Acute kidney injury, commonly called AKI, is a sudden reduction in kidney function that can develop over a short period. It can happen because of dehydration, severe infection, low blood pressure, certain medicines, urinary obstruction or other serious medical conditions.

Unlike many forms of chronic kidney disease, AKI can sometimes improve significantly when the underlying problem is recognized and treated promptly. However, severe acute kidney injury can become a medical emergency and may require hospital-based monitoring or temporary kidney replacement therapy.

At Prabhakar Bhurke Clinic, Dr. Sandip Prabhakar Bhurke, super specialist nephrologist and transplant physician, provides evaluation and individualized management for patients with acute kidney injury and other kidney disorders.

What is acute kidney injury?

The kidneys normally remove waste products from the blood, regulate fluid levels and help maintain the body's electrolyte and acid-base balance.

During AKI, kidney filtration suddenly decreases. This can result in:

• Rising blood creatinine levels
• Reduced waste removal
• Changes in potassium and other electrolytes
• Fluid accumulation
• Changes in urine production
• Disturbances in acid-base balance

The severity of AKI can vary considerably, so treatment is based on the patient's overall condition rather than one laboratory value alone.

What causes acute kidney injury?

Finding the underlying cause is a major part of acute kidney injury treatment.

Dehydration

Severe vomiting, diarrhea, fever, excessive sweating or inadequate fluid intake can reduce blood flow to the kidneys.

Severe infection

Serious infections can affect blood pressure and circulation and may contribute to sudden kidney dysfunction.

Low blood pressure or blood loss

Major bleeding or conditions that significantly reduce blood circulation can decrease the kidneys' blood supply.

Medicines

Certain medicines can affect kidney function, particularly in people who are dehydrated or already vulnerable to kidney problems.

Medication-related AKI should be evaluated by a doctor rather than managed through self-discontinuation of prescribed medicines.

Urinary blockage

A blockage in the urinary tract can prevent normal urine drainage.

Possible causes include:

• Kidney stones
• Enlarged prostate
• Tumors
• Ureteral obstruction
• Other structural abnormalities

Kidney inflammation

Some immune-related diseases can directly affect the kidney's filtering structures and cause an acute decline in function.

What are the symptoms of acute kidney injury?

AKI does not always produce obvious symptoms during its early stages.

When symptoms occur, they may include:

• Decreased urine production
• Swelling in the legs or ankles
• Facial puffiness
• Fatigue
• Nausea
• Vomiting
• Breathlessness
• Confusion
• Drowsiness
• Changes in blood pressure

The symptoms depend on the severity and cause of the kidney injury.

Can acute kidney injury occur without reduced urine?

Yes.

Some patients develop AKI while continuing to produce a relatively normal amount of urine. This is sometimes referred to as non-oliguric AKI.

Therefore, urine volume alone cannot determine whether the kidneys are functioning normally.

How is acute kidney injury diagnosed?

A doctor usually combines medical history, examination and laboratory results to determine whether AKI is present.

Blood creatinine

A rise in serum creatinine compared with a previous baseline is an important indicator of an acute decline in kidney filtration.

Electrolyte tests

AKI can cause abnormalities involving potassium, sodium, bicarbonate and other substances.

Severe potassium abnormalities can be particularly dangerous.

Urine testing

Urinalysis can provide clues about infection, blood, protein and possible kidney inflammation.

Kidney ultrasound

Ultrasound may be used to assess kidney structure and look for urinary obstruction.

Review of previous reports

Comparing current creatinine and eGFR with previous results can help establish whether kidney dysfunction is new or longstanding.

Additional investigations may be required depending on the suspected cause.

How is acute kidney injury treated?

There is no single medicine that cures every case of AKI. Treatment is directed toward the underlying cause while supporting kidney function and controlling complications.

1. Correcting fluid problems

When AKI is related to dehydration or reduced circulating blood volume, carefully selected fluid treatment may help restore adequate kidney blood flow.

