[Relationship between weather and incidence of pulmonary embolism. Longitudinal study of case histories occuring during a 50 year period (author's transl)].

1. Various weather factors were examined which were operative during the occurence of lung embolism in 915 patients of the Surgical Clinic of the University of Jena for a period of 50 years (1917 to 1966). 2. No relationship could be found between the incidence of pulmonary embolism and temperature (maximal and minimal values, or temperature differences) or with atmospheric pressure. 3. The incidence of pulmonary embolism is significantly higher at days with high rainfall (above 10 mm/m2) and high average humidity (8-10 Torr) values. 4. Thromboembolic complications are less frequent at average values for air humidity (6-7 Torr), at days with a relative air humidity of 70% and with lower rainfall.