Claire Dawson
Clostridioides difficile (C. diff) is a highly contagious bacterial infection that causes antibiotic-associated diarrhea and colitis. It is a leading cause of healthcare-associated infections, with high rates of contamination in patient care environments, and can be life-threatening. As a result, hospitals implement isolation protocols for patients with suspected or confirmed C. diff infections. These protocols include isolating patients with diarrhea, using dedicated patient-care equipment, and adhering to recommended hand hygiene practices. Isolation rooms are preferred for C. diff patients, but when unavailable, patients are cohorted or placed with low-risk roommates. Prolonged isolation is often recommended due to evidence of continued C. diff shedding after treatment.
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What You'll Learn
Isolation precautions for C. diff patients
Clostridioides difficile (C. diff) is a common cause of antibiotic-associated diarrhea (AAD). It is a spore-forming, Gram-positive anaerobic bacillus that produces two exotoxins: toxin A and toxin B. C. diff spores can transfer to patients via healthcare personnel who have touched a contaminated surface or item. Therefore, it is important to adhere to the following isolation precautions to prevent the spread of C. diff in hospitals.
Patients with diarrhea should be isolated while the cause is being evaluated. Place symptomatic patients on contact precautions in a single-patient room with a dedicated toilet. If single-patient rooms are unavailable, room patients with confirmed C. diff together. For patients with confirmed C. diff, maintain contact precautions for at least 48 hours after diarrhea has resolved or for the duration of their hospital stay.
It is important to use dedicated patient-care equipment, such as blood pressure cuffs and stethoscopes, and to implement daily patient bathing or showering with soap and water. When transferring patients, notify the receiving facility about the patient's C. diff status to ensure continued contact precautions.
Surfaces should be cleaned daily with an EPA-approved spore-killing disinfectant while treating a C. diff patient, upon their discharge, or after a body substance spill. Use EPA-registered disinfectants (List K) in patient-care areas as appropriate.
Additionally, healthcare personnel should wear appropriate PPE, including gloves and a gown, when treating patients with potential infectious diarrhea, including C. diff. Hand hygiene practices should also be adhered to as hand sanitizer and handwashing may not be sufficient to eliminate all C. diff spores.
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Preventing C. diff transmission in hospitals
Clostridioides difficile (C. diff) is a highly contagious bacterium that causes severe diarrhoea and colitis (inflammation of the colon). It is often spread in hospitals and long-term care facilities, where people frequently touch shared surfaces and items. As such, hospitals must implement rigorous prevention and control measures to curb its transmission.
Firstly, patients with diarrhoea should be isolated while the cause is being evaluated. Symptomatic patients should be placed on contact precautions in a single-patient room with a dedicated toilet. If single-patient rooms are unavailable, room patients with confirmed C. diff infections (CDI) together. For patients with confirmed CDI, maintain contact precautions for at least 48 hours after diarrhoea has resolved or for the duration of their hospital stay.
Secondly, healthcare workers should adhere to strict hand hygiene practices. Handwashing with soap and water is essential, as hand sanitizers and even handwashing alone may not eliminate all C. diff spores. Additionally, healthcare workers should wear gloves and a gown when treating patients with potential infectious diarrhoea, including C. diff.
Thirdly, hospitals should ensure proper cleaning and disinfection of patient-care areas and frequently touched surfaces, such as faucet handles, toilet flushes, bedrails, and doorknobs. EPA-registered disinfectants with a sporicidal claim have been successful in environmental surface disinfection of patient-care areas.
Furthermore, hospitals should implement daily patient bathing or showering with soap and water and ensure patients wear clean clothes to reduce the spread of bacteria.
Finally, hospitals should dedicate healthcare personnel to the care of only patients with CDI, typically cohorted on a single ward or unit, to minimize the risk of transmission to others. Additionally, hospitals should limit the use of medications like proton pump inhibitors, which are hypothesized to increase the risk of CDI.
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C. diff treatment options
Clostridioides difficile (C. diff) is a common cause of antibiotic-associated diarrhea (AAD). It is a spore-forming, Gram-positive anaerobic bacillus that produces two exotoxins: toxin A and toxin B. C. diff spores can transfer to patients via healthcare workers who have touched a contaminated surface or item. Therefore, it is important to adhere to recommended hand hygiene practices and use dedicated patient-care equipment.
When it comes to C. diff treatment options, the first step is to isolate patients with possible C. diff immediately, even if it is only suspected. Patients with clinically significant unexplained diarrhea should be evaluated, and infection control measures should be maintained for patients with positive test results. It is recommended to order a C. diff test if other causes of diarrhea, such as stool softeners or laxatives, are not the cause.
For suspected patients, ensure rapid evaluation by healthcare personnel and infection prevention. Place symptomatic patients on contact precautions in a single-patient room with a dedicated toilet. If single-patient rooms are unavailable, room patients with confirmed C. diff together. For patients with confirmed C. diff, maintain contact precautions for at least 48 hours after diarrhea has resolved or for the duration of their hospital stay.
