Feasibility analysis of non-humidified medium-to-high flowoxygen therapy via mask in patients during the anesthesia recovery period

Objective To explore the feasibility of non-humidified medium-to-high flow oxygen therapy via mask in patients during the anesthesia recovery period. Methods From December 2021 to December 2022, 407 postoperative patients in the post-anesthesia recovery room of a grade-A hospital in Qingdao were selected as the research objects. A non-contemporaneous controlled study was used to divide the research objects into a control group of 223 cases and a test group of 184 cases. The control group used humidified medium-to-high flow oxygen therapy via mask, and the test group used non-humidified medium-to-high oxygen therapy via mask. The effects of oxygen therapy, patient comfort, incidence of adverse reactions, time spent in oxygen therapy-rated nursing, and medical costs were compared between the two groups. Results The humidity of the inhaled and exhaled air in the mask of patients in the test group were lower than those in the control group (P＜0. 01). There was no significant difference in SpO2 at 30 minutes after oxygen inhalation between two groups(P＞0. 05). There was no significant difference in the incidence of nasal discomfort, nausea, chest discomfort, cough, and sticky sputum between two groups(P＞0. 05). There was no significant difference in scores of self-assessment on dry throat and difficulty in expectorating between two groups(P＞0. 05). The time spent in nursing of oxygen therapy in the experimental group were significantly lower than that in the control group (P＜0. 05). The medical expenditure of oxygen therapy was reduced in the test group. Conclusion The non-humidified medium-to-high flow oxygen therapy via masks did not reduce the effect of oxygen therapy and the comfort of patients during the anesthesia recovery period, and did not increase the incidence of adverse reactions of oxygen therapy. It effectively reduced the time spent in oxygen therapy and nursing and related medical costs of patients. It is economical and feasible. It is worth promoting and applying in the post-anesthesia recovery room. (目的 探讨中高流量非湿化面罩吸氧在麻醉复苏期患者中应用的可行性。方法 选取2021年12月—2022年12月在青岛市某三甲医院麻醉恢复室进行术后麻醉复苏的407例患者作为研究对象。采用非同期对照研究, 将研究对象分为对照组223例和试验组184例。对照组采用常规的术后中高流量湿化面罩吸氧, 试验组采用中高流量非湿化面罩吸氧, 对比两组患者的氧疗效果、舒适度、不良反应发生率、氧疗操作护理时间和相关医疗支出。结果 吸气末和呼气末面罩内湿度试验组低于对照组, 差异有统计学意义(P＜0. 01)。面罩吸氧30 min两组患者 SpO2比较, 差异无统计学意义(P＞0. 05)。两组患者面罩吸氧时鼻部不适感、对氧气感到恶心、胸部不适感、氧气刺激咳嗽、痰液黏稠的发生率比较, 差异无统计学意义(P＞0. 05)。两组患者喉咙干燥程度评分和咳痰困难程度评分比较, 差异无统计学意义(P＞0. 05)。试验组氧疗护理操作时间低于对照组, 差异有统计学意义(P＜0. 05)。试验组氧疗医疗支出低于对照组。结论 中高流量非湿化面罩吸氧并未降低麻醉复苏患者氧疗效果及患者舒适度, 也未提高氧疗不良反应发生率, 但有效降低了患者氧疗护理操作时间和相关医疗费用支出, 经济可行, 值得在麻醉恢复室内推广应用。)