Wednesday, July 20, 2011

TROPICAL DESEASES 3



AMEBIASIS

1.2 CLINICAL FEATURES

Intestinal Amebiasis:
- Mild diarrhea, with periodic spontaneous exacerbations,
there are remissions,and running a chronic course is the most common
presentation.
* The stools are loose, laden with mucus and
* Tenesmus is a prominent symptom.
* Systemic symptoms are not prominent.
* In tropical countries acute dysentery with bloody
diarrhoea, dehydration, systemic symptoms and electrolyte
losses may occur.
* Right lower quadrant tenderness may simulate acute
appendicitis.
* There may also be tenderness along the line of the colon
which may also be palpable along its length.

1.3 COMPLICATIONS

1. Perforation with peritonitis : Perforation may result from
transmural necrosis of the affected bowel, the peritoneal
cavity is grossly contaminated with feaces.
* The highest incidence of perforation in intestinal
amebiasis is seen in women during the puerperium.
* Peritonitis may also occur in the absence of perforation
by spread of infection through friable and edematous
wall of the bowel.
* Occasionally localisation of the perforation produces
a paracolic abscess and
* Rarely, an internal fistula is formed.

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