Type IV RTA

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Type 4 Renal Tubular Acidosis  

Title:   

Ñ    Type 4 Renal Tubular Acidosis       

Pathogenesis

Causes 

KUS

Chronic renal disorders such as:

Ñ    Diabetes mellitus

Ñ    Tubulointerstitial disease

Drugs

Ñ    NSAIDs

Ñ    ACE inhibitors

Ñ    Beta-blockers

Ñ    Potassium sparing diuretics

Ñ    Aldosterone antagonists

E&M

Ñ    Addison’s disease gives a similar picture

Pathophysiology

Ñ    Plasma renin and aldosterone low 

Ñ    Do not rise in response to stimulation

Clinical Features

KUS

Ñ    Metabolic acidosis

Investigations

Fluids

Blood

Biochemistry      

Ñ    Acidosis

Ñ    Hyperchloraemia

Ñ    Hyperkalaemia

Management

Control

Drugs

Ñ    Fludrocortisone

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