4 Efficacy and safety of once-daily therapeutic dose low molecular weight heparin (tinzaparin sodium) in high-risk pregnancy

2007 ◽  
Vol 119 ◽  
pp. S98
Author(s):  
F. ní Áinle ◽  
N. Appleby ◽  
A. Wong ◽  
C. Regan ◽  
B. Byrne ◽  
...  
Keyword(s):  
Molecular Weight ◽  
High Risk ◽  
Therapeutic Dose ◽  
Low Molecular Weight Heparin ◽  
High Risk Pregnancy ◽  
Low Molecular Weight ◽  
Efficacy And Safety ◽  
Once Daily ◽  
Risk Pregnancy ◽  
Tinzaparin Sodium

Efficacy and safety of once daily low molecular weight heparin (tinzaparin sodium) in high risk pregnancy

2008 ◽  
Vol 19 (7) ◽  
pp. 689-692 ◽  
Author(s):  
Fionnuala Ní Áinle ◽  
Audris Wong ◽  
Niamh Appleby ◽  
Brigitte Byrne ◽  
Carmen Regan ◽  
...  
Keyword(s):  
Molecular Weight ◽  
High Risk ◽  
Low Molecular Weight Heparin ◽  
High Risk Pregnancy ◽  
Low Molecular Weight ◽  
Efficacy And Safety ◽  
Once Daily ◽  
Risk Pregnancy ◽  
Tinzaparin Sodium

scholarly journals Safety and Efficacy of Low Molecular Weight Heparin for Thromboprophylaxis in the Elderly: A Network Meta-Analysis of Randomized Clinical Trials

2021 ◽  
Vol 12 ◽  
Author(s):  
Hui-qin Yang ◽  
Man-cang Liu ◽  
Wen-jun Yin ◽  
Ling-yun Zhou ◽  
Xiao-cong Zuo
Keyword(s):  
Molecular Weight ◽  
High Risk ◽  
Low Molecular Weight Heparin ◽  
Meta Analysis ◽  
The Elderly ◽  
Cumulative Probability ◽  
Low Molecular Weight ◽  
Efficacy And Safety ◽  
Safety And Efficacy ◽  
Safety Outcomes

Background: Given their changing pathophysiology, elderly patients carry a high risk of embolism and bleeding events; hence, use of appropriate anticoagulants is very important. Low molecular weight heparin (LMWH) is one of the most widely used anticoagulants although LMWHs differ in their anti-Xa, antithrombin, and anticoagulant activities. To date, no study has directly compared the safety and efficacy of different LMWHs in the elderly. We aimed to compare such differences by conducting a network meta-analysis.Methods: We searched the Pubmed, Embase, and Cochrane databases for randomized controlled trials (RCTs) of LMWHs that included patients ≥60 years old up to July 22, 2020. Safety outcomes included venous thromboembolism (VTE) or VTE-related death, deep thrombus embolism, and pulmonary embolism. Safety outcomes were clinically relevant bleeding, major bleeding, minor bleeding, and all-cause death. We calculated relative ratios (RR) and 95% confidence intervals (CI) for all outcomes. The cumulative ranking probabilities (SUCRA) were conducted to rank the comparative effects and safety of all LMWHs.Results: We included 27 RCTs (30,441 elderly), comprising five LMWHs. LMWH was more effective than placebo in preventing VTE or VTE-related death (RR 0.36, 95% CI 0.25–0.53) but less effective than a novel oral anticoagulant (RR 1.59, 95% CI 1.33–1.91) and safer than acenocoumarol regarding risk of clinically relevant bleeding (RR 0.67, 95% CI 0.49–0.90). However, indirect comparison of efficacy and safety of the five LMWHs showed no significant difference in our network analysis, and the subgroup analyses (such as in patients with deep venous thrombosis, cardiac disease, or age >65 years old) supported the results. The SUCRA showed that tinzaparin performed best in preventing VTE or VTE-related death (SUCRA 68.8%, cumulative probability 42.3%) and all-cause death (SUCRA 84.2%, cumulative probability 40.7%), whereas nadroparin was predominant in decreasing the risk of clinically relevant bleeding (SUCRA 84.8%, cumulative probability 77.0%).Conclusions: On present evidence, there are no significant differences in the efficacy and safety of different LMWHs for the elderly. According to the rank probability analysis, nadroparin seems to be safer for the elderly with a high risk of bleeding, whereas tinzaparin is more effective for those with low bleeding risk.

Chrono-Pharmacological Study of Once Daily Curative Dose of a Low Molecular Weight Heparin (200IU antiXa/kg of Dalteparin) in Ten Healthy Volunteers

1995 ◽  
Vol 74 (02) ◽  
pp. 660-666 ◽  
Author(s):  
P Mismetti ◽  
J Reynaud ◽  
B Tardy-Poncet ◽  
S Laporte-Simitsidis ◽  
M Scully ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Healthy Volunteers ◽  
Low Molecular Weight Heparin ◽  
Pharmacological Study ◽  
Area Under The Curve ◽  
Factor Xa ◽  
Similar Efficacy ◽  
Low Molecular Weight ◽  
Thrombin Time ◽  
Once Daily

