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Dengue / Dengue Hemorrhagic Fever - About Dengue / Dengue Hemorrhagic Fever
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Dengue / Dengue Hemorrhagic Fever
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About Dengue and Dengue Hemorrhagic Fever |
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The disease is caused by one of four closely related, but antigenically distinct, virus serotypes (DEN-1, DEN-2, DEN-3, and DEN-4). Due to serotype specificity infection with one serotype does not provide cross-protective immunity to other serotype, so persons are theoretically susceptible to have four dengue infections during their lifetime. Dengue viruses are transmitted from person to person by a domestic mosquito called - Aedes aegypti. Infection with dengue viruses causes clinical illness ranging from a less dangerous non-specific viral syndrome called 'Dengue fever' to severe and fatal hemorrhagic disease of 'Dengue Hemorrhagic Fever (DHF)'.  Dengue Fever The severity and risk factors for DHF depends upon : 
Strain and serotype of the infecting virus
Age
Immune status
Genetic predisposition of the patient. Dengue Hemorrhagic Fever
(DHF) is the most severe form of dengue, which can be fatal if unrecognized and not properly treated; DHF is caused by infection with the same viruses that cause dengue. |
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Posted by:
Tewari55
Posted on: 07/23/2010 The platelet count is not the only important determinant of bleeding. Indications for blood/platelet transfusion as recommended in clinical practice guidelines are: In cases with significant clinical bleeding, which require blood transfusion. Usually bleeding is > 10% of total blood volume (> 6-8 ml/kg of ideal body weight) In adults with underlying hypertension or coronary heart diseases and platelet 1.3-1.5, which is the result of liver failure: Major contributing factor for massive bleeding. There is no evidence to support the use of blood components such as platelet concentrates, fresh frozen plasma or cryoprecipitate. Its use could contribute to fluid overload. Important instructions for treatment of DHF as per WHO/SEARO guidelines: If the patient’s condition becomes worse despite giving 20ml/kg/hr crystalloid solution for one hour, replace crystalloid solution with colloid solution such as Dextran or Plasma. As soon as improvement occurs, replace with crystalloid. In case of severe bleeding; give blood transfusion @ 20ml/kg for two hours. Then give crystalloid IV fluids @ 10 ml/kg/hr for a short time (30 - 60 minutes) and later reduce the speed. If hematocrit falls, give blood transfusion 10 ml/kg and then give crystalloid IV fluids at the rate of 10 ml/kg/hr. The volume of blood administered should be just enough to raise the red blood cell concentration to normal. |
As my Mother in ICU>Please Reply