ALI/ARDS Clinical Sub-phenotyping Study

Trial statusRecruiting
Trial phaseNot listed
Trial typeObservational
Biological sexAll
Age18+
SponsorChina-Japan Friendship Hospital

About this trial

1. Construct a structured clinical data and biosample information platform for Chinese patients with acute lung injury/ acute respiratory distress syndrome. 2. By deciphering the heterogeneity of patients with acute lung injury/ acute respiratory distress syndrome, achieve clinical, longitudinal physiological, and biological sub-phenotyping to guide individualized precision treatment and improve prognosis.

Eligibility criteria

This trial does not accept healthy volunteers

Qualifiers

Meet the diagnostic criteria for Acute Respiratory Distress Syndrome (ARDS) according to the updated global definition in 2023.

The patient or their legal representative signs an informed consent form.

Disqualifiers

Individuals aged less than 18 years old.

Those who refuse to participate in the study.

Trial population

Updated global diagnostic criteria for Acute Respiratory Distress Syndrome (ARDS) in 2023 are as follows: Supportive respiratory criteria: Endotracheal intubation, or non-invasive ventilation (NIV)/continuous positive airway pressure (CPAP) with minimum expiratory positive airway pressure (EPAP) ≥ 5 cmH2O, or high-flow nasal oxygen therapy with a minimum flow rate ≥ 30 L/min. Hypoxemia criteria: Arterial partial pressure of oxygen to fraction of inspired oxygen ratio (PaO2/FiO2) ≤ 300 mmHg, or peripheral oxygen saturation to fraction of inspired oxygen ratio (SpO2/FiO2) ≤ 315 mmHg, with simultaneous peripheral oxygen saturation (SpO2) ≤ 97%. Radiographic criteria: Chest X-ray, chest computed tomography (CT), or trained ultrasound confirming bilateral pulmonary opacities.

Trial design

Design model

Cohort

Time perspective

Prospective

Treatments tested in this trial

  • Collect peripheral blood and bronchoalveolar lavage fluid

    Procedure/Surgery

    Peripheral venous blood will be collected and stored from the study participants at a total of five time points: Day 0, Day 1, Day 2, Day 3 after admission to the ICU, and the day of ICU discharge/death. The collection will be conducted after assessing the patients' eligibility for ARDS diagnosis. Each time point will involve the collection of one tube of peripheral venous blood, totaling 5 mL per sample. Within 24 hours after patients' admission to the ICU and meeting the assessment criteria for ARDS diagnosis, bronchoalveolar lavage fluid (BALF) will be collected and retained, totaling 10 mL.

Treatment groups

No treatment groups listed

Trial outcomes

Primary outcomes

1

ICU mortality

In ICU mortality

Time frame
up to 12 weeks
2

hospital mortality

In hospital mortality

Time frame
up to 24 weeks

Secondary outcomes

1

28 days without mechanical ventilation

28 days without mechanical ventilation

Time frame
up to 28 days
2

length of stay in the ICU

length of stay in the ICU

Time frame
up to 12 weeks
3

Total length of hospital stay

Total length of hospital stay

Time frame
up to 24 weeks
4

Mortality at 1 year after discharge

Mortality at 1 year after discharge

Time frame
through study completion, an average of 1 year

Other outcomes

Sponsors and contacts

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