title: Hematological observations as diagnostic markers in dengue hemorrhagic fever--a reappraisal.
abstract: OBJECTIVE
  To determine the utility of certain clinical and hematological parameters as diagnostic markers of dengue hemorrhagic fever (DHF), namely, (i) tourniquet test, (ii) association of bleeding manifestations with the platelet count, and (iii) "cut off" value of hematocrit diagnostic of DHF in Indian population.
  
  
  METHODS
  Prospective study.
  
  
  METHODS
  Tertiary care hospital.
  
  
  METHODS
  304 children of DHF presenting between September 1996 to December 1996.
  
  
  RESULTS
  The tourniquet test had a low sensitivity and was positive only in 61/239 (25.5%) cases. There was no statistical difference in the incidence of bleeding manifestations between thrombocytopenic and non-thrombocytopenic individuals highlighting poor association of thrombocytopenia with bleeding manifestations. A "cut off" hematocrit value of 36.3% diagnostic of DHF was estimated by discriminant analysis in Indian population.
  
  
  CONCLUSIONS
  The study highlights tourniquet test as a less sensitive diagnostic marker of DHF, poor association of thrombocytopenia with bleeding manifestations and also defines the hematocrit value diagnostic of DHF in Indian population.
authors.affiliation: Department of Pediatrics, University College of Medical Sciences and GTB Hospital, Delhi 110 095, India.
authors.forename: S
authors.initials: S
authors.lastname: Gomber
authors.forename: V G
authors.initials: VG
authors.lastname: Ramachandran
authors.forename: S
authors.initials: S
authors.lastname: Kumar
authors.forename: K N
authors.initials: KN
authors.lastname: Agarwal
authors.forename: P
authors.initials: P
authors.lastname: Gupta
authors.forename: P
authors.initials: P
authors.lastname: Gupta
authors.forename: D K
authors.initials: DK
authors.lastname: Dewan
mesh_terms: D002648:Child; D002675:Child, Preschool; D003906:Developing Countries; D006400:Hematocrit; D006801:Humans; D007194:India; D007223:Infant; D010976:Platelet Count; D011237:Predictive Value of Tests; D019595:Severe Dengue / Q000097:blood / Q000175:diagnosis*