Sepsis

What is Sepsis?

Sepsis is a life-threatening condition where your body has an extreme response to an infection. When bacteria or other germs enter your bloodstream, your immune system can overreact and attack your own tissues. This damages organs throughout your body and can lead to septic shock, organ failure, or death if not treated quickly.

Sepsis happens when your body releases chemicals to fight an infection, but those chemicals cause widespread inflammation instead of healing. Blood pressure can drop dangerously low, reducing blood flow to vital organs. Your heart, kidneys, lungs, and brain may not get enough oxygen to function properly.

Anyone can develop sepsis from any type of infection, but it most often starts from pneumonia, urinary tract infections, abdominal infections, or skin wounds. Sepsis is a medical emergency that requires immediate hospital care with antibiotics and intravenous fluids. Early detection and treatment save lives.

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Symptoms

Fever above 101°F or temperature below 96.8°F
Fast heart rate, typically over 90 beats per minute
Rapid breathing, more than 20 breaths per minute
Confusion, disorientation, or difficulty staying awake
Extreme pain or discomfort in your body
Clammy or sweaty skin despite no activity
Shortness of breath or trouble breathing
Very low blood pressure causing dizziness
Reduced urine output or no urination
Blotchy or discolored skin

Sepsis symptoms appear suddenly and worsen quickly. Some people may only notice one or two symptoms at first, but the condition can progress to septic shock within hours. If you suspect sepsis, call 911 immediately rather than waiting to see if symptoms improve.

Causes and risk factors

Sepsis develops when an infection spreads through your bloodstream and triggers a severe immune response. Bacterial infections cause most cases, but viruses, fungi, and parasites can also lead to sepsis. Common sources include lung infections like pneumonia, kidney or bladder infections, digestive system infections, infected wounds or burns, and infections from medical devices like catheters or IV lines.

Your risk increases if you are over 65, have a weakened immune system, have chronic conditions like diabetes or kidney disease, are in the hospital or recently had surgery, or have invasive medical devices. Babies under one year old and pregnant women also face higher risk. People who delay treatment for infections or do not finish antibiotic courses may develop severe infections that progress to sepsis.

How it's diagnosed

Doctors diagnose sepsis based on symptoms, physical examination, and blood tests that show signs of infection and organ dysfunction. A blood culture test identifies bacteria or other germs in your bloodstream. C-Reactive Protein measures inflammation levels, which rise dramatically during sepsis. Lactic acid levels increase when your organs are not getting enough oxygen due to poor blood flow.

Additional tests may include white blood cell counts, bilirubin to check liver function, troponin to assess heart damage, and D-dimer to detect blood clotting problems. Rite Aid testing includes biomarkers like C-Reactive Protein, lactic acid, bilirubin, and high-sensitivity troponin that help monitor inflammation and organ stress. Early testing at Quest Diagnostics locations can identify warning signs before sepsis becomes severe.

Treatment options

Immediate hospitalization in an intensive care unit for monitoring
Broad-spectrum antibiotics given through an IV within one hour of diagnosis
Intravenous fluids to raise blood pressure and improve organ blood flow
Vasopressor medications if blood pressure remains dangerously low
Oxygen therapy or mechanical ventilation to support breathing
Dialysis if kidneys fail and cannot filter waste from blood
Surgery to remove infected tissue or drain abscesses if needed
Blood sugar control to help your body fight infection
Monitoring of vital signs and organ function every few hours
Long-term rehabilitation and follow-up care after hospital discharge

Frequently asked questions

An infection is when germs invade a specific part of your body, like your lungs or skin. Sepsis happens when your immune system overreacts to that infection and starts damaging your own organs. Not every infection leads to sepsis, but any infection can potentially trigger this life-threatening response if left untreated.

Yes, many people survive sepsis if they receive immediate medical treatment. Early recognition and treatment within the first hour dramatically improve survival rates. However, sepsis can be fatal, and survivors may experience long-term effects like organ damage, weakness, cognitive problems, or post-sepsis syndrome that requires ongoing care.

Sepsis can develop within hours of an infection starting or appearing. Some people progress from early sepsis to septic shock in just a few hours. This is why sepsis is considered a medical emergency that requires immediate hospital care rather than waiting to see if symptoms improve on their own.

Blood culture tests identify bacteria in your bloodstream, confirming the infection source. C-Reactive Protein and interleukin markers measure inflammation levels that spike during sepsis. Lactic acid testing shows if your organs are getting enough oxygen, while bilirubin and troponin reveal liver and heart stress from the condition.

You can reduce sepsis risk by treating infections promptly with appropriate antibiotics and finishing the full course. Practice good hygiene, clean wounds properly, stay current on vaccinations, and manage chronic conditions like diabetes. Seek medical care quickly if an infection is not improving or symptoms are worsening.

Adults over 65, infants under one year, and people with weakened immune systems face the highest risk. Those with chronic diseases like diabetes, cancer, or kidney disease are more vulnerable. Hospital patients, especially those with catheters or IV lines, and people recovering from surgery also have increased sepsis risk.

Septic shock is the most severe stage of sepsis where blood pressure drops so low that organs begin to fail. Your body cannot maintain adequate blood flow even with intravenous fluids. Septic shock requires intensive care treatment with vasopressor medications to raise blood pressure and prevent death from organ failure.

Yes, you can develop sepsis multiple times because it is a response to infection rather than a disease itself. People who have had sepsis once may actually be at higher risk for future episodes due to weakened immune function or organ damage. Preventing infections becomes especially important after surviving sepsis.

Survivors may experience post-sepsis syndrome, which includes fatigue, muscle weakness, trouble sleeping, and difficulty concentrating. Some people develop permanent organ damage affecting kidneys, lungs, or heart function. Anxiety, depression, and post-traumatic stress are common after the traumatic experience of severe sepsis and intensive care treatment.

Treatment begins with immediate IV antibiotics, usually within one hour of diagnosis. You receive large amounts of intravenous fluids to stabilize blood pressure and improve organ blood flow. Doctors monitor your vital signs constantly and may add medications to raise blood pressure, provide oxygen support, or support failing organs until the infection is controlled.