Orris

Fluid and electrolyte imbalance management after major surgery Make 20 mark answer for ENT university exam make pdf

Reading File
Finding Sources
Finding Sources
Finding Sources
Reading File
Reading File
Reading File
Reading File
Reading File
Reading File
Reading File
Reading File
Running Command
Running Command
Running Command
Your PDF is ready. Here's the complete answer summary and download link:

Fluid Electrolyte Postoperative 20marks

PDF Document · PDF

What's Covered in This 20-Mark Answer

The PDF is a fully structured, exam-ready answer sourced from Schwartz's Principles of Surgery (11th ed.), Berek & Novak's Gynecology, and Cummings Otolaryngology. Here's a content overview:

1. Introduction (2 marks)

The surgical stress response - ADH and aldosterone surge, third-space sequestration, and why fluid management is central to postoperative care.

2. Body Fluid Compartments & Physiology (2 marks)

  • TBW = 60% body weight; ICF (40%) vs ECF (20%)
  • Normal daily fluid requirements and losses
  • Table of compartment compositions

3. Clinical & Laboratory Assessment (2 marks)

  • Signs of dehydration vs overhydration
  • BUN:Creatinine ratio, urine osmolarity, serum osmolarity formula: 2[Na⁺] + glucose/18 + BUN/2.8

4. IV Fluid Types, Maintenance & ERAS (3 marks)

  • Table of NS, LR, D5W, 3% saline, colloids - compositions and indications
  • 4-2-1 maintenance rule
  • Table of GI loss replacement fluids (NGT, bile, fistulae)
  • ERAS principles: euvolemia, balanced crystalloids, goal-directed therapy

5. Sodium Disorders (3 marks)

  • Hyponatremia: dilutional vs depletional; treatment ladder including hypertonic saline with warning about osmotic demyelination (≤8-12 mEq/L per 24hr correction)
  • Hypernatremia: free water deficit, slow correction

6. Potassium, Calcium, Magnesium (3 marks)

  • Hypokalemia: stepwise IV/oral replacement; concurrent Mg²⁺ correction
  • Hyperkalemia: calcium gluconate → insulin/dextrose/bicarb → Kayexalate → dialysis
  • Hypocalcemia: critical ENT consideration post-thyroidectomy; Chvostek's/Trousseau's signs; IV calcium gluconate

7. Acid-Base Disorders (2 marks)

  • Table: metabolic acidosis/alkalosis, respiratory acidosis/alkalosis - causes and management
  • Hyperchloremic acidosis from large-volume 0.9% NaCl

8. ENT-Specific Considerations (2 marks)

  • Thyroidectomy: hypocalcemia monitoring and prophylaxis
  • Laryngectomy: prolonged NPO, enteral feeding
  • Skull base surgery: diabetes insipidus - massive polyuria, DDAVP treatment
  • Radical neck dissection: chyle leak losses
  • Paediatric ENT: dehydration risk

9. Monitoring & Complications (1 mark)

  • Monitoring table: urine output, CVP, SVV, daily weight, lactate
  • Complications table: fluid overload, hypovolemia, osmotic demyelination, AKI

Marks Breakdown Table included at the end for easy reference.

This is a shared conversation. Sign in to Orris to start your own chat.