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Preexisting morbidity as an independent risk factor for perioperative acute thromboembolism syndrome
Mutsuhito Kikura1, Tomosue Takada, Shigehito Sato
1Department of Anesthesiology and Pain Clinic, Seirei-Mikatabara General Hospital, Hamamatsu, Japan. mkikura@hotmail.com
Hypothesis:
Preexisting morbidities are risk factors for perioperative arterial or venous thromboembolic events and subsequent death within 30 postoperative days.
Design:
Prospective cohort study.
Setting:
University-affiliated general hospital.
Patients:
A total of 21,903 surgery patients treated from January 1, 1991, through December 31, 2002.
Main Outcome Measures:
Independent risk factors for perioperative arterial or venous thromboembolic events.
Results:
History of atrial fibrillation and coronary artery disease increased the risk of myocardial infarction (odds ratio [95% confidence interval], 4.3 [2.8-6.7]). History of stroke increased the risk of stroke (2.4 [1.4-4.1]) and death (4.7 [1.3-17.3]). Diabetes mellitus increased the risk of myocardial infarction (2.1 [1.3-3.2]), and hyperuricemia increased the risk of stroke (3.5 [1.2-9.8]), and both increased the risk of death (4.3 [1.3-14.1] and 11.8 [2.2-63.5], respectively). History of myocardial infarction increased the risk of deep vein thrombosis (7.7 [1.7-34.7]). Cancer increased the risk of all thromboembolism (2.4 [1.9-3.2]). Trend analysis showed that preexisting morbidities will increase 1.5-fold and thromboembolic events will increase 3-fold during the next decade.
Conclusion:
Cardiac and cerebrovascular diseases, metabolic diseases, and cancer are becoming increasingly high-risk comorbidities for perioperative acute thromboembolism syndrome.
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