| Esophagogastroduodenoscopy |
|---|
|
Endoscopic still of esophageal ulcers seen after banding of esophageal varices, at time of esophagogastroduodenoscopy |
| ICD-9-CM |
45.13 |
|---|
| MeSH |
D016145 |
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| OPS-301 code |
1-631, 1-632 |
|---|
|
[edit on Wikidata] |
Esophagogastroduodenoscopy (), (EGD) also called by various other names, is a diagnostic endoscopic procedure that visualizes the upper part of the gastrointestinal tract down to the duodenum. It is considered a minimally invasive procedure since it does not require an incision into one of the major body cavities and does not require any significant recovery after the procedure (unless sedation or anesthesia has been used). However, a sore throat is common.[1][2][3]
Medical uses
Gastroscopy or duodenoscopy is performed for a number of indications, one of the most common being in unexplained anemia where it is used to diagnose gastric or duodenal ulcers among other things.
Diagnostic
- Unexplained anemia (usually along with a colonoscopy)
- Upper gastrointestinal bleeding as evidenced by hematemesis or melena
- Persistent dyspepsia in patients over the age of 45 years
- Heartburn and chronic acid reflux – this can lead to a precancerous lesion called Barrett's esophagus
- Persistent vomiting
- Dysphagia – difficulty in swallowing
- Odynophagia – painful swallowing
- Persistent nausea
- IBD (inflammatory bowel diseases)
Surveillance
- Surveillance of Barrett's esophagus
- Surveillance of gastric ulcer or duodenal ulcer
- Occasionally after gastric surgery
Confirmation of diagnosis/biopsy
- Abnormal barium swallow or barium meal
- Confirmation of celiac disease (via biopsy)
Therapeutic
- Treatment (banding/sclerotherapy) of esophageal varices
- Injection therapy (e.g. epinephrine in bleeding lesions)
- Cutting off of larger pieces of tissue with a snare device (e.g. polyps, endoscopic mucosal resection)
- Application of cautery to tissues
- Removal of foreign bodies (e.g. food) that have been ingested
- Tamponade of bleeding esophageal varices with a balloon
- Application of photodynamic therapy for treatment of esophageal malignancies
- Endoscopic drainage of pancreatic pseudocyst
- Tightening the lower esophageal sphincter
- Dilating or stenting of stenosis or achalasia
- Percutaneous endoscopic gastrostomy (feeding tube placement)
- Endoscopic retrograde cholangiopancreatography (ERCP) combines EGD with fluoroscopy
- Endoscopic ultrasound (EUS) combines EGD with 5–12 MHz ultrasound imaging
Newer interventions
- Endoscopic trans-gastric laparoscopy
- Placement of gastric balloons in bariatric surgery
Complications
The complication rate is about 1 in 1000.[4] They include:
- aspiration, causing aspiration pneumonia
- bleeding
- perforation
- cardiopulmonary problems
Limitations
Problems of gastrointestinal function are usually not well diagnosed by endoscopy since motion or secretion of the gastrointestinal tract are not easily inspected by EGD. Nonetheless, findings such as excess fluid or poor motion of the gut during endoscopy can be suggestive of disorders of function. Irritable bowel syndrome and functional dyspepsia are not diagnosed with EGD, but EGD may be helpful in excluding other diseases that mimic these common disorders.
Procedure
The tip of the endoscope should be lubricated and checked for critical functions including: tip angulations, air and water suction, and image quality.
The patient is kept NPO (Nil per os) or NBM (Nothing By Mouth) that is, told not to eat, for at least 4 hours before the procedure. Most patients tolerate the procedure with only topical anesthesia of the oropharynx using lidocaine spray. However, some patients may need sedation and the very anxious/agitated patient may even need a general anesthetic. Informed consent is obtained before the procedure. The main risks are bleeding and perforation. The risk is increased when a biopsy or other intervention is performed.
