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

Trial statusRecruiting
Trial phaseNot applicable
Trial typeInterventional
Biological sexAll
Age18+
SponsorDalarna County Council, Sweden

About this trial

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.

Eligibility criteria

This trial does not accept healthy volunteers

Qualifiers

clinical diagnosis of swimming induced pulmonary edema (SIPE) with need of acute treatment (oxygen saturation ≤91%)

18 years and older

informed consent

Disqualifiers

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

Trial design

Design model

Parallel

Treatments tested in this trial

  • Oxygen + continuous positive airway pressure (CPAP)

    Combination product

    Oxygen-driven CPAP (7,5 cmH2O): 20 min treatment followed by 10 min rest and assessment

  • Oxygen

    Drug

    Oxygen: 20 min treatment followed by 10 min rest and assessment

Treatment groups

90 Participants
are divided into 2 treatment groups
Group A: Oxygen + CPAP-treatmentExperimental treatment 1 intervention
Group B: Oxygen-treatmentActive comparator 1 intervention

Trial outcomes

Primary outcomes

1

Absolute peripheral oxygen saturation (%) after treatment

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

Time frame
after 20 min treatment followed by 10 min rest

Secondary outcomes

1

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

Time frame
change before versus after 20 min treatment followed by 10 min rest
2

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"

Time frame
after 20 min treatment followed by 10 min rest
3

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.

Time frame
after 20 min treatment followed by 10 min rest
4

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.

Time frame
after 20 min treatment followed by 10 min rest

Other outcomes

Sponsors and contacts

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