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Table 1 Effect of critical illness and extracorporeal membrane oxygenation (ECMO) on pharmacokinetics (PK) of drugs, based on degree of lipophilicity

From: Medicating patients during extracorporeal membrane oxygenation: the evidence is building

 

Hydrophilic drugs

Lipophilic drugs

Volume of distribution (Vd)

Low

High

Primary mode of clearance

Renal

Hepatic

Log P

Low

High

Potential effect of critical illness on PK

Increased Vd

No change in Vd

Effect of ECMO on PK

Increased Vd

Increased Vd

No change in clearance

Increased clearance

  1. Log P: octanol‐water partition coefficient (measure of drug’s lipophilicity)