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[Changes in serum and urinary magnesium during and after extracorporeal circulation in cardiac surgery in children]
Insights
Magnesium supplementation during pediatric open-heart surgery reduces hypomagnesaemia duration after extracorporeal circulation (ECC). This intervention also helps maintain higher blood phosphate levels in children undergoing cardiac procedures.
Area of Science:
- Cardiovascular Surgery
- Pediatric Cardiology
- Electrolyte Physiology
Context:
- Extracorporeal circulation (ECC) during pediatric open-heart surgery often leads to electrolyte imbalances, particularly hypomagnesaemia.
- Magnesium is crucial for myocardial function, making its depletion a concern in cardiac procedures.
Purpose:
- To investigate the effect of magnesium supplementation during extracorporeal circulation (ECC) on electrolyte disturbances in children undergoing open-heart surgery.
- To compare outcomes between children receiving standard ECC and those receiving ECC with magnesium-enriched filling solutions.
Summary:
- A study compared two groups of children undergoing open-heart surgery: one with standard ECC and another with magnesium added to the ECC filling solution.
- Both groups experienced hypomagnesaemia post-surgery, but magnesium supplementation significantly shortened its duration.
- Children receiving magnesium also maintained significantly higher blood phosphate levels compared to the control group.
Impact:
- Magnesium supplementation appears to mitigate hypomagnesaemia following ECC in pediatric cardiac surgery.
- The findings suggest a potential strategy to improve electrolyte balance and possibly cardiac function in pediatric surgical patients.
- This research highlights the importance of magnesium management in the context of cardiopulmonary bypass and pediatric cardiovascular interventions.
Abstract:
Magnesium plays an essential role in the processes of myocardial contraction and conduction. In cardiovascular surgery, extracorporeal circulation (ECC) in haemodilution results in various electrolyte distrubances, with invariably hypomagnesaemia. A group of 13 children undergoing open heart surgery was compared with a group of 17 children operated upon under the same conditions but with the addition of magnesium to the filling solution for the extracorporeal circulation. Changes in blood and urinary electrolytes during and after ECC were studied. Hypomagnesaemia was seen in both groups after surgery but the provision of magnesium supplements shortened the duration. In addition, blood phosphate levels remained significantly higher in the group receiving magnesium. The significance of these various findings is discussed and a technique for the provision of magnesium supplements is proposed.