Predicting High-Flow Nasal Cannula Failure in Acute Hypoxemic Respiratory Failure Using Metabolomics and Clinical Data (META-RESPIRE)

Hospital del Mar Research Institute (IMIM)

Status: Not yet enrolling

Conditions: Acute Hypoxemic Respiratory Failure

Study type: Observational

Funder types: Other

Identifiers

NCT07607080

PI25/00024 (Other Grant/Funding Number)

2025/12387/I

202520-30-31 (Other Grant/Funding Number)

Details and patient eligibility

About

The goal of this observational study is to determine whether metabolomic profiles combined with clinical data can predict high-flow nasal cannula (HFNC) failure and help optimize respiratory support in adult patients with acute hypoxemic respiratory failure (AHRF). The main questions it aims to answer are:

Can metabolomic biomarkers identify patients at higher risk of HFNC failure? Does combining metabolomic and clinical data improve the prediction of respiratory support escalation and clinical outcomes?

Participants will:

Receive standard HFNC treatment according to clinical practice. Undergo collection of clinical, physiological, and laboratory data. Provide blood samples for metabolomic analysis during respiratory support.

Full description

This observational study aims to evaluate whether metabolomic signatures combined with routinely collected clinical and physiological data can improve the prediction of high-flow nasal cannula (HFNC) failure in patients with acute hypoxemic respiratory failure (AHRF). HFNC is widely used as first-line non-invasive respiratory support in AHRF; however, delayed recognition of treatment failure may lead to worse clinical outcomes, including delayed intubation and increased morbidity and mortality.

The study will prospectively enroll adult patients with AHRF treated with HFNC. Clinical variables, respiratory parameters, laboratory results, and patient outcomes will be collected during routine clinical care. Blood samples will also be obtained for metabolomic analysis to identify molecular profiles associated with HFNC success or failure.

The primary objective is to identify metabolomic and clinical predictors associated with HFNC failure and escalation of respiratory support. Secondary objectives include evaluating the association between metabolomic patterns and relevant clinical outcomes such as endotracheal intubation, duration of respiratory support, intensive care unit (ICU) length of stay, and mortality. The study also aims to develop predictive models integrating biological and clinical data to support personalized respiratory management strategies in AHRF.

Enrollment: 300 estimated patients

Sex: All

Ages: 18+ years old

Volunteers: No Healthy Volunteers

Inclusion criteria

• Adult patients (≥18 years old).
• Admission to the intensive care unit (ICU) with acute hypoxemic respiratory failure (AHRF).
• Treatment with high-flow nasal cannula (HFNC) as the initial respiratory support strategy.
• Inclusion within the first 24 hours after HFNC initiation.
• Provision of informed consent by the patient or legally authorized representative.

Exclusion criteria

• Age <18 years.
• Active do-not-resuscitate (DNR) orders or limitation of therapeutic effort.
• Refusal or inability to provide informed consent.
• Previous invasive mechanical ventilation before study inclusion.

Trial design

300 participants in 1 patient group

Adult Patients With Acute Hypoxemic Respiratory Failure Treated With HFNC

Description:

Adult patients with acute hypoxemic respiratory failure receiving high-flow nasal cannula (HFNC) as part of routine clinical care. Clinical, physiological, and metabolomic data will be collected to evaluate predictors of HFNC failure and respiratory support escalation.