Chapter 47 ☠️ Flashcards
(545 cards)
What is the primary cause of acute diarrhea?
Ingesting infectious organisms.
What type of organisms cause most cases of infectious diarrhea in the United States?
Viruses.
What are the manifestations of Campylobacter infection?
- Diarrhea
- Abdominal cramps
- Fever
- Sometimes nausea, vomiting
How long does diarrhea from Campylobacter typically last?
About 7 days.
What is a common source of Clostridioides difficile infection?
Prolonged use of antibiotics followed by exposure to feces-contaminated surfaces.
What symptoms are associated with Clostridium perfringens infection?
- Diarrhea
- Abdominal cramps
- Nausea
- Vomiting
When do symptoms of Clostridium perfringens typically occur after eating contaminated food?
6-24 hours.
What are the manifestations of Enterohemorrhagic Escherichia coli infection?
- Watery or bloody diarrhea
- Abdominal cramps
- Nausea
- Vomiting
What is the duration of diarrhea caused by Salmonella infection?
4-7 days.
What are the manifestations of Shigella infection?
- Diarrhea (sometimes bloody)
- Fever
- Stomach cramps
What is a key characteristic of Staphylococcus infection?
Usually mild.
What are the symptoms associated with Cryptosporidium infection?
- Watery diarrhea
- Abdominal cramps
- Nausea
- Vomiting
- Fever
- Dehydration
- Weight loss
How long can Giardia lamblia symptoms last?
May last 2 weeks.
What is the typical duration of Norovirus infection?
1-2 days.
What are the symptoms of Rotavirus infection?
- Fever
- Vomiting
- Profuse watery diarrhea
What is a common transmission route for Norovirus?
Fecal-oral route.
What are common sources of waterborne disease caused by Giardia?
Swimming pools, lakes, drinking water, food contaminated with feces.
What high-risk groups are common for diarrhea in the United States?
- Travelers
- Recent immigrants
- Men who have sex with men
What is the primary transmission route for viral gastroenteritis?
Fecal-oral route.
What is the effect of the outer shell of Cryptosporidium?
Allows it to live for long periods outside of the body and makes it resistant to chlorine.
What is a common cause of bloody diarrhea in the United States?
Bacterial infection with Escherichia coli O157:7
Transmitted by undercooked beef or chicken contaminated with the bacteria or in fruits and vegetables exposed to contaminated manure.
Which organism is the most common GI parasite that causes diarrhea in the United States?
Giardia lamblia
How do some infectious organisms, like Rotavirus A and Norovirus, affect the intestines?
They change the secretion and/or absorption of enterocytes in the small intestine without causing inflammation.
What is secretory diarrhea?
A condition that occurs when ingested pathogens survive in the GI tract long enough to absorb into the enterocytes, leading to oversecretion of water, sodium, and chloride into the bowel.