Fig. 1.
Schematic representation of extracorporeal circuit. Membrane lung (ML), hemofilter (HF), and peristaltic pump (PP). 1–4 = circuit blood withdrawal sites: (1) inlet, (2) postrecirculation, (3) post-ML, and (4) outlet. 5–6 = ultrafiltrate withdrawal sites: (5) pre-acid, (6) post-acid. Flowmeter was positioned on the blood line after the outlet (4) withdrawal site.