N/A Completed N=500 Randomized Prevention

The Performance of Two Oxygen Delivery Devices Used After General Anesthesia.

Hypoxemia

Source: ClinicalTrials.gov NCT01917526 ↗

Enrolled (actual)

500

Serious AEs

0.0%

Results posted

Jan 2017

Primary outcomePrimary: Number of Participants With Hypoxemia in Both Groups — 0; 0 number of participants

Summary

After general anesthesia, there are the risks for airway obstruction, hypoventilation, atelectasis, ventilation-perfusion mismatch, hypercarbia and hypoxemia,so oxygen supplement in PACU seems necessary. This study aim is to compare the two methods of oxygen supplement which are 1.nasal cannula at O2 flow 4 L/min. 2.oxygen mask with O2 flow 5 L/min. The hypothesis in this study is the 2 methods can equally provide effective oxygen supplement to prevent anesthesia-related hypoxemia. Choosing nasal cannula would be reasonable because it is cheaper and more comfortable to patient.

Outcome Measures

Outcome	Result	p-value
PRIMARY Number of Participants With Hypoxemia in Both Groups	0; 0	—
SECONDARY The Causes of Hypoxemia	0; 0	—

Eligibility Criteria

Inclusion Criteria

General anesthesia
Age 18-70 years
American Society of Anesthesiology (ASA)physical status 1-3
Elective case

Exclusion Criteria

ASA physical status class 4 or more
Unstable pulmonary diseases
BMI > 35 kg/m2
oxygen saturation < 94% when breathing in room air
Respiratory muscle weakness eg.myasthenia gravis
Central nervous system abnormalities eg.drowsiness, hypoventilation
Patients who have been intubated or needed ventilatory support before operation
Plan to remain intubated after the operation
Intracranial, intrathoracic and upper abdomen surgery
Patients who nasogastric tube is inserted
Airway problems eg. sinusitis
Nasal cavity related surgery or nasal packing eg. endoscopic sinus surgery
Patient refusal

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Data sourced from ClinicalTrials.gov (NCT01917526). Outcome figures and adverse-event rates are extracted automatically from the registry's posted results and are provided for clinician reference, not as a substitute for the primary publication. Informational only — not medical advice.