Sepsis and shock
medical conditions

Sepsis and shock

Explore the available health information, treatment context, and integrative evidence for Sepsis and shock.

Background
  • Sepsis, also called systemic inflammatory response syndrome (SIRS), is a serious illness that occurs when the body is fighting an infection. As the immune system fights against the infection, inflammation occurs, causing an increased heartbeat, rapid breathing, and abnormal temperature.
  • Without immediate treatment, sepsis can be life-threatening. Severe sepsis, also called septicemia, may cause inflammation and blood clotting throughout the entire body. As a result, one or more internal organs may stop working properly or fail. Sepsis may also lead to a dangerous drop in blood pressure called septic shock.
  • Septic shock occurs most often in newborns, individuals who older than 50 years of age, and in those who have other long-term illnesses.
  • Septic shock is a serious condition that requires immediate medical attention. Even with treatment, an estimated 30% of patients with septic shock die. The risk of death increases to 60-80% for newborns, the elderly, and individuals with underlying medical conditions. The patient's prognosis depends on the type of infection, as well as the amount of organ damage that has occurred. If organ damage occurs, it is usually irreversible, even if sepsis is successfully treated.
Risk Factors and Causes
  • Bacterial infections are the most common cause of sepsis. Any type of bacterial infection can cause sepsis. Less commonly, viruses may lead to sepsis, and in rare cases, a fungal infection may cause sepsis. The infection may be anywhere in the body. Sometimes the source of the infection is unknown.
  • Once the infectious organism enters the body, the immune system launches an attack to prevent an infection. As a result, inflammation occurs to help the body repair damaged tissues. Normally, the body balances the chemical signals that start and stop the inflammatory response. However, in septic patients, the inflammatory response is not regulated properly. As a result, inflammation occurs throughout the entire body, rather than just the infected area.
  • This widespread inflammation may lead to severe sepsis. The chemicals released during the inflammatory response stimulate tiny blood vessels to form clots throughout the body. As a result, the heart has to pump harder to pump blood, and the clots prevent enough oxygen from reaching tissues and organs. When the organs do not receive enough oxygen, they may become damaged or even fail. As the heart works extra hard to pump blood throughout the body, it starts to weaken and blood pressure drops. When blood pressure drops to dangerously low levels, the condition is called septic shock.
  • The immune system chemicals may also harm body tissues. As the immune chemicals become overactive in an attempt to kill the disease-causing organism, they may also destroy healthy body tissues in the process.
  • Individuals who have weakened immune systems have an increased risk of developing septic shock. This includes elderly and very young patients. It also includes patients with diseases that weaken the immune system, such as HIV/AIDS. Individuals who have long-term medical illnesses, such as diabetes, lymphoma, leukemia, or diseases of the genitourinary system or gastrointestinal system, also have an increased risk of developing septic shock. This is because these conditions make patients prone to developing infections. Individuals who have recently had an infection or recently underwent surgery or chemotherapy are also at risk for septic shock. Long-term use of antibiotics may lead to antibiotic resistance, which also increases the risk of septic shock.
Signs and Symptoms
  • General: Septic shock is a medical emergency that requires immediate medical treatment. Individuals who experience symptoms of septic shock should be taken to the emergency room of the nearest hospital.
  • Sepsis: Sepsis occurs in response to an infection in the body. Although the infection can be anywhere in the body, sepsis is often caused by an infection in the kidneys, lungs, abdomen, skin, or digestive tract. Symptoms of sepsis often develop suddenly. Initial symptoms may include rapid heartbeat, increased breathing, and fever or sometimes extremely low body temperature.
  • Severe sepsis and septic shock: Symptoms that the condition may be progressing to severe sepsis or septic shock may include confusion, reduced mental alertness, skin rash or bleeding, warm and flushed skin, decreased urine production, and dizziness (caused by low blood pressure).
  • Without immediate treatment, the organs will begin to fail. Symptoms of organ failure depend on the specific organ affected. For instance, if the lungs start to become dysfunctional, the patient may experience shortness of breath or difficulty breathing. If the kidneys start to fail, the patient may stop producing urine.
Diagnosis
  • A blood test is performed to diagnose sepsis. The patient's blood will have high levels of white blood cells (a type of immune cell), decreased levels of oxygen, decreased levels of platelets, increased levels of lactic acid, and increased levels of metabolic waste products (such as nitrogen).
  • A sample of blood is also analyzed to detect a bacteria, virus, or fungi. The blood may be analyzed under a microscope to detect pathogens. A blood culture may also be performed. During this procedure a sample of the patient's blood is taken and placed in a medium where disease-causing microorganisms will grow if they are present.
  • The patient's urine, saliva, stool, or other secretions may also be analyzed for the presence of bacteria or fungi.
  • A healthcare provider may monitor the level of oxygen in the patient's blood with a fingertip sensor.
Treatment
  • General: Septic shock is a medical emergency. Patients with septic shock are typically admitted to the intensive care unit (ICU) of the hospital. Prompt treatment increases the patient's prognosis.
  • Antibiotics: High doses of intravenous antibiotics are the first line of treatment for sepsis. Until the laboratory tests detect the specific type of infection, patients typically receive a combination of two broad spectrum antibiotics such as meropenem (Merrem®) or imipenem/cilastatin (Primaxin®). This increases the likelihood that the infection will be treated. Once doctors know what type of infection the patient has, the type of medication may be switched.
  • Fluids: Large amounts of fluid are immediately given intravenously to increase the blood pressure.
  • Vasopressors: If the patient's blood pressure is still low after intravenous fluids are given, medications, called vasopressors, may be used. Vasopressors, such as ephedrine (Ephedrine Sulfate®), constrict the blood vessels in order to increase blood pressure.
  • Activated protein C: Patients with severe sepsis who have a high risk of dying may receive a new drug called activated C protein (Xigris®). This medication helps stop the immune system's inflammatory response. However, it is only recommended in severe, life-threatening cases because it may cause serious bleeding. For this reason, it should be avoided in patients with bleeding disorders. Because activated protein C is new, it is an expensive treatment.
  • Oxygen: Patients often require supplemental oxygen when they are first admitted to the hospital. If the lungs fail, the patient may need a mechanical ventilator to help them breath.
  • Surgery: Surgery may need to be performed to remove any dead tissue, such as tissue that is infected with gangrene.
Prevention
  • Many cases of septic shock cannot be prevented. However, it is recommended that all infections are quickly treated.
  • Patients with weakened immune systems, such as HIV patients, the elderly, infants, or patients undergoing chemotherapy, should take steps to prevent infections. Avoiding close contact with individuals who have contagious illnesses may help reduce the risk of acquiring infections. Practicing good hygiene and regularly washing the hands with soap and warm water may help reduce the risk of acquiring infections
  • Patients who are at risk of developing septic shock should know the symptoms. Receiving quick medical care for septic care is important to prevent death.
References

