scholarly journals Hyperhomocysteinemia and C677T MTHFR Genotype in Patients With Retinal Vein Thrombosis

2009 ◽  
Vol 16 (5) ◽  
pp. 549-553 ◽  
Author(s):  
Gianluca Sottilotta ◽  
Simona Maria Siboni ◽  
Caterina Latella ◽  
Vincenzo Oriana ◽  
Ermelinda Romeo ◽  
...  
Keyword(s):  
Risk Factor ◽  
Methylenetetrahydrofolate Reductase ◽  
Mthfr C677t ◽  
Control Group ◽  
Vein Thrombosis ◽  
Mthfr Genotype ◽  
C677t Mthfr ◽  
High Prevalence ◽  
Recent Diagnosis ◽  
Deep Vein

Introduction: Elevated homocysteine (Hcy) is associated with the risk of deep vein thrombosis, pulmonary embolism, ischemic heart disease, and stroke. Several studies have suggested that hyperhomocysteinemia (HHcy) may predispose to retinal vein thrombosis (RVT) development. The aim of this study is to investigate the relationship between Hcy, C677T methylenetetrahydrofolate reductase (MTHFR) genotype, and RVT in patients compared with controls. Materials and Methods: We evaluated the Hcy plasma level of 3114 consecutive participants in 2 Italian centers during a 2-year period. Hyperhomocysteinemia was found in 99 patients and 136 healthy participants. Of the 99 patients, 20 had RVT with a high prevalence of HHcy in the RVT subgroup (20.2%). This result suggested a possible relationship between HHcy and RVT development. We investigated 105 consecutive patients with recent diagnosis of RVT, and we compared them with 226 healthy controls to evaluate whether HHcy may be a risk factor for RVT. Results: the prevalence of HHcy was higher in patients compared with controls (34.3% vs 14.2%; P < .001). The MTHFR C677T genotype was found in 69 of 105 (65.7%) patients with RVT (heterozygosity: 40 of 105 and homozygosity: 29 of 105). The control group showed the presence of MTHFR C677T genotype in 169 of 226 participants (74.8%; heterozygosity: 100 of 226 and homozygosity: 69 of 226) without difference between the 2 groups (P = .08). Conclusion: our study suggests that HHcy is a possible risk factor for RVT development, while no association was found between RVT and the C677T MTHFR genotype.

Prevalence of asymptomatic lower limb venous thrombosis in infertile women with thrombophilic disorders

2014 ◽  
Vol 30 (7) ◽  
pp. 449-454
Author(s):  
Luca Costanzo ◽  
Luigi Di Pino ◽  
Mario Ragusa ◽  
Sergio Buccheri ◽  
Andrea Sole ◽  
...  
Keyword(s):  
Venous Thrombosis ◽  
Prognostic Value ◽  
Duplex Ultrasound ◽  
Lower Limbs ◽  
Control Group ◽  
Infertile Women ◽  
Vein Thrombosis ◽  
Venous Circulation ◽  
High Prevalence ◽  
Deep Vein

Objective We sought to assess the prevalence of asymptomatic venous thrombosis in infertile women with thrombophilic disorders (TDs). Methods and results A total of 73 infertile women with TDs underwent duplex ultrasound scan to evaluate superficial and deep venous circulation of lower limbs. A control group of 35 infertile women without TDs was included. A single TD was found in 13 (17.8%) subjects, and 40 (54.8%) women presented a combined defect (more than three alterations). No residual mural thrombosis (RT) was noted in any deep veins. We found RT in 48 (65.8%) patients of TD group, while no RT was found in the control group ( p < 0.0001). None of the clinical and prothrombotic factors were predictors of RT (all p > 0.20), and frequency of TD did not correlate with multi-vessel RT ( p = 0.252). Conclusions No signs of deep vein thrombosis but high prevalence of superficial RT is present in infertile women with TDs. Further studies are needed to assess the prognostic value of our findings.

Superficial thrombophlebitis in varicose vein disease: the particular role of methylenetetrahydrofolate reductase

2010 ◽  
Vol 26 (4) ◽  
pp. 135-139 ◽  
Author(s):  
C Wilmanns ◽  
A Casey ◽  
H Schinzel ◽  
P K Walter
Keyword(s):  
Varicose Vein ◽  
Methylenetetrahydrofolate Reductase ◽  
Protein S ◽  
Mthfr C677t ◽  
Factor V ◽  
Mthfr C677t Polymorphism ◽  
Mthfr Polymorphisms ◽  
Vein Thrombosis ◽  
Deep Vein ◽  
Vein Disease

Background The purpose of this study was to compare the genetic background of superficial (SVT) and deep vein thrombosis (DVT). Methods Factor V (FV)-Leiden (G16891A)-, factor II(G20210A)-mutations, protein C- and S, as well as methylenetetrahydrofolate reductase (MTHFR) polymorphisms at C677T and A1298C, and serum homocysteine levels (hcy) were determined in 29 patients with SVT and 26 with DVT. Findings FV- and –II-mutations were less frequent in patients with SVT (2/3) compared with DVT (9/5), respectively ( P < 0.002 in case of FV). However, the frequency of the MTHFR C677T polymorphism was significantly higher in patients with SVT compared with DVT (CT 12 versus 10, and TT 7 versus 1, respectively, P << 0.001). The distribution of the MTHFR A1298C genotype and serum hcy levels was similar in both patient groups. Protein S-deficiency was recorded once (SVT). Interpretation These results suggest that the MTHFR C677T-mutant genetically predisposes its carriers to SVT which may contribute to hypercoagulation in pre-existing varicose vein disease.

