[Show abstract][Hide abstract] ABSTRACT: Key symptoms observed during the febrile phase of dengue may identify patients who are likely to progress to severe disease.
To test this hypothesis, we examined the relationships between symptoms reported by patients at presentation and the development of severe outcomes.
Retrospective analysis of data recorded prospectively in 560 adult dengue patients admitted to an emergency department. A logistic regression analysis was used to quantify the association between symptoms reported at presentation and outcome.
Plasma leakage was observed in 95 patients (17%), severe thrombocytopenia (platelet counts <20 x 10(9)/L) in 93 patients (16.6%) and acute hepatitis in 42 patients (7.5%). Severe thrombocytopenia developed in 57% of patients with plasma leakage and 40.5% of patients with hepatitis. Patients who developed a plasma leakage syndrome were older, mainly male, and reported more often an abdominal pain and a cough. Diarrhea and taking paracetamol >60 mg/kg/day before admission were associated with the development of acute hepatitis. Seven patients died. The mortality rate was 6/95 (6.3%) in patients who developed plasma leakage, 3/42 (7.1%) in patients who developed hepatitis, 5/93 (5.4%) in patients with severe thrombocytopenia, and 3/12 (25%) in the patients who demonstrated together all these severe manifestations.
Plasma leakage, severe thrombocytopenia and acute hepatitis identified subgroups of adult dengue patients with increased mortality rates. Key symptoms reported by the patients at presentation such as abdominal pain, cough or diarrhea were significantly associated with the development of severe manifestations and should be considered as warning signs.
No preview · Article · Mar 2010 · Journal of clinical virology: the official publication of the Pan American Society for Clinical Virology
[Show abstract][Hide abstract] ABSTRACT: Knowing about the clinical aspects of dengue in endemic zones is essential to implementation of appropriate case management protocols and public health interventions.
The authors made a 4-year prospective, observational study of dengue-infected patients admitted to the emergency department of the Fort-de-France University Hospital.
Two hundred and sixty-three male and 297 female patients were included. The median age was 37 years (range: 14-91). The diagnosis was based on a positive RT-PCR (463 patients) or on the presence of specific IgM (97 patients). Two hundred and seventy-seven patients (49.5%) presented with dengue fever without complications. According to WHO criteria, 95 patients (17%) developed plasma leakage, including 39 patients (7%) diagnosed with DHF, and 10 (1.8%) diagnosed with DSS. Among the other patients without plasma leakage, 84 (15%) had isolated thrombocytopenia, 14 (2.5%) had internal bleeding, and 90 (16%) had unusual manifestations. Seven patients died (1.3%): fulminant hepatitis (two), myocarditis (one), encephalitis (one), acute respiratory failure (one), gangrenous cholecystitis (one), and post-traumatic intracranial hemorrhage (one). The other patients recovered. Seven patients were pregnant (1.3%) from 6 to 27 weeks of amenorrhea and carried their pregnancy to term without complications.
With this experience, we were able to develop appropriate case management protocols for patients during dengue epidemics.
[Show abstract][Hide abstract] ABSTRACT: The practice of platelet (PLT) transfusions has been adopted into the standard clinical practice in many dengue-endemic countries. Because many patients were found to have received unnecessary PLT transfusions, the development of guidelines for the management of dengue patients with thrombocytopenia has become a necessity.
An emergency department-based prospective observational study was conducted in Martinique during a dengue outbreak in adult patients presenting with an acute febrile illness. Patients with severe bleeding and/or who underwent invasive intensive care procedures or emergency surgery were given PLT transfusion to achieve PLT counts of more than 50 x 10(9)/L. PLT transfusion was also considered for patients with PLT counts of less than 5 x 10(9)/L and for those with associated risk factors and PLT counts of less than 20 x 10(9)/L.
A total of 350 patients were admitted with confirmed dengue infections. Most of them had secondary serotype-2 infections. PLT counts of less than 50 x 10(9)/L were recorded in 165 patients (47.1%). PLT transfusion was administered to 9 patients with thrombocytopenia. The indications included severe bleeding (5 cases), invasive procedures (3 cases), emergency surgery (1 case), and/or associated risk factors (2 cases). The median time duration from the onset of fever to PLT transfusion was 6 days (range, 4-10 days). The median amount of PLTs transfused was 3.66 x 10(11) (range, 2.8 x 10(11)-13.2 x 10(11)). The median PLT yield was +12.4% (range, -3.9% to +67.1%). Three patients died. All other patients recovered during the second week after the onset of fever.
A restrictive strategy for PLT transfusion based on clinical features and low PLT count thresholds proved to be feasible and safe for adult dengue patients.