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Extended-Duration Treatment of Superficial Vein Thrombosis of the Lower Limbs with Tinzaparin
Konstantinos M. Nikolakopoulos,Stavros K. Kakkos,Chrysanthi P. Papageorgopoulou,Ioannis A. Tsolakis 대한혈관외과학회 2018 Vascular Specialist International Vol.34 No.1
Purpose: To identify risk factors for recurrent thromboembolic events (RTEs) and define the optimum duration of treatment with tinzaparin in patients with superficial vein thrombosis (SVT) of the lower limbs. Materials and Methods: A total of 147 consecutive patients with significant SVT were treated with subcutaneously administered tinzaparin. The composite primary endpoint of the study was RTE, deep-vein thrombosis (DVT) and/or pulmonary embolism (PE) at 120 days. Patients were stratified into group A, where patients received a variable dose of tinzaparin for up to 60 days (n=98), and a subsequent group B-ext, where patients received a standardized intermediate dose of tinzaparin (n=49) for 90 days. Results: RTEs occurred in 15/147 patients (10.2%), including recurrent SVT (n=10), DVT (n=4) and fatal PE (n=1). RTEs were less frequent in group B-ext (0% vs. 15.3% for group A, P=0.004), a difference that remained significant at the oneyear follow-up. Clinically extensive SVT was an independent predictor for RTEs (hazard ratio, 5.94; 95% confidence interval, 2.05-17.23; P=0.001, Cox regression). Predictors or DVT or PE in group A included clinically extensive SVT (P=0.004), absence of local pain (P=0.023) and the ultrasound findings of superficial axial vein thrombosis (any, P=0.006 or isolated, P=0.036) and multiple thrombosed superficial venous sites (P<0.001). Conclusion: An extended three-month regimen of tinzaparin in patients with SVT of the lower limbs is more effective than a shorter course and may be desirable in patients with risk factors.
Stavros K. Kakkos,George C. Lampropoulos,Konstantinos M. Nikolakopoulos,Ioannis A. Tsolakis,Spyros I. Papadoulas,Evangelos C. Papachristou,Dimitrios Goumenos,Miltos K. Lazarides 대한혈관외과학회 2018 Vascular Specialist International Vol.34 No.3
Purpose: There is currently debate if brachio-basilic vein fistula (BBVF) should be performed as a one-stage or two-stage procedure. The aim of the present study was to perform a systematic review and meta-analysis on BBVF staging.Materials and Methods: On February 25, 2016, a search for randomized-controlled trials (RCTs) on BBVF procedures was performed in MEDLINE and Scopus data-bases. Meta-analyses were performed with fixed-effect or random-effects models as appropriate with risk ratios (RRs). The primary efficacy and safety outcome measures were BBVF maturation and development of complications, respectively. Specific types of complications, including loss of functional secondary patency and long-term complications were all secondary outcome measures.Results: We identified three RCTs reporting on 126 patients. Maturation failure of two-stage BBVFs (3/47, 6.4%) was less frequent than one-stage BBVFs (16/79, 20.3%; RR, 0.27; P=0.02). Complication rates of two-stage and one-stage BBVFs were similar (RR, 0.80; P=0.54), but on sensitivity analysis these were less likely to occur with two-stage BBVFs (37% vs. 69% for one-stage BBVFs; RR, 0.57; P=0.03). Two-stage BBVFs were less likely to lose their functional secondary patency (21.3% vs. 31.6% for one-stage BBVFs; RR, 0.61; P=0.11). This non-significant trend be-came significant (RR, 0.36; P=0.02) on sensitivity analysis. There was no difference in specific complication rates of the two study groups. Conclusion: Among candidates for BBVF fistula, there is evidence to suggest that two-stage BBVFs achieve higher maturation rates compared to one-stage BBVFs. The evidence for difference in long-term secondary patency is less robust, calling for further research.
Intrapulmonary Solitary Fibrous Tumor Masquerade Sigmoid Adenocarcinoma Metastasis
Timothy Sakellaridis,Ioannis Koukis,Theodora Marouflidou,Ioannis Panagiotou,Anastasios Piyis,Konstantinos Tsolakis 대한흉부외과학회 2013 Journal of Chest Surgery (J Chest Surg) Vol.46 No.4
Solitary fibrous tumor is a rare spindle cell mesenchymal tumor entity, with either benign or malignant behavior that cannot be accurately predicted by histological findings. An intrapulmonary site of origin is even rarer. We report a case of a 51-year-old woman in whom an abnormal nodule in the lower right lung was detected during staging for sigmoid adenocarcinoma. The nodule was excised and pathological examination revealed an intrapulmonary solitary fibrous tumor.
Retained Subintimal Pellet in a Carotid Artery
Manousi Maria,Sarantitis Ioannis,Papadoulas Spyros,Diamantopoulos Athanasios,Kakkos K. Stavros,Lampropoulos George,Tsolakis A. Ioannis 한국심초음파학회 2011 Journal of Cardiovascular Imaging (J Cardiovasc Im Vol.19 No.2
A shotgun pellet is depicted in the present image in a carotid artery under the intima, which remained intact without local complications for up to six months. There is lack of data regarding the natural history of such a carotid pellet, but the experience from the myocardium is that, in the absence of infection, completely embedded missiles are usually asymptomatic, tolerated well and may be left in place.
Utilizing Machine Learning on Freight Transportation and Logistics Applications: A review
Kalliopi Tsolaki,Thanasis Vafeiadis,Alexandros Nizamis,Dimosthenis Ioannidis,Dimitrios Tzovaras 한국통신학회 2023 ICT Express Vol.9 No.3
This review article explores and locates the current state-of-the-art related to application areas from freight transportation, supply chain and logistics that focuses on arrival time, demand forecasting, industrial processes optimization, traffic flow and location prediction, the vehicle routing problem and anomaly detection on transportation data. This review categorizes the related works according to machine learning methodologies so as to present the methods’ evolution through time, their combinations and their connection with the various applications in the specified fields. Thus, a reader would effortlessly get insights about the current state-of-the-art related to machine learning in freight transportation and related application areas.