Bacterial Gastroenteritis Practice Questions with Complete Solutions Rated 100%

Bacterial Gastroenteritis Practice Questions with Complete Solutions Rated 100% What is bacterial gastroenteritis? - Answers Inflammation the GI tract associated with diarrhoea, caused by bacterial infection. Common bacteria causing bacterial gastroenteritis - Answers Campylobacter Salmonella Shigella E. coli C. difficile S. aureus C. botulinum Less common (rare) bacteria causing bacterial gastroenteritis - Answers Aeromonas Pleisomonas Cholera Vibrio parahaemolyticus What are the two mechanisms by which bacteria can cause gastroenteritis? - Answers Inflammatory mechanism Non-inflammatory mechanism Describe the inflammatory mechanism by which bacteria cause gastroenteritis - Answers Ingest bacteria. Colonise enterocyte mucosa, causing loss of microvilli and mucosal invasion. Invade neighbouring enterocytes so more microvilli are lost. This results in fluid loss due to malabsorption. Micro-abscesses form as red and white cells accumulate. Symptoms of inflammatory bacterial gastroenteritis - Answers Small volume of stool containing RBC, WBC, and causative organism. Inflammation of mucosa. Impaired absorption and increased secretion. May also experience vomiting, abdominal pain, fever. What bacteria cause inflammatory gastroenteritis? - Answers Campylobacter Salmonella Shigella E. coli C. difficile Describe the non-inflammatory mechanism by which bacteria cause gastroenteritis - Answers Ingest bacteria OR toxin. Adheres to enterocyte receptors. Alters cell membrane transporters and ion channels. Loss of microvilli. Decreased absorption and increased secretion. Symptoms of non-inflammatory bacterial gastroenteritis - Answers Large volumes of watery stool containing the causative organism but no blood cells.