Diagnosis of @entity1580 in Emergency Department XXXX is Rare.

@entity662 @entity1 @entity341 @entity1580
INTRODUCTION: @entity1580 is a rare event. While the most frequent symptom is @entity662 , that is a common @entity341 ( @entity341 ) chief complaint and other diseases causing @entity662 occur much more often. Furthermore, 20% of dissections are without @entity662 and 6% are painless. For these reasons, diagnosing dissections may be challenging. Our goal was to determine the number of total @entity341 and atraumatic @entity662 @entity1 for every aortic dissection diagnosed by emergency physicians. METHODS:                 <AbstractText Label="DESIGN" NlmCategory="METHODS">Retrospective cohort. SETTING: 33 suburban and urban New York and New Jersey EDs with annual visits between 8,000 and 80,000. @entity1 : Consecutive @entity1 seen by emergency physicians from 1-1-1996 through 12-31-2010. OBSERVATIONS: We identified aortic dissection and atraumatic @entity662 @entity1 using the International Classification of Diseases 9(th) Revision and Clinical Modification codes. We then calculated the number of total @entity341 and atraumatic @entity662 @entity1 for every aortic dissection, along with 95% confidence intervals (CIs). RESULTS: From a database of 9.5 million @entity341 visits, we identified 782 @entity1580 or one for every 12,200 (95% CI [11,400-13,100]) visits. The mean age of dissection @entity1 was 66  16 years and 38% were female. There were 763,000 (8%) with atraumatic @entity662 diagnoses. Thus, there is one dissection for every 980 (95% CI [910-1,050]) atraumatic @entity662 @entity1 . CONCLUSION: The diagnosis of @entity1580 by emergency physicians is rare and challenging. An emergency physician seeing 3,000 to 4,000 @entity1 a year would diagnose an aortic dissection approximately every three to four years.
