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Microfluidics in Assessing Platelet Function
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Platelet count and function in paediatric cardiac surgery: a prospective observational study.

B S Romlin1, F Söderlund2, H Wåhlander3

  • 1Department of Paediatric Anaesthesia and Intensive Care and birgitta.romlin@vgregion.se.

British Journal of Anaesthesia
|July 12, 2014
PubMed
Summary

Platelet count and function significantly decrease during pediatric cardiac surgery, with impaired function linked to higher transfusion needs. Platelet aggregation recovers faster than count post-operation.

Keywords:
blood, plateletscomplications, haemorrhageheart, congenital defectssurgery, cardiovasculartransfusion

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Area of Science:

  • Cardiovascular Surgery
  • Hematology
  • Pediatric Critical Care

Background:

  • Platelet abnormalities increase bleeding risk in patients.
  • Pediatric cardiac surgery presents unique challenges for platelet function.
  • Understanding platelet behavior is crucial for managing surgical complications.

Purpose of the Study:

  • To evaluate platelet count and function during and after pediatric cardiac surgery.
  • To investigate the impact of modified ultrafiltration on platelet parameters.
  • To identify factors influencing platelet dysfunction and its association with transfusion needs.

Main Methods:

  • Prospective observational study of 57 pediatric patients undergoing cardiac surgery.
  • Analysis of platelet count and function (multiple-electrode impedance aggregometry) at multiple time points.
  • Registration of intraoperative blood product transfusions.

Main Results:

  • Platelet count and aggregation significantly reduced during cardiopulmonary bypass (CPB), with greatest reduction at CPB's end.
  • Postoperative day 1 showed a 50% reduction in platelet count, while aggregation returned to baseline.
  • Impaired platelet function during CPB correlated with increased intraoperative transfusion requirements.

Conclusions:

  • Platelet count and aggregation are markedly reduced during and after pediatric cardiac surgery, particularly in neonates.
  • Platelet aggregation recovery is faster than platelet count recovery.
  • Intraoperative platelet dysfunction is a significant predictor of increased transfusion requirements.