High dose subcutaneous unfractionated heparin for prevention of venous thromboembolism in overweight neurocritical care patients View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

2015-10

AUTHORS

Sophie Samuel, Emitseilu K. Iluonakhamhe, Eileen Adair, Natalie Macdonald, Kiwon Lee, Teresa A. Allison, Huimahn A. Choi

ABSTRACT

Timing and dosing of chemical venous thromboembolism (VTE) prophylaxis in brain injury is controversial. Risk of bleeding while using high dose unfractionated heparin (UFH) in overweight patients to prevent VTE is also unknown. The purpose of this study was to describe the use of subcutaneous heparin 7500 units for VTE prophylaxis in overweight patients. This was a retrospective study comparing patients over 100 kg who received either 7500 units Q8 h (n = 141) (high dose group, HDG), or 5000 units Q8 h (n = 257) (traditional dose group, TDG), of UFH subcutaneously. Both groups had similar rates of bleeding complications. The incidence of drop in hemoglobin by two points in any 24 h was 14 % (20/141) HDG versus 11 % (28/257) TDG; P = 0.33. Hemoglobin drop by two points from baseline was 57 % (81/141) HDG versus 51 % (132/257) TDG; P = 0.24. The need for pRBC transfusion was 26 % (36/141) HDG versus 20 % (52/257) TDG; P = 0.22. An increase in aPTT from baseline by two times was 4 % (5/141) HDG versus 4 % (9/257) TDG, P = 0.59. Discontinuation of heparin therapy for association with progressive bleeding was not documented in any patients. No differences in minor bleeding complications were observed. There was no difference in the incidence of VTE: 5.7 % (8/141) HDG versus 9.3 % (24/257) TDG; P = 0.2. In univariate and multivariable logistic regression analysis, only the time of the initiation of heparin after admission was associated with the occurrence of VTE (median, IQR) 46 h (17-86) HDG versus 105 h (56-167) TDG; OR 1.2 (1.1-1.3); P < 0.001. High dose subcutaneous UFH was not associated with an increased risk of bleeding, nor did it decrease the incidence of VTE in overweight patients. More... »

PAGES

302-307

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/s11239-015-1202-x

DOI

http://dx.doi.org/10.1007/s11239-015-1202-x

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1006561572

PUBMED

https://www.ncbi.nlm.nih.gov/pubmed/25736986


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44 schema:description Timing and dosing of chemical venous thromboembolism (VTE) prophylaxis in brain injury is controversial. Risk of bleeding while using high dose unfractionated heparin (UFH) in overweight patients to prevent VTE is also unknown. The purpose of this study was to describe the use of subcutaneous heparin 7500 units for VTE prophylaxis in overweight patients. This was a retrospective study comparing patients over 100 kg who received either 7500 units Q8 h (n = 141) (high dose group, HDG), or 5000 units Q8 h (n = 257) (traditional dose group, TDG), of UFH subcutaneously. Both groups had similar rates of bleeding complications. The incidence of drop in hemoglobin by two points in any 24 h was 14 % (20/141) HDG versus 11 % (28/257) TDG; P = 0.33. Hemoglobin drop by two points from baseline was 57 % (81/141) HDG versus 51 % (132/257) TDG; P = 0.24. The need for pRBC transfusion was 26 % (36/141) HDG versus 20 % (52/257) TDG; P = 0.22. An increase in aPTT from baseline by two times was 4 % (5/141) HDG versus 4 % (9/257) TDG, P = 0.59. Discontinuation of heparin therapy for association with progressive bleeding was not documented in any patients. No differences in minor bleeding complications were observed. There was no difference in the incidence of VTE: 5.7 % (8/141) HDG versus 9.3 % (24/257) TDG; P = 0.2. In univariate and multivariable logistic regression analysis, only the time of the initiation of heparin after admission was associated with the occurrence of VTE (median, IQR) 46 h (17-86) HDG versus 105 h (56-167) TDG; OR 1.2 (1.1-1.3); P < 0.001. High dose subcutaneous UFH was not associated with an increased risk of bleeding, nor did it decrease the incidence of VTE in overweight patients.
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