Endoscopic mucosal resection (EMR) is a technique developed for the removal of sessile or flat neoplastic lesions confined to the superficial layers (mucosa and submucosa) of the gastrointestinal tract. Bleeding and perforation are well-known complications of EMR. Here we report the first case of paralytic ileus after EMR of a caecal polyp. A 66-year-old man was scheduled for elective EMR of a 3.5-cm caecal polyp under general anaesthesia after a screening colonoscopy. The procedure was performed by an expert endoscopist, and air was insufflated during the procedure because of the unavailability of CO₂. The polyp was successfully removed; the procedure duration was 81 min. After the procedure, the patient complained of abdominal pain and dyspnoea. He developed tachypnoea and tachycardia as well as oxygen desaturation with SpO₂ 84%. He was administered oxygen therapy via a non-rebreather mask, following which his oxygenation improved. His abdominal X-ray findings were consistent with ileus. Therefore, a nasogastric tube was placed, and the patient was admitted to our hospital. He was managed conservatively and underwent serial abdominal X-rays that showed improvement of the ileus. On the fourth day of admission, he was started on an oral diet; on the sixth day of admission, he was discharged with resolving ileus. Computed tomography enterography performed 1 week after discharge showed complete resolution of the ileus. Factors that may have contributed to the occurrence of ileus in our patient include the use of air during the procedure, location of the polyp (caecal), duration of the procedure, effect of electrocautery, use of general anaesthesia and possibility of aspiration pneumonitis. This case report will make endoscopists aware of the abovementioned factors while performing EMR as this procedure can lead to the complication of paralytic ileus with significant patient morbidity. Conservative treatment should be attempted first before any other intervention.

内窥镜黏膜切除术（EMR）是一种用于清除局限于胃肠道浅表层（黏膜和黏膜下层）的无蒂或扁平赘生物病变的技术。出血和穿孔是EMR的众所周知的并发症。在这里，我们报告了首例盲肠息肉发生麻痹性肠梗阻的病例。一名66岁的男性被安排在结肠镜筛查后在全身麻醉下接受3.5厘米盲肠息肉的选择性EMR。该过程由专业的内镜医师执行，由于无法获得CO ₂而在过程中通入空气。息肉已成功移除；程序持续时间为81分钟。手术后，患者主诉腹痛和呼吸困难。他发展了呼吸急促和心动过速以及SpO _2引起的氧饱和度降低84％。通过非循环呼吸面罩对他进行了氧气治疗，之后他的充氧得到了改善。他的腹部X线检查结果与肠梗阻一致。因此，放置了鼻胃管，患者被送入我们医院。对他进行了保守治疗，并进行了腹部X线检查，显示肠梗阻有所改善。入院的第四天，他开始口服饮食。在入院的第六天，他因肠梗阻而出院。出院后1周进行的计算机断层扫描肠造影显示肠梗阻完全消失。可能导致我们患者肠梗阻发生的因素包括手术过程中使用空气，息肉的位置（盲肠），手术时间，电灼的效果，使用全身麻醉和吸入性肺炎的可能性。该病例报告将使内镜医师在进行EMR时意识到上述因素，因为此程序可能导致麻痹性肠梗阻并发患者明显发病。在进行任何其他干预之前，应首先尝试保守治疗。