composite Allotransplantation Model
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Cited by 5 •
2017
Currently any kind of vascularized composite allotransplantation depends on long-term-immunosuppression, difficult to support for non-life-critical indications. We present a new porcine tibial VCA model that can be used to study bone VCA and demonstrate the use of surgical angiogenesis to maintain bone viability without the need of long-term immune-modulation.
FAQs
Arterial obstruction primarily reduces the delivery of oxygenated blood to the tissue, whereas venous obstruction prevents effective drainage. Impaired drainage can produce congestion, edema, and rising tissue pressure, creating a different physiological pattern from inadequate inflow. Distinguishing these effects helps clinicians interpret vascular findings and recognize which part of the flap circulation may be failing.
These problems can obstruct the artery, the vein, or both vessels within the flap’s vascular supply. Thrombosis blocks the vessel pathway, while kinking or external compression can mechanically restrict flow. Because either inflow or drainage may be affected, identifying the underlying type of obstruction is important for interpreting the flap’s condition and selecting an urgent response.
Delayed recognition allows impaired circulation to persist, worsening the effects of limited oxygenated flow or inadequate venous drainage. Clinical examination and vascular monitoring support timely detection, while urgent intervention may improve the chance of tissue salvage. This time-sensitive relationship makes postoperative surveillance an important part of care after flap reconstruction.
When both vessels are obstructed, the tissue can receive less oxygenated blood while also losing effective venous drainage. The resulting combination joins inadequate inflow with congestion, edema, and rising tissue pressure. Considering both sides of the circulation prevents assessment from focusing only on arterial supply or only on venous outflow when evaluating a threatened flap.
Clinical examination and vascular monitoring provide the main approaches described for recognizing compromised circulation after free-flap or pedicled-flap surgery. They can help identify changes consistent with arterial obstruction, venous obstruction, or another pedicle problem. Repeated surveillance supports earlier escalation, which is relevant because prompt intervention can improve tissue salvage.
The key response is timely recognition followed by urgent intervention. The overview does not specify a single intervention, because management depends on whether thrombosis, kinking, external compression, arterial obstruction, venous obstruction, or combined involvement is present. Prompt assessment therefore connects postoperative monitoring with the practical goal of preserving viable flap tissue.
Awareness of vascular pedicle occlusion informs surgical planning for both free flaps and pedicled flaps, as well as postoperative surveillance strategies. It also provides a clinical basis for research into methods that protect microvascular blood flow. Studying these strategies may improve understanding of how to reduce circulation-related threats and support tissue preservation in reconstructive medicine.