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O2 Versus CPAP Treatment Of Patients Undergoing SIPE Therapy (OCTOPUS) (OCTOPUS)

Primary Purpose

Swimming Induced Pulmonary Edema (SIPE), Pulmonary Edema, Lung Diseases

Status
Recruiting
Phase
Not Applicable
Locations
Sweden
Study Type
Interventional
Intervention
Oxygen + continuous positive airway pressure (CPAP)
Oxygen
Sponsored by
Dalarna County Council, Sweden
About
Eligibility
Locations
Arms
Outcomes
Full info

About this trial

This is an interventional treatment trial for Swimming Induced Pulmonary Edema (SIPE) focused on measuring continuous positive airway pressure (CPAP), oxygen, therapeutics, ultrasonography, oximetry

Eligibility Criteria

18 Years - undefined (Adult, Older Adult)All SexesDoes not accept healthy volunteers

Inclusion Criteria:

  • clinical diagnosis of swimming induced pulmonary edema (SIPE) with need of acute treatment (oxygen saturation ≤91%)
  • 18 years and older
  • informed consent

Exclusion Criteria:

  • declined consent
  • suspected acute coronary syndrome
  • severe asthma diagnosed together with pulmonary edema where beta-agonist-inhalation is needed prior to treatment of pulmonary edema
  • hemodynamic instability or decreased consciousness

Sites / Locations

  • Center of Clinical Research DalarnaRecruiting

Arms of the Study

Arm 1

Arm 2

Arm Type

Experimental

Active Comparator

Arm Label

Oxygen + CPAP-treatment

Oxygen-treatment

Arm Description

Outcomes

Primary Outcome Measures

Absolute peripheral oxygen saturation (%) after treatment
Peripheral oxygen saturation % (continuous variable) measured by peripheral pulse oximetry

Secondary Outcome Measures

Change in absolute peripheral oxygen saturation (%) before and after treatment
Change in peripheral oxygen saturation % (continuous variable) measured by pulse oximetry before and after treatment
Recovery (yes/no) after treatment
Recovery, defined by "peripheral oxygen saturation >95% after treatment" or no recovery, defined by "peripheral oxygen saturation ≤95% after treatment"
Interstitial syndrome assessed by lung ultrasound (yes/no) after treatment
Four chest regions for both lungs are scanned by lung ultrasound; a positive region defined by the presence of three or more B-line artifacts. Bilateral or unilateral presence of two or more positive regions define positive interstitial syndrome.
Absolute number of regions presenting B-lines on lung ultrasound after treatment
Four chest regions for both lungs are scanned by lung ultrasound; a positive region defined by the presence of three or more B-line artifacts. Assessment of the total number of positive regions.
Change in absolute number of regions presenting B-lines on lung ultrasound before and after treatment
Four chest regions for both lungs are scanned by lung ultrasound; a positive region defined by the presence of three or more B-line artifacts. Assessment of the total number of positive regions. Change in absolute number of regions presenting B-lines on lung ultrasound before and after treatment
Change in patient reported outcome measures before and after treatment
Six different patient reported outcome measures assessed by numeric rating scale (NRS) 0-10: cough, sputum, air hunger, breathing effort, tightness in chest, anxiousness. The patients will assess symptoms prior to and after treatment.
Admission to hospital (yes/no)
admission to hospital within or after a maximal treatment time of 40 minutes followed by 20 min rest.
total treatment time
total treatment time until oxygen saturation ≥96% is reached.
subgroup analysis
treatment outcome analysis in patients with different baseline oxygen saturation on admission

Full Information

First Posted
February 4, 2020
Last Updated
July 2, 2022
Sponsor
Dalarna County Council, Sweden
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1. Study Identification

Unique Protocol Identification Number
NCT04307615
Brief Title
O2 Versus CPAP Treatment Of Patients Undergoing SIPE Therapy (OCTOPUS)
Acronym
OCTOPUS
Official Title
Evaluation of Continous Positive Airway Pressure (CPAP) in Swimming Induced Pulmonary Edema (SIPE) -a Randomized Single-blinded Controlled Study
Study Type
Interventional

2. Study Status

Record Verification Date
July 2022
Overall Recruitment Status
Recruiting
Study Start Date
July 2, 2022 (Actual)
Primary Completion Date
July 15, 2025 (Anticipated)
Study Completion Date
July 15, 2025 (Anticipated)

3. Sponsor/Collaborators

Responsible Party, by Official Title
Principal Investigator
Name of the Sponsor
Dalarna County Council, Sweden

4. Oversight

Studies a U.S. FDA-regulated Drug Product
No
Studies a U.S. FDA-regulated Device Product
No
Product Manufactured in and Exported from the U.S.
No
Data Monitoring Committee
No

5. Study Description

Brief Summary
In swimming induced pulmonary edema (SIPE), there is a lack of knowledge regarding optimal treatment. The present study was designed to assess the benefit of continuous positive airway pressure (CPAP) compared to oxygen as a first line treatment of SIPE in the out-of-hospital environment.
Detailed Description
Swimming induced pulmonary edema (SIPE) is an unusual condition affecting otherwise healthy swimmers. SIPE is characterized by acute onset of dyspnea and cough, excessive sputum and occasionally hemoptysis when swimming in open water. The condition usually resolves spontaneously within 48 hours, but may result in serious illness and require emergency care. Case reports describe acute treatment with oxygen alone or in combination with diuretics, beta-agonist-inhalation or continuous positive airway pressure (CPAP). Evidence for optimal treatment strategy is lacking. This study intends to determine whether oxygen alone or applied together with CPAP leads to improvement of oxygen saturation and recovery of patients. The aim is to treat patients on site without involving hospital care. We study a large cohort of approximately 12 000 swimmers during Vansbrosimningen, Sweden's biggest annual open water event with a yearly incidence of SIPE about 0,4%. Adult patients clinically diagnosed with SIPE are randomly assigned in 2 groups receiving treatment during 20 minutes: (1) oxygen 10l/min or (2) oxygen 10l/min and CPAP 7,5 cm H2O. Assessment with outcome measures is taken 10 minutes after treatment. Primary endpoint: oxygen saturation (%) by pulse oxymetry.

