Hemosol B0 solution for haemodialysis/haemofiltration

As substitution solution in continuous haemofiltration and haemodiafiltration and as dialysis solution in continuous haemodialysis for acute renal failure in adult and children of all ages.

Posology:

The rate at which Hemosol B0 is administered depends on the blood concentration of electrolytes, acid-base balance, fluid balance and overall clinical condition of the patient. The volume of replacement solution and/or dialysate to be administered will also depend on the desired intensity (dose) of the treatment. The solution should be prescribed and administration (dose, infusion rate, and cumulative volume) should be established only by a physician experienced in critical care medicine and CRRT (Continuous Renal Replacement Therapy).

Commonly used flow rates in adults are approximately 2000 to 2500 ml/h which correspond to a daily fluid volume of approximately 48 to 60 L.

Special population:

Elderly population

Evidence from clinical studies and experience suggests that use in the elderly population is not associated with differences in safety or effectiveness.

Paediatric population:

The range of flow rates for the substitution solution in haemofiltration and haemodiafiltration and for the dialysis solution (dialysate) in continuous haemodialysis are:

Children (from neonates to adolescents to 18 years): 1000 to 2000 mL/h/1.73 m²

Flow rates up to 4,000 mL/h/1.73 m² may be needed, especially in younger children (≤ 10 kg). The absolute flow rate (in mL/h) in the paediatric population should generally not exceed the maximum adult flow rate.

Method of administration:

Intravenous use and for haemodialysis.

Hemosol B0, when used as a substitution solution is administered into the extracorporeal circuit before (pre-dilution) or after the haemofilter or haemodiafilter (post-dilution).

For instructions on reconstitution of the medicinal product before administration, see section 6.6.

Hypersensitivity to the active substances or to any of the excipients listed in section 6.1.

Warnings:

The substitution solution Hemosol B0 is potassium-free. The serum potassium concentration must be monitored before and during hemofiltration and/or hemodialysis.

The electrolyte solution must be mixed with the buffer solution before use to obtain the final solution suitable for haemofiltration/haemodiafiltration/continuous haemodialysis.

Use only with appropriate extracorporeal renal replacement equipment.

Because the solution contains no glucose, administration may lead to hypoglycemia. Blood glucose levels should be monitored regularly.

Hemosol B0 contains hydrogen carbonate (bicarbonate), and lactate (a hydrogen carbonate precursor) which can influence the patient's acid– base balance. If metabolic alkalosis develops or worsens during therapy with the solution, the administration rate may need to be decreased, or the administration stopped.

The use of contaminated haemofiltration solution may cause sepsis, shock and fatal conditions.

Precautions for use:

Hemosol B0 may be warmed to 37 ° C to enhance patient comfort. Warming of the solution prior to use should be done before reconstitution with dry heat only. Solutions should not be heated in water or in a microwave oven. The solution should be inspected visually for particulate matter and discoloration prior to administration, whenever solution and container permit. Do not administer unless the solution is clear and the seal is intact.

Before and during treatment, electrolyte and acid-base balance should be closely monitored throughout the procedure.

Phosphate up to 1.2 mmol/L may be added to the solution. If potassium phosphate is added, the total potassium concentration should not exceed 4 mEq/L (4 mmol/L). Potassium supplement might be necessary.

The patient's hemodynamic status and fluid balance should be monitored throughout the procedure and corrected as needed.

Paediatric population:

There are no specific warnings and precautions when using this medicine for children.

The blood concentration of filterable/dialysable drugs may be reduced during treatment. Corresponding corrective therapy should be instituted if necessary to establish the desired blood concentrations for drugs removed during treatment.

Interactions with other medications due to electrolyte and/or acid-base imbalances can be avoided by correct dosage of the solution for haemodialysis/haemofiltration and precise monitoring.

However, the following interactions are conceivable:

• The risk of digitalis-induced cardiac arrhythmia is increased during hypokalaemia;

• Vitamin D and vitamin D analogues, as well as medicinal products containing calcium (e.g. calcium chloride or calcium gluconate used for maintenance of calcium homeostasis, in CRRT patients receiving citrate anticoagulation and calcium carbonate as phosphate binder) can increase the risk of hypercalcaemia;

• Additional sodium hydrogen carbonate (or other buffer source) contained in the CRRT fluids or in other fluids administered during therapy may increase the risk of metabolic alkalosis;

• When citrate is used as an anticoagulant, it contributes to the overall buffer load and can reduce plasma calcium levels.

Pregnancy and breastfeeding

No effects during pregnancy or on the breast-fed newborn/infant are anticipated. There is no report on Hemosol B0 during pregnancy or lactation but literature on renal replacement therapy during acute kidney injury does not suggest risks associated with solutions. The prescriber should consider the benefit/risk relationship before administering Hemosol B0 to pregnant or breast feeding women.

Fertility

There are no clinical data on fertility. However no effects on fertility are anticipated.

Not relevant

The following undesirable effects are reported from post-marketing experience. The table presented below is according to the MedDRA system organ classification (SOC and Preferred Term Level).

Frequencies: Not known (cannot be estimated from the available data).

Special attention must be taken for patients with hypokalaemia as this solution is potassium-free (see section 4.4).

