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Recombinant activated factor VII in critical bleeding: experience from the Australian and New Zealand Haemostasis Register

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Abstract:

Abstract Background: 

There has been increasing off-label use of recombinant activated factor VII (rFVIIa/NovoSeven; Novo Nordisk, Bagsvaerd, Denmark) for patients with critical bleeding. Given the lack of high-level evidence, the clinical indications, observed response and adverse events are important to capture. Methods: 

The Haemostasis Registry collects retrospective and contemporaneous data on all use of rFVIIa at participating institutions for non-haemophiliac patients with critical bleeding (i.e. off-label use). Results: 

As of October 2006, 694 cases had been reported into the register from 37 hospitals across Australia and New Zealand. These comprise an array of therapeutic categories, including salvage use in: perioperative cardiothoracic surgery (44%), trauma (16%), medical bleeding (9%), obstetric bleeding (4%) and other types of critical bleeding (28%). Patients received a median (interquartile range) dose of 91 g/kg (75–103) and 83% of patients received a single dose of rFVIIa. The documented response rate to a single dose of rFVIIa was 69%. The 28-day survival was 68%, but varied with clinical category. The rate of adverse events probably or possibly linked to the use of rFVIIa was 6%, with most of the thromboembolic adverse events occurring in the cardiac surgery group. Conclusion: 

The Haemostasis Registry cannot replace well-designed prospective randomized controlled trials, but in their absence this registry provides a basis for understanding current clinical experience of rFVIIa. Registries continue to be vital in monitoring off-label uses of medications.

Keywords: NovoSeven; factor VIIa; haemorrhage; haemostasis

Document Type: Research Article

DOI: http://dx.doi.org/10.1111/j.1445-5994.2007.01472.x

Affiliations: 1: Royal North Shore Hospital 2: Royal Prince Alfred Hospital, Sydney, New South Wales 3: Novo Nordisk Pharmaceuticals Pty Ltd, Sydney, New South Wales, Australia 4: Monash University Department of Epidemiology and Preventive Medicine, Melbourne, Victoria

Publication date: March 1, 2008

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