SummaryLow molecular weight heparin (LMWH) is currently prescribed for the treatment of deep vein thrombosis at the dose of 100 IU antiXa/kg twice daily or at a dose of 175 IU antiXa/kg once daily with a similar efficacy. We decided to study the chrono-pharmacology of curative dose of LMWH once daily administrated according to the one previously described with unfractionated heparin (UFH).Ten healthy volunteers participated in an open three-period crossover study according to three 24 h cycles, separated by a wash-out interval lasting 7 days: one control cycle without injection, two cycles with subcutaneous injection of 200 IU antiXa/kg of Dalteparin (Fragmin®) at 8 a.m. or at 8 p.m. Parameters of heparin activity were analysed as maximal values and area under the curve.Activated partial thromboplastin time (APTT), thrombin time (TT), prothrombin time (PT) and tissue factor pathway inhibitor (TFPI) were higher after 8 p.m. injection than after 8 a.m. injection (p <0.05) while no chrono-pharmacological variation of anti factor Xa (AXa) activity was observed. Thus the biological anticoagulant effect of 200 IU antiXa/kg of Dalteparin seems to be higher after an evening injection than after a morning injection.A chrono-therapeutic approach with LMWH, as prescribed once daily, deserves further investigation since our results suggest that a preferential injection time may optimise the clinical efficacy of these LMWH.

scholarly journals Safety and efficacy of direct oral anticoagulants (DOACs) vs low molecular weight heparin (LMWH) in malignancy induced venous thromboembolism-a systematic review and meta analysis

2021 ◽  
Vol 10 (Supplement_1) ◽  
Author(s):  
A Abdul Razzack ◽  
N Hussain ◽  
S Adeel Hassan ◽  
S Mandava ◽  
F Yasmin ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Venous Thromboembolism ◽  
Major Bleeding ◽  
Low Molecular Weight Heparin ◽  
Oral Anticoagulants ◽  
Direct Oral Anticoagulants ◽  
Low Molecular Weight ◽  
Efficacy And Safety ◽  
Dichotomous Data ◽  
Significant Difference

Abstract Funding Acknowledgements Type of funding sources: None. Background- Low molecular weight heparin (LMWH) and direct oral anticoagulants (DOACs) have been proven to be more effective in the management of venous thromboembolism (MVTE). The efficacy and safety of LMWH or DOACs in treatment of recurrent or malignancy induced VTE is not studied in literature. Objective To compare the efficacy and safety of LMWH and  DOACs in the management of malignancy induced  VTE Methods- Electronic databases ( PubMed, Embase, Scopus, Cochrane) were searched from inception to November  28th, 2020. Dichotomous data was extracted for prevention of VTE and risk of major bleeding in patients taking either LMWH or DOACs. Unadjusted odds ratios (OR) were calculated from dichotomous data using Mantel Haenszel (M-H) random-effects with statistical significance to be considered if the confidence interval excludes 1 and p &lt; 0.05.  Results- Three studies with 2607 patients (DOACs n = 1301 ; LMWH n = 1306) were included in analysis. All the study population had active cancer of any kind diagnosed within the past 6 months. Average follow-up period for each trial was 6 months. Patients receiving DOACs have a lower odds of recurrence of MVTE as compared to LMWH( OR 1.56; 95% CI 1.17-2.09; P = 0.003, I2 = 0). There was no significant difference in major bleeding among patients receiving LMWH or DOACs  (OR-0.71, 95%CI 0.46-1.10, P = 0.13, I2 = 22%) (Figure 1). We had no publication bias in our results (Egger’s regression p &gt; 0.05). Conclusion- DOACs are superior to LMWH in prevention of MVTE and have similar major bleeding risk as that of LMWH. Abstract Figure. A)VTE Recurrence B)Major Bleeding events

Comparison of a once Daily with a twice Daily Subcutaneous Low Molecular Weight Heparin Regimen in the Treatment of Deep Vein Thrombosis

1998 ◽  
Vol 79 (05) ◽  
pp. 897-901 ◽  
Author(s):  
Bernard A. Charbonnier ◽  
Jean-Noël Fiessinger ◽  
J. D. Banga ◽  
Ernst Wenzel ◽  
Pascal d’Azemar ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Pulmonary Embolism ◽  
Deep Vein Thrombosis ◽  
Low Molecular Weight Heparin ◽  
Low Molecular Weight ◽  
Daily Regimen ◽  
Once Daily ◽  
Daily Group ◽  
Vein Thrombosis ◽  
Deep Vein

SummaryBackground: Clinical trials have been performed to compare with standard heparin a once or a twice daily regimen of low-molecular-weight heparin but no direct comparison has been done between these two low-molecular-weight heparin regimens in terms of efficacy and safety with a long-term clinical evaluation.Methods: Patients with proximal deep vein thrombosis, confirmed by venography were randomly assigned to either nadroparin (10,250 AXa IU/ml) twice daily or nadroparin (20,500 AXa IU/ml) once daily for at least 5 days. Regimens were adjusted to bodyweight. Oral anticoagulants were started on day 1 or 2 and continued for 3 months. Patients were followed up for 3 months. The composite outcome of venous thromboembolism and death possibly related to pulmonary embolism was the primary measure of efficacy. Major bleeding was the principal measure of safety. The study was designed to show equivalence between the two regimens.Results: Recurrent thromboembolic events or death possibly related to pulmonary embolism were reported in 13 patients in the once daily group (4.1%) and in 24 patients of the twice daily group (7.2%): (absolute difference 3.1% in favor of the once daily regimen; 95% confidence interval -6.6%, +0.5%). Major bleeding episodes during nadroparin treatment occurred in 4 (1.3%) and 4 patients (1.2%) in the once and twice daily groups, respectively.Conclusions: A nadroparin regimen of one injection per day is at least as effective and safe as the same total daily dose divided over two injections for the treatment of acute deep vein thrombosis.

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