Remifentanil Noridem 2 mg powder for concentrate for solution for injection and infusion EFG

Ireland:

Remifentanil Noridem 1mg Powder for Concentrate for Solution for Injection or Infusion

Austria:

Remifentanil/Noridem 1mg Powder for Concentrate for Solution for Injection or Infusion

Greece:

Remifentanil/Noridem Powder for Concentrate for Solution for Injection or Infusion, 1mg/vial

Spain:

Remifentanil Noridem 1 mg powder for concentrate for solution for injection and for infusion EFG

This information is intended exclusively for medical or healthcare professionals:

For detailed information, please refer to the Summary of Product Characteristics for Remifentanilo Noridem.

Dosage and method of administration

Remifentanilo Noridem must be administered in a fully equipped environment for monitoring and maintaining respiratory and cardiovascular function, and by personnel specifically trained in the use of anesthetic agents and in the recognition and management of adverse effects expected with potent opioids, including respiratory and cardiac resuscitation. Such training must include establishing and maintaining an airway and providing assisted ventilation.

Continuous infusions of Remifentanilo Noridem should be administered using a calibrated infusion pump connected to a rapid intravenous administration line or to an intravenous administration set specifically designed for this purpose. The infusion line must be connected to, or near, the venous cannula and should be primed to minimize dead space (see Special precautions for disposal and other handling and section 6.6 of the Summary of Product Characteristics, including tables with examples of infusion rates based on body weight to assist in dose adjustment of Remifentanilo Accord according to the anesthesia required for the patient).

Remifentanilo Noridem may also be administered via target-controlled infusion (TCI) using an authorized infusion device incorporating the Minto pharmacokinetic model with covariates based on age and lean body mass (LBM) (Anesthesiology 1997; 86: 10–23).

It is important to take care to avoid occlusion or disconnection of infusion lines and to flush the lines appropriately to remove residual Remifentanilo Noridem after use (see Warnings and special precautions for use).

Remifentanilo Noridem is for intravenous use only and must not be administered via epidural or intrathecal injection (see Contraindications).

Dilution

Remifentanilo Noridem may be diluted after reconstitution. Refer to the dilution instructions for the medicinal product before administration; see Special precautions for disposal and other handling.

For manually controlled infusion, Remifentanilo Noridem can be diluted to concentrations between 20 and 250 micrograms/mL (50 micrograms/mL is the recommended dilution for adults; 20 to 25 micrograms/mL for pediatric patients aged 1 year and older).

For TCI, the recommended dilution of Remifentanilo Noridem is 20 to 50 micrograms/mL.

General anesthesia

The administration of Remifentanilo Noridem should be individually adjusted according to the patient's response.

Adults

Manually Controlled Infusion (MCI)

Table 1 summarizes the initial bolus injection/infusion rates and dose ranges:

Table 1. Dose recommendations for adults

When administered as a slow bolus during induction, the Remifentanil Noridem injection must last at least 30 seconds.

At the recommended doses above, remifentanil significantly reduces the amount of hypnotic agent required to maintain anesthesia. Therefore, isoflurane and propofol should be administered as recommended in the table to avoid increased hemodynamic effects such as hypotension and bradycardia (see the section Concomitant Medication).

No data are available for dose recommendations in the case of simultaneous use of other hypnotic-sedative agents with remifentanil, different from those indicated in Table 1.

Induction of anesthesia: Remifentanil Noridem should be administered with a standard dose of a hypnotic agent, such as propofol, thiopental, or isoflurane, for induction of anesthesia. Remifentanil Noridem may be administered at an infusion rate of 0.5 to 1 microgram/kg/min, with or without an initial bolus of 1 microgram/kg administered over no less than 30 seconds. If endotracheal intubation is to be performed more than 8–10 minutes after starting the Remifentanil Noridem infusion, the bolus is not necessary.

Maintenance of anesthesia in ventilated patients: After endotracheal intubation, the Remifentanil Noridem infusion rate should be reduced according to the anesthetic technique, as indicated in Table 1. Due to the rapid onset and short duration of action of Remifentanil Noridem, the administration rate during anesthesia may be increased in increments of 25% to 100% or decreased by 25% to 50%, every 2 to 5 minutes, to achieve the desired level of μ-opioid receptor response. Supplemental bolus doses may be administered every 2 to 5 minutes in response to light anesthesia.

