Proper kidney function is inextricably linked to regulation of blood pressure and fluid-chemical balance. The kidneys serve as the body's primary filtration and regulatory organ for blood pressure control, sodium balance, and essential minerals. At East Tennessee Medical Associates, our nephrologists offer specialized diagnostic workups and targeted medical management for complex hypertension and critical electrolyte disturbances.

Advanced & Resistant Hypertension Management

High blood pressure (hypertension) is both a primary cause and a major consequence of chronic kidney disease. While essential hypertension is common, complex cases often stem from underlying kidney mechanisms or vascular damage. Our practice specializes in diagnosing secondary causes and managing severe, difficult-to-control blood pressure to protect the heart, brain, and kidneys.

• Diagnostic Evaluation for Secondary Hypertension: Comprehensive workups to identify underlying medical causes of high blood pressure, including renovascular hypertension (renal artery stenosis), primary aldosteronism, pheochromocytoma, and kidney parenchymal disease.

• Resistant Hypertension Protocols: Specialized management for patients whose blood pressure remains uncontrolled despite the concurrent use of three or more antihypertensive medications from different drug classes (including a diuretic).

• Target-Organ Protection: Tailored pharmacotherapy designed to reduce intraglomerular pressure, minimize proteinuria (protein in the urine), and slow the progression of cardiovascular and renal damage.

• 24-Hour Ambulatory Blood Pressure Monitoring (ABPM): Assessment of circadian blood pressure patterns, identifying "non-dippers" (patients whose blood pressure fails to drop normally at night) and distinguishing true resistant hypertension from white-coat effects.

• Lifestyle & Volume Optimization: Precise dietary sodium restriction guidance, fluid volume management, and targeted diuretic therapy tailored to the patient’s specific renal filtration capacity.

Electrolyte & Acid-Base Disorders

Electrolytes—including sodium, potassium, calcium, magnesium, and phosphate—are essential minerals that maintain cellular function, nerve conduction, muscle contraction, and fluid balance. The kidneys maintain these minerals within precise physiological limits. When renal function is impaired, dangerous electrolyte imbalances and acid-base disturbances can develop rapidly.

• Dysnatremias (Sodium Imbalances): Diagnostic workup and careful correction of hyponatremia (low blood sodium, including SIADH and volume overload states) and hypernatremia (high blood sodium) to prevent severe neurological complications such as osmotic demyelination syndrome or brain edema.

• Potassium Disorders: Urgent and long-term management of hyperkalemia (elevated potassium), a frequent and potentially life-threatening complication of kidney disease that risks cardiac arrhythmias, alongside evaluation of chronic hypokalemia (low potassium) resulting from renal wasting or diuretic use.

• Calcium, Phosphorus & Mineral Metabolism: Diagnosis and management of complex mineral disorders linked to secondary hyperparathyroidism, chronic kidney disease-mineral bone disorder (CKD-MBD), vascular calcification, hypercalcemia, and hypocalcemia.

• Magnesium & Phosphate Imbalances: Diagnostic evaluation and oral or intravenous repletion/binding protocols for critical disruptions in serum magnesium and phosphorus levels.

• Acid-Base Disturbances: Evaluation and medical management of chronic metabolic acidosis (common in advancing CKD) and metabolic alkalosis, using target bicarbonate therapies to preserve muscle mass, protect bone health, and slow renal decline.