SUDDEN LOSS OF KIDNEY FUNCTION

Acute Kidney Injury

Q: Can the kidneys recover from acute kidney injury?

Yes, many cases of AKI are reversible with prompt treatment of the underlying cause. However, severe or untreated AKI can result in lasting kidney damage or progression to chronic kidney disease, particularly in elderly patients or those with pre-existing kidney issues.

Q: When is dialysis needed in acute kidney injury?

Dialysis is considered for severe AKI with very high potassium, severe fluid overload not responding to medication, severe acidosis, or uraemic complications such as encephalopathy. The decision is individualised under specialist care.

Q: How can acute kidney injury be prevented?

Adequate hydration, careful use of medications that can affect the kidneys (including over-the-counter anti-inflammatory medications), good management of underlying conditions such as diabetes and heart failure, and prompt treatment of infections all reduce the risk of AKI.

A sudden loss of kidney function over hours or days, often due to dehydration, infections, medications or critical illness. Reversible in many cases with prompt treatment of the cause.

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Acute kidney injury (AKI) evaluation and care in Hyderabad

Sudden Onset OVER HOURS TO DAYS

Often Reversible WITH PROMPT CARE

Urgent Workup ESSENTIAL

ABOUT THIS CONDITION

What is Acute Kidney Injury

Acute kidney injury (AKI), previously called acute renal failure, is a sudden loss of kidney function that develops over hours to days. It is detected by a rapid rise in blood creatinine, a fall in urine output, or both. Causes are broadly grouped into pre-renal (reduced blood flow to the kidneys due to dehydration, blood loss, heart failure or low blood pressure), intrinsic renal (direct kidney damage from infections, certain medications, toxins, or kidney diseases) and post-renal (obstruction of urine flow due to stones, prostate enlargement or tumours). Typical features include reduced urine output, swelling of the legs or around the eyes, tiredness, nausea, confusion in severe cases, and abnormalities on blood tests including elevated creatinine, urea and potassium. AKI is a medical emergency requiring urgent evaluation. Many cases are reversible if the underlying cause is identified and treated promptly, but severe or untreated AKI can lead to lasting kidney damage or progress to chronic kidney disease. Dr. Patnam Pravallika Reddy provides urgent evaluation and management, with nephrology co-management for severe cases, at Lux Hospitals, Hyderabad.

SIGNS TO WATCH

Common Symptoms

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Symptoms that need attention

Reduced urine output, sometimes no urine at all Swelling of the legs, ankles or around the eyes Tiredness and weakness Nausea and loss of appetite Shortness of breath in severe cases Confusion or drowsiness in severe AKI Symptoms of the underlying cause — fever, bleeding, urinary symptoms

WHY IT HAPPENS

Causes & Risk Factors

Dehydration, blood loss or low blood pressure
Severe infections such as sepsis
Heart failure and shock
Medications affecting the kidneys
Contrast agents used in scans
Kidney stones or urinary obstruction
Specific kidney diseases such as glomerulonephritis

CLINICAL DETAILS

KeyFacts

Diagnosis

Blood tests for creatinine and urea, urine tests, ultrasound and clinical assessment

Stages

AKI stages 1, 2 and 3 — based on creatinine rise and urine output

Treatment

Identifying and treating the cause, fluid management and dialysis in selected cases

Reversibility

Many cases are reversible with prompt treatment

Prevention

Adequate hydration, careful medication use and management of underlying conditions

Hospital

Available at Lux Hospitals, Hyderabad — inpatient and ICU care

HOW WE TREAT IT

Treatment Approach

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Urgent Cause Treatment with Kidney Support

The most effective approach is urgent identification and treatment of the underlying cause — restoring hydration, treating infection, removing nephrotoxic medications, relieving obstruction — combined with careful fluid and electrolyte management and dialysis when needed.

1

Consultation & Assessment

Dr. Pravallika reviews the situation, examines the patient, arranges urgent blood and urine tests and ultrasound and identifies the likely cause.
2

Treatment Planning

An urgent plan is created to treat the cause, manage fluids and electrolytes and decide whether dialysis is needed.
3

Medical Management

Treatment of underlying cause, hydration or diuretic therapy, electrolyte correction, withdrawal of nephrotoxic medications and dialysis when indicated.
4

Recovery & Follow-up

Follow-up to monitor kidney recovery, manage residual issues and prevent recurrence through education and risk-factor control.

AVAILABLE TREATMENTS

Treatment Options

Identifying and Treating the Underlying Cause

Restoring blood flow with hydration, treating infections, removing kidney-affecting medications and relieving obstruction are the cornerstones of AKI management.

Fluid and Electrolyte Management

Careful intravenous fluid and electrolyte management restores volume status and corrects abnormalities such as high potassium.

Withdrawal of Nephrotoxic Medications

Identifying and stopping medications that are damaging the kidneys is a critical step in recovery.

Dialysis in Severe AKI (Referral for nephrology)

Severe AKI with high potassium, fluid overload, severe acidosis or uraemic symptoms is treated with dialysis under specialist care.

Treatment of Underlying Medical Conditions

Optimising management of heart failure, sepsis, diabetes and other underlying conditions supports kidney recovery.

COMMON QUESTIONS

Frequently Asked Questions

Can the kidneys recover from acute kidney injury?+

When is dialysis needed in acute kidney injury?+

How can acute kidney injury be prevented?+

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