Anesthesia in anesthetized patients breathing spontaneously via a secure airway (e.g., laryngeal mask anesthesia): Respiratory depression is likely to occur in anesthetized patients breathing spontaneously via a secure airway. Particular care must be taken to adjust the dose according to individual patient requirements, and supportive ventilation may be necessary. The recommended initial infusion rate for supplemental analgesia in anesthetized patients breathing spontaneously is 0.04 microgram/kg/min, titrated to effect. An infusion rate range of 0.025 to 0.1 microgram/kg/min has been studied. Bolus injection is not recommended in anesthetized patients with spontaneous ventilation.

Remifentanil Noridem must not be used as an analgesic in procedures where the patient remains conscious or does not receive airway support during the procedure.

Concomitant Medication: Remifentanil reduces the amounts or doses of inhaled anesthetics, hypnotics, and benzodiazepines required for anesthesia (see section 4.5 of the Summary of Product Characteristics).

The doses of the following agents used in anesthesia: isoflurane, thiopentone, propofol, and temazepam have been reduced by up to 75% when used simultaneously with remifentanil.

Recommendations for discontinuation/continuation during the immediate postoperative period: Due to the very rapid reversal of the effect of Remifentanil Noridem, there will be no residual opioid activity within 5 to 10 minutes after stopping administration. For patients undergoing surgical procedures where postoperative pain is expected, analgesics should be administered prior to discontinuation of Remifentanil Noridem. Sufficient time should be allowed for the longer-acting analgesic to reach its maximum effect. The choice of analgesic should be appropriate based on the surgical procedure performed and the level of postoperative care.

If the longer-acting analgesic has not achieved adequate effect before the end of surgery, continued administration of Remifentanil Noridem may be required to maintain analgesia during the immediate postoperative period until the longer-acting analgesic reaches its maximum effect.

Further information on use in intensive care patients is provided in the section "Use in Intensive Care".

In patients with spontaneous respiration, the initial infusion rate of Remifentanil Noridem should be reduced to 0.1 microgram/kg/min and may then be increased or decreased every 5 minutes in increments of no more than 0.025 microgram/kg/min to balance the level of analgesia and the patient's respiratory rate. Remifentanil Noridem should only be used in a fully equipped environment for monitoring and maintaining respiratory and cardiovascular function, under careful supervision of personnel specifically trained and experienced in recognizing and managing the respiratory effects of potent opioids.

Bolus injection is not recommended in patients with spontaneous respiration for pain management during the postoperative period.

Administration by Target-Controlled Infusion (TCI)

Induction and maintenance of anesthesia in ventilated patients: Remifentanil Noridem TCI should be used in combination with an intravenous or inhaled hypnotic agent during induction and maintenance of anesthesia in ventilated adult patients (see Table 1 in the General Anesthesia section).

In combination with these drugs, adequate analgesia for anesthesia induction and surgical procedures can generally be achieved with blood concentrations of Remifentanil Noridem of 3–8 nanograms/ml. Remifentanil concentrations should be adjusted to achieve the individual patient's response. For particularly stimulating surgical procedures, blood concentrations of up to 15 nanograms/ml may be required.

At the recommended doses above, remifentanil significantly reduces the amount of hypnotic agent required to maintain anesthesia. Therefore, isoflurane and propofol should be administered as recommended to avoid increased hemodynamic effects of remifentanil such as hypotension and bradycardia (see Table 1 and the section Concomitant Medication).

For information on blood remifentanil concentrations achieved with manually controlled infusion, see Table 11 in section 6.6 of the Summary of Product Characteristics.

Due to insufficient data on the administration of Remifentanil Noridem by TCI, anesthesia with spontaneous ventilation is not recommended.

Recommendations for discontinuation/continuation in the immediate postoperative period: At the end of surgery, when TCI infusion has been stopped or the target concentration reduced, spontaneous respiration is likely to occur within calculated remifentanil concentration ranges of 1–2 nanograms/ml. As with manually controlled infusion, postoperative analgesia with longer-acting analgesics should be administered before the end of surgery (see section Manually Controlled Infusion: Recommendations for Discontinuation).

Due to insufficient data, administration of remifentanil by TCI is not recommended for management of postoperative analgesia.

Pediatric patients (1 to 12 years of age)

Concomitant administration of remifentanil with intravenous anesthetic agents for induction of anesthesia has not been adequately studied and is therefore not recommended.

Remifentanil Noridem TCI has also not been studied in pediatric patients, and thus TCI administration is not recommended in these patients. To maintain anesthesia, the following Remifentanil Noridem doses are recommended.