Deep Vein Thrombosis and Fibrinolysis

1991 ◽  
Vol 66 (04) ◽  
pp. 426-429 ◽  
Author(s):  
Marcel Levi ◽  
Anthonie W A Lensing ◽  
Harry R Büller ◽  
Paolo Prandoni ◽  
Gerard Dooijewaard ◽  
...  
Keyword(s):  
Deep Vein Thrombosis ◽  
Plasminogen Activator ◽  
Plasminogen Activator Inhibitor ◽  
Tissue Type ◽  
Controlled Study ◽  
First Episode ◽  
Control Group ◽  
Vein Thrombosis ◽  
Type Plasminogen Activator ◽  
Deep Vein

SummaryIn the present study 57 consecutive patients with a first episode of venographically proven deep vein thrombosis were investigated to evaluate the release of tissue-type plasminogen activator (t-PA) and of urokinase-type plasminogen activator (u-PA) in response to DDAVP stimulation as well as the resting plasminogen activator inhibitor (PAI) concentration, comparing this to the results obtained in 66 similar patients with a clinical suspicion of thrombosis but with a normal venogram. All assays were performed without knowledge of the patient's status.Four patients in the deep vein thrombosis-group (7%) had an absent u-PA antigen response upon DDAVP infusion, while a normal response was observed in all control subjects. Patients and controls showed similar increases in t-PA antigen level upon DDAVP. High resting PAI antigen levels were encountered in 5 patients in the deep vein thrombosis-group (9%) and in 6 subjects in the control group (9%).The results from this controlled study indicate that a defective release of u-PA may occur in patients with deep vein thrombosis and may have pathogenetic significance. Furthermore it is concluded that elevation of PAI levels cannot be considered as a specific risk factor for venous thrombosis.

Controlled Trial of the Sequential Use of Streptokinase and Ancrod in the Treatment of Deep Vein Thrombosis of Lower Limb

1977 ◽  
Vol 37 (02) ◽  
pp. 222-232 ◽  
Author(s):  
D. A Tibbutt ◽  
C. N Chesterman ◽  
E. W Williams ◽  
T Faulkner ◽  
A. A Sharp
Keyword(s):  
Deep Vein Thrombosis ◽  
Clinical Improvement ◽  
Anticoagulant Therapy ◽  
Lower Limb ◽  
Oral Anticoagulant ◽  
Controlled Trial ◽  
Oral Anticoagulant Therapy ◽  
Control Group ◽  
Vein Thrombosis ◽  
Deep Vein

SummaryTreatment with streptokinase (‘Kabikinase’) was given to 26 patients with venographically confirmed deep vein thrombosis extending into the popliteal vein or above. Treatment was continued for 4 days and the patients were allocated randomly to oral anticoagulant therapy or a course of treatment with ancrod (‘Arvin’) for 6 days followed by oral anticoagulant therapy. The degree of thrombolysis as judged by further venographic examination at 10 days was not significantly different between the 2 groups. The majority of patients showed clinical improvement but there was no appreciable difference between the groups at 3 and 6 months. Haemorrhagic complications were a more serious problem during the period of treatment with ancrod than during the equivalent period in the control group.

Features of Thrombi and Diagnostic Accuracy of Impedance Plethysmography in Symptomatic and Asymptomatic Deep Vein Thrombosis

1993 ◽  
Vol 70 (02) ◽  
pp. 266-269 ◽  
Author(s):  
Giancarlo Agnelli ◽  
Benilde Cosmi ◽  
Stefano Radicchia ◽  
Franca Veschi ◽  
Enrico Boschetti ◽  
...  
Keyword(s):  
Deep Vein Thrombosis ◽  
Diagnostic Accuracy ◽  
High Sensitivity ◽  
Impedance Plethysmography ◽  
Surveillance Programme ◽  
Vein Thrombosis ◽  
Asymptomatic Patients ◽  
High Prevalence ◽  
The Mean ◽  
Deep Vein

