Pill endoscopy

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Infobox Medical Procedure
Name	Pill endoscopy
ICD	[[International Classification of Diseases|]]
ICD-9-CM	[[ICD-9-CM|]]
MeSH	[[Medical Subject Headings|]]
OPS-301 code
MedlinePlus	[[MedlinePlus|]]
eMedicine	[[eMedicine|]]
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Pill endoscopy, also known as capsule endoscopy or wireless endoscopy, is a non-invasive medical procedure used to visualize and diagnose conditions in the gastrointestinal (GI) tract. It involves swallowing a small, disposable capsule that contains a camera and light source, which captures images as it passes through the digestive system. These images are then transmitted to a recording device worn by the patient, allowing healthcare professionals to examine the GI tract for abnormalities.

History

The concept of pill endoscopy was first introduced in the late 1990s as a less invasive alternative to traditional endoscopy procedures. The first commercially available capsule endoscopy system, known as the "M2A" capsule, was approved by the United States Food and Drug Administration (FDA) in 2001. Since then, pill endoscopy has become a widely used diagnostic tool in gastroenterology.

Procedure

The pill endoscopy procedure typically involves the following steps:

1. Preparation: Prior to the procedure, patients are advised to follow specific dietary restrictions and may be required to fast for a certain period of time. This ensures optimal visualization of the GI tract during the examination.

1. Swallowing the capsule: The patient swallows the pill endoscopy capsule with a glass of water. The capsule is typically the size of a large vitamin pill and is designed to be easily swallowed.

1. Recording device: After swallowing the capsule, the patient wears a recording device, which is a small, portable device that captures and stores the images transmitted by the capsule. The recording device is usually worn around the waist or carried in a small bag.

1. Passage through the GI tract: As the capsule travels through the GI tract, it captures thousands of images per second using a built-in camera and light source. The images are transmitted wirelessly to the recording device.

1. End of procedure: Once the capsule has passed through the entire GI tract, the patient returns to the healthcare facility to have the recording device removed. The images are then downloaded and reviewed by a healthcare professional.

Indications

Pill endoscopy is commonly used to investigate various conditions in the GI tract, including:

• Gastrointestinal bleeding: Pill endoscopy can help identify the source of bleeding in the small intestine, which is often difficult to visualize using traditional endoscopy methods.

• Crohn's disease: Pill endoscopy can provide valuable information about the extent and severity of Crohn's disease, a chronic inflammatory condition that primarily affects the digestive tract.

• Small bowel tumors: Pill endoscopy can help detect small bowel tumors, such as adenocarcinoma or lymphoma, which may not be easily visible using other imaging techniques.

• Celiac disease: Pill endoscopy can aid in the diagnosis of celiac disease, an autoimmune disorder characterized by an intolerance to gluten.

Advantages and Limitations

Pill endoscopy offers several advantages over traditional endoscopy procedures, including:

• Non-invasiveness: Pill endoscopy is a non-invasive procedure that does not require sedation or the insertion of a flexible tube into the body.

• Visualization of the entire small intestine: Pill endoscopy allows for a comprehensive examination of the small intestine, which is often challenging to visualize using other methods.

However, pill endoscopy also has some limitations, including:

• Inability to perform therapeutic interventions: Unlike traditional endoscopy, pill endoscopy does not allow for therapeutic interventions, such as biopsies or the removal of polyps.

• Limited control over the capsule's movement: The movement of the capsule through the GI tract is largely dependent on natural peristalsis, which may result in incomplete visualization of certain areas.

Conclusion

Pill endoscopy, also known as capsule endoscopy or wireless endoscopy, is a valuable diagnostic tool in gastroenterology. It allows for non-invasive visualization of the GI tract, particularly the small intestine, and aids in the diagnosis of various conditions. While it has its limitations, pill endoscopy has revolutionized the field of gastrointestinal imaging and continues to play a crucial role in the diagnosis and management of GI disorders.