Efficacy of HFNC as an Alternative to CPAP Therapy in Surgical Patients With Suspected Moderate to Severe OSA

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

40 participants

Study Classification

INTERVENTIONAL

Study Start Date

2018-09-13

Study Completion Date

2020-07-31

Brief Summary

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High flow, humidified, temperature-regulated nasal insufflation is not a new concept. It is used widely in the treatment of hypoxaemic respiratory failure in critically ill patients, as an alternative to non-invasive positive ventilation via face or nasal mask. Recently, its use has been extended to the perioperative setting for pre-oxygenation and prolonging apnoeic time to desaturation. Both CPAP and high flow nasal cannula insufflation devices are licensed for use clinically in Singapore. We conduct this pilot study because its perioperative use in our adult OSA population is currently not well-defined.

Detailed Description

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Continuous positive airway pressure (CPAP) therapy is the only treatment for obstructive sleep apnoea (OSA) shown to reduce its long-term adverse effects on the cardiovascular system. However, due to difficult patient-mask interface and discomfort, compliance rate amongst patients with OSA is low, and reported to be only between 20-50%. High flow, humidified, temperature-regulated nasal cannula insufflation (of air or oxygen) is a well-documented and safe treatment in intensive care, paediatrics and respiratory medicine for patients with hypoxaemic respiratory failure. Its use in adult patients with obstructive sleep apnoea, especially in the perioperative setting is not well studied. Our hospital has a ''fast-track'' protocol for OSA patients who require surgery. They are started on CPAP therapy 2 to 5 days prior to surgery and in the immediate post operative period (ie. perioperatively). If these patients are non-compliant to the CPAP mask device, high flow nasal insufflation is a possible alternative treatment. We aim to randomise these patients into 4 groups, receiving conventional CPAP face mask or high flow nasal cannula at 3 flow rates, and study them with respect to incidence and number of documented desaturations. In addition, patient satisfaction, compliance to device and any adverse events will be monitored.

Conditions

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OSA

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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OSA support via CPAP face mask

Auto-titrated according to the settings made by sleep physicians, FiO2 0.21

Group Type ACTIVE_COMPARATOR