[show abstract][hide abstract] ABSTRACT: To determine the risk factors of delayed recanalization of isolated calf vein thrombosis (CVT).
One hundred fifty limbs of 110 patients with CVT between September 2007 and April 2010 were enrolled. We used ultrasonography for the diagnosis and follow-up examinations of CVT. We calculated recanalization rates at 1 and 3 months after initial diagnosis and analyzed the risk factors associated with delayed recanalization of CVT.
CVTs were located in the muscular calf vein in 110 (73.3%), in the deep calf vein in 18 (12%), and in both in 22 cases (14.7%). Among all CVTs, 94 limbs (63%) were symptomatic. Major risk factors for CVT were orthopedic surgery (87.3%), malignancy (21.3%), and immobilization (15.3%). Sixty-seven patients (60.9%) were treated with oral anticoagulation therapy, while 43 patients by low molecular weight heparin (n = 19) or by conservative methods including elastic compression stockings and ambulation (n = 21). The cumulative recanalization rate at 1 and 3 months was 23% and 82% and it was significantly higher in patients who underwent oral anticoagulation therapy compared with patients without oral anticoagulation therapy (84% vs. 65%, P = 0.008 by log-rank test). Malignancy (odds ratio [OR], 2.789; P = 0.043) and immobilization (OR, 4.191; P = 0.029) were independent risk factors for delayed recanalization of CVT and oral anticoagulation (OR, 0.300; P = 0.020) was an independent factor in promoting recanalization in multivariate analysis.
For patients with isolated CVT, no oral anticoagulation resulted in higher rates of delayed recanalization compared to oral anticoagulation treatment. Immobilization and having malignancy were independent risk factors for delayed recanalization.
Journal of the Korean Surgical Society. 05/2012; 82(5):306-11.
[show abstract][hide abstract] ABSTRACT: To investigate the clinical course of patients with venous malformation (VM) treated conservatively.
We reviewed retrospectively the database of our Congenital Vascular Malformation clinic and interviewed 207 patients with VM, who had been managed only conservatively. The questionnaires asked about changes in size (no change, increase in proportion to growth, increase greater than in proportion to growth, decrease) and changes in symptoms (markedly worse, moderately worse, no change, moderately improved, markedly much improved). Progression of VMs was defined as an increase greater than in proportion to growth or worsening symptoms.
Fifty patients (24 %) reported an increase in size greater than in proportion to growth and 25 patients (12 %) reported symptoms worsening from their initial symptoms. Overall, sixty-six (32 %) of the patients reported evidence of progression of their VM. A binary logistic regression model identified VM combined with capillary malformation (CM) or lymphatic malformation (LM) as an independent predictor of VM progression (OR 2.67, 95 % CI 1.29-5.53).
Based on responses to the questionnaire, the size and symptoms of VM progressed in 32 % of patients over the course of their life. VMs combined with CM or LM were the only independent predictor of progression of a VM after conservative management.
Surgery Today 04/2012; 42(10):950-5. · 0.96 Impact Factor
[show abstract][hide abstract] ABSTRACT: We attempted to investigate the prevalence and risk factors of carotid artery stenosis in Korea. Twenty thousand seven hundred twelve individuals who underwent carotid artery ultrasonography for health screening between March 2005 and March 2010 were retrospectively evaluated. The population was divided into four groups, according to the degree of stenosis, as Group A, below 29%; Group B, 30% to 49%; Group C, 50% to 74%; Group D, above 75%. The medical records of the individuals were investigated, and Fisher's exact test, chi-square tests, Kruskal-Wallis tests and a binary logistic regression model were used for statistical analysis. The prevalence of carotid stenosis was Group B, 5.5%; Group C, 0.9%; Group D, 0.1%. Old age, male gender, hypertension, diabetes mellitus and ischemic heart disease were significantly higher in Groups C and D (P = 0.001, 0.001, 0.001, 0.048, and 0.001, respectively). Among the males aged over 65 yr, the prevalence of carotid stenosis ≥ 50% and ≥ 30% were 4.0% and 18.2%, respectively. Asymptomatic carotid stenosis is not uncommon in Korea. Carotid ultrasonography is necessary for people with above-listed risk factors.
Journal of Korean medical science 09/2011; 26(9):1173-7. · 0.84 Impact Factor