[Follow-up studies of Hokkaido residents with XXXX ].

@entity1 @entity573 @entity583 @entity439 @entity951 @entity453 @entity574
OBJECTIVES: Sixteen national surveys of @entity573 in Japan from 1970 to 2000 have identified a total of 169,117 @entity1 with @entity573 . Based on that figure, 8,460 residents of Hokkaido probably have a history of @entity573 . It is also estimated that almost 270 Hokkaido residents would have @entity573 -related @entity453 . We underwent follow-up studies of Hokkaido residents > or = 15 years with @entity573 . METHODS: We mailed a questionnaire to the departments of internal medicine, cardiology or cardiovascular surgery inquiring about the health status of @entity1 with @entity573 at 451 hospitals with 20 or more beds in Hokkaido. RESULTS: We obtained replies from 185 hospitals (41.0%). Only 11 hospitals(5.9%) reported experience of @entity1 with @entity573 (with or without @entity453 ) at hospital follow-up. Detailed @entity1 histories for 60 @entity1 from 7 hospitals were obtained: Twenty @entity1 had @entity573 complicated with @entity453 , whereas 40 @entity1 had a history of @entity573 and no present @entity453 . Thirty-seven @entity1 without @entity453 were followed up at one hospital. The 60 @entity1 were aged from 15 to 36 years. Thirty-nine @entity1 (65%) were in the 15 to 20 year age bracket. @entity574 were recognized in 25 @entity1 (24 males and 1 female) with @entity573 (41.7%) at the onset of the disease. Twenty @entity1 had an @entity439 (s) in the left main trunk and/or the left anterior descending artery, and 13 @entity1 in the right coronary artery. There was a history of @entity583 in four @entity1 (6.7%) and nine @entity1 (15.0%) still suffered from @entity951 . Aortocoronary bypass surgery was performed in one @entity1 , whereas two @entity1 required percutaneous coronary intervention. CONCLUSIONS: Our study suggests that the majority of Hokkaido residents with @entity573 (with or without @entity453 ) are not being followed up at area hospitals. The characteristics of @entity1 who were followed up included age < or = 20 years, male sex and the presence of severe @entity453 other than circumflex involvement.
