Observation on the Effectiveness and Safety of Nasopharyngeal End-Tidal CO2 Monitoringduring Among Nonoperating Room Anesthesia
Objective:To explore the effectiveness and safety of the disposable nasal end-tidal CO2 monitoring composite nasal oxygen catheter kit in non-intubated general anesthesia among nonoperating room anesthesia.Methods:60 patients who underwent non-intubated general anesthesia for artificial abortion surgery were selected.Fentanyl at a dose of 0.1μg/kg and propofol at a dose of 2.0-2.5mg/kg were slowly intravenously injected at a rate of 5-10mg/s to induce anesthesia until the disappearance of eyelash reflex.After anesthesia induction,the experimental group(P group)had a nasal-pharyngeal end-tidal CO2 monitoring kit inserted into one nostril for oxygen supply and monitoring of end-tidal CO2 pressure(PETCO2).The control group(C group)used a disposable end-tidal CO2 sampling nasal cannula for oxygen supply and monitoring of PETCO2.PETCO2,SPO2,respiratory rate,occurrence of adverse reactionswere observed and compared between the two groups.Results:There were no statistically significant differences in ASA classification,age,BMI,surgical time,and awakening time between the two groups.The PETCO2 levels in the P group were higher than those in the C group before anesthesia induction,1 minute after induction,and 5 minutes after induction(P<0.05).The SPO2 in the P group was higher than that in the C group 5 minutes after anesthesia induction(P<0.05).There were no significant differences between the two groups in respiratory rate,SPO2,and PETCO2 at other time points.The occurrence of upper airway obstruction in the experimental group was significantly lower than that in the control group(P<0.05),while the occurrence of postoperative nasal-pharyngeal discomfort or pain in the experimental group was higher than that in the control group(P<0.05).There were no significant differences between the two groups in the occurrence of respiratory apnea and intraoperative movement.Conclusion:The nasal end-tidal CO2 monitoring kit,while ensuring sufficient ventilation and oxygen supply,can effectively monitor the waveform and values of end-tidal CO2,help anesthesiologists timely detect upper airway obstruction or respiratory depression in non-intubated general anesthesia patients,and intervene promptly to avoid the occurrence of hypoxemia or potential respiratory insufficiency.
nasal oxygen end-tidal carbon dioxide monitoring kitnon-intubated general anesthesiaairway management
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