Pulse Pressure and Outcomes After Out-of-Hospital Cardiac Arrest (STEP-PRESS)
STEP-PRESS: Association of Pulse Pressure With Early Mortality and Biomarker Outcomes After Out-of-Hospital Cardiac Arrest
Panoramica dello studio
Stato
Stato
Condizioni
Condizioni
Descrizione dettagliata
STEP-PRESS is a predefined exploratory observational substudy nested within STEPCARE, an international, multicenter, randomized factorial trial of intensive-care strategies after out-of-hospital cardiac arrest. STEPCARE is registered as NCT05564754. The STEPCARE biomarker substudy is registered as NCT06471972.
STEP-PRESS will use data collected within the STEPCARE trial and applicable substudy approvals. No additional intervention, patient contact, or deviation from STEPCARE clinical management is planned for STEP-PRESS.
The source population will consist of randomized STEPCARE participants, excluding consent withdrawals. Pulse pressure will be calculated as systolic blood pressure minus diastolic blood pressure using recorded STEPCARE blood-pressure values. The primary exposure is cumulative low pulse-pressure burden, defined as the number of hours during 0 to 12 hours after randomization in which interpolated pulse pressure is below 40 mmHg.
The primary analysis population will be restricted to participants alive 12 hours after randomization, without mechanical circulatory support initiated before or within 24 hours after randomization, and with at least three valid recorded blood-pressure observations during 0 to 12 hours after randomization.
The primary outcome is all-cause mortality from the 12-hour landmark to day 7. Key secondary outcomes include mortality in a 24-hour landmark analysis, neurological biomarker endpoints, 30-day mortality, 6-month survival, and 6-month functional outcome. Six-month poor functional outcome will follow the parent STEPCARE definition of modified Rankin Scale score 4 to 6.
All STEP-PRESS objectives are associational. The substudy is not designed to test whether modifying pulse pressure improves outcomes.
Tipo di studio
Tipo di studio
Iscrizione (Effettivo)
Iscrizione
Contatti e Sedi
Luoghi di studio
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Malmö, Svezia, 20205
- Department of Intensive Care, Skåne University Hospital
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Criteri di partecipazione
Criteri di ammissibilità
Criteri di ammissibilità
Età idonea allo studio
- Adulto
- Adulto più anziano
Accetta volontari sani
Metodo di campionamento
Popolazione di studio
Descrizione
Inclusion Criteria:
- Randomized in the STEPCARE trial.
- Out-of-hospital cardiac arrest.
- Stable return of spontaneous circulation, defined in the parent STEPCARE protocol as at least 20 minutes without chest compressions.
- Unconsciousness after sustained return of spontaneous circulation, defined as not being able to obey verbal commands, or intubated and sedated because of agitation.
- Eligible for intensive care without restrictions or limitations.
- Included in STEPCARE within the parent-trial inclusion window.
- For STEP-PRESS analyses, availability of recorded STEPCARE blood-pressure data sufficient to calculate pulse pressure for the relevant analysis population.
- For the primary STEP-PRESS analysis population: alive 12 hours after randomization, without mechanical circulatory support initiated before or within 24 hours after randomization, and with at least three valid recorded blood-pressure observations during 0 to 12 hours after randomization.
Exclusion Criteria:
- Withdrawal of consent for use of STEPCARE trial data.
- Trauma or hemorrhage as the presumed cause of cardiac arrest.
- Suspected or confirmed intracranial hemorrhage.
- On extracorporeal membrane oxygenation before STEPCARE randomization.
- Pregnancy.
- Previously randomized in the STEPCARE trial.
- For STEP-PRESS primary and 24-hour landmark analyses: mechanical circulatory support initiated before or within 24 hours after randomization.
- For endpoint-specific analyses: missing data required to define the relevant exposure, outcome, or biomarker endpoint.
Piano di studio
Come è strutturato lo studio?
Dettagli di progettazione
Numero di gruppi/coorti
Coorti e interventi
Gruppo / CoorteGruppo / Coorte |
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STEPCARE Participants
Randomized STEPCARE participants included in the STEP-PRESS source population, excluding consent withdrawals.