Reporting of suspected adverse reactions

Reporting suspected adverse reactions after authorisation of the medicinal product is important. It allows continued monitoring of the benefit/risk balance of the medicinal product. Healthcare professionals are asked to report any suspected adverse reactions via Yellow Card Scheme. Website: www.mhra.gov.uk/yellowcard

Overdose with Hemosol B0 substitution fluid should not occur if the procedure is carried out correctly and the fluid balance, electrolyte and acid-base balance of the patient are carefully monitored.

However, overdose could lead to severe consequences, such as congestive heart failure, electrolyte or acid-base disturbances.

If hypervolaemia or hypovolaemia occur, this should be corrected immediately.

If electrolyte imbalance and acid-base balance abnormalities (e.g., metabolic alkalosis, hypophosphataemia, hypokalaemia, etc.) occur, stop administration promptly. There is no specific antidote for overdose. The risk can be minimized by close monitoring and adequate supplementation during treatment (see section 4.4).

Pharmacotherapeutic group: Hemofiltrates, ATC code: B05ZB.

Pharmacodynamic effects

Hemosol B0 is pharmacologically inactive. The sodium, calcium, magnesium and chloride ions are present at concentrations similar to physiological levels in plasma.

Mechanism of action

The solution is used to replace water and electrolytes removed during haemofiltration or to serve as a suitable exchange medium for use during haemodiafiltration or continuous haemodialysis. Hydrogen carbonate is used as an alkalising buffer.

Not relevant. The active ingredients are pharmacologically inactive and are present at concentrations similar to physiological plasma levels.

Not relevant. The active ingredients are pharmacologically inactive and are present at concentrations similar to physiological plasma levels.

In the absence of compatibility studies, this medicinal product must not be mixed with other medicinal products.

It is the responsibility of the physician to judge the incompatibility of an additive medication with the Hemosol B0 solution by checking for eventual colour change and/or eventual precipitation, insoluble complexes or crystals. The Instructions for Use of the medication to be added must be consulted.

Before adding a drug, verify it is soluble and stable in water at the pH of Hemosol B0 (pH of reconstituted solution is 7.0 to 8.5).

The compatible medication must be added to the reconstituted solution and the solution must be administered immediately.

PVC: 1 year as packaged for sale.

Polyolefin: 18 months as packaged for sale.

Chemical and physical in-use stability of the reconstituted solution has been demonstrated for 24 hours at 22 C. From a microbiological point of view, once opened (i.e. connected to the line), and as hydrogen carbonate is present, the reconstituted solution should be used immediately. Other in-use storage times and conditions prior to use are the responsibility of the user and would not normally be longer than 24 hours, including the duration of the treatment.

Do not store below +4° C.

For storage conditions after reconstitution of the medicinal product, see section 6.3.

The container made in Polyvinyl chloride (PVC) or polyolefin is a two-compartment bag. The 5000 ml bag is comprised of a small compartment (250 ml) and a large compartment (4750 ml). The two compartments are separated by a frangible pin or a peel seal.

The large compartment B is fitted with an injection connector (or spike connector) made of polycarbonate (PC), which is closed with a rubber disc covered by a cap as well as a luer connector (PC) with a frangible pin (PC) or a valve made of silicone rubber for the connection of the bag with a suitable replacement solution line or dialysis line.

The bag is over wrapped with a transparent overwrap made of multilayer polymer film.

Each two-compartment bag contains 5000 ml.

Package size: 2 x 5000 ml in a box.

The electrolyte solution (small compartment A) is added to the buffer solution (large compartment B) after breaking the frangible pin or opening the peel seal immediately before use to obtain the reconstituted solution.

A patient information leaflet with detailed instruction for use is enclosed in the box.

Aseptic technique should be used throughout the handling and administration to the patient:

Use only if the overwrap is not damaged, all seals are intact, frangible pin or peel seal is not broken, and the solution is clear. Press bag firmly to test for any leakage. If leakage is discovered, discard the solution immediately since sterility can no longer be assured.

The large compartment is fitted with an injection port for the possible addition of other necessary drugs after reconstitution of the solution.

Before adding a substance or medication, verify that it is soluble and stable in Hemosol B0, and that the pH range is appropriate (pH of reconstituted solution is 7.0 to 8.5).

Additives may be incompatible. The instructions for use of the medication to be added and other relevant literature must be consulted. After addition, if there is a colour change and/or the appearance of precipitates, insoluble complexes, or crystals, do not use.

Mix the solution thoroughly when additives have been introduced. The introduction and mixing of additives must always be performed prior to connecting the solution bag to the extracorporeal circuit.

If a frangible pin separates the two compartments of the bag and a frangible pin is located in the luer connector the following instructions for use should be followed:

If a frangible pin separates the two compartments of the bag and a valve is located in the luer connector, the following instructions for use shall be followed:

If a peel seal separates the two compartments of the bag and a valve is located in the luer connector the following instructions for use should be followed:

The solution should be used immediately after removal of the over wrap. If not used immediately, the reconstituted solution should be used within 24 hours, including the duration of the treatment, after addition of the electrolyte solution to the buffer solution.

The reconstituted solution is for single use only. Do not use if container is damaged or if solution is not clear. Discard any unused portion immediately after use.

Any unused medicinal product or waste material should be disposed of in accordance with local requirements.