6. Conditions and Keywords

Primary Disease or Condition Being Studied in the Trial, or the Focus of the Study
Swimming Induced Pulmonary Edema (SIPE), Pulmonary Edema, Lung Diseases
Keywords
continuous positive airway pressure (CPAP), oxygen, therapeutics, ultrasonography, oximetry

7. Study Design

Primary Purpose
Treatment
Study Phase
Not Applicable
Interventional Study Model
Parallel Assignment
Masking
InvestigatorOutcomes Assessor
Allocation
Randomized
Enrollment
90 (Anticipated)

8. Arms, Groups, and Interventions

Arm Title
Oxygen + CPAP-treatment
Arm Type
Experimental
Arm Title
Oxygen-treatment
Arm Type
Active Comparator
Intervention Type
Combination Product
Intervention Name(s)
Oxygen + continuous positive airway pressure (CPAP)
Intervention Description
Oxygen-driven CPAP (7,5 cmH2O): 20 min treatment followed by 10 min rest and assessment
Intervention Type
Drug
Intervention Name(s)
Oxygen
Intervention Description
Oxygen: 20 min treatment followed by 10 min rest and assessment
Primary Outcome Measure Information:
Title
Absolute peripheral oxygen saturation (%) after treatment
Description
Peripheral oxygen saturation % (continuous variable) measured by peripheral pulse oximetry
Time Frame
after 20 min treatment followed by 10 min rest
Secondary Outcome Measure Information:
Title
Change in absolute peripheral oxygen saturation (%) before and after treatment
Description
Change in peripheral oxygen saturation % (continuous variable) measured by pulse oximetry before and after treatment
Time Frame
change before versus after 20 min treatment followed by 10 min rest
Title
Recovery (yes/no) after treatment
Description
Recovery, defined by "peripheral oxygen saturation >95% after treatment" or no recovery, defined by "peripheral oxygen saturation ≤95% after treatment"
Time Frame
after 20 min treatment followed by 10 min rest
Title
Interstitial syndrome assessed by lung ultrasound (yes/no) after treatment
Description
Four chest regions for both lungs are scanned by lung ultrasound; a positive region defined by the presence of three or more B-line artifacts. Bilateral or unilateral presence of two or more positive regions define positive interstitial syndrome.
Time Frame
after 20 min treatment followed by 10 min rest
Title
Absolute number of regions presenting B-lines on lung ultrasound after treatment
Description
Four chest regions for both lungs are scanned by lung ultrasound; a positive region defined by the presence of three or more B-line artifacts. Assessment of the total number of positive regions.
Time Frame
after 20 min treatment followed by 10 min rest
Title
Change in absolute number of regions presenting B-lines on lung ultrasound before and after treatment
Description
Four chest regions for both lungs are scanned by lung ultrasound; a positive region defined by the presence of three or more B-line artifacts. Assessment of the total number of positive regions. Change in absolute number of regions presenting B-lines on lung ultrasound before and after treatment
Time Frame
change before versus after 20 min treatment followed by 10 min rest
Title
Change in patient reported outcome measures before and after treatment
Description
Six different patient reported outcome measures assessed by numeric rating scale (NRS) 0-10: cough, sputum, air hunger, breathing effort, tightness in chest, anxiousness. The patients will assess symptoms prior to and after treatment.
Time Frame
change before versus after 20 min treatment followed by 10 min rest
Title
Admission to hospital (yes/no)
Description
admission to hospital within or after a maximal treatment time of 40 minutes followed by 20 min rest.
Time Frame
2 hours
Title
total treatment time
Description
total treatment time until oxygen saturation ≥96% is reached.
Time Frame
2 hours
Title
subgroup analysis
Description
treatment outcome analysis in patients with different baseline oxygen saturation on admission
Time Frame
1 hour

10. Eligibility

Sex
All
Minimum Age & Unit of Time
18 Years
Accepts Healthy Volunteers
No
Eligibility Criteria
Inclusion Criteria: clinical diagnosis of swimming induced pulmonary edema (SIPE) with need of acute treatment (oxygen saturation ≤91%) 18 years and older informed consent Exclusion Criteria: declined consent suspected acute coronary syndrome severe asthma diagnosed together with pulmonary edema where beta-agonist-inhalation is needed prior to treatment of pulmonary edema hemodynamic instability or decreased consciousness
Central Contact Person:
First Name & Middle Initial & Last Name or Official Title & Degree
Maria Hårdstedt, MD/PhD
Phone
46-738089464
Email
maria.hardstedt@regiondalarna.se
Facility Information:
Facility Name
Center of Clinical Research Dalarna
City
Falun
ZIP/Postal Code
79182
Country
Sweden
Individual Site Status
Recruiting

12. IPD Sharing Statement

Plan to Share IPD
No

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O2 Versus CPAP Treatment Of Patients Undergoing SIPE Therapy (OCTOPUS)

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