STEP-PRESS will evaluate pulse-pressure burden as an observational exposure using recorded STEPCARE blood-pressure values.
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Cosa sta misurando lo studio?
Misure di risultato primarie
Misure di risultato primarie
Misura del risultato |
Misura Descrizione |
Lasso di tempo |
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All-Cause Mortality From 12 Hours to Day 7
Lasso di tempo: From 12 hours after randomization through day 7 after randomization
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Death from any cause occurring after the 12-hour landmark and through day 7 after randomization, evaluated in relation to cumulative low pulse-pressure burden below 40 mmHg during 0 to 12 hours after randomization.
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From 12 hours after randomization through day 7 after randomization
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Misure di risultato secondarie
Misure di risultato secondarie
Misura del risultato |
Misura Descrizione |
Lasso di tempo |
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All-Cause Mortality in the 24-Hour Landmark Analysis
Lasso di tempo: From 24 hours after randomization through day 7 after randomization
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Death from any cause occurring after the 24-hour landmark and through day 7 after randomization, evaluated in relation to cumulative low pulse-pressure burden below 40 mmHg during 0 to 24 hours after randomization.
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From 24 hours after randomization through day 7 after randomization
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Neurofilament Light Level at 12 Hours
Lasso di tempo: 12 hours after randomization
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Neurofilament light concentration at 12 hours after randomization, analyzed among participants in the STEPCARE biomarker substudy with available biomarker data.
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12 hours after randomization
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Neuron-Specific Enolase Level at 48 Hours
Lasso di tempo: 48 hours after randomization
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Neuron-specific enolase concentration at 48 hours after randomization, analyzed using available STEPCARE measurements.
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48 hours after randomization
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30-Day All-Cause Mortality
Lasso di tempo: 30 days after randomization
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Death from any cause within 30 days after randomization.
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30 days after randomization
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6-Month Survival
Lasso di tempo: 6 months after randomization
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Survival status at 6 months after randomization.
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6 months after randomization
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Poor Functional Outcome at 6 Months
Lasso di tempo: 6 months after randomization
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Poor functional outcome at 6 months after randomization, defined according to the parent STEPCARE definition as modified Rankin Scale score 4 to 6.
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6 months after randomization
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Collaboratori e investigatori
Sponsor
Sponsor
Pubblicazioni e link utili
Collegamenti utili
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Studia le date principali
Inizio studio (Effettivo)
Inizio studio
Completamento primario (Stimato)
Completamento primario
Completamento dello studio (Stimato)
Completamento dello studio
Date di iscrizione allo studio
Primo inviato
Primo inviato
Primo inviato che soddisfa i criteri di controllo qualità
Primo inviato che soddisfa i criteri di controllo qualità
Primo Inserito (Effettivo)
Primo Inserito
Aggiornamenti dei record di studio
Ultimo aggiornamento pubblicato (Effettivo)
Ultimo aggiornamento pubblicato
Ultimo aggiornamento inviato che soddisfa i criteri QC
Ultimo aggiornamento inviato che soddisfa i criteri QC
Ultimo verificato
Ultimo verificato
Maggiori informazioni
Termini relativi a questo studio
Parole chiave
Termini MeSH pertinenti aggiuntivi
- Malattie del cervello
- Malattie del sistema nervoso centrale
- Malattie del sistema nervoso
- Malattie vascolari
- Malattia cardiovascolare
- Complicanze postoperatorie
- Processi patologici
- Malattie cardiache
- Arresto cardiaco
- Lesioni cerebrali
- Lesioni da riperfusione
- Condizioni patologiche, segni e sintomi
- Sindrome post-arresto cardiaco
- Arresto cardiaco extraospedaliero
- Malattia Charcot-Marie-Tooth, Tipo 1F
Altri numeri di identificazione dello studio
Altri numeri di identificazione dello studio
- STEP-PRESS
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Descrizione del piano IPD
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