Vascular Complications in Patients with Essential Thrombocythemia.
10.5045/kjh.2006.41.3.149
- Author:
Eunmi NAM
1
;
Jung Mi KWON
;
Soon Nam LEE
;
Seung Hyun NAM
;
Kyoung Eun LEE
;
Yeung Chul MUN
;
Chu Myung SEUNG
;
Se Hoon PARK
;
Soo Mee BANG
;
Eun Kyung CHO
;
Dong Bok SHIN
;
Jae Hoon LEE
Author Information
1. Department of Internal Medicine, Ewha Womans University College of Medicine, Seoul, Korea. snlee@ewha.ac.kr
- Publication Type:Original Article
- Keywords:
Essential thrombocythemia;
Thrombosis;
Hemorrhage;
Cardiovascular risk factors
- MeSH:
Diagnosis;
Follow-Up Studies;
Hemorrhage;
Humans;
Incidence;
Medical Records;
Retrospective Studies;
Risk Factors;
Thrombocythemia, Essential*;
Thrombosis
- From:Korean Journal of Hematology
2006;41(3):149-156
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
BACKGROUND: Essential thrombocythemia (ET) has a chronic course, but its main clinical features are thrombosis and hemorrhage. We evaluated the clinical features, including the vascular complications in patients with ET, during the disease courses and we determined the predictable risk factors for major vascular complications. METHODS: From 1991 to 2004, the medical records for 69 patients with ET were retrospectively reviewed for evaluating the clinical features, including the vascular complications, and the predictable risk factors for major vascular complications were analyzed. RESULTS: Major vascular thrombotic and hemorrhagic complications were observed in 16 patients (23.2%) and 6 patients (8.7%) at the time of diagnosis, and in 13 (18.8%) and 9 patients (13.0%) during follow-up. The incidence of major vascular thromboses in the older group (age >60 years) was higher than that in the younger group (< or =60 years) (34.2% vs 9.7%, respectively, P=0.016) at the time of diagnosis. During follow-up, the major vascular thrombosis risk was increased in patients with a previous thrombosis history (37.5% vs 13.2%, respectively, P=0.029) and in patients with 2 or more combined cardiovascular risk factors (44.4% vs 15.0%, respectively, P=0.035). The probability of 10-year survival in patients with thrombo-hemorrhagic complications during the disease course was lower than that in patients without complication (60.5% vs 93.7%, respectively, P=0.046). CONCLUSION: Advanced age, a previous thrombosis history and the combined cardiovascular risk factors were the risk factors for major vascular thrombosis in patients with ET. Prevention of thrombo-hemorrhagic complications is the most important therapeutic goal. Treatment strategies according to risk factors ought to be prospectively investigated.
