Effects of transnasal humidified rapid-insufflation ventilatory exchange in the elderly patients receiving painless gastroscopy combined with colonoscopy
CAO Yuan-yuan, DING Ke, ZHAO Xiu-xiu, XU Man, HU Jing, FANG Zhao-jing
Practical Geriatrics . 2022, (12): 1242 -1246 .  DOI: 10.3969/j.issn.1003-9198.2022.12.014