The patient lies on his/her left side with the head resting comfortably on a pillow. A mouth-guard is placed between the teeth to prevent the patient from biting on the endoscope. The endoscope is then passed over the tongue and into the oropharynx. This is the most uncomfortable stage for the patient. Quick and gentle manipulation under vision guides the endoscope into the esophagus. The endoscope is gradually advanced down the esophagus making note of any pathology. Excessive insufflation of the stomach is avoided at this stage. The endoscope is quickly passed through the stomach and through the pylorus to examine the first and second parts of the duodenum. Once this has been completed, the endoscope is withdrawn into the stomach and a more thorough examination is performed including a J-maneuver. This involves retroflexing the tip of the scope so it resembles a 'J' shape in order to examine the fundus and gastroesophageal junction. Any additional procedures are performed at this stage. The air in the stomach is aspirated before removing the endoscope. Still photographs can be made during the procedure and later shown to the patient to help explain any findings.
In its most basic use, the endoscope is used to inspect the internal anatomy of the digestive tract. Often inspection alone is sufficient, but biopsy is a valuable adjunct to endoscopy. Small biopsies can be made with a pincer (biopsy forceps) which is passed through the scope and allows sampling of 1 to 3 mm pieces of tissue under direct vision. The intestinal mucosa heals quickly from such biopsies.
Equipment
Indigo carmine staining (stomach)
- Endoscope
- Non-coaxial optic fiber system to carry light to the tip of the endoscope
- A chip camera at the tip of the endoscope – this has now replaced the coaxial optic fibers of older scopes that were prone to damage and consequent loss of picture quality
- Air/water channel to clean the lens using the water and Air channel for drying the lens itself and to insufflate the Esophagus and the stomach during the operation to prevent from collapsing the track to better vision in the procedure
- Suction/Working channels – these may be in the form of one or more channels
- Control handle – this houses the controls
- Umbilical Cords that connected to the light source and Video processor to supply the endoscope with suction and Air Pressure and water for (Suction and irrigation Process) and light to transmit in the body to deliver the video signal to the processor to show the live image on the monitor
- Stack
- Light source
- Suction
- Electrosurgical unit
- Video recorder/photo printer
- Instruments
- Biopsy forceps
- Snares
- Injecting needles
- Chemical agents
- Dimethicone
- Acetate
- Indigo carmine
Endoscopic image of adenocarcinoma of duodenum seen in the post-bulbar duodenum.
Endoscopic image of gastric antral vascular ectasia seen as a radial pattern around the pylorus before (top) and after (bottom) treatment with argon plasma coagulation
Endoscopic image of Barrett's esophagus, which is the area of red mucosa projecting like a tongue.
Endoscopic still of duodenum of patient with celiac disease showing scalloping of folds.
Gastric ulcer in antrum of stomach with overlying clot due to gastric lymphoma.
Endoscopic image of a posterior wall duodenal ulcer with a clean base, which is a common cause of upper GI hemorrhage.
Endoscopic images of an early stage stomach cancer. 0-IIa, tub1. Left column: Normal light. Right column: computed image enhanced (FICE). First row: Normal. Second row: Acetate stained. Third row: Acetate-indigocarmine mixture (AIM) stained.
Alternative names
Esophagogastroduodenoscopy (EGD) or oesophagogastroduodenoscopy (EGD or OGD) is also called panendoscopy (PES) and upper GI endoscopy. It is also often called just upper endoscopy, upper GI, or even just endoscopy; because EGD is the most commonly performed type of endoscopy, the ambiguous term endoscopy is sometimes informally used to refer to EGD by default. The term gastroscopy literally focuses on the stomach alone, but in practice the usage overlaps.
See also
References
- ^ "Gastroscopy – examination of oesophagus and stomach by endoscope". BUPA. December 2006. Retrieved 2007-10-07.
- ^ National Digestive Diseases Information Clearinghouse (November 2004). "Upper Endoscopy". National Institutes of Health. Retrieved 2007-10-07.
- ^ "What is Upper GI Endoscopy?". Patient Center -- Procedures. American Gastroenterological Association. Archived from the original on 2007-09-28. Retrieved 2007-10-07.
- ^ "EGD – esophagogastroduodenoscopy".