Table 2. Dose recommendations for pediatric patients (1 to 12 years of age)

*administered concomitantly with nitrous oxide/oxygen in a 2:1 ratio

When remifentanil is administered by bolus injection, the duration of administration must not be less than 30 seconds. Surgical intervention should not begin until at least 5 minutes after the start of Remifentanil Noridem infusion, if no simultaneous bolus dose has been given. For the sole administration of nitrous oxide (70%) with Remifentanilo Noridem, the usual maintenance infusion rates should range between 0.4 and 3 micrograms/kg/min. Despite the lack of specific studies, data obtained in adults suggest that 0.4 micrograms/kg/min may be an appropriate initial dose. Pediatric patients should be closely monitored, with dose adjustments made according to the depth of analgesia considered appropriate for each surgical procedure.

Concomitant medication: At the recommended doses above, remifentanil significantly reduces the amount of hypnotic agent required to maintain anesthesia. Therefore, isoflurane, halothane, and sevoflurane should be administered as recommended in the table above in order to avoid an increase in hemodynamic effects such as hypotension and bradycardia. There are no data available to provide dose recommendations for the simultaneous use of other hypnotic agents with remifentanil (see section Adults – Concomitant Medication).

Recommendations for patient management in the immediate postoperative period / Establishment of alternative analgesia prior to discontinuation of Remifentanil Noridem: Due to the very rapid offset of action of Remifentanil Noridem, there is no residual activity within 5 to 10 minutes after stopping the infusion. For patients undergoing surgical procedures where postoperative pain is expected, analgesics should be administered before discontinuation of Remifentanil Noridem. Sufficient time should be allowed for the therapeutic effect of the longer-acting analgesic to be achieved. The choice of drugs, dosage, and timing of administration should be planned in advance and individually adjusted to suit both the surgical procedure and the expected level of postoperative care (see Warnings and Special Precautions for Use).

Neonates and children (under 1 year of age)

Clinical trial experience with remifentanil in neonates and children under one year of age is limited (see section 5.1 of the Summary of Product Characteristics). The pharmacokinetic profile of remifentanil in newborns/infants (less than 1 year of age) is comparable to that observed in adults after appropriate correction for body weight differences (see section 5.2 of the Summary of Product Characteristics). However, due to insufficient clinical data, remifentanil administration is not recommended in this age group.

Use for Total Intravenous Anesthesia (TIVA): Clinical trial experience with remifentanil in children is limited (see section 5.1 of the Summary of Product Characteristics). However, clinical data are insufficient to establish dosing recommendations.

Cardiac anesthesia

Administration by Manually Controlled Infusion

Table 3. Dose recommendations for cardiac anesthesia

Induction period of anesthesia: After administration of a hypnotic to achieve loss of consciousness, Remifentanil Noridem should be administered at an initial infusion rate of 1 microgram/kg/min. In patients undergoing cardiac surgery, bolus injections of Remifentanil Noridem during induction are not recommended. Endotracheal intubation should not be performed until at least 5 minutes after the start of the infusion.

Maintenance period of anesthesia: After endotracheal intubation, the infusion rate of Remifentanil Noridem should be adjusted according to the patient's needs. Supplemental bolus doses may also be given if necessary. In high-risk cardiac patients, such as those undergoing valve surgery or with poor ventricular function, the maximum bolus dose should not exceed 0.5 microgram/kg.

These dosage recommendations also apply during hypothermic cardiopulmonary bypass grafting (see section 5.2 of the Summary of Product Characteristics).

Concomitant medication: At the recommended doses above, remifentanil significantly reduces the amount of hypnotic drug required to maintain anesthesia. Therefore, isoflurane and propofol should be administered as recommended above to avoid increased hemodynamic effects such as hypotension and bradycardia. Data are not available to provide dosage recommendations for the simultaneous use of other hypnotic drugs with remifentanil (see section Adults - Concomitant Medication).

Recommendations for postoperative patient management

Continuation of Remifentanil Noridem in the postoperative period to achieve analgesia prior to extubation: It is recommended to maintain the Remifentanil Noridem infusion at the final intraoperative rate during transfer of patients to the post-anesthesia care unit. Upon arrival in this area, the patient's level of anesthesia and sedation should be carefully monitored, and the Remifentanil Noridem infusion rate adjusted according to individual patient requirements (for further information on patient management in intensive care, see section Use in Intensive Care).