However, giving excessive fluid can be harmful in patients who already have fluid overload, heart problems or severe kidney dysfunction.

Fluid management should therefore be medically supervised.

2. Treating infections

If a serious infection is responsible for or contributing to AKI, appropriate treatment of the infection is essential.

Patients with severe infection may require hospital care, intravenous treatment and close monitoring.

3. Relieving urinary obstruction

When a blocked urinary tract causes AKI, restoring urine flow can be a critical part of treatment.

Depending on the cause, treatment may involve:

• Urinary catheterization
• Ureteric stent placement
• Nephrostomy
• Treatment or removal of a kidney stone
• Management of an enlarged prostate or other obstruction

4. Reviewing medicines

Doctors may review medicines that could contribute to kidney injury and adjust treatment when appropriate.

This is particularly important in people with dehydration, existing kidney disease or multiple medications.

Do not independently stop prescription medicines without consulting your healthcare professional.

5. Managing electrolyte abnormalities

AKI can cause potentially dangerous changes in potassium and other electrolytes.

Treatment depends on the specific abnormality and may include medicines, dietary measures or urgent hospital management.

6. Controlling fluid overload

When damaged kidneys cannot eliminate enough fluid, swelling and breathlessness can occur.

Treatment may involve fluid and sodium management, medicines or kidney replacement therapy in severe cases.

When is dialysis used for acute kidney injury?

Dialysis is not automatically required for every person with AKI.

Temporary kidney replacement therapy may be considered when severe AKI causes complications that cannot be adequately controlled with other treatments.

Possible reasons include:

• Severe potassium elevation
• Significant metabolic acidosis
• Severe fluid overload
• Certain toxin or drug poisonings
• Serious accumulation of waste products
• Other life-threatening complications

The decision is based on the patient's clinical condition, laboratory results and response to treatment.

Can acute kidney injury be cured?

Recovery depends largely on the cause and severity.

Some patients experience substantial or complete recovery after the underlying problem is corrected.

Others may have:

• Partial recovery
• Persistent reduction in kidney function
• Progression of previously unrecognized chronic kidney disease
• Increased risk of future kidney problems

Severe or prolonged AKI may cause lasting kidney damage.

How long does recovery from AKI take?

There is no fixed recovery period.

Mild cases may improve relatively quickly once the cause is corrected. More severe injuries can take weeks or longer to recover.

Recovery can also occur in stages, with kidney function improving gradually over time.

Follow-up blood and urine tests can help determine whether kidney function is returning toward baseline.

What happens after acute kidney injury?

Even when the immediate illness has resolved, follow-up may be recommended.

A doctor may monitor:

• Serum creatinine
• eGFR
• Urine protein or albumin
• Blood pressure
• Potassium
• Other electrolytes

Patients who have experienced AKI may have a higher future risk of chronic kidney disease, making appropriate follow-up important.

Can AKI turn into chronic kidney disease?

It can.

Some people recover completely, while others develop persistent kidney dysfunction.

The risk may be higher after severe or repeated episodes of AKI or when pre-existing kidney disease is present.

This is why recovery should be confirmed through appropriate follow-up rather than judged only by improvement in symptoms.

Who has a higher risk of acute kidney injury?

AKI can affect anyone, but risk may be higher in people with:

• Chronic kidney disease
• Diabetes
• High blood pressure
• Heart disease
• Older age
• Severe infections
• Dehydration
• Major surgery
• Urinary obstruction
• Previous AKI
• Certain medication exposures

People with these risk factors may require closer kidney monitoring during serious illnesses.

How can acute kidney injury be prevented?

Not all cases can be prevented, but several measures may reduce risk.

Manage dehydration promptly

Seek medical advice during severe vomiting, diarrhea or other conditions causing significant fluid loss.

Avoid unnecessary medicines

Do not frequently use over-the-counter pain medicines or supplements without understanding whether they are appropriate for you.

