Emphysematous Pyelonephritis
What is Emphysematous Pyelonephritis?
Emphysematous pyelonephritis is a rare but serious kidney infection that produces gas in the kidney tissue. The infection is caused by bacteria that create gas bubbles as they multiply. This condition is a medical emergency that requires immediate treatment.
The gas formation sets this infection apart from regular kidney infections. It happens when certain bacteria break down sugar in the body and release gas as waste. This gas can be seen on imaging tests like CT scans. The condition affects the kidney tissue and surrounding areas.
Most cases occur in people with poorly controlled diabetes. The high blood sugar creates an environment where gas-forming bacteria thrive. Women develop this condition more often than men. Early detection and treatment are critical to prevent kidney loss or death.
Symptoms
- Fever and chills
- Pain in the side or back below the ribs
- Nausea and vomiting
- Confusion or altered mental state
- Painful or burning urination
- Frequent urge to urinate
- Blood in urine
- Rapid heartbeat
- Low blood pressure or shock
- Abdominal pain
Symptoms usually develop quickly over hours to days. Some people may initially have mild symptoms that worsen rapidly. This condition requires emergency medical attention at the first sign of severe kidney infection symptoms.
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Causes and risk factors
Emphysematous pyelonephritis happens when gas-forming bacteria infect the kidney. The bacteria most commonly involved are E. coli and Klebsiella pneumoniae. These bacteria break down glucose into gas when oxygen levels are low. Diabetes is the biggest risk factor, present in 80 to 90 percent of cases. High blood sugar weakens the immune system and provides extra fuel for bacteria.
Other risk factors include urinary tract blockages, kidney stones, and immune system problems. Women face higher risk than men. People with recurrent urinary tract infections are also more vulnerable. Conditions that reduce blood flow to the kidneys can create the low-oxygen environment where gas-forming bacteria thrive. Age over 50 increases risk as well.
How it's diagnosed
Doctors diagnose emphysematous pyelonephritis using imaging tests and laboratory work. A CT scan is the gold standard because it clearly shows gas in the kidney tissue. Ultrasound may also detect gas bubbles. Blood tests check for signs of infection and measure kidney function. Urine tests detect bacteria and white blood cells through markers like leukocyte esterase.
Rite Aid offers urine testing that can help identify kidney infections early. Our testing panel includes urine leukocyte esterase, which becomes strongly positive during kidney infections. Early detection of urinary tract infections can help prevent progression to this serious condition. If you have diabetes and urinary symptoms, getting tested quickly is important.
Treatment options
- Immediate hospitalization in intensive care
- Intravenous antibiotics to fight the bacterial infection
- Fluids and medications to stabilize blood pressure
- Blood sugar control through insulin therapy
- Drainage of kidney abscesses or fluid collections
- Surgical removal of the kidney in severe cases
- Close monitoring of kidney function and vital signs
- Long-term diabetes management to prevent recurrence
Concerned about Emphysematous Pyelonephritis? Get tested at Rite Aid.
- Simple blood draw at your nearest lab
- Results in days, not weeks
- Share results with your doctor
Frequently asked questions
Emphysematous pyelonephritis produces gas in the kidney tissue, while regular kidney infections do not. The gas forms when certain bacteria break down sugar in a low-oxygen environment. This makes the condition much more dangerous and life-threatening. It requires more aggressive treatment including possible surgery.
People with poorly controlled diabetes face the highest risk, representing 80 to 90 percent of cases. Women are affected more often than men. Other risk factors include urinary tract blockages, kidney stones, and weakened immune systems. People over age 50 also have increased risk.
Urine tests can detect signs of kidney infection that may indicate this condition. Leukocyte esterase in urine shows strongly positive during kidney infections. However, imaging tests like CT scans are needed to confirm gas formation. Early urine testing can help catch infections before they become severe.
Symptoms typically develop rapidly over hours to a few days. The infection can progress from mild urinary symptoms to life-threatening illness very quickly. Fever, severe pain, and confusion are warning signs that require emergency care. People with diabetes should be especially alert to any urinary tract infection symptoms.
This condition can be fatal if not treated immediately. The mortality rate ranges from 20 to 50 percent even with treatment. Early diagnosis and aggressive treatment improve survival chances significantly. Delays in treatment increase the risk of kidney loss, sepsis, and death.
Kidney removal is required in 30 to 50 percent of severe cases. Doctors try to save the kidney with antibiotics and drainage procedures first. The decision depends on how severe the infection is and how well you respond to treatment. Early detection and treatment reduce the chance of needing surgery.
Keeping blood sugar levels well controlled is the most important prevention step. Treat urinary tract infections promptly before they spread to the kidneys. Stay well hydrated and practice good hygiene. Regular monitoring through urine tests can catch infections early when they are easier to treat.
E. coli causes about 70 percent of cases. Klebsiella pneumoniae is the second most common cause. Other bacteria that can produce gas include Proteus and Enterobacter species. These bacteria create gas when they break down glucose in low-oxygen conditions.
Initial hospitalization typically lasts 1 to 2 weeks or longer. Intravenous antibiotics continue for at least 7 to 14 days. After discharge, oral antibiotics may continue for several more weeks. Full recovery can take months, especially if surgery was required.
Recurrence is possible, especially if underlying risk factors remain uncontrolled. People with diabetes who do not manage blood sugar well face higher recurrence risk. Addressing urinary tract blockages and maintaining good diabetes control reduce the chance of repeat infections. Regular monitoring and preventive care are essential for people who have had this condition.