Ultrasonographic Comparison of Gastric Volume After Three Modes of Positive Facemask During Induction of Anaesthesia

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

UNKNOWN

Clinical Phase

NA

Total Enrollment

123 participants

Study Classification

INTERVENTIONAL

Study Start Date

2016-12-31

Study Completion Date

2017-12-31

Brief Summary

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This study is designed to evaluate the occurrence of gastric insufflation and the critical volume of the stomach after three different modes of positive pressure ventilation during induction (Manual-controlled, volume-controlled and pressure-controlled ventilation)

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Detailed Description

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Aspiration of gastric contents can be a serious perioperative complication, which can be related to facemask positive pressure ventilation with unprotected airway. Even with low peak airway pressure (\<15 cm H2O) gastric insufflation may occur. Since gastric content and volume assessment is a new point-of-care ultrasound recommended application, the cross-sectional antra area will be measured using ultrasonography before, continuously during facemask ventilation and after intubation.

Conditions

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Positive-Pressure Respiration Respiratory Aspiration of Gastric Content

Study Design

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Allocation Method

NON_RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

DIAGNOSTIC

Blinding Strategy

SINGLE

Outcome Assessors

Study Groups

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Manual-controlled

Patient in the manual ventilation group will receive facemask ventilation to get a tidal volume of 8-10ml/kg with a respiratory rate of 15/min. The pop-off valve will be set to 20 cm H2O.

Group Type OTHER

Diagnostic ultrasonography of gastric volume

Intervention Type OTHER

Ultrasonic measurement of gastric insufflation during positive pressure ventilation (secondary endpoint) and final gastric volume after positive pressure ventilation (primary endpoint)

Volume-controlled

mechanical breath will be delivered by a Primus ventilator (Dräger, Lubeck, Germany) at a frequency of 15 breath/min. Tidal volume will be set to 8-10 ml/min.

Group Type OTHER

Diagnostic ultrasonography of gastric volume

Intervention Type OTHER

Ultrasonic measurement of gastric insufflation during positive pressure ventilation (secondary endpoint) and final gastric volume after positive pressure ventilation (primary endpoint)

Pressure-controlled

mechanical breath will be delivered by a Primus ventilator (Dräger, Lubeck, Germany) at a frequency of 15 breath/min. Pressure will be adjusted to obtain a tidal volume of 8-10 ml/min.

Group Type OTHER

Diagnostic ultrasonography of gastric volume

Intervention Type OTHER

Ultrasonic measurement of gastric insufflation during positive pressure ventilation (secondary endpoint) and final gastric volume after positive pressure ventilation (primary endpoint)

Interventions

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Diagnostic ultrasonography of gastric volume

Ultrasonic measurement of gastric insufflation during positive pressure ventilation (secondary endpoint) and final gastric volume after positive pressure ventilation (primary endpoint)

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

* ASA status I and II

Exclusion Criteria

* Pregnant woman Obese patient (BMI\>30kgm-2) oropharyngeal or facial anomalies anticipated difficult mask ventilation upper respiratory tract infection history of gastric surgery patient refusal

Minimum Eligible Age

18 Years

Maximum Eligible Age

65 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes