Organ support & nutrition

Incidence, kinetics, and clinical impact of thrombocytopenia in venovenous extracorporeal membrane oxygenation (ECMO): insights from the multicenter observational PROTECMO study

Crit CarePublished Prospective observational cohort study

Authors' conclusion

Thrombocytopenia is highly prevalent in VV ECMO, and associated with a significant increase in the risk of bleeding, and a reduction in 6-month survival, particularly at platelet counts below 100.109/L.

Study context

Population
Adults receiving VV ECMO for respiratory failure
Participants
652 adults
Exposure
Thrombocytopenia vs none during VV ECMO
Outcome
Incidence, risk factors and clinical relevance (bleeding risk) of thrombocytopenia during VV ECMO
Methodological detailsmulticenter
  • Multicenter

Main finding

As reported in the abstract

Thrombocytopenia incidence and bleeding risk
Bleeding event
Hazard ratio (95% CI)P value
Mild
1.611(1.230–2.109)
P = 0.0005
Moderate
1.944(1.484–2.545)
P < 0.0001
Severe
1.876(1.275–2.7680)
P = 0.0014
Thrombocytopenia at least once during ECMO
80.2%
Increase in bleeding risk per 10.109/L decrease in platelet count
3.7% (95% CI: 2.4-5.0%)

Observational data: associations, not effects.

Further findings

Thrombocytopenia at baseline

Thrombocytopenia at baseline — Any thrombocytopenia at baseline
182 (27.9%)

Risk factors for thrombocytopenia < 100.109/L during ECMO

Risk significantly increased with ICU days before ECMO, postoperative admission, immunocompromised state, RRT, septic shock, low hemoglobin, circuit exchange

Original publication

Incidence, kinetics, and clinical impact of thrombocytopenia in venovenous ECMO: insights from the multicenter observational PROTECMO study. Crit Care. Published 7 August 2025. doi:10.1186/s13054-025-05569-3

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