Prismasol 4 mmol/l Potassium solution for haemodialysis/haemofiltration

Prismasol 4 mmol/l Potassium is used in the treatment of renal failure, as substitution solution in haemofiltration and haemodiafiltration and as dialysis solution in continuous haemodialysis or continuous haemodiafiltration.

Prismasol 4 mmol/l Potassium solution may also be used in case of drug poisoning with dialysable or filterable substances.

Prismasol 4 mmol/l Potassium solution is indicated in patients who are normokalaemic.

Posology:

The rate at which Prismasol 4 mmol/l Potassium 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).

Flow rates for the substitution solution in haemofiltration and haemodiafiltration are:

Flow rates for the dialysis solution (dialysate) in continuous haemodialysis and continuous haemodiafiltration are:

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 4000 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.

Prismasol 4 mmol/l Potassium, when used as a substitution solution is administered into the extracorporeal circuit before (pre-dilution) or after the haemofilter or haemodiafilter (post-dilution).

For further information on the use of the medicinal product see section 6.6 Special precautions for disposal and other handling.

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

Solution dependent contraindications

• Hyperkalaemia

• Metabolic alkalosis.

* Please pay attention that glucose contained in Prismasol may be produced from hydrolysed corn starch and therefore the presence of corn antigen in the finished product, as hypersensitivity reactions, cannot be excluded.

Haemofiltration/- dialysis dependent contraindications

• Renal failure with pronounced hypercatabolism, if the uraemic symptoms cannot be corrected with haemofiltration,

• Insufficient arterial pressure in the vascular access,

• Systemic anticoagulation (high risk of haemorrhage).

The solution should be used only by, or under the direction of a physician competent in renal failure treatments using haemofiltration, haemodiafiltration and continuous haemodialysis.

Warnings:

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

Use only with appropriate extracorporeal renal replacement equipment.

The solution is a potassium-containing solution. The solution should not be used in patients with hyperkalaemia. The serum potassium concentration must be monitored before and during haemofiltration and/or haemodialysis.

If hyperkalaemia occurs after treatment is initiated, additional sources of potassium influencing blood concentrations should be assessed. When the solution is used as a replacement solution, decrease the infusion rate and confirm that the desired potassium concentration is achieved. If hyperkalaemia does not resolve, stop the infusion promptly.

If hyperkalaemia develops when the solution is used as a dialysate, administration of a potassium-free dialysate may be necessary to increase the rate of potassium removal.

Despite no cases of severe corn hypersensitivity reactions being reported with Prismasol, solutions containing glucose derived from hydrolysed maize starch should not be used in patients with a known allergy to maize or maize products.

The administration must be stopped immediately if any signs or symptoms of a suspected hypersensitivity reaction develop. Appropriate therapeutic countermeasures must be instituted as clinically indicated.

Because the solution contains glucose and lactate hyperglycaemia may develop, especially in diabetic patients. Blood glucose levels should be monitored regularly. If hyperglycaemia develops, administration of glucose-free replacement solution/dialysate may be necessary. Other corrective measures may be needed to maintain desired glycaemic control.

Prismasol 4 mmol/l Potassium 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 and haemodialysis solution may cause sepsis, shock and death.

Special precautions for use:

Prismasol 4 mmol/l Potassium 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. Use sodium phosphate if adding phosphate to the bag. Inorganic phosphate must be substituted in cases of hypophosphataemia.

The patient's haemodynamic 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 medicaments can be avoided by correct dosage of the solution for haemofiltration and haemodialysis 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

There are no adequate data from the use of Prismasol 4 mmol/l Potassium in pregnant or lactating woman. The prescriber should consider the benefit/risk relationship before administering Prismasol 4 mmol/l Potassium to pregnant or breast-feeding woman.

Fertility

There are no data availability on fertility.

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).

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 the Yellow Card Scheme: www.mhra.gov.uk/yellowcard

Overdose with Prismasol 4 mmol/l Potassium, 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

Prismasol 4 mmol/l Potassium, solution for haemofiltration and haemodialysis is pharmacologically inactive. The sodium, calcium, magnesium, potassium, chloride ions and glucose 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 and haemodiafiltration or to serve as a suitable exchange medium for use during continuous 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.

All the ingredients of the solution are physiological components in animal and human plasma. Toxic effects are not expected at therapeutic doses.

Electrolyte solution (small compartment A): Water for injections

Buffer solution (large compartment B): Water for injections, Carbon dioxide (E290)

In the absence of compatibility studies, this 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 Prismasol 4 mmol/l Potassium 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 Prismasol 4 mmol/l Potassium (pH of reconstituted solutions 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. If not used immediately in-use storage times and conditions prior to use are the responsibility of the user and should 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 Poly(vinyl 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 overwrapped with a transparent overwrap made of multilayer polymer film.

Each two-compartment bag contains 5000 ml.

Pack 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:

Do not remove unit from overwrap until ready for use.

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 Prismasol 4 mmol/l Potassium, 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:

I Remove the overwrap from the bag and the sheet between the folded compartments. Open the seal by breaking the frangible pin between the two compartments of the bag. The frangible pin will remain in the bag.

II Make sure all the fluid from the small compartment A is transferred into the large compartment B.

III Rinse the small compartment A twice by pressing the mixed solution back into the small compartment and then back into the large compartment B.

IV When the small compartment A is empty: shake the large compartment B so that contents mix completely.

The solution is now ready for use.

V If the luer connector is used, first connect the replacement or dialysis line and then break the frangible pin in the luer connector.

The bag should hang in all three hanging holes when used.

Connect the substitution fluid/dialysis line.

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 shall be followed:

The reconstituted solution should be used immediately. 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.

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