In terms of medication, C. diff infections are typically treated with antibiotics. In about 20% of patients, C. diff infections resolve within two to three days of discontinuing the antibiotic that caused the infection. However, for more severe or recurring cases, a 10-day course of treatment is recommended, including oral vancomycin or fidaxomicin. It is important to continue taking the medication as prescribed to prevent recurrence.
Additionally, it is crucial to implement proper cleaning and disinfection procedures. Surfaces should be clean, and spills should be managed promptly. Routine cleaning should be performed before disinfection using EPA-registered disinfectants with a sporicidal claim, which have been successful in environmental surface disinfection of patient-care areas.
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C. diff risk factors
C. diff, or Clostridioides difficile, is a common cause of antibiotic-associated diarrhea (AAD). It is a spore-forming, Gram-positive, anaerobic bacterium that produces two exotoxins: toxin A and toxin B. C. diff infections (CDI) are a significant problem in hospitals, nursing homes, and communities. The risk factors for C. diff infection include:
Recent antibiotic use
The most significant risk factor for C. diff infection is the use of broad-spectrum antibiotics. Antibiotics disturb the balance of gut flora, enabling C. diff overgrowth and infection. People are up to 10 times more likely to get a C. diff infection while taking antibiotics or during the three months after.
Advanced age
Older individuals are more susceptible to C. diff infection.
Underlying health conditions
Those with serious underlying illnesses are at a higher risk of C. diff infection.
Hospitalization
C. diff is primarily associated with healthcare settings, and prolonged hospital stays increase the risk of infection.
Immunosuppression
A weakened immune system can increase the risk of C. diff infection.
Prior C. diff infection
Previous infection with C. diff can be a risk factor for subsequent infections.
Inadequate infection control
Suboptimal antibiotic stewardship and inadequate infection control measures in healthcare settings can facilitate the transmission of C. diff among patients.
Proton pump inhibitors
The use of proton pump inhibitors is hypothesized to increase the risk of C. diff infection.
Length of hospital stay
A long length of stay in healthcare settings can increase the risk of exposure to C. diff.
Gastrointestinal surgery or manipulation
Gastrointestinal procedures can be a risk factor for C. diff infection.
Isolation precautions
When isolating patients with suspected or confirmed C. diff, they should be placed in a single-patient room with a dedicated toilet. Contact precautions should be maintained for at least 48 hours after diarrhea has resolved or for the duration of hospitalization. Healthcare personnel dedicated to the care of CDI patients should be assigned to minimize the risk of transmission.
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C. diff testing
C. diff, or Clostridioides difficile, is a common cause of antibiotic-associated diarrhoea (AAD). It is a spore-forming, Gram-positive anaerobic bacillus that produces two exotoxins: toxin A and toxin B. C. diff bacteria are common in the environment and can be found in the stools of infected people.
There are several tests available for detecting C. diff, and healthcare providers may order a combination of two or more types of tests to make an accurate diagnosis. Some tests check the stool sample for toxins produced by C. diff, while others look for genes from toxin-producing C. diff or certain proteins called GDH antigens. GDH antigen tests can show if C. diff is present in the body but cannot indicate whether it is causing illness. Enzyme immunoassay tests detect toxin A, toxin B, or both, and are popular with clinical laboratories as they are cheap, easy to perform, and provide same-day results. Molecular assays, such as PCR tests, are highly sensitive and specific for the presence of toxin-producing C. diff, but they can also be positive for individuals without an infection, leading to over-diagnosis and treatment. Tissue culture cytotoxicity assays are another option but are costly, require technical expertise, and take 24 to 48 hours for results.
In hospitals, patients with diarrhoea should be isolated while the cause is being evaluated. Patients with suspected or confirmed C. diff infection (CDI) should be placed in a single-patient room with a dedicated toilet, if available. If single-patient rooms are not available, patients with confirmed CDI can be roomed together. Contact precautions should be maintained for at least 48 hours after diarrhoea has resolved or for the duration of the patient's hospital stay. This includes recommended hand hygiene practices and the use of dedicated patient-care equipment.
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Frequently asked questions
C. diff stands for Clostridioides difficile, a highly contagious bacterial infection that causes antibiotic-associated diarrhea and colitis (inflammation of the colon).
C. diff spreads easily in hospitals and other places with many people living together. Hospitals should adhere to recommended hand hygiene practices and use dedicated patient-care equipment. Patients with suspected or confirmed C. diff should be isolated in single-patient rooms with dedicated toilets, and healthcare personnel should wear gloves and gowns when treating these patients.
Patients with C. diff should be isolated for at least 48 hours after diarrhea has resolved or until the end of their hospitalization. Prolonged isolation may be necessary because C. diff shedding may continue for at least 1 to 4 weeks after treatment.