Monitor chronic conditions

Good management of diabetes, hypertension and existing kidney disease can reduce vulnerability to kidney injury.

Tell doctors about existing kidney problems

Healthcare professionals should know about previous kidney disease or abnormal kidney function before certain medicines or procedures are started.

Treat urinary obstruction

Persistent difficulty passing urine or known urinary obstruction should receive medical evaluation.

When should you seek urgent care?

Acute kidney injury can sometimes progress rapidly.

Seek urgent medical attention if you experience:

• Very little or no urine
• Severe breathlessness
• Rapidly worsening swelling
• Persistent vomiting
• Confusion
• Extreme drowsiness
• Severe weakness
• Chest discomfort
• Severe infection symptoms
• Rapid deterioration in general health

These symptoms can indicate serious kidney or other medical problems.

Acute Kidney Injury Treatment at Prabhakar Bhurke Clinic

At Prabhakar Bhurke Clinic, Dr. Sandip Prabhakar Bhurke provides specialist assessment for patients with suspected or confirmed acute kidney injury.

Depending on the individual situation, evaluation may include:

• Comparison with previous kidney function
• Serum creatinine and eGFR assessment
• Urine examination
• Electrolyte testing
• Medication review
• Evaluation for infection
• Assessment for dehydration
• Investigation of urinary obstruction
• Kidney imaging
• Fluid balance monitoring
• Evaluation for kidney replacement therapy when necessary
• Follow-up after kidney function begins to recover

The treatment plan is tailored to the cause, severity and overall health of the patient.

Frequently Asked Questions

What is the first step in acute kidney injury treatment?

The first priority is usually identifying the cause of the sudden kidney function decline and assessing its severity. Treatment is then directed toward the underlying problem and any complications.

Can drinking water treat acute kidney injury?

Not always. Fluid may be appropriate when AKI is caused by dehydration, but excessive fluid can be harmful in people with fluid overload or severe kidney dysfunction. Fluid intake should be individualized.

Does every AKI patient need hospitalization?

Not necessarily. The need for hospitalization depends on the severity, cause, laboratory abnormalities and overall health. Significant AKI may require close hospital monitoring.

Is acute kidney injury reversible?

It can be, particularly when the underlying cause is identified and treated promptly. However, some patients experience incomplete recovery or lasting kidney damage.

Can AKI happen to someone with previously healthy kidneys?

Yes. Severe dehydration, infection, obstruction, certain medications and other acute illnesses can cause AKI even in someone without known previous kidney disease.

Conclusion

Acute kidney injury treatment is primarily focused on identifying the reason for the sudden loss of kidney function and correcting it as quickly and safely as possible. Depending on the cause, treatment may involve fluid management, infection treatment, medication adjustment, relief of urinary obstruction or management of dangerous electrolyte and fluid abnormalities.

Dialysis is not necessary in every case. Some patients recover kidney function completely, while others require longer monitoring because AKI can increase the risk of future chronic kidney disease.

If you or a family member has abnormal kidney function, significantly reduced urine output, severe swelling or other concerning symptoms, timely medical evaluation is important.

For specialist evaluation and individualized kidney care, consult Dr. Sandip Prabhakar Bhurke at Prabhakar Bhurke Clinic.

Medical Disclaimer

This content is intended for general educational purposes and does not constitute medical advice, diagnosis or treatment. Acute kidney injury can be caused by many different conditions, and the appropriate treatment depends on the patient's medical history, kidney function, fluid status, laboratory results and underlying cause. Do not self-treat AKI, change fluid intake or stop prescription medicines without professional guidance. Severe reduction in urine output, breathlessness, confusion, severe swelling, persistent vomiting or rapidly worsening symptoms require urgent medical assessment. For an individualized diagnosis and treatment plan, consult Dr. Sandip Prabhakar Bhurke or another qualified nephrologist.