Clostridium Difficile Infection CDI: Difference between revisions

Introduction[edit|edit source]

Clostridium difficile

Clostridium Difficile Infections (CDI) are considered one of the most significant nosocomial infections which affect all hospitals worldwide. Clostridium difficile (C. Difficile) is an anaerobic, gram-positive, spore-forming bacillusbacteriathat can cause colitis, a seriousinflammationof the colon.Infectionsfrom C. difficile often start after over-takingantibioticsand can sometimes be life-threatening^[1]．This rode shaped bacterium exists in vegetative or spore form and can survive harsh environments and common sterilization techniques. Clostridium difficile is resistant to ultra-violent light, high temperatures, and antibiotics.^[2]

Epidemiology[edit|edit source]

Clostridium difficile infection (CDI) has become a serious medical and epidemiological problem with approximately 5% of adults and 15 to 70% of children being colonized by C. difficile and the colonization prevalence further increases with hospitalized patients and patients in nursing homes^[3]．Also, patients above the age of 65 are more at risk at developing CDI than younger patients^[4]．The incidence of CDIs also depends on the length of the hospitalization period where during the first few days of hospitalization the risk is between 2.1 to 20% and longer periods of hospitalization increase the risk to up to 45.4% of getting CDI^[5]．2015年,美国疾病控制中心和前vention (CDC) found that C. difficile caused half a million infections and resulted in 15,000 deaths in a single year^[6]．Prevention, proper diagnosis and effective treatment are necessary to reduce the risk for the patients, deplete the spreading of infection and diminish the probability of recurrent infection.

Etiology[edit|edit source]

Hand Hygiene

C. diff exists all around us, being in the air, water, soil, and in the feces of humans and animals. C. diff bacteria that are outside the body turn into spores that can live on surfaces for weeks or months. These spores are dormant but they can become active after ingestion, getting into the intestines. C. difficile also naturally occurs in the gut. When the bacterium is present at normal levels, it is not considered to be an infection.

This bacterium does not usually cause problems for people who are otherwise healthy. However, some antibiotics may alter the balance of bacteria in the gut, allowing C. difficile to multiply. It is at this stage that it becomes an infection. The infection can cause diarrhea and increase the risk of more serious illnesses.

Most cases of C. difficile infection occur in healthcare environments, the link here being with antibiotic therapy^[6]．

Risk Factors[edit|edit source]

C. diff can affect anyone, however cases of C. diff occur when taking antibiotics or not long after finishing taking antibiotics.

Other risk factorsinclude :

• Being 65 or older
• Recent stay at a hospital or nursing home
• A weakenedimmune system, egpeoplewithHIV/AIDS, cancer, or organ transplant patients takingimmunosuppressive drugs
• Previous infection with C. diff or known exposure to the germs^[7]
  

Characteristics/Clinical Presentation[edit|edit source]

Symptoms may develop within a few days after taking antibiotics, and include:

• Severe diarrhea
• Fever
• Stomach tenderness or pain
• Loss of appetite
• Nausea^[7]

In a more serious case symptoms peritonitis,septicemia, or perforation of the colon may occur. The risk of experiencing a life threatening condition is higher among older people and those with serious health conditions. Symptoms include:

• Diarrhea more than 10 times a day
• Severe cramping
• Fever
• Nausea
• Loss of appetite/weight loss
• Dehydration
• Rapid heart rate^[6]

Diagnosis[edit|edit source]

For definitive diagnosis a stool sample must be collected. Tests include:

• Enzymeimmunoassay
• Polymerase chain reaction
• GDH/EIA
• Cell cytotoxicity assay

If a serious problems with the colon is suspected, an X-rays or a CT scan of the intestines may be ordered. In rare cases, the doctor may examine the colon with procedures such as a flexible sigmoidoscopy or colonoscopy^[1]．

Medical Management[edit|edit source]

Standard treatment for a C. difficile infection is antibiotics. If a person is taking antibiotics when symptoms appear, a doctor may consider stopping that course and prescribing a new type. However, treatment with antibiotics may make a C. difficile infection worse by attacking the helpful bacteria in the body.

Alternative therapies include:

• Probiotics: used to help restore a healthful balance in the intestine. Saccharomyces boulardii (S. boulardii), a natural yeast, can reduce recurring C. difficile infections when a person takes it together with antibiotics. S. boulardii probiotics are available for purchase online.
• Surgery: If symptoms are severe, or if there is organ failure or perforation of the lining of the abdominal wall, it may be necessary to surgically remove the affected part of the colon.
• Fecal microbiota transplantation (FMT): Medical professionals are now using fecal transplants in recurrent cases of C. difficile infection. A healthcare provider will transfer bacteria from a healthy person’s colon into the colon of a person with C. difficile^[6]．

Physical Therapy Management[edit|edit source]

C. difficile infections are primarily managed through pharmaceutical therapy and associated medical treatments.

The therapist should take an active role ininfection controland prevention measures whenever working with these patients. Infection control measures include: donning gloves and gowns prior to entering patients room, washing hands with soap and water upon departure, treating patients in a private room, educating visitors on proper hygiene measures. Routine environmental screening and use of chlorine-containing cleaning agents is also recommended.

References[edit|edit source]