Airway Management During Deep Sedation in Hysteroscopy

Status Not yet recruiting

Clinical Trial Summary

Hysteroscopy is used to examine and treat uterine diseases. Because of severe pain due to uterine distention and cervical dilatation, deep sedation usually be provided during this procedure. Respiratory depression and upper airway obstruction are main respiratory complications during deep sedation. Face mask and nasopharyngeal airway are main airway management during deep sedation. Oxygen reserve index is a non-invasive parameter, it reflects the moderate hyperoxia statues. In this study, investigators compare the effect of face mask and nasopharyngeal airway management on oxygenation during deep sedation in participants undergoing hysteroscopy. Investigators also investigate whether oxygen reserve index monitoring reduce the incidence of hypoxemia.

Clinical Trial Description

Randomization: Participants are divided into four groups: face mask airway management without oxygen reserve index (ORi) monitoring group (FM-ORi group), face mask airway management with ORi monitoring group (FM+ORi group), nasopharyngeal tube airway management without ORi monitoring group (NT-ORi group), nasopharyngeal tube with ORi monitoring group (NT+ORi group). Deep sedation process: Participants fasting solid and liquid for 8 and 4 hours respectively. Electrocardiogram (ECG), oxygen saturation (SpO2), blood pressure (BP) and bispectral index (BIS) were monitored. Sufentanil 5 μg injected for 30 seconds, followed by target-control infusion of propofol (plasma target concentration 3-6 ug/ml) to maintain BIS between 50-70. Criteria for deep sedation: participants have purposeful response after repeated and/or painful stimulation, there is minimal effect on hemodynamic stability. Airway management: In FM-ORi and FM+ORi group, participants spontaneous inhaled oxygen through face mask at a flow rate of 5 L/min. in FM-ORi group, assist ventilation through face mask was performed when SpO2 dropped to 95%, it lasted for another 10 seconds when SpO2 restored to 100%. In FM+ORi group, assist ventilation through face mask was performed when ORi dropped to 0.1, it lasted for another 10 seconds when ORi restored to 0.1. In NT-ORi and NT+ORi group, participants spontaneous inhaled oxygen through face mask before induction and through nasopharyngeal tube after consciousness disappear at a flow rate of 5 L/min. in NT-ORi group, assist ventilation through face mask was performed when SpO2 dropped to 95%, it lasted for another 10 seconds when SpO2 restored to 100%. In NT+ORi group, assist ventilation through face mask was performed when ORi dropped to 0.1, it lasted for another 10 seconds when ORI restored to 0.1. ;

Study Design

Related Conditions & MeSH terms

Deep Sedation

Clinical Trial Details

NCT number	NCT05701839
Study type	Interventional
Source	First Affiliated Hospital Xi'an Jiaotong University
Contact	Zheng Guan, MD
Phone	0086-13572592715
Email	guanzheng1980@126.com
Status	Not yet recruiting
Phase	N/A
Start date	February 1, 2023
Completion date	November 30, 2024

View Details

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