{'fraction_non_alphanumeric': 0.01725703905540418, 'fraction_numerical': 0.018165304268846504, 'mean_word_length': 5.84472049689441, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
The effect of nasopharyngeal ventilation on the detection rate of colorectal polyps in two hundred middle‐aged and elderly overweight patients

At present colorectal polyp is the main precancerous disease of colorectal cancer, accounting for about 85%90%.1 Multiple consensuses recommends that residents aged 5075 years all belong to the screening population for colorectal polyps.2,3 Painless colonoscopy is an important method for the diagnosis and treatment of colorectal polyps.4 Overweight patients, namely people with body mass index (BMI) ≥24 or abdominal circumference ≥85 cm in male patients and ≥82 cm in female patients,5 have increased difficulty in colonoscopy and intraoperative anaesthesia. Anaesthesiologists need to improve the ventilation and saturation by indwelling nasopharyngeal ventilation tubes or conducting chinlift combined with mask oxygen to effectively reduce the risk of anaesthesia in such patients.6 However, there is no report on the relationship between the indwelling of nasopharyngeal ventilation tube and the detection rate of colorectal polyps in those patients.