Head Positions to Open the Airway IV

Medical University Innsbruck

Status: Completed

Conditions: Cardiac or Respiratory Arrest, Anaesthesia

Treatments: Procedure: head extension; Procedure: neutral position; Procedure: anaesthesiologist´s position

Study type: Interventional

Funder types: Other

Identifiers

NCT01909310

UN5155 327/4.10

Details and patient eligibility

About

After routine induction of general anaesthesia peak airway pressure (= P max) and other respiratory parameters(i.e. expiratory tidal volume, expiratory CO2) are measured with and without head support in three different head positions: neutral position, reclination of the head, a position deemed ideal by the anaesthesist; primary study goal is pmax depending on different head positions;

Enrollment: 80 patients

Sex: All

Ages: 18+ years old

Volunteers: Accepts Healthy Volunteers

Inclusion criteria

• male and female patients ≥ 18 years
• elective operations in general anaesthesia
• patient´s written informed consent
• American Society of Anesthesiology scale I-III

Exclusion criteria

• non fasting patient
• body mass index > 35 kg/m2
• anamnestic cervical spine pathologies or other peripheral neurological deficiences due to pathologies of the cervical spine
• malformations of the head or upper airway
• history of perforation of stomach or esophagus
• anamnestic hiatus hernia or reflux
• acute respiratory infection or obstructive airway disease

Trial design

Primary purpose: Treatment

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: Single Blind

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80 participants in 2 patient groups

with head support

Active Comparator group

Description:

patients are ventilated with their heads positioned on a support

Treatment:

Procedure: neutral position

Procedure: head extension

Procedure: anaesthesiologist´s position

without head support

Sham Comparator group

Description:

patients are ventilated without head support

Treatment:

Procedure: neutral position

Procedure: head extension

Procedure: anaesthesiologist´s position