Natural Standard developed the above evidence-based information based on a thorough systematic review of the available scientific articles. For comprehensive information about alternative and complementary therapies on the professional level, go to www.naturalstandard.com. Selected references are listed below.

  • Delaloye J, Baumgartner JD, Calandra T. Severe sepsis and septic shock. Article in French. Rev Med Suisse. 2006 Apr 5;2(60):896-8, 900-2.
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  • Dellinger RP, Carlet JM, Masur H, et al. Surviving Sepsis Campaign guidelines for management of severe sepsis and septic shock. Crit Care Med. 2004 Mar;32(3):858-73.
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  • Dries DJ. Cardiovascular support in septic shock. Air Med J. 2007 Sep-Oct;26(5):240-7.
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  • National Institutes of Health (NIH). . Accessed September 26, 2007.
  • Natural Standard: The Authority on Integrative Medicine. . Copyright © 2007. Accessed September 26, 2007.
  • Nguyen HB, Rivers EP, Abrahamian FM, et al. Severe sepsis and septic shock: review of the literature and emergency department management guidelines. Ann Emerg Med. 2006 Jul;48(1):28-54. Epub 2006 May 2.
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  • Nobre V, Sarasin FP, Pugin J. Prompt antibiotic administration and goal-directed hemodynamic support in patients with severe sepsis and septic shock. Curr Opin Crit Care. 2007 Oct;13(5):586-91.
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  • O'Brien JM Jr, Abraham E. New approaches to the treatment of sepsis. Clin Chest Med. 2003 Dec;24(4):521-48,v.
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  • Patel GP, Gurka DP, Balk RA. New treatment strategies for severe sepsis and septic shock. Curr Opin Crit Care. 2003 Oct;9(5):390-6.
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