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Thromboembolic events constitute a serious complication to assisted reproductive technology, and this is a case report of thrombosis after in vitro fertilisation. A 30-year-old woman had a positive pregnancy test, but she experienced shortness of breath 12 days after oocyte retrieval. D-dimer concentration was elevated, and lung scintigraphy demonstrated an infarction. Low-molecular-weight heparin (LMWH) treatment was initiated, but one week later the patient noticed pain in her left upper extremity. Despite LMWH treatment, ultrasonic examination showed thrombosis in the left subclavian and internal jugular vein.

The paper analyses the development of the total number of journal articles indexed in the Medline database published by authors affiliated to Denmark 1989-1998 in medicine compared to the development in the European Union during the same period. The publication analysis is then compared to the citation impact of articles published in the central journals indexed in Science Citation Index (ISI) 1987-1996 through use of the National Science Indicators (NIS, ISI) database. The total number of Danish journal articles has remained relatively constant compared to a 50% increase in the EU as a whole. The number of Danish articles published in central journals, however, has increased by 20% (compared to 27% for the EU) and the number of citations obtained by these articles by 58% (compared to 66% for the EU) in the 1987-1996 period. By population, Denmark ranked third in total number of articles in 1998. In conclusion, Denmark is very active in medical research but neither the quantity nor the quality of Danish medical research has increased at the same rate as the EU average.