Pre-oxygenation With High-flow Nasal Cannula in Caesarian Section Under General Anesthesia

NCT ID: NCT04711317

Last Updated: 2022-12-20

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

34 participants

Study Classification

INTERVENTIONAL

Study Start Date

2021-03-03

Study Completion Date

2022-11-30

Brief Summary

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The investigators and other groups have demonstrated that high-flow nasal oxygen used during preoxygenation for emergency surgery is at least equally effective as preoxygenation compared to standard tight fitting mask. The investigators also have data from a recent study that indicates that high-flow nasal oxygen might decrease the risk of clinically relevant desaturation below 93% of arterial oxygen saturation.

The studies investigating the concept of high-flow nasal oxygen has up to this date excluded pregnant women. Pregnant woman is a patient group with known difficulties to maintain adequate saturation levels during apnoea. Due to smaller functional residual capacity their oxygen stores after preoxygenation are smaller compared to patients with a normal body mass index. The pregnant woman also have a higher oxygen demand and metabolism due to the growing placenta and the fetus. Pregnant women are therefore a patient group where a method that could prolong time until desaturation would be even more valuable and potentially could save lives.

Based on the above, the investigators now aim to conduct a clinical pilot study, where pregnant women undergoing caesarian section under general anesthesia are pre and perioxygenated with high-flow nasal oxygen. Data from that group will be compared with patients preoxygenated in a traditional manner with tight facemask. This study is done to evaluate an established technique on a patient category that in theory could gain a lot from it.

Detailed Description

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Conditions

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Pregnancy Related Anesthesia Oxygen Deficiency Cesarean Section Complications

Keywords

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Preoxygenation Perioxygenation Nasal high flow oxygen Cesarian sectio

Study Design

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Allocation Method

NON_RANDOMIZED

Intervention Model

SINGLE_GROUP

One intervention group that is compared to a control group that is standard treatment.
Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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Preoxygenation with nasal high flow oxygen

Preoxygenation with nasal high flow oxygen

Group Type EXPERIMENTAL

Nasal high flow oxygen

Intervention Type DEVICE

Pregnant women scheduled for cesarian section in general anaesthesia will be preoxygenated using nasal high flow oxygen

Control group

Standard preoxygenation according to hospital protocol with tight fitting facemask

Group Type NO_INTERVENTION

No interventions assigned to this group

Interventions

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Nasal high flow oxygen

Pregnant women scheduled for cesarian section in general anaesthesia will be preoxygenated using nasal high flow oxygen

Intervention Type DEVICE

Eligibility Criteria

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Inclusion Criteria

1. Adult, \>18 years old
2. Caesarian section under general anesthesia.
3. Pregnant in week 30 or later
4. Capable of understanding the study information and signing the written consent.

Exclusion Criteria

1. BMI \>45
2. Dependency on non-invasive ventilation to maintain oxygen saturation
Minimum Eligible Age

18 Years

Eligible Sex

FEMALE

Accepts Healthy Volunteers

No

Sponsors

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Danderyds Hospital, Stockholm, Sweden

UNKNOWN

Sponsor Role collaborator

Stockholm South General Hospital

OTHER

Sponsor Role collaborator

Karlstad Central Hospital

OTHER

Sponsor Role collaborator

Östra Hospital

OTHER

Sponsor Role collaborator

Karolinska University Hospital

OTHER

Sponsor Role lead

Responsible Party

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Malin Jonsson Fagerlund

Senior Consultant, Associate Professor

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

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Malin Jonsson Fagerlund

Role: PRINCIPAL_INVESTIGATOR

Karolinska University Hospital and Karolinska Insitutet

Locations

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Karlstads Centralsjukhus

Karlstad, , Sweden

Site Status

Danderyds Hospital

Stockholm, , Sweden

Site Status

Karolinska University Hospital, Solna

Stockholm, , Sweden

Site Status

Södersjukhuset

Stockholm, , Sweden

Site Status

Countries

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Sweden

Other Identifiers

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PRIOROB

Identifier Type: -

Identifier Source: org_study_id