Cardiac arrhythmias may develop during induction (particularly tachycardia), maintenance (particularly bradycardia), and rewarming as a result of electrolyte imbalances.33 Hypothermia induction causes a transient increase in the glomerular filtration rate, resulting in diuresis, which reduces serum phosphate and magnesium levels while shifting potassium into the cellular space, thereby lowering plasma volumes and producing hypokalemia. Rewarming shifts potassium from the cellular to the extracellular space, potentially producing hyperkalemia. For these reasons, potassium levels should be monitored every four to six hours, and magnesium and phosphate levels as clinically indicated. To reduce rapid shifts in electrolyte levels, patients should be rewarmed at a slow, controlled pace. - See more at: http://www.nursingcenter.com/lnc/CEArticle?an=00000446-201207000-00024&Journal_ID=54030&Issue_ID=1367806#sthash.Vi0Q8jVD.dpuf
Cardiac arrhythmias may develop during induction (particularly tachycardia), maintenance (particularly bradycardia), and rewarming as a result of electrolyte imbalances.33 Hypothermia induction causes a transient increase in the glomerular filtration rate, resulting in diuresis, which reduces serum phosphate and magnesium levels while shifting potassium into the cellular space, thereby lowering plasma volumes and producing hypokalemia. Rewarming shifts potassium from the cellular to the extracellular space, potentially producing hyperkalemia. For these reasons, potassium levels should be monitored every four to six hours, and magnesium and phosphate levels as clinically indicated. To reduce rapid shifts in electrolyte levels, patients should be rewarmed at a slow, controlled pace. - See more at: http://www.nursingcenter.com/lnc/CEArticle?an=00000446-201207000-00024&Journal_ID=54030&Issue_ID=1367806#sthash.Vi0Q8jVD.dpuf
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