7. Causes
• Ischemia - Ischemic ATI
• Intrarenal blood vessels
• Decreased effective circulating blood volume
• Direct toxic injury to the tubules - Nephrotoxic ATI
• Endogenous agents
• Myoglobin
• Hemoglobin
• Monoclonal light chains
• Bile/bilirubin
• Exogenous agents
• Drugs
• Radiocontrast dyes
• Heavy metals
• Organic solvents
8. Pathogenesis
• Tubular injury
Loss of cell polarity
Abnormal ion transport
Increased Na delivery to distal tubules
Tubuloglomerular feedback
vasoconstriction
Decreased GFR
Luminal
Obstruction
14. Pyelonephritis & UTI
• Most common
• Types
• Acute
• Chronic
• Common in females
• Shorter urethra
• No prostatic fluid
• Hormonal changes
• Urethra trauma during
Intercourse
33. Renal Artery stenosis – Clinical features
• Hypertension
• Bruit on auscultating affected kidneys
• Elevated plasma/ renal vein renin
• Arteriography to localise site of occlusion Curable by
surgery