Acute Infectious Diarrhoea in Children – The Role of Drug Treatment

European Gastroenterology & Hepatology Review, 2011;7(1):31-36

Abstract

Acute infectious diarrhoea is a common problem with a wide spectrum of clinical severity in children. Replacing the fluid and electrolytes lost, preferably by using an oral rehydration solution, and continuing to feed the child with age-appropriate foods is the basis for the treatment of this disease. This article reviews the role of antimicrobials and non-antimicrobial antidiarrhoeal drugs in the treatment of children with acute infectious diarrhoea. With the exception of cholera, routine use of antimicrobials to treat watery diarrhoea cases is neither necessary nor appropriate. Antimicrobials are indicated in invasive diarrhoeas when Shigella infection is suspected. Among the non-antimicrobial antidiarrhoeal agents, cholestyramine, loperamide and bismuth subsalicylate do not have a worthwhile additive effect over the clinical course of the disease and are not free from potentially serious side effects when used in children. Racecadotril and diosmectite are two effective and safe antidiarrhoeal agents that can be used in children, in addition to oral rehydration, to shorten diarrhoea duration and to reduce its volume – two clinical outcomes that physicians and parents expect in the treatment of this disease. New antidiarrhoeal agents are in development, pending testing in clinical trials.
Keywords
Diarrhoea, oral rehydration, antidiarrhoeals, ciprofloxacin, cholestyramine, loperamide, bismuth subsalicylate, diosmectite, racecadotril, cholera, shigella, rotavirus
Disclosure The author has no conflicts of interest to declare.
Received: October 09, 2010 Accepted October 20, 2010
Correspondence: Eduardo Salazar-Lindo, Av. El Polo 740, Of. C-410, Surco, Lima 33, Peru. E: esalazar@gastrolabperu.com

Acute infectious diarrhoea is a very common disorder in children, and has a wide spectrum of clinical severity. Sometimes it takes the form of a mild episode that recedes after a few hours; however, at other times it may quickly lead to dehydration, acidosis and potassium depletion or to sepsis, or it may persist for several days, causing nutritional wasting. Because of its abrupt onset and frequent association with alarming symptoms such as fever and vomiting, an episode of diarrhoea carries great concern among family members, even in mild cases. For instance, it has been estimated that in North America and Europe, 4–8% of all emergency room visits among children under five years of age are for a case of acute diarrhoea.1,2 In developing countries, the disease burden is further increased by a high rate of hospital admissions and deaths from early or late complications of the disease.3,4 Consequently, prompt, effective and safe treatment of children with acute diarrhoea is essential to their wellbeing. This article aims to discuss the role of both antimicrobial and non-antimicrobial drugs in the treatment of children with acute infectious diarrhoea within the context of using oral rehydration as the mainstay of appropriate clinical management.

Clinical Syndromes
Diarrhoea is usually recognised as the passage of stools that are looser and more frequent than normal. Clinically, diarrhoeic stools can appear with or without mucus and blood. The term ‘watery diarrhoea’ is generally used when no blood or mucus is present in the stools; ‘dysentery’ or ‘bloody diarrhoea’ is used otherwise. Acute diarrhoea is generally a self-limiting disease lasting from one to two tofive to seven days. However, occasionally diarrhoea may continue regardless of the treatment provided; the term ‘persistent diarrhoea’ is used to refer to an episode of diarrhoea that lasts for 14 days or more. In some cases diarrhoea persists because the infectious agent has the ability to stay in the gut for a long time; in other cases it is because the host is too young or malnourished and unable to mount a rapid and effective healing response to the initial infectious insult.5

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