In a dialysis patient with chills, is hydrocortisone indicated and what is the appropriate paracetamol dose for renal impairment?

Hydrocortisone is NOT indicated for routine management of chills in dialysis patients; paracetamol should be dosed at 300-600 mg every 8-12 hours (not every 4 hours) in patients with renal impairment.

Hydrocortisone Use in Dialysis Patients with Chills

Hydrocortisone has no role in treating simple chills during dialysis. The evidence for hydrocortisone in dialysis patients is limited to two specific scenarios:

When Hydrocortisone IS Indicated:

• Intradialytic hypotension (IDH): One preliminary study found that stress-dose hydrocortisone (100 mg IV) given prior to hemodialysis reduced hypotensive episodes in patients with recurrent IDH 1. However, this remains investigational and should only be considered after ruling out adrenal insufficiency.
• Septic shock: If the patient has septic shock with hemodynamic instability despite adequate fluid resuscitation and vasopressors, hydrocortisone 200 mg/day IV (continuous infusion preferred) may be considered 2, 3, 4. This is NOT indicated for sepsis without shock 2, 3.

When Hydrocortisone is NOT Indicated:

• Simple chills without hemodynamic instability
• Fever alone
• Routine dialysis sessions
• Mild inflammatory responses

The key distinction: Chills during dialysis are common and typically benign, often related to temperature fluctuations or mild inflammatory responses to the dialysis membrane. These do not warrant corticosteroid therapy.

Paracetamol Dosing in Dialysis Patients

For dialysis patients with chills or fever, paracetamol is the appropriate first-line treatment, but requires dose adjustment.

Correct Dosing:

According to the dental implant guideline for dialysis patients, paracetamol dosing should be 5:

• 300-600 mg per dose
• Dosing interval: every 8-12 hours (NOT every 4 hours as in patients with normal renal function)
• This represents both dose reduction AND interval prolongation

Rationale for Dose Adjustment:

• Paracetamol itself is not significantly accumulated in renal failure 6, 7
• However, the glucuronide and sulphate conjugates accumulate significantly in dialysis patients 6, 7
• While these conjugates reached steady-state concentrations lower than predicted in one study 7, dose adjustment remains prudent to avoid potential toxicity
• Paracetamol is effectively removed by hemodialysis but NOT by peritoneal dialysis 6

Safety Considerations:

• Paracetamol remains a suitable first-line analgesic for patients with renal impairment when dosed appropriately 8
• Hepatotoxicity is rare when used as directed, even in patients with underlying liver disease 8
• No evidence supports concerns about cardiovascular or gastrointestinal toxicity with short-term use (<14 days) 8

Clinical Algorithm for Chills in Dialysis Patients

1. Assess hemodynamic stability:

   • Stable blood pressure → Paracetamol 300-600 mg every 8-12 hours
   • Recurrent intradialytic hypotension → Consider investigating for adrenal insufficiency; hydrocortisone may be considered after endocrine consultation 1
   • Septic shock → Hydrocortisone 200 mg/day IV if vasopressors required 2, 3

2. Rule out infection: If fever accompanies chills, investigate for dialysis catheter infection or other sources requiring antibiotics 5

3. Avoid routine corticosteroids: Do not use hydrocortisone for simple chills or fever without shock 2, 3

Common Pitfalls to Avoid

• Do not use standard paracetamol dosing (1000 mg every 4-6 hours) in dialysis patients—this risks accumulation of toxic metabolites
• Do not prescribe hydrocortisone for simple chills—this exposes patients to unnecessary immunosuppression and metabolic complications
• Do not assume paracetamol is dialyzed away—peritoneal dialysis does NOT effectively remove paracetamol, only hemodialysis does 6
• Do not use saliva paracetamol concentrations for monitoring in dialysis patients—correlation with plasma levels is poor 6