Establishment of alternative analgesia prior to discontinuation of Remifentanil Noridem: Due to the very rapid offset of action of Remifentanil Noridem, no residual opioid activity remains 5 to 10 minutes after stopping administration. Before discontinuing Remifentanil Noridem, alternative analgesic and sedative drugs should be administered with sufficient lead time to allow establishment of their therapeutic effects. Therefore, it is recommended that the choice of agent, dose, and timing of administration be planned before removing the patient from mechanical ventilation.

Recommendations for discontinuation of Remifentanil Noridem: Due to the rapid offset of action of Remifentanil Noridem, hypertension, shivering, and pain have been reported in cardiac patients immediately after discontinuation of Remifentanil Noridem (see section 4.8 of the Summary of Product Characteristics). To minimize the risk of these effects, appropriate alternative analgesia (as described above) should be established before stopping the Remifentanil Noridem infusion. The infusion rate should be reduced in decrements of 25% at intervals of at least 10 minutes until the infusion is discontinued.

During weaning from mechanical ventilation, the Remifentanil Noridem infusion rate should not be increased; only downward adjustments should be made, supplemented if necessary with alternative analgesics. Any hemodynamic changes such as hypertension and tachycardia should be managed appropriately with alternative agents.

When other opioid agents are administered as part of the transition to alternative analgesia, patients should be carefully monitored. The benefit of achieving adequate postoperative analgesia must always be weighed against the potential risk of respiratory depression caused by these drugs.

Administration by Target-Controlled Infusion (TCI)

Induction and maintenance of anesthesia: Remifentanil Noridem TCI should be used in combination with an intravenous or inhaled hypnotic agent during induction and maintenance of anesthesia in ventilated adult patients (see Table 3). In combination with these agents, an adequate level of analgesia for cardiac surgery is generally achieved at the upper end of the remifentanil blood concentration target range used in general surgical procedures. After titration of remifentanil according to individual patient response, blood concentrations of up to 20 nanograms/ml have been used in clinical studies. At the recommended doses above, remifentanil significantly reduces the amount of hypnotic agent required to maintain anesthesia. Therefore, isoflurane and propofol should be administered as previously recommended to avoid increased hemodynamic effects such as hypotension and bradycardia (see Table 3 and section Concomitant Medication).

For information on remifentanil blood concentrations achieved with manually controlled infusion, see Table 11 in section 6.6 of the Summary of Product Characteristics.

Recommendations for discontinuation / continuation in the immediate postoperative period: At the end of surgery, when TCI infusion is stopped or the target concentration is reduced, spontaneous respiration is likely to occur within a remifentanil concentration range of 1 to 2 nanograms/ml. As with manually controlled infusion, postoperative analgesia should be established before the end of surgery using longer-acting analgesics (see Manually Controlled Infusion: Recommendations for Discontinuation).

As sufficient data are not available, administration of remifentanil by TCI is not recommended for management of postoperative analgesia.

Pediatric patients (1 to 12 years of age)

There are insufficient data to make a dosage recommendation for use during cardiac surgery.

Use in intensive care

Adults

Remifentanil Noridem can be used to provide analgesia in mechanically ventilated patients in intensive care. Sedative agents should be administered when necessary. The safety and efficacy of remifentanil use in intensive care patients have been established in well-controlled clinical trials for up to a maximum of 3 days (see section Intensive Care Patients with Renal Impairment and section 5.2 of the Summary of Product Characteristics). Therefore, use for more than three days is not recommended.

Remifentanil TCI has not been studied in intensive care patients, and therefore administration of Remifentanil Noridem by TCI is not recommended in these patients.

In adults, it is recommended that Remifentanil Noridem infusion be initiated at a rate of 0.1 microgram/kg/min (6 micrograms/kg/h) to 0.15 microgram/kg/min (9 micrograms/kg/h). The infusion rate should be increased in increments of 0.025 microgram/kg/min (1.5 micrograms/kg/h) until the desired level of analgesia is achieved. A minimum interval of at least 5 minutes should be allowed between each dose adjustment. The patient should be regularly assessed, and the Remifentanil Noridem infusion rate adjusted accordingly. If an infusion rate of 0.2 microgram/kg/min (12 micrograms/kg/h) is reached and sedation is still required, administration of an appropriate sedative drug is recommended (see below). The dose of the sedative agent should be adjusted to achieve the desired level of sedation. If additional analgesia is required, further increases in the infusion rate of approximately 0.025 microgram/kg/min (1.5 micrograms/kg/h) may be made.

Table 4 summarizes the recommended initial infusion rates and typical dosage ranges for achieving analgesia in individual patients:

Table 4. Dosage guidelines for the use of Remifentanil Noridem in intensive care units

Bolus injection of Remifentanil Noridem is not recommended under intensive care conditions.

