Chapter 12, Module 7; Diarrhea Flashcards
Abrupt onset 6-12 hr after exposure; nonbloody, watery diarrhea; lasts <1 wk; nausea/ vomiting, fever, abdominal pain, tenesmus
Viral gastroenteritis (e.g., Norwalk or rotavirus viral agents)
In children can see severe dehydration; hyperactive bowel sounds, diffuse pain on abdominal palpation
Viral gastroenteritis (e.g., Norwalk or rotavirus viral agents)
DIAGNOSTIC STUDIES FOR Viral gastroenteritis (e.g., Norwalk or rotavirus viral agents)?
PCR testing
Acute onset 12-24 hr after exposure; lasts 3-7 days; large amounts of bloody diarrhea with abdominal cramping and vomiting
Shigella (gram-negative rod; fecal-oral transmission; common in day care setting)
Lower abdominal tenderness, hyperactive bowel sounds, no peritoneal irritation
Shigella (gram-negative rod; fecal-oral transmission; common in day care setting)
DIAGNOSTIC STUDIES FOR Shigella (gram-negative rod; fecal-oral transmission; common in day care setting)?
Fecal leukocytes, positive stool culture; PCR testing
Acute onset 2-6 hr after ingestion; lasts 18-24 hr; large amounts of watery, nonbloody diarrhea; cramping and vomiting
Staphylococcus aureus food poisoning (gram¬ positive cocci; from improperly stored meats or custard-filled pies)
Hyperactive bowel sounds
Staphylococcus aureus food poisoning (gram¬ positive cocci; from improperly stored meats or custard-filled pies)
DIAGNOSTIC STUDIES FOR Staphylococcus aureus food poisoning (gram¬ positive cocci; from improperly stored meats or custard-filled pies)?
Fecal leukocytes, negative stool culture; PCR testing
Acute onset 8-20 hr after ingestion; lasts 12-24 hr; large amounts of watery, nonbloody diarrhea; abdominal pain and cramping
Clostridium perfringens food poisoning (gram-positive rod; from contaminated food)
Hyperactive bowel sounds, diffuse pain on abdominal palpation
Clostridium perfringens food poisoning (gram-positive rod; from contaminated food)
DIAGNOSTIC STUDIES FOR Clostridium perfringens food poisoning (gram-positive rod; from contaminated food)?
Fecal leukocytes, negative anaerobic culture of stool; PCR testing
Acute onset 3-5 days after exposure; lasts 3-7 days; moderate amounts of bloody diarrhea
Salmonella food poisoning (gram-negative bacilli; ingestion of contaminated food, poultry, eggs)
Fever, lower quadrant abdominal pain
Salmonella food poisoning (gram-negative bacilli; ingestion of contaminated food, poultry, eggs)
DIAGNOSTIC STUDIES FOR Salmonella food poisoning (gram-negative bacilli; ingestion of contaminated food, poultry, eggs)?
Fecal leukocytes, positive stool culture; PCR testing
Acute onset 8-24 hr after ingestion of contaminated food; lasts 3-5 days; large amounts of nonbloody, watery, painless diarrhea; can be mild or fulminate
Vibrio choterae (gram¬ negative rod; fecal-oral transmission; ingestion of contaminated water, seafood, or food)
Cyanotic,scaphoid abdomen, poorskin turgor, thready peripheral pulses,voice faint
Vibrio choterae (gram¬ negative rod; fecal-oral transmission; ingestion of contaminated water, seafood, or food)
DIAGNOSTIC STUDIES FOR Vibrio choterae (gram¬ negative rod; fecal-oral transmission; ingestion of contaminated water, seafood, or food)?
Fecal leukocytes, negative stool culture; PCR testing
Acute onset 8-18 hr after ingestion of contaminated food/water; lasts 24-48 hr; moderate amounts of nonbloody diarrhea; pain, cramping, abdominal pain; adults in United States generally do not develop illness from enterotoxic E. coli
Enterotoxic Escherichia coli (gram-negative rod; fecal-oral transmission; ingestion of contaminated water or food)
No fever; dehydration is major complication
Enterotoxic Escherichia coli (gram-negative rod; fecal-oral transmission; ingestion of contaminated water or food)
DIAGNOSTIC STUDIES FOR Enterotoxic Escherichia coli (gram-negative rod; fecal-oral transmission; ingestion of contaminated water or food)?
Fecal leukocytes, negative anaerobic culture of stool; PCR testing
Acute onset 12-24 hr after ingestion of contaminated food or water; large amounts of bloody diarrhea; abdominal cramping and vomiting
Entamoeba histolytica parasite (cysts in food and water, from feces)
Right lower quadrant abdominal pain; in small number of cases hepatic abscess forms
Entamoeba histolytica parasite (cysts in food and water, from feces)
DIAGNOSTIC STUDIES FOR Entamoeba histolytica parasite (cysts in food and water, from feces)?
IHA: antibodies to E. histolytica; positive titer is >1:128; PCR testing
Mild, watery diarrhea; crampy abdominal pain
Antibiotic-induced diarrhea (begins after taking antibiotics)
Diffuse abdominal pain on palpation, fever absent
Antibiotic-induced diarrhea (begins after taking antibiotics)
DIAGNOSTIC STUDIES FOR Antibiotic-induced diarrhea (begins after taking antibiotics)?
Usually not needed
Induced by antibiotics, most commonly ampicillin, clindamycin, or cephalosporins; symptoms range from transient mild diarrhea to active colitis with bloody diarrhea, abdominal pain, fever
Pseudomembranous colitis (antibiotic-induced Clostridium difficile)
Lower quadrant tenderness, fever
Pseudomembranous colitis (antibiotic-induced Clostridium difficile)
DIAGNOSTIC STUDIES FOR Pseudomembranous colitis (antibiotic-induced Clostridium difficile)?
CBC: leukocytes; sigmoidoscopy/ colonoscopy; C. difficile toxin assay or stool culture; C. difficile toxin; PCR testing
Children age <4 yr with history of gastroenteritis; history of bloody diarrhea, fever, and irritability
Hemolyticuremic syndrome (HUS) (primary cause of HUS in United States is E. coli 0157:H7)