Colonoscopy Perforation
Colonoscopy Perforation - Related Videos
01:25
Endoscopic Procedures II: Colonoscopy
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2025
The colon, or large intestine, is the final segment of the digestive system. Its primary functions include absorbing water and vitamins produced by gut bacteria and transforming waste from liquid to solid to form stool. In adults, the large intestine is approximately 5 feet long and consists of four main sections: Ascending Colon: Rises upward on the right side of the abdomen. Transverse Colon: Stretches from the ascending colon across the body to the left side. Descending Colon: Travels...
01:22
Esophageal Perforation-I: Introduction
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2025
Esophageal perforation is a severe medical condition characterized by a breach in the integrity of the esophageal wall. This breach can occur due to various factors such as trauma, medical procedures, or underlying diseases. When the esophageal wall is compromised, it allows food, fluids, and digestive juices into the chest cavity or adjacent structures, leading to potential complications and health risks. The location of esophageal perforation can vary, occurring anywhere along the esophagus.
04:43
Induction of a Subarachnoid Hemorrhage in a Mouse Model through Endovascular Perforation
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2025
The video demonstrates the induction of subarachnoid hemorrhage via endovascular perforation in a mouse model. An incision is made in the neck region of the anesthetized mouse to access the common carotid artery and its bifurcation. A filament is inserted through the arteries to perforate an intracranial artery branch, inducing subarachnoid hemorrhage.
06:22
Perforated Patch-Clamp Recording of Olfactory Sensory Neurons in Mice
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2025
This video demonstrates electrophysiological recording of olfactory sensory neurons (OSNs) in mice using a perforated patch-clamp technique. The olfactory epithelium, containing OSNs with fluorophore-tagged odor receptors, is isolated from a mouse and secured in a recording chamber. A recording pipette is clamped to the dendritic knob of an OSN, and nystatin within the pipette perforates the membrane to form electrical connectivity with the cell. Finally, another pipette is used to deliver an...
02:50
Perforated Patch-Clamp Recordings of Inner Ear Sensory Neuron Cell Bodies
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2025
This video demonstrates the patch-clamp technique for measuring ionic currents in inner ear sensory neuron cell bodies. It details the preparation and use of a polished patch-clamp pipette filled with an internal solution containing amphotericin B, which perforates the membrane to allow ion movement while preserving intracellular conditions. Voltage pulses are applied to trigger and record ion channel activity, providing insights into their properties and behavior.
FAQs
Several procedural forces can injure the colon wall. Direct trauma may occur from the instrument, while excessive insufflation can place damaging pressure on the bowel. Loop formation may also contribute to injury, and therapeutic maneuvers such as polypectomy create additional risk, especially when the intestinal wall is fragile.
A fragile bowel wall has less resistance to mechanical stress during endoscopic examination. Polypectomy adds a therapeutic intervention that can compromise the wall, making perforation more likely in susceptible tissue. These factors matter because the underlying tissue condition and the type of procedure help explain why similar examinations can produce different complications.
Abdominal pain, abdominal distension, fever, and tachycardia can signal a serious post-procedure complication. Free intraperitoneal air is another important finding because it indicates gas outside the bowel. When these signs occur, they warrant clinical assessment and can prompt imaging to determine whether a perforation has occurred.
Evaluation begins when symptoms or examination findings suggest bowel injury. Imaging, often computed tomography, can be used to look for free intraperitoneal air and help characterize the problem. The results are considered alongside the timing of recognition and the patient’s clinical stability when determining the appropriate management strategy.
Management depends on several factors rather than a single standard intervention. Clinicians consider the size of the perforation, when it was recognized, the degree of contamination, and whether the patient is stable. Depending on this assessment, care may range from observation with antibiotics to endoscopic closure or emergency surgery.
Observation and antibiotics are among the possible approaches when the overall clinical circumstances permit nonoperative management. Their selection depends on the perforation’s characteristics, the timing of recognition, contamination, and patient stability. Because these factors can change the level of risk, treatment decisions require clinical assessment rather than relying on symptoms alone.
Endoscopic closure offers a procedural approach to managing selected perforations, whereas emergency surgery provides operative treatment when the situation requires it. The choice is guided by perforation size, contamination, timing, and patient stability. These options illustrate how management is individualized according to both the injury and the patient’s condition.