I. Introduction
II. Definition and Etiology of Hyponatremia
1. Classification of Hyponatremia
2. Acute and Chronic Hyponatremia
III. Body Fluid Compartments and Regulation of Sodium
IV. Common Causes of Hyponatremia
1. Contributing Factors
2. Low Volume Hyponatremia
3. High Volume Hyponatremia
V. Symptoms of Hyponatremia
VI. Diagnosis of Hyponatremia
1. False Hyponatremia
2. Diagnostic Criteria for SIADH
3. Differentiating Causes of Hypotonic Hyponatremia
4. Hypotonic and Non-hypotonic Hyponatremia
5. Clinical Assessment of Fluid Status
6. Other Laboratory Tests
7. Diuretics and Diagnosis
VII. Case Study: Euvolemic Hyponatremia
VIII. Summary