The value of preoxygenation combined with nasopharyngeal ventilation hypoxemia on the prevention of BFQ during the non-pain hysteroscopy of obese patients

Abstract

Objective To discuss the effect of pre-inhalation combined with nasopharyngeal ventilation hypoxemia on the prevention of hypoxemia during the non-pain hysteroscopy of obese patients. Methods A total of 90 patients who were treated with painless hysteroscopy in the hospital from January to June 2017 were divided into the control group and the experimental group according to the random number table method, 45 cases in each group.The control group adopted the conventional methods, while the experimental group took the method of pre-inhalation for 3 ~ 5 minutes with mask oxygen combined with the placement of nasopharyngeal airway tube during surgery.The change of (SPO2), hypoxemia and respiratory depression at different points of time during check-up of the two groups was compared. Results There was statistical significance in terms of the difference of SpO2 between the experimental group and the control group before, during and after check(P<0.01). There was statistical significance in terms of the difference of hypoxia, hypoxemia, apnea, and wake delay of the two groups during surgery(P<0.05). Conclusion Pre-inhalation for 3~5 minutes by oxygen mask before surgery for obese patients who have received painless hysteroscopic surgery can effectively improve the body's capacity of oxygen reserve, reduce the risk of hypoxemia, which has good clinical application value. Key words: Painless hysteroscopy; Obese patients; Preoxygenation; Nasopharyngeal tube; Hyoxemia