Metabolic acidosis
Metabolic acidosis The “secrets” of metabolic acidosis will be the emphasis of this chapter, given the breadth of this topic. This chapter is parsed into, first, a brief overview of…
Metabolic alkalosis
Introduction and physiology 1. What is metabolic alkalosis? The metabolic alkaloses represent a heterogeneous group of disorders that have in common a high concentration of plasma bicarbonate [HCO 3 −…
Disorders of magnesium metabolism
Normal magnesium physiology 1. How is magnesium measured? The molecular weight of magnesium is 24.3 g/mol, with a 2+ valence (Mg2+). The normal serum magnesium level is 0.7 to 0.85…
Palliative care in nephrology
Overview of palliative care and role in nephrology care 1. What is palliative care? Palliative care is specialized care that treats the symptoms and burdens associated with serious illness. Palliative…
Disorders of phosphorus metabolism
Normal phosphorus physiology 1. What is the difference between phosphate and phosphorus and how are they measured in clinical medicine? Phosphorus is a critical element in physiology. Phosphorus is an…
Hypocalcemia and hypercalcemia
1. What is calcium homeostasis? Calcium homeostasis refers to the regulation of the calcium concentration in the extracellular fluid. Normal serum calcium concentration varies between laboratories, but is usually 8.5…
Dysnatremias
1. What are dysnatremias? The term dysnatremia applies when an aberration in plasma sodium concentration is present. Changes in plasma sodium concentration can result in fluid shifts between the intra-…
Hypokalemia and hyperkalemia
1. Describe normal potassium balance. Approximately 98% of total body potassium resides inside cells, making it the most abundant cation in the intracellular fluid (ICF). The total body stores approximately…
Genetic disorders of sodium transport
1. What is the difference between mendelian (or monogenic) forms of hypertension and essential hypertension? Essential hypertension has a multifactorial etiology, including demographic and environmental (dietary) factors, and genetic predisposition,…
Other forms of secondary hypertension
1. Besides renovascular and the traditional endocrine causes of hypertension, what are eight uncommon, but important, causes of secondary hypertension? • Obstructive sleep apnea (typically causing hyperaldosteronism) • Drug-induced hypertension…
