OBJECTIVE: To investigate granulocyte activation, as well as hypoxanthine and free radical production in children during the first day after cardiopulmonary bypass. DESIGN: A prospective study of pediatric patients undergoing either cardiac surgery with a cardiopulmonary bypass or thoracotomy and extracardiac vascular surgery not requiring a cardiopulmonary bypass. SETTING: Operative and intensive care units, Children's Hospital, University of Helsinki, Finland. PATIENTS: Seven consecutive patients undergoing elective correction of a ventricular septal defect and six patients undergoing extracardiac surgery for ligation of a patent ductus arteriosus or repair a coarctation of the aorta. MEASUREMENTS AND MAIN RESULTS: Plasma concentrations of myeloperoxidase (140-334 micrograms/l preoperatively, 460-1692 micrograms/l at 0.2 h after declamping, 471-1386 micrograms/l at 0.5 h after declamping) and lactoferrin (77-258 micrograms/l preoperatively, 533-1783 at 0.2 h, 404-1482 micrograms/l at 0.5 h) as markers of granulocyte activation, and hypoxanthine (0-5.7 mumol/l preoperatively, 4.3-17.0 mumol/l at 0.2 h, 6.5-17.9 mumol/l at 0.5 h) increased in a biphasic manner at 0.2-0.5 h and 6-10 h postoperatively (all p < 0.05). Expired ethane, as an index of free radical activity, increased at 10 h postoperatively (36-119 pmol/kg per min preoperatively, 72-152 pmol/kg per min, p < 0.005). CONCLUSION: Granulocyte activation, and hypoxanthine and free radical production occur at least 10 h after cardiopulmonary bypass. In children undergoing open heart surgery, attempts to reduce free radical activity should be extended to the postoperative period.
OBJECTIVE: To investigate granulocyte activation, as well as hypoxanthine and free radical production in children during the first day after cardiopulmonary bypass. DESIGN: A prospective study of pediatric patients undergoing either cardiac surgery with a cardiopulmonary bypass or thoracotomy and extracardiac vascular surgery not requiring a cardiopulmonary bypass. SETTING: Operative and intensive care units, Children's Hospital, University of Helsinki, Finland. PATIENTS: Seven consecutive patients undergoing elective correction of a ventricular septal defect and six patients undergoing extracardiac surgery for ligation of a patent ductus arteriosus or repair a coarctation of the aorta. MEASUREMENTS AND MAIN RESULTS: Plasma concentrations of myeloperoxidase (140-334 micrograms/l preoperatively, 460-1692 micrograms/l at 0.2 h after declamping, 471-1386 micrograms/l at 0.5 h after declamping) and lactoferrin (77-258 micrograms/l preoperatively, 533-1783 at 0.2 h, 404-1482 micrograms/l at 0.5 h) as markers of granulocyte activation, and hypoxanthine (0-5.7 mumol/l preoperatively, 4.3-17.0 mumol/l at 0.2 h, 6.5-17.9 mumol/l at 0.5 h) increased in a biphasic manner at 0.2-0.5 h and 6-10 h postoperatively (all p < 0.05). Expired ethane, as an index of free radical activity, increased at 10 h postoperatively (36-119 pmol/kg per min preoperatively, 72-152 pmol/kg per min, p < 0.005). CONCLUSION: Granulocyte activation, and hypoxanthine and free radical production occur at least 10 h after cardiopulmonary bypass. In children undergoing open heart surgery, attempts to reduce free radical activity should be extended to the postoperative period.
Authors: N C Cavarocchi; M D England; J F O'Brien; E Solis; P Russo; H V Schaff; T A Orszulak; J R Pluth; M P Kaye Journal: J Surg Res Date: 1986-06 Impact factor: 2.192
Authors: C E Cross; B Halliwell; E T Borish; W A Pryor; B N Ames; R L Saul; J M McCord; D Harman Journal: Ann Intern Med Date: 1987-10 Impact factor: 25.391
Authors: F A Burrows; W G Williams; K H Teoh; A E Wood; J Burns; J Edmonds; G A Barker; G A Trusler; R D Weisel Journal: J Thorac Cardiovasc Surg Date: 1988-10 Impact factor: 5.209