Technique description
polyps, polyp, vascular ectasias
NEOPLASMS, VASCULAR ECTASIA, COLON, ALTERNATION, COLD
Colon preparation was started the day before the exam, with a restricted liquid diet and two bisacodyl tablets (5mg) taken at 5 pm. On the day of the exam, 20% mannitol (500ml) diluted in clear juice (500ml) was used, ingested within 1 hour, approximately 5 hours before the exam. Colon preparation was evaluated according to the Aronchick scale as excellent, good, fair, poor, or inadequateAll examinations were monitored by an anesthesiologist, who performed sedation with propofol, fentanyl citrate, and/or midazolam.At the end of the first endoscopic evaluation of the cecum and ascending colon, the patients were selected consecutively and with simple alternation to undergo a second evaluation with or without indigo carmine dye.Indigo carmine (0.4%) was instilled directly into the working channel of the colonoscope, with a volume ranging from 20ml to 30ml, in a 60ml syringe, with the device positioned in the middle portion of the ascending colon. The syringe was always filled with air, to promote full use of the desired volume. After dye application, the air in the ascending colon was completely aspirated, allowing the dye to naturally distribute throughout the right colon, leading to adequate staining of all segments.After identifying any polyp in the studied segment, it was immediately resected in both groups. Polyps up to 4mm were resected with biopsy forceps, those between 5mm and 10mm with a cold loop, and those larger than 10mm with a diathermic loop. Lesions larger than 20mm were resected using the mucosectomy technique.Data were collected immediately after the examinations and included age, sex, main indication for the examination, colonic level reached, number and size of polyps found in the first evaluation, number and size of polyps found in the second evaluation, and other endoscopic findings (diverticulum, vascular ectasias, or neoplasms).