5 Kidney Problems You Should Go to A&E For

5 Kidney Problems You Should Go to A&E For

When it comes to the kidneys, “function is life.” Because the kidneys are responsible for filtering toxins, balancing electrolytes, and managing fluid, a sudden failure or blockage can cause a rapid, life-threatening backup of metabolic waste.

If you experience these five “red flags,” call 999 (UK) or 911 (US) immediately.

1. Acute Kidney Injury (AKI)

AKI is a rapid episode of kidney failure or damage that happens within a few hours or a few days. It causes a dangerous buildup of waste products in your blood.

• The Red Flag: A rapid and significant drop in urine output, or stopping urinating altogether (anuria).

• Associated Signs: Swelling in the legs, ankles, or around the eyes (oedema).

• View Image: Signs of Fluid Retention (Oedema)

2. Obstructed Urosepsis

This occurs when a kidney stone blocks the flow of urine and the trapped urine becomes infected, leading to sepsis—a life-threatening reaction.

• The Sensation: Intense, agonising “colic” pain in the flank combined with high fever and rigors.

• The Warning: If you have known kidney stones and develop confusion or a rapid heart rate.

• View Image: Kidney Stone Obstruction on X-Ray

3. Renal Artery Occlusion (Kidney Infarction)

Similar to a stroke or heart attack, this is a “kidney attack.” It occurs when a blood clot cuts off the blood supply to the kidney tissue.

• The Sensation: Sudden, sharp, and persistent pain in the side or abdomen.

• Associated Signs: Blood in the urine (haematuria).

• View Image: How Blood Supply to the Kidney is Blocked

4. Hyperkalaemia (High Potassium Emergency)

When kidneys fail to filter properly, potassium levels can rise to levels that act like a “lethal injection,” causing the heart to stop.

• The Sensation: You may feel “okay” or experience vague muscle weakness or chest “fluttering.”

• The Warning: Sudden palpitations or extreme lethargy.

• View Image: The “Tall T-Wave” ECG Pattern of Hyperkalaemia

5. Severe Acute Pyelonephritis

This is a severe kidney infection. In the elderly, it can present with mental confusion (metabolic encephalopathy).

• The Sensation: Deep, throbbing pain in the back, nausea, and vomiting.

• The Danger: Can lead to permanent kidney scarring or abscesses.

• View Image: Difference Between a Healthy and Infected Kidney

What to do while waiting for help

• Monitor Output: If you pass any urine, try to catch it in a clean container for testing.

• Check Your Meds: Have a list of your medications ready, especially NSAIDs (Ibuprofen) and blood pressure meds.

• Do Not “Flush” with Water: If you cannot urinate, do not drink large amounts of water; if there is an obstruction, this increases pressure and pain.

• Note the Pain Pattern: Tell paramedics if the pain started in the back and moved toward the groin.