The use of Remifentanil Noridem will reduce the required dose of any concomitantly administered sedative drug. The usual initial doses for sedative drugs, if their administration is required, are detailed in Table 5 below:

Table 5. Recommended initial doses for sedative drugs, if necessary

To allow separate adjustment of the doses of each drug, sedatives should not be prepared as a mixture in the same infusion bag.

Additional analgesia for ventilated patients undergoing stimulating procedures: It may be necessary to increase the infusion rate of Remifentanil Noridem to provide additional analgesic coverage in ventilated patients undergoing stimulating and/or painful procedures such as endotracheal suctioning, wound care, and physiotherapy. It is recommended to maintain a Remifentanil Noridem infusion rate of at least 0.1 microgram/kg/min (6 microgram/kg/h) for at least 5 minutes before initiating the stimulation procedure. The dose may then be adjusted every 2 to 5 minutes in increments of approximately 25–50%, either anticipating or in response to additional analgesic requirements. The average infusion rate used to provide additional analgesia during stimulation procedures has been 0.25 microgram/kg/min (15 microgram/kg/h), with a maximum of 0.75 microgram/kg/min (45 microgram/kg/h).

Establishment of alternative analgesia prior to discontinuation of Remifentanil Noridem: Due to the very rapid offset of action of Remifentanil Noridem, there is no residual opioid activity within 5 to 10 minutes after stopping administration. Following administration of Remifentanil Noridem, tolerance, hyperalgesia, and associated hemodynamic changes may occur, particularly when used in intensive care units (see section 4.4, Warnings and special precautions for use in the Summary of Product Characteristics). Therefore, before discontinuing Remifentanil Noridem, alternative analgesic and sedative medications should be administered sufficiently in advance to allow establishment of their therapeutic effects and to prevent hyperalgesia and concomitant hemodynamic changes. Available analgesic options include prolonged-release oral analgesics or intravenous or local analgesics, administered either by healthcare personnel or patient-controlled. These drugs should be carefully titrated according to individual patient needs as the Remifentanil Noridem infusion is tapered. It is recommended that the choice of agent, dose, and timing of administration be planned in advance of discontinuing Remifentanil Noridem.

There is a risk that prolonged administration of μ-opioid agonists may lead to the development of tolerance.

Recommendations for extubation and discontinuation of Remifentanil Noridem: To ensure a gradual transition from Remifentanil Noridem therapy, it is recommended that the remifentanil infusion rate be gradually reduced in steps of up to 0.1 microgram/kg/min (6 microgram/kg/h) over a period of up to 1 hour prior to extubation.

After extubation, the infusion rate should be reduced in decrements of 25%, at intervals of at least 10 minutes, until infusion is stopped. During weaning from the ventilator, the Remifentanil Noridem infusion should not be increased and should only be reduced, supplemented if necessary with alternative analgesics.

After discontinuation of Remifentanil Noridem administration, the intravenous cannula should be flushed or removed to prevent any inadvertent subsequent administration of the drug.

When other opioid drugs are administered as part of the transition to alternative analgesia, the patient must be carefully monitored. The benefit of providing appropriate analgesia must always be weighed against the potential risk of respiratory depression following administration of these agents.

Pediatric patients in intensive care

No data are available for use in this patient population.

Renal impairment in intensive care patients

No adjustment of the recommended doses above is necessary in patients with renal impairment, including those undergoing renal replacement therapy; however, clearance of the carboxylic acid metabolite is reduced in patients with renal failure (see section 5.2 of the Summary of Product Characteristics).

Special patient groups

Older patients (over 65 years of age)

General anesthesia: The initial dose of remifentanil in patients over 65 years of age should be half the dose recommended for adults, and subsequently adjusted according to individual patient needs, as increased sensitivity to the pharmacological effects of remifentanil has been observed in this patient group. This dose adjustment may apply to all phases of anesthesia, including induction, maintenance, and immediate postoperative analgesia.

Due to increased sensitivity of elderly patients to remifentanil, when administering Remifentanil Noridem by TCI in this population, the initial target concentration should be 1.5 to 4 nanogram/ml, with subsequent adjustment according to response.

Cardiac anesthesia: No initial dose reduction is required (see section Cardiac anesthesia).

Intensive care: No initial dose reduction is required (see section Use in intensive care).