Surgical procedures involving the digestive system (ICD-9-CM V3 42–54, ICD-10-PCS 0D) |
|---|
| Digestive tract | | Upper GI tract | | SGs / Esophagus |
- Esophagectomy
- Heller myotomy
- Sialography
- Impedance–pH monitoring
- Esophageal pH monitoring
- Esophageal motility study
|
|---|
| Stomach |
- Bariatric surgery
- Adjustable gastric band
- Gastric bypass surgery
- Sleeve gastrectomy
- Vertical banded gastroplasty surgery
- Collis gastroplasty
- Gastrectomy
- Billroth I
- Billroth II
- Roux-en-Y
- Gastroenterostomy
- Gastropexy
- Gastrostomy
- Percutaneous endoscopic gastrostomy
- Hill repair
- Nissen fundoplication
- Pyloromyotomy
|
|---|
| Medical imaging |
- Endoscopy: Esophagogastroduodenoscopy
- Barium swallow
- Upper gastrointestinal series
|
|---|
|
|---|
| Lower GI tract | | Small bowel |
- Bariatric surgery
- Duodenal switch
- Jejunoileal bypass
- Bowel resection
- Ileostomy
- Intestine transplantation
- Jejunostomy
- Partial ileal bypass surgery
- Strictureplasty
|
|---|
| Large bowel |
- Appendicectomy
- Colectomy
- Colonic polypectomy
- Colostomy
- Hartmann's operation
|
|---|
| Rectum |
- Abdominoperineal resection / Miles operation
- Lower anterior resection
- Total mesorectal excision
|
|---|
| Anal canal |
- Anal sphincterotomy
- Anorectal manometry
- Lateral internal sphincterotomy
- Rubber band ligation
- Transanal hemorrhoidal dearterialization
|
|---|
| Medical imaging |
- Endoscopy: Colonoscopy
- Anoscopy
- Capsule endoscopy
- Enteroscopy
- Proctoscopy
- Sigmoidoscopy
- Abdominal ultrasonography
- Defecography
- Double-contrast barium enema
- Endoanal ultrasound
- Enteroclysis
- Lower gastrointestinal series
- Small-bowel follow-through
- Transrectal ultrasonography
- Virtual colonoscopy
|
|---|
| Stool tests |
- Fecal fat test
- Fecal pH test
- Stool guaiac test
|
|---|
|
|---|
|
|---|
| Accessory | | Liver |
- Artificial extracorporeal liver support
- Bioartificial liver devices
- Liver dialysis
- Hepatectomy
- Liver biopsy
- Liver transplantation
- Portal hypertension
- Transjugular intrahepatic portosystemic shunt [TIPS]
- Distal splenorenal shunt procedure
|
|---|
| Gallbladder, bile duct |
- Cholecystectomy
- Cholecystostomy
- ERCP
- Hepatoportoenterostomy
- Medical imaging: Cholangiography
- Cholecystography
- Cholescintigraphy
|
|---|
| Pancreas |
- Frey's procedure
- Pancreas transplantation
- Pancreatectomy
- Pancreaticoduodenectomy
- Puestow procedure
|
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|
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| Abdominopelvic | | Peritoneum |
- Diagnostic peritoneal lavage
- Intraperitoneal injection
- Laparoscopy
- Omentopexy
- Paracentesis
- Peritoneal dialysis
|
|---|
| Hernia |
- Hernia repair: Inguinal hernia surgery
- Femoral hernia repair
|
|---|
|
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| Other |
- Laparotomy
- Rapid urease test / Urea breath test
|
|---|
| CPRs |
- MELD
- PELD
- UKELD
- Child–Pugh score
- Ranson criteria
- Milan criteria
|
|---|
Endoscopy |
|---|
| Gastrointestinal tract |
- Upper:
- Esophagogastroduodenoscopy
- Lower: Enteroscopy
- Colonoscopy
- Sigmoidoscopy
- Proctoscopy
- Anoscopy
- Capsule endoscopy
- Accessory: Endoscopic retrograde cholangiopancreatography
|
|---|
| Respiratory tract |
- Rhinoscopy
- Laryngoscopy
- Bronchoscopy
|
|---|
| Urinary tract |
- Nephroscopy
- Ureteroscopy
- Cystoscopy
|
|---|
| Female reproductive system |
- Colposcopy
- Hysteroscopy
- Falloposcopy
- Culdoscopy
|
|---|
| Closed cavity via incision |
- Laparoscopy
- Laparoscopic surgery
- Arthroscopy
- Thoracoscopy
- Mediastinoscopy
- Coelioscopy
|
|---|
| Other |
- Fetoscopy
- Angioscopy
- Otoscopy
|
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