SummaryImpedance plethysmography (IPG) has high sensitivity and specificity in patients with symptomatic deep vein thrombosis (DVT) while it fails to detect asymptomatic DVT. The aim of this study was to determine whether the features of thrombi such as location, size and occlusiveness could explain the different accuracy of IPG in symptomatic and asymptomatic DVT patients. One-hundred and seventeen consecutive outpatients with a clinical suspicion of DVT and 246 consecutive patients undergoing hip surgery were admitted to the study. In symptomatic patients IPG was performed on the day of referral, followed by venography, while in asymptomatic patients IPG was performed as a surveillance programme, followed by bilateral venography.A venography proved DVT was observed in 37% of the symptomatic patients and 34% of the asymptomatic limbs. A significantly higher proportion of proximal DVTs was found in symptomatic patients than in asymptomatic patients (78% vs 46%; p = 0.001). The mean Marder score, taken as an index of thrombus size, was significantly higher in symptomatic patients than in asymptomatic patients (19.0 vs 9.6; p = 0.0001). A significantly higher proportion of occlusive DVTs was observed in symptomatic than in asymptomatic patients (69% vs 36%; p = 0.001).We conclude that the unsatisfactory diagnostic accuracy of IPG in asymptomatic DVT is due to the high prevalence of distal, small and non occlusive thrombi. Such thrombi are unlikely to cause a critical obstruction of the venous outflow and therefore to produce a positive IPG.

Low-Dose Heparin and Deep-Vein Thrombosis after Total Hip Replacement

1976 ◽  
Vol 36 (01) ◽  
pp. 157-164 ◽  
Author(s):  
P. M Mannucci ◽  
Luisa E. Citterio ◽  
N Panajotopoulos
Keyword(s):  
Deep Vein Thrombosis ◽  
Total Hip Replacement ◽  
Hip Replacement ◽  
Low Dose ◽  
Control Group ◽  
Total Hip ◽  
Vein Thrombosis ◽  
Dose Heparin ◽  
Deep Vein ◽  
Low Dose Heparin

SummaryThe effect of subcutaneous low-dose heparin on postoperative deep-vein thrombosis (D. V. T.) (diagnosed by the 125I-labelled fibrinogen test) has been investigated in a trial of 143 patients undergoing the operation of total hip replacement. Two randomized studies were carried out: in one the scanning for D.V.T. was carried out daily for 7 days post operatively and in the other for 15 days. In both, the incidence of D.V.T. was significantly lower in the heparin-treated patients (P<0.005). Bilateral D.V.T. was also prevented (P<0.05), through the extension of D.V.T. to the distal veins of the thigh was not significantly reduced. Heparin treatment was, however, followed by a higher incidence of severe postoperative bleeding (P< 0.02) and wound haematoma formation (P< 0.005), and the postoperative haemoglobin was significantly lower than in the control group (P<0.005). A higher number of transfused blood units was also needed by the heparin treated patients (P<0.001).

scholarly journals INVESTIGATING EFFECT OF NURSING INTERVENTIONS, BASED ON WELLS SCORE RESULTS, ON THE INCIDENCE OF DEEP VEIN THROMBOSIS IN PATIENTS ADMITTED TO THE INTENSIVE CARE UNIT

2018 ◽  
Vol 11 (5) ◽  
pp. 377
Author(s):  
Morteza Habibi Moghadam ◽  
Marzieh Asadizaker ◽  
Simin Jahani ◽  
Elham Maraghi ◽  
Hakimeh Saadatifar ◽  
...  
Keyword(s):  
Intensive Care Unit ◽  
Intensive Care ◽  
Deep Vein Thrombosis ◽  
Intervention Group ◽  
Control Group ◽  
Nursing Interventions ◽  
Vein Thrombosis ◽  
Wells Score ◽  
Deep Vein ◽  
Pitting Edema

 Objective: Venous thromboembolism, including deep vein thrombosis (DVT) and pulmonary embolism (PE), is a common complaint in critically ill patients. Therefore, the present study was conducted to determine the effect of nursing interventions, based on the Wells results, on the incidence of DVT in intensive care unit (ICU) patients.Methods: The present clinical trial was conducted on 72 ICU patients without DVT and PE who met the inclusion criteria according to Wells score in Dr. Ganjavian Hospital, Dezful in 2012. The participants were investigated and randomly divided into intervention (n=36) and control groups (n=36). The intervention group received preventive nursing measures based on the risk level determined by the Wells score, and routine therapeutic interventions were performed for the control group. Then, patients were evaluated using Wells score, D-dimer testing, and Doppler sonography on the 1st, 5th, and 10th days. Data were finally coded and entered into SPSS version 23. Data analysis was performed using Chi-square, Fisher’s exact, and Mann–Whitney U tests.Results: The incidence of DVT in both groups showed that 2 patients of the control group who were identified to be at risk using the Wells score were diagnosed with DVT while none of the patients of the intervention group experienced DVT. The present study showed that 22.2% of the patients of the control group suffered from non-pitting edema, which was significantly different from the intervention group (p=0.005).Conclusion: The results of the present study showed that using the Wells score for early identification of the at-risk patients and nursing interventions based on this score’s results is helpful in the prevention of DVT. Appropriate nursing interventions were also effective in reducing the incidence of non-pitting edema in the lower extremities.

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