Haemolysis during cardiopulmonary bypass: how to reduce the free haemoglobin by managing the suctioned blood separately

Pierangeli, A.; Masieri, V.; Bruzzi, F.; de Toni, E.; Grillone, G.; Boni, P.; Delnevo, A.
November 2001
Perfusion;Nov2001, Vol. 16 Issue 6, p519
Academic Journal
During cardiopulmonary bypass (CPB) the collection of the patient's blood from the operating area is of fundamental importance. This blood is collected in the cardiotomy reservoir using field suckers and can be managed in different ways. It can be filtered in the cardiotomy reservoir and redirected to the venous reservoir, then oxygenated and returned to the patient, or it can be managed separately: collected in the cardiotomy reservoir, treated at the end of the operation and only after this, returned to the patient. The aim of this study is to determine in vivo the effect of a separate management of the suction blood from the operative field, using the Avant D903 oxygenator (Dideco, Mirandola, Italy). Twenty-one patients undergoing coronary artery bypass graft surgery with CPB were selected and put into two groups at random. In the control group (n = 10) the suction blood in the cardiotomy reservoir was filtered and immediately redirected into the venous reservoir, oxygenated and returned to the patient. In the study group (n = 11) the suctioned blood was collected in the D903 Avant's (Dideco) cardiotomy reservoir and returned to the patient only after having been washed at the end of the operation, using a Compact Advanced (Dideco), as required. Clinical data demonstrated that while in the study group it was possible to keep the free plasma haemoglobin (FPH) concentrations the same as at the beginning, in the control group there was a significant increase in FPH from 5.063.5 mg/dl (baseline) to 37616.7 mg/dl (120 min after CPB).


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