Respiratory failure & ventilation

Alteplase in COVID-19 severe hypoxemic respiratory failure: the TRISTARDS multicenter randomized trial

Ann Intensive CarePublished Randomised controlled trial

Authors' conclusion

Alteplase was not associated with faster clinical recovery from COVID-19 severe hypoxemic respiratory failure.

Study context

Population
Patients with COVID-19 severe hypoxemic respiratory failure65% on HFNO or NIV at baseline
Participants
69 vs 35
Comparison
Alteplase over 5 days plus standard of care (SOC) vs SOC alone
  • Alteplasen = 69
  • SOCn = 35reference
Primary endpoint
Time to clinical improvement (≥ 2-point decrease on WHO Clinical Progression Scale, or hospital discharge)
Follow-up
Up to Day 28
Methodological detailsmulticentre, open-label, closed early (insufficient recruitment), Study closed early due to insufficient patient recruitment
  • Multicentre
  • Open-label
  • Closed early (insufficient recruitment)
  • Study closed early due to insufficient patient recruitment

Primary result

As reported in the abstract

Median time to clinical improvement
GroupValueNote
Alteplasemedian 25 days
SOCmedian > 28 daysmedian not reached

Value

Alteplasemedian 25 days
SOCmedian > 28 days

Note

Alteplase— not stated in the abstract
SOCmedian not reached

Secondary outcomes

All-cause mortality · up to Day 28

unadjusted risk difference - 17% (- 34 to 0) · P = 0.047

OutcomeAlteplaseSOCAdjusted RD (95% CI)P value
All-cause mortality · up to Day 28- 16% (- 31 to 1)P = 0.058
Change in PaO2/FiO2 ratio vs baseline · Day 6mean + 30 (SD 84) mmHgmean - 12 (SD 59) mmHgP = 0.052

Subgroups (high-dose alteplase; no invasive ventilation)

Differences greater with high-dose alteplase and in patients not receiving invasive ventilation

Safety

OutcomeAlteplaseSOC
Treatment discontinuation due to AEs26.1%— not stated in the abstract
Major bleeding9 events0 events

— not stated in the abstract

Major bleeding

No bleeding was fatal

Original publication

Alteplase in COVID-19 severe hypoxemic respiratory failure: the TRISTARDS multicenter randomized trial. Ann Intensive Care. Published 10 November 2024. doi:10.1186/s13613-024-01386-z

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