title: Use of preventive measures for air travel-related venous thrombosis in professionals who attend medical conferences.
abstract: BACKGROUND
  Lack of guidelines for prevention of air travel-related venous thrombosis may lead to excessive use of potentially dangerous precautions.
  
  
  OBJECTIVE
  To assess the use of preventive measures for air travel-related thrombosis in professionals employed in the field of thrombosis and hemostasis and in other fields.
  
  
  METHODS
  A survey amongst delegates of the XXth ISTH Congress, the 15th ISDB Congress and the 13th Cochrane Colloquium, which all took place in Australia 2005.
  
  
  RESULTS
  Two thousand and eighty-nine questionnaires were completed (response 53%). Overall, 80% of the respondents had used preventive measures. Low-molecular-weight heparin and vitamin K antagonists were mostly used by ISTH delegates (10% vs. 1% at the other conferences). Medical doctors used more pharmacological prophylaxis (31%) than research fellows (11%) and non-clinical scientists (22%). Dutch (64%) and Asian respondents (67%) least used any prevention, whereas Israeli used most (94%). Subjects with risk factors for thrombosis more often used prophylaxis (90%) than those without (77%). In a multivariate analysis, conference, nationality, age, presence of risk factors and profession were determinants of prophylaxis use.
  
  
  CONCLUSIONS
  Major differences in the use of prophylactic measures for air travel-related thrombosis stress the need for studies of interventions and clear guidelines on prevention of air travel-related venous thrombosis.
authors.affiliation: Department of Clinical Epidemiology, Leiden University Medical Center, Leiden, the Netherlands.
authors.forename: S
authors.initials: S
authors.lastname: Kuipers
authors.forename: S C
authors.initials: SC
authors.lastname: Cannegieter
authors.forename: S
authors.initials: S
authors.lastname: Middeldorp
authors.forename: F R
authors.initials: FR
authors.lastname: Rosendaal
authors.forename: H R
authors.initials: HR
authors.lastname: Büller
mesh_terms: D000401:Aircraft; D000925:Anticoagulants / Q000008:administration & dosage*; D003226:Congresses as Topic; D017408:Guidelines as Topic; D006281:Health Occupations; D006801:Humans; D012307:Risk Factors; D011795:Surveys and Questionnaires; D014195:Travel; D020246:Venous Thrombosis / Q000209:etiology / Q000517:prevention & control*
chemical_list: D000925:Anticoagulants