Intensive Care Medicine

, Volume 29, Issue 8, pp 1279–1285 | Cite as

Effect of cardiopulmonary bypass on lactate metabolism

  • Iqbal Mustafa
  • Hubert Roth
  • Asikin Hanafiah
  • Tarmizi Hakim
  • Maizul Anwar
  • Erwin Siregar
  • Xavier M. Leverve



We have investigated the role of cardiopulmonary bypass on lactate metabolism in patients undergoing uncomplicated surgery for elective coronary artery bypass grafting (CABG).


Prospective non-randomized observational study.


National Cardiovascular Center.


Three independent groups were studied: preoperative (n=20), postoperative with bypass (CPB, n=20) and postoperative without bypass (NO-CPB, n=20).


Lactate metabolism was investigated with the use of an exogenous lactate challenge test (2.5 mmol Na-lactate/kg body weight in 15 min). Blood lactate was sequentially determined after the end of infusion. Lactate clearance and endogenous production were estimated from the area under the curve, and a bi-exponential fitting permitted modeling the lactate-decay into two compartments.

Measurements and main results

Lactate metabolism parameters (basal lactate, clearance, endogenous production and half-lives [HL] I and II) were not different between the NO-CPB and preoperative groups. In the CPB group, as compared to the other two groups, basal lactate and endogenous production were not significantly affected while lactate clearance (CPB: 6.02±0.97 versus preoperative: 9.41±0.93 and NO-CPB: 9.6±0.8 ml/kg per min) and HL-I (CPB: 10.6±1.4 versus preoperative: 17.2±2.3 and NO-CPB: 18.8±2.5 min) were decreased (p<0.001) and HL-II was increased (CPB: 171±41versus preoperative: 73±12 and NO-CPB: 48±2.9 min, p<0.01).


While surgery and anesthesia per se do not seem to alter lactate metabolism, CPB significantly decreased lactate clearance, this effect being possibly related to a mild liver dysfunction even in uncomplicated elective surgery.


Lactate endogenous production Lactate clearance Liver function Modeling Beating heart surgery 



The authors are indebted to Professor Bambang Sutrisna from the Department of Epidemiology, Faculty of Public Health, University of Indonesia, Jakarta, Indonesia, for helpful discussions regarding the statistical evaluation of this work. Dr Christiane Keriel is acknowledged for help in correcting this manuscript.


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Copyright information

© Springer-Verlag 2003

Authors and Affiliations

  • Iqbal Mustafa
    • 1
  • Hubert Roth
    • 2
  • Asikin Hanafiah
    • 3
  • Tarmizi Hakim
    • 4
  • Maizul Anwar
    • 4
  • Erwin Siregar
    • 5
  • Xavier M. Leverve
    • 2
  1. 1.Intensive Care UnitHarapan Kita National Cardiovascular CenterJakartaIndonesia
  2. 2.INSERM-E0221 Bioénergétique Fondamentale et AppliquéeUniversité Joseph Fourier et Département de Médecine Aiguë Spécialisée, Centre Hospitalier Universitaire de Grenoble GrenobleFrance
  3. 3.Department of CardiologyHarapan Kita National Cardiovascular CenterJakartaIndonesia
  4. 4.Department of Cardiothoracic SurgeryHarapan Kita National Cardiovascular CenterJakarta Indonesia
  5. 5.Department of AnesthesiologyHarapan Kita National Cardiovascular CenterJakartaIndonesia

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