A crossover trial to investigate bag mask ventilation over the Switching Interface, in adult patients undergoing general anaesthesia for elective surgery.

Not Applicable

Completed

• Conditions: Airway management during general anaesthesia; Anaesthesiology - Anaesthetics

• Registration Number: ACTRN12619001446156
• Lead Sponsor: Fisher & Paykel Healthcare

Brief Summary

Not available

Detailed Description

Not available

Study Timeline

• Results First Posted: 1900-01-01
• Study Start: 2019-10-18
• Study Completion: 2021-04-19
• Last Update Posted: 18 October 2021

Recruitment & Eligibility

• Status: Completed
• Sex: All
• Target Recruitment: 49

Inclusion Criteria

1) Provide written informed consent.
2) Having elective surgery under general anaesthesia with intravenous induction in an
operating room with a participating anaesthetist..
3) BMI must be less than 35 kgm-2.

Exclusion Criteria

1) Patients in whom CPAP is contraindicated (e.g. pneumothorax, bullous lung disease, craniofacial trauma, airway, foreign body, unstable haemodynamics)
2) Pre-existing nasal obstruction.
3) Pre-existing hypoxaemia (Oxygen Saturation less than or equal to 89%).
4) Known cyanotic congenital heart disease.
5) Patients undergoing induction with volatile anaesthetics.
6) Patients undergoing caesarean section.
7) Bleeding in the nose or oropharynx.
8) Patients requiring preoperative oxygen therapy secondary to chronic lung disease.
9) Uncontrolled cardiac arrhythmias.
10) Uncontrolled heart failure.
11) Patients with known allergies to anaesthetic agents.
12) Severe hypertension (diastolic blood pressure greater than 120 mmHg).
13) Patients with unstable angina or a recent ( 6 or fewer months) myocardial infarction.
14) Current pulmonary embolism.
15) Symptomatic severe aortic stenosis.
16) Patients in whom a high FiO2 is contradicted (e.g. patients treated with Bleomycin).
17) Patients undergoing procedures with electrocautery or lasers.
18) Patients at risk of aspiration including those who are not fasted or those undergoing rapid sequence induction.
19) Patients where bag mask ventilation is not possible.
20) Patients with oesophageal reflux disease

Study & Design

• Study Type: Interventional
• Study Design: Not specified