What is the purpose of suctioning during sigmoidoscopy?

The purpose of suctioning during sigmoidoscopy is to clear the视野 of any fluids, mucus, or fecal matter that may obstruct the view of the intestinal lining. This allows the healthcare provider to visualize the colon more clearly, facilitating accurate diagnosis and assessment of any abnormalities. Additionally, suctioning can help collect samples for biopsy if needed. Overall, it enhances the effectiveness and safety of the procedure.