Hemostatic Powder Spray TC-325 | |
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Other names | Hemospray, TC-325 |
Hemostatic Powder Spray TC-325 (Hemospray or TC-325) is an inert, highly absorptive mineral agent which is used for the treatment of gastrointestinal bleeding. Applied during endoscopy to bleeding lesions, TC-325 is derived from bentonite, and is used to achieve hemostasis (control of bleeding) by absorbing water and creating a barrier that leads to mechanical tamponade (pressure) and concentration of clotting factors, resulting in enhanced coagulation (clotting of blood). [1] TC-325 was approved for gastrointestinal bleeding from causes other than gastric or esophageal varices (e.g., nonvariceal bleeding). TC-325 results in immediate control of bleeding in 91-93% of cases. [2] [3] Technical success has gradually increased between 2011 and 2019, which may be due to device improvements or physician familiarity with the application of TC-325. [2]
Hemostatic Powder Spray TC-325 was approved by the United States Food and Drug Administration in 2018 for gastrointestinal bleeding. [4] Technical success has gradually increased between 2011 and 2019, which may be due to device improvements or physician familiarity with the application of TC-325. [2]
TC-325 is recommended for temporary control of gastrointestinal bleeding when other treatments are ineffective or not available. [5] TC-325 may also be used for massive bleeding with poor visualization or diffuse bleeding due to cancer. [6]
The device is not FDA approved for the treatment of gastroesophageal variceal bleeding. [7] However, TC-325 is 90.4% effective in achieving initial hemostasis in variceal bleeding, and its use was associated with a 4.2% rate of rebleeding. [8] TC-325 use for variceal bleeding is safe. [9]
TC-325 is 91-93% effective in achieving initial control of bleeding, [3] [2] but does not prevent re-bleeding from occurring. [3] Rebleeding is most likely to occur if the initial bleed was brisk (spurting) or hypotension was present. [10]
Risks of TC-325 use include failure to control bleeding, gastrointestinal perforation, bowel obstruction, or malfunction of device or delivery system. If TC-325 is used for the control of bleeding at the site of a sphincterotomy or ampullary resection, there is a risk of biliary obstruction. Additional risks include allergy to the TC-325 powder. The overall rate of adverse events to TC-325 is 0.7%. [11]
Proton-pump inhibitors (PPIs) are a class of medications that cause a profound and prolonged reduction of stomach acid production. They do so by irreversibly inhibiting the stomach's H+/K+ ATPase proton pump.
Ulcerative colitis (UC) is a long-term condition that results in inflammation and ulcers of the colon and rectum. The primary symptoms of active disease are abdominal pain and diarrhea mixed with blood (hematochezia). Weight loss, fever, and anemia may also occur. Often, symptoms come on slowly and can range from mild to severe. Symptoms typically occur intermittently with periods of no symptoms between flares. Complications may include abnormal dilation of the colon (megacolon), inflammation of the eye, joints, or liver, and colon cancer.
Gastroesophageal reflux disease (GERD) or gastro-oesophageal reflux disease (GORD) is one of the upper gastrointestinal chronic diseases where stomach content persistently and regularly flows up into the esophagus, resulting in symptoms and/or complications. Symptoms include dental corrosion, dysphagia, heartburn, odynophagia, regurgitation, non-cardiac chest pain, extraesophageal symptoms such as chronic cough, hoarseness, reflux-induced laryngitis, or asthma. On the long term, and when not treated, complications such as esophagitis, esophageal stricture, and Barrett's esophagus may arise.
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Upper gastrointestinal bleeding is gastrointestinal bleeding in the upper gastrointestinal tract, commonly defined as bleeding arising from the esophagus, stomach, or duodenum. Blood may be observed in vomit or in altered form as black stool. Depending on the amount of the blood loss, symptoms may include shock.
Fecal occult blood (FOB) refers to blood in the feces that is not visibly apparent. A fecal occult blood test (FOBT) checks for hidden (occult) blood in the stool (feces).
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Stretta is a minimally invasive endoscopic procedure for the treatment of gastroesophageal reflux disease (GERD) that delivers radiofrequency energy in the form of electromagnetic waves through electrodes at the end of a catheter to the lower esophageal sphincter (LES) and the gastric cardia – the region of the stomach just below the LES. The energy heats the tissue, ultimately causing it to swell and stiffen; the way this works was not understood as of 2015, but it was thought that perhaps the heat causes local inflammation, collagen deposition and muscular thickening of the LES and that it may disrupt the nerves there.
A stress ulcer is a single or multiple mucosal defect usually caused by physiological stress which can become complicated by upper gastrointestinal bleeding. This ulcers can be caused by shock, sepsis, trauma or other conditions and are found in patients with chronic illnesses. This ulcers are a significant issue in patients in critical and intensive care.
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Forrest classification is a classification of upper gastrointestinal hemorrhage used for purposes of comparison and in selecting patients for endoscopic treatment.
Therapeutic endoscopy is the medical term for an endoscopic procedure during which treatment is carried out via the endoscope. This contrasts with diagnostic endoscopy, where the aim of the procedure is purely to visualize a part of the gastrointestinal, respiratory or urinary tract in order to aid diagnosis. In practice, a procedure which starts as a diagnostic endoscopy may become a therapeutic endoscopy depending on the findings, such as in cases of upper gastrointestinal bleeding, or the finding of polyps during colonoscopy.
A gastric balloon, also known as an intragastric balloon (IGB) or a stomach balloon, is an inflatable medical device that is temporarily placed into the stomach to help reduce weight. It is designed to help provide weight loss when diet and exercise have failed and surgery is not wanted or not recommended for the patient.
In medicine, endoscopic sleeve gastroplasty (ESG) is a minimally-invasive, non-surgical (incisionless), endoscopic weight loss procedure that is part of the field of endoscopic bariatric therapies. To perform ESG, a physician sutures a patient’s stomach into a more narrow, shorter tube-like configuration. The result is a more restricted stomach that allows patients to feel fuller while eating fewer calories, which facilitates weight loss.
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