Renal Tubular Acidosis

Hyperchloremic metabolic acidosis caused by dysfunction of renal tubular acid-base regulation.

Written by: Saygı Hospital Health Guide Editorial Board

Last updated: June 11, 2026

This content has been compiled by the Saygı Hospital Health Guide Editorial Board and is periodically reviewed by a specialist physician.

References (5)

This content is for informational purposes only and does not constitute medical advice. You can book an appointment at our Dahiliye (İç Hastalıkları) department. Book Appointment →

What is Renal Tubular Acidosis?

Renal tubular acidosis (RTA) is a hyperchloremic metabolic acidosis caused by impaired renal tubular regulation of acid-base balance. Glomerular filtration rate is usually preserved; the abnormality lies in tubular function.

Type 1 (distal RTA) reflects impaired hydrogen ion secretion, Type 2 (proximal RTA) results from defective bicarbonate reabsorption, and Type 4 (hyperkalemic RTA) is associated with aldosterone deficiency or resistance. Each type has distinct etiologies and treatment approaches.

Growth retardation in children, bone disease and kidney stones in adults are the most common clinical consequences. Identifying the underlying cause and instituting appropriate alkali therapy can prevent complications.

Symptoms

Muscle weakness and fatigue

Bone pain (osteomalacia)

Recurrent kidney stones (Type 1)

Growth retardation in children

Polyuria and polydipsia

Nausea and loss of appetite

Risk Factors

Sjogren syndrome and other autoimmune diseases

Chronic kidney disease

Certain medications (amphotericin B, lithium, ifosfamide)

Genetic predisposition

Obstructive uropathy

When to See a Doctor?

If you experience any of the following symptoms, seek medical attention promptly:

Recurrent kidney stones
Unexplained muscle weakness and bone pain
Metabolic acidosis on blood gas analysis
Growth retardation noticed in children

Treatment Methods

Alkali therapy with oral sodium bicarbonate or citrate solutions

Potassium replacement (in Type 1 and Type 2)

Fludrocortisone (Type 4 — for aldosterone deficiency)

Treatment of the underlying cause

Regular monitoring of electrolytes and renal function

Which Department to Visit?

You can visit our Dahiliye (İç Hastalıkları) department for these complaints. Our specialist physicians will create the most suitable treatment plan for you.

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Health Disclaimer: The information on this page is prepared for general informational purposes only. It does not replace medical diagnosis and treatment. Please consult your physician for your complaints. Saygı Hospital does not accept responsibility for actions taken based on the information on this page.