Source: Medicines & Healthcare Products Regulatory Agency (GB) Revision Year: 2016 Publisher: Biotest Pharma GmbH, Landsteinerstrasse 5, 63303 Dreieich, Germany, Phone: +49 6103 801-0, Fax: +49 6103 801-150, mail@biotest.de
Treatment and prophylaxis of bleeding in patients with haemophilia B (congenital factor IX deficiency).
Haemonine is indicated in adults, adolescents and children aged 6 years and older.
Treatment should be under the supervision of a physician experienced in the treatment of haemophilia.
During the course of treatment, appropriate determination of factor IX levels is advised to guide the dose to be administered and the frequency of repeated infusions. Individual patients may vary in their response to factor IX, demonstrating different half-lives and recoveries. Dose based on bodyweight may require adjustment in underweight or overweight patients. In the case of major surgical interventions in particular, precise monitoring of the substitution therapy by means of coagulation analysis (plasma factor IX activity) is indispensable.
Dose and duration of the substitution therapy depend on the severity of the factor IX deficiency, on the location and extent of the bleeding and on the patientยดs clinical condition.
The number of units of factor IX administered is expressed in International Units (IU), which are related to the current WHO standard for factor IX products. Factor IX activity in plasma is expressed either as a percentage (relative to normal human plasma) or in International Units (relative to an International Standard for factor IX in plasma).
One International Unit (IU) of factor IX activity is equivalent to that quantity of factor IX in one ml of normal human plasma.
The calculation of the required dosage of factor IX is based on the empirical finding that 1 International Unit (IU) factor IX per kg body weight raises the plasma factor IX activity by 1-2% of normal activity. The required dose is determined using the following formula:
Required units = body weight (kg) x desired factor IX rise (%) (IU/dl) x 0.8
The amount to be administered and the frequency of administration should always be oriented to the clinical effectiveness in the individual case.
In the case of the following haemorrhagic events, the factor IX activity should not fall below the given plasma activity level (in % of normal or in IU/dl) in the corresponding period. The following table can be used to guide dosing in bleeding episodes and surgery:
Degree of haemorrhage / Type of surgical procedure | Factor IX level required (%) (IU/dl) | Frequency of doses (hours) / Duration of therapy (days) |
---|---|---|
Haemorrhage | ||
Early haemarthrosis, muscle bleeding or oral bleeding | 20-40 | Repeat every 24 hours. At least 1 day, until the bleeding episode as indicated by pain is resolved or healing is achieved. |
More extensive haemarthrosis, muscle bleeding or haematoma | 30-60 | Repeat infusion every 24 hours for 3-4 days or more until pain and acute disability are resolved. |
Life threatening haemorrhages | 60-100 | Repeat infusion every 8 to 24 hours until threat is resolved. |
Surgery | ||
Minor surgery including tooth extraction | 30-60 | Every 24 hours, at least 1 day, until healing is achieved. |
Major surgery | 80-100 (pre- and post-operative) | Repeat infusion every 8 to 24 hours until adequate wound healing, then therapy for at least another 7 days to maintain a factor IX activity of 30 to 60% (IU/dl). |
For long term prophylaxis against bleeding in patients with severe haemophilia B, the usual doses are 20 to 40 IU of factor IX per kilogram of body weight at intervals of 3 to 4 days. In some cases, especially in younger patients, shorter dosage intervals or higher doses may be necessary.
There are insufficient data to recommend the use of Haemonine in children less then 6 years of age.
Intravenous use.
For instructions on dilution of the medicinal product before administration, see section 6.6. It is recommended to not exceed a maximal infusion rate of 5 ml/min.
No case of overdose has been reported.
Shelf life: 2 years.
Use immediately after reconstitution.
Do not store above 25ยฐC.
Do not freeze.
Keep the vials in the outer carton in order to protect from light.
1 package Haemonine 500 contains:
The pack also contains: 1 disposable syringe (5 ml), 1 double-filter transfer system, 1 butterfly cannula.
1 package Haemonine 1000 contains:
The pack also contains: 1 disposable syringe (10 ml), 1 double-filter transfer system, 1 butterfly cannula.
Absolute sterility is to be ensured in all steps of the procedure !
*Bring the unopened vials of the solvent (water for injections) and product to room temperature. If a water bath is used for warming, it must be scrupulously ensured that the water does not come into contact with the caps or stoppers of the vials. Otherwise contamination of the medicine may occur.
The solution ready for use must be used immediately after dissolving. Do not use solutions that are cloudy or have deposits.
Any unused product or waste material should be disposed of in accordance with local requirements.
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