Obese patients

For manually controlled infusion, a dose reduction of Remifentanil Noridem is recommended in obese patients, based on ideal body weight, as the clearance and volume of distribution of remifentanil correlate better with ideal body weight than with actual body weight.

With the lean body mass (LBM) calculation used in the Minto model, LBM may be underestimated in female patients with a body mass index (BMI) greater than 35 kg/m² and in male patients with a BMI greater than 40 kg/m². To avoid underdosing in these patients, careful adjustment of remifentanil administered by TCI according to individual patient response is recommended.

Patients with renal impairment

Based on studies conducted to date, no dose adjustment is necessary in patients with impaired renal function, including patients in intensive care.

Patients with hepatic impairment

Studies conducted in a limited number of patients with impaired hepatic function do not indicate the need for any special dosage adjustment. However, patients with severe hepatic insufficiency may be slightly more sensitive to the respiratory depressant effects of remifentanil (see section 4.4 of the Summary of Product Characteristics). These patients should be closely monitored, and the dose of remifentanil should be adjusted according to individual patient needs.

Neurosurgery

Limited clinical experience in patients undergoing neurosurgery has shown that no special dosage recommendations are required.

ASA class III/IV patients

General anesthesia: As the hemodynamic effects of potent opioids are expected to be more pronounced in ASA class III/IV patients, caution should be exercised when administering Remifentanil Noridem to this population. Therefore, a reduced initial dose is recommended, with subsequent titration to achieve the desired effect. Insufficient data are available to make a dosage recommendation in children.

When administering by TCI, an initial dose lower than 1.5 to 4 nanogram/ml should be used in ASA class III or IV patients, with subsequent adjustment to achieve response.

Cardiac anesthesia: No initial dose reduction is required (see section Cardiac anesthesia in this section).

Overdose

As with all potent opioid analgesics, overdose would manifest as an increase in the predictable pharmacological effects of remifentanil. Because the action of Remifentanil Noridem is very short-acting, the potential for harmful effects from overdose is limited to the immediate period following drug administration. Response to discontinuation of the drug is rapid, with return to baseline within 10 minutes.

In case of overdose or suspected overdose, the following actions should be taken: discontinue administration of Remifentanil Noridem, maintain an open airway, initiate assisted or controlled ventilation with oxygen, and maintain adequate cardiovascular function. If respiratory depression is associated with muscle rigidity, a neuromuscular blocking agent may be required to facilitate assisted or controlled ventilation. Intravenous fluids, vasopressors, and other supportive measures may be used to treat hypotension.

As a specific antidote for treating severe respiratory depression and muscle rigidity, an opioid antagonist such as naloxone may be administered intravenously. It is unlikely that the duration of respiratory depression following remifentanil overdose will be longer than the duration of action of the opioid antagonist.

Shelf life

Special precautions for disposal and other handling

Remifentanilo Noridem must be prepared for intravenous use by adding, as appropriate, 1, 2, or 5 ml of diluent to obtain a reconstituted solution with a concentration of 1 mg/ml of remifentanil. This reconstituted solution is clear, colorless, and practically free of particles. After reconstitution, inspect the product visually (whenever the container allows) to determine the presence of particles, discoloration, or container damage. Discard any solution in which such defects are observed. The reconstituted product is for single use only. Any unused material must be discarded.

Remifentanilo Noridem must not be administered by manually controlled infusion without further dilution to concentrations of 20 to 250 micrograms/ml (50 micrograms/ml is the recommended dilution for adults and 20 to 25 micrograms/ml for pediatric patients aged 1 year or older).

Remifentanilo Noridem must not be administered by TCI without additional dilution (the recommended dilution for TCI is 20 to 50 micrograms/ml).

The chosen dilution depends on the technical capacity of the infusion device and the anticipated patient requirements.

For dilution, one of the following intravenous fluids must be used:

Water for injections

Glucose 5% solution for injection

Glucose 5% and sodium chloride 0.9% solution for injection

Sodium chloride 0.9% solution for injection

Sodium chloride 0.45% solution for injection

After dilution, visually inspect the product to ensure it is clear, colorless, practically free of particles, and that the container shows no damage. Discard any solution in which any of these defects are observed.

Compatibility of Remifentanilo Noridem with the following intravenous fluids has been demonstrated when administered through an intravenous catheter:

Ringer's lactate solution for injection

Ringer's lactate and glucose 5% solution for injection

Remifentanilo Noridem has been shown to be compatible with propofol when administered through an intravenous catheter.

Disposal of unused medicinal product and all materials that have been in contact with it must be carried out in accordance with local regulations.