OUT-OF-HOSPITAL CPAP STUDY

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

PHASE4

Total Enrollment

124 participants

Study Classification

INTERVENTIONAL

Study Start Date

2006-10-31

Study Completion Date

2008-04-30

Brief Summary

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Evaluate efficacy and safety of CPAP in a randomised standard treatment controlled study, in out-of-hospital patients with acute cardiogenic pulmonary edema.

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Detailed Description

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Acute cardiogenic pulmonary edema is a frequent medical emergency. Several studies have shown that continuous positive airway pressure is effective in acute cardiogenic pulmonary edema, through improvement in gas exchange, reduction in intubation rate and a trend towards reduced mortality. CPAP is usually obtained with a hermetic nasal or facemask witch has an expiratory valve to maintain a positive pressure at the end of the expiration. With this support, the patient does not receive any assistance with respiration.

The available data about CPAP concern patients hospitalised in cardiology intensive care units, in resuscitation areas or in emergency departments.

We will undertake a controlled prospective randomised trial to investigate whether the early use of CPAP would improve oxygenation and survival, as compared with standard medical therapy in patients with acute cardiogenic pulmonary edema.

This study will include 124 patients over 18 years of age, suffering of acute cardiogenic pulmonary edema, with a respiratory rate greater than 25 bpm and oxygen saturation less than 90 %. The patients will be include just after the beginning of the episode, in prehospital mobile intensive car unit (SAMU) and will be all admitted in resuscitation area in a central hospital. They will be randomly assigned to CPAP or conventional oxygen therapy. The randomisation sequence is generated by the random numbers table. Closed envelopes containing the allocated treatment will be stored in the emergency department and will be opened when the patient is included.

Oxygen saturation (by pulse-oxymetry), heart rate, respiratory rate, dyspnea, blood pressure will be measured every 15 min during the transport to the intensive care unit and every hour. The blood gazes will be measured at the arrival. The intubation rate, the duration of the hospitalisation and the mortality in the thirty days following initial treatment will be noted.

Conditions

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Acute Cardiogenic Pulmonary Edema

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

SINGLE

Investigators

Study Groups

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CPAP

positive airway pressure

Group Type EXPERIMENTAL

CPAP

Intervention Type PROCEDURE

standard medical therapy

conventional oxygen therapy

Group Type ACTIVE_COMPARATOR

standard treatment

Intervention Type DRUG

Interventions

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CPAP

Intervention Type PROCEDURE

standard treatment

Intervention Type DRUG

Eligibility Criteria

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Inclusion Criteria

* patient with supposed acute cardiogenic pulmonary edema, defined as acute dyspnea associated with a past of cardiomyopathy ischemia and physical signs consistent with pulmonary edema.
* patient giving written informed consent

Exclusion Criteria

* Glasgow score \< 10
* Acute myocardial infarction ; ventricular arrhythmia ; pneumothorax ; evidence of pneumonia ; immediate need for intubation ; heart failure or respiratory stop witch requires a reanimation ; cardiogenic shock (systolic blood pressure \< 90 mmhg)
* Any neurological impairment that would prevent the protocol compliance
* participation in another study throughout this one
* women pregnant or nursing
* vomiting
* patient with an history of gastric surgery (\< 8days)

Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No