Management of Critically Ill Children with Diabetic Ketoacidosis and Multi-Organ Dysfunction

Introduction to Fluid Management

The American Academy of Pediatrics and other critical care guidelines recommend initiating continuous renal replacement therapy (CRRT) urgently as second-line therapy for fluid removal in children with established severe fluid overload and worsening acute kidney injury, as seen in this patient with a positive balance >4 liters over 2 days and creatinine 0.7→1.4 1, 2
The Society of Critical Care Medicine suggests that a cumulative positive balance of approximately 3.6 liters over 2 days indicates significant fluid overload, which is associated with increased mortality and prolonged mechanical ventilation in critically ill children 3, 4

The International Consensus Conference on Pediatric Critical Care recommends calculating the percentage fluid overload, which in this case is ~22.5% of body weight, indicating severe fluid overload 3
Clinical manifestations such as ascites, pleural effusion, and the need for mechanical ventilation with PEEP 7 and inotropes suggest severe fluid overload and multi-organ dysfunction 1, 3

The European Society of Pediatric Nephrology recommends using standard-volume hemofiltration, not high-volume, as it shows no mortality benefit and increases hyperglycemia risk 2
The target net negative fluid balance should aim to reduce fluid overload to <10% body weight 5

The American College of Critical Care Medicine suggests restricting maintenance fluids to 50-60% of calculated volume in children with renal failure and established fluid overload, which for a 16 kg child would be 650-780 mL/day 3, 6, 5
The use of isotonic balanced solutions (Lactated Ringer's or Plasma-Lyte) as base, with added glucose to prevent hypoglycemia, and adjusting potassium based on frequent monitoring is recommended 3, 6, 5

The Society of Critical Care Medicine recommends transfusing packed red blood cells if the hemoglobin level is <10 g/dL during shock resuscitation, and considering platelet transfusion if <50,000/μL with active bleeding or <10,000-20,000/μL prophylactically 4

The American Heart Association recommends continuing current inotropic support and titrating epinephrine or norepinephrine as needed, with consideration of hydrocortisone for catecholamine-resistant shock and suspected adrenal insufficiency 4

The Pediatric Critical Care Medicine society suggests mandatory daily assessments, including strict intake/output recording, daily weights, fluid balance calculation, and monitoring of electrolytes, renal function, and complete blood count 3, 6, 5
Common pitfalls to avoid include continuing aggressive fluid administration, attempting diuresis in oliguric AKI, and ignoring all fluid sources in daily balance, which can worsen outcomes 1, 2, 3, 7

The American Academy of Pediatrics and Critical Care Medicine recommend monitoring central venous pressure (CVP) response to fluid administration, as an increasing CVP with reduced MAP-CVP gradient indicates excessive fluid has been given and overload is developing 8, 9, 10, 11
Clinical signs indicating fluid overload requiring intervention include hepatomegaly, rales/crackles on lung examination, increased work of breathing, and hypoxemia from pulmonary edema, particularly in patients on ECMO therapy 8, 12

The Society of Critical Care Medicine recommends initiating diuretics as first-line pharmacologic therapy for patients developing signs and symptoms of fluid overload, with a strength of evidence based on expert opinion 8, 9, 10, 11
The American College of Critical Care Medicine suggests considering peritoneal dialysis as an alternative to CRRT, particularly in resource-limited settings or when CRRT is unavailable, with moderate-quality evidence 8, 13

The American Thoracic Society recommends that mechanical ventilation may be required when fluid overload causes respiratory compromise, with positive pressure ventilation providing hemodynamic benefits by reducing left ventricular afterload and unloading work of breathing 8, 12, 11

The Pediatric Critical Care Society states that large volumes of fluid for acute stabilization have not been shown to increase incidence of ARDS or cerebral edema in children, but proactive fluid restriction and removal strategies should be implemented after initial resuscitation to prevent cumulative positive fluid balance 8, 9, 10, 13