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Modified ultrafiltration in paediatric cardiac surgery

Department of Anaesthesia, Aarhus University Hospital, Aarhus

Jens Pedersen

Department of Anaesthesia, Aarhus University Hospital, Aarhus

Kirsten Hjortholm

Department of Anaesthesia, Aarhus University Hospital, Aarhus

Ole K Hansen

Department of Thoracic and Cardiovascular Surgery, Aarhus University Hospital, Aarhus

Emmy Ditlevsen

Department of Thoracic and Cardiovascular Surgery, Aarhus University Hospital, Aarhus

The effect of modified ultrafiltration (MUF) after cardiopulmonary bypass for paediatric cardiac surgery was evaluated in 138 children with moderate to severe congenital heart disease. The median age was 0.4 years (0 days to 6.5 years), and the weight 5.3 kg (2.2-20 kg). The operation was discontinued in six cases, three because of technical problems and three because of unstable circulation. One-hundred-and-thirty-four patients were ultrafiltrated for a median of 12 min (2-27 min) with an ultrafiltrate of median 44 ml/kg (6-118 ml/kg). Haematocrit was significantly increased from 28% (20-39%) to 36% (26-51%) and systolic arterial pressure from 56 mmHg (30-85 mmHg) to 74.0 mmHg (32-118 mmHg). Furthermore arterial oxygenation was significantly increased from 30.8 kPa (4.8-70.4 kPa) to 34.1 kPa (4.9-80.6 kPa), and arterial carbon dioxide tension from 4.8 kPa (3.1-7.3 kPa) to 5.1 kPa (3.1-7.6 kPa). Heart rate was significantly reduced from 145 beats/min (92-201 beats/min) to 136 beats/min (88-200 beats/min). There were no significant differences in central venous pressure, left atrial pressure and base excess before and after MUF.

MUF increases systolic blood pressure, haematocrit, arterial oxygen and carbon dioxide tension coming off bypass in paediatric cardiac surgery and reduces heart rate and postoperative fluid overload.

Perfusion, Vol. 13, No. 2, 105-109 (1998)
DOI: 10.1177/026765919801300205


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