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Query: UMLS:C1291077 (bloating)
 1,674 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

In June 1983, an outbreak of waterborne giardiasis occurred in a group of 93 university students and faculty participating in a geology field course in Colorado. All cases occurred in one subgroup of persons who were heavily exposed to untreated stream water on a field trip, and the risk of illness was strongly related to the amount of untreated stream water consumed. The median incubation period from a brief exposure to the first symptom was 7 days. The authors compared symptoms and stool sample results among 31 Giardia-positive persons in the exposed group and 36 Giardia-negative participants in an unexposed group to assess several case definitions for acute giardiasis. Diarrhea, abdominal cramps, flatulence, foul-smelling stools, nausea, excessive tiredness, bloating, anorexia, and chills were each significantly more common in the first group than in the second. A giardiasis case definition of 5 days or more of diarrhea--the definition used in many epidemiologic studies of giardiasis--had a specificity of 100 percent but a sensitivity of only 32.2 percent compared with a definition based on results of stool examinations. When a case was defined as an illness lasting 7 days or more, with a combination of two or more of six symptoms (diarrhea, flatulence, foul-smelling stools, nausea, abdominal cramps, and excessive tiredness), sensitivity rose to 73 percent, with a specificity of 88 percent. Such a case definition may be an improvement over that of 5 days of diarrhea, especially in outbreaks where there is good laboratory documentation that Giardia is the etiologic agent. The definition should be validated in other outbreaks and in situations where giardiasis must be distinguished from gastrointestinal disease caused by other agents.
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PMID:Acute giardiasis: an improved clinical case definition for epidemiologic studies. 199 3

1422 faecal samples sent by general practitioners for routine parasitological examination were surveyed in 3 months. Of the 10.8% short-listed for special examination for cryptosporidium oocysts, 14 (9.1%) were positive. Charcot-Leyden crystals were not associated with cryptosporidiosis. All 14 patients had symptoms of gastrointestinal infection, which seemed to be related to a trip abroad. The incubation period varied between 4 and 12 days. Clinically cryptosporidiosis could not be distinguished from giardiasis, but its duration was shorter (median 10 days), strong abdominal pain and cramps were commoner, and bloating, anorexia, and weakness were less common. The disease can be diagnosed by identification of oocysts in faecal samples that have undergone formalin-ether concentration. There is no specific treatment for it, and recovery is spontaneous.
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PMID:Cryptosporidium: a frequent finding in patients with gastrointestinal symptoms. 613 70

We present the case of a 32-year-old French man who presented with morning nausea, bloating, frequent flatulence, burping, occasional pyrosis, and alternating diarrhea and constipation two weeks after a trip to Morocco. The diagnosis was established by a parasitological stool exam that revealed cysts of Giardia lamblia. He was successfully treated with tinidazole.
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PMID:Apyretic gastrointestinal disorders due to giardiasis contracted in Morocco. 2476 1