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Table 3 Univariable and multivariable analyses of factors associated with ischemic stroke on VA-ECMO

From: Ischemic and hemorrhagic brain injury during venoarterial-extracorporeal membrane oxygenation

Factor

Univariable analysis

Multivariable analysis

OR [95% CI]

P value

OR [95% CI]

P value

Age > 53 years

0.8 [0.4–1.5]

0.5

  

Female sex

0.97 [0.5–1.9]

1

  

SAPS II score at ICU admission ≥ 72

0.69 [0.4–1.3]

0.3

  

Renal replacement therapy

1.6 [0.7–3.4]

0.4

  

Intra-aortic balloon pump

1.13 [0.59–2.16]

0.7

  

Central VA-ECMO

2.8 [1.4–5.5]

0.004

3.2 [1.5–6.6]

0.002

Post-cardiac surgery

2.2 [1.2–4.1]

0.01

  

Blood tests at ECMO initiation

 Lactate > 6 mmol/L

1.0 [0.5–1.9]

1

  

 pH < 7.32

1.1 [0.6–2.1]

0.9

  

 Platelets > 350 giga/L

3.7 [1.3–10.0]

0.02

3.8 [1.4–10.7]

0.01

 Bilirubin > 20 µmol/L

0.8 [0.4–1.5]

0.5

  

 Fibrinogen > 6 g/L

1.8 [0.7–5.0]

0.2

  

 Prothrombin time > 70%a

1.3 [0.5–3.5]

0.6

  

 aPTT, patient/normal-value ratio < 1.5

1.2 [0.6–2.4]

0.2

  
  1. VA-ECMO venoarterial-extracorporeal membrane oxygenation, OR odds ratio, SAPS Simplified Acute Physiology Score, ICU intensive care unit, aPTT activated partial thrombin time
  2. aExpressed as a percentage of the normal value