Use bupivacaine can only doctors who have experience in conducting local anesthesia or under their supervision. To achieve the required degree of anesthesia, the minimum possible dose should be administered.
Under no circumstances should you allow accidental intravascular drug administration. It is recommended to perform an aspirate test before and during the administration of the drug. The drug should be administered slowly, at a rate of 25-50 mg / min or fractional, maintaining continuous verbal contact with the patient and controlling the heart rate. During epidural administration, a dose of 3-5 ml of bupivacaine with epinephrine is preset. With a random intravascular injection, there is a short-term increase in the heart rate, with a random intrathecal injection, a spinal block appears.If there are toxic signs, the administration is immediately stopped.
Below are the estimated doses that need to be corrected depending on the depth of anesthesia and the patient's condition.
Infiltration anesthesia: 5-60 ml of the drug at a concentration of 2.5 mg / ml (12.5-150 mg bupivacaine) or 5-30 ml of the drug at a concentration of 5 mg / ml (25-150 mg bupivacaine).
Diagnostic and therapeutic blockade: 1 -40 ml of the drug at a concentration of 2.5 mg / ml (2.5-100 mg of bupivacaine), for example, trigeminal blockade of 1-5 ml of the drug (2.5-12.5 mg of bupivacaine) and the cervical and thoracic sympathetic node a trunk of 10-20 ml (25-50 mg of bupivacaine).
Intercostal blockade: 2-3 ml of the drug at a concentration of 5 mg / ml (10-15 mg of bupivacaine) per nerve, not exceeding the total amount - 10 nerves.
Major blockades (eg, epidural block, sacral or brachial plexus blockade): 15-30 ml of the drug at a concentration of 5 mg / ml (75-150 mg bupivacaine).
Anesthesia in Obstetrics (eg epidural and caudal anesthesia for natural delivery): 6-10 ml of the drug at a concentration of 2.5 mg / ml (15-25 mg of bupivacaine) or 6-10 ml of the drug at a concentration of 5 mg / ml (30-50 mg bupivacaine ).
After every 2-3 hours, repeated administration of the drug in the initial dose is allowed.
Epidural anesthesia in cesarean section: 15-30 ml of the drug in a concentration of 5 mg / ml (75-150 mg of bupivacaine).
Epidural analgesia in the form of intermittent bolus injection: initially inject 20 ml of the drug at a concentration of 2.5 mg / ml (50 mg bupivacaine), then every 4-6 hours, depending on the number of damaged segments and the patient's age, 6-16 ml of the drug at a concentration of 2.5 mg / ml (15 -40 mg of bupivacaine).
Epidural analgesia in the form of continuous infusion (for example, postoperative pain):
Type of blockade | Concentration | Scope | Dose |
Epidural introduction (at the lumbar level) |
|
|
|
Bolus * | 2.5 mg / ml | 5-10 ml | 12.5-25 mg |
Infusion | 2.5 mg / ml | 5-7.5 ml / hr | 12.5-18.75 mg ** |
Epidural introduction (at the thoracic level) |
|
|
|
Bolus * | 2.5 mg / ml | 5-10 ml | 12.5-25 mg |
Infusion | 2.5 mg / ml | 2.5-5 ml / h | 6.25-12.5 mg |
Epidural introduction (natural childbirth) |
|
|
|
Bolus * | 2.5 mg / ml | 6-10 ml | 15-25 mg |
Infusion | 2.5 mg / ml | 2-5 ml / hr | 5-12.5 mg |
* If during the previous hour the drug was not administered bolus.
** Do not exceed the maximum recommended daily dose (see below).
During the surgical intervention, additional administration of the drug is possible.
With the simultaneous use of narcotic analgesics, the dose of bupivacaine should be reduced.
With prolonged administration of the drug, the patient should regularly monitor blood pressure, heart rate and other signs of potential toxicity. If toxic effects occur, the drug should be discontinued immediately.
Recommended maximum doses
The maximum recommended single dose, calculated at 2 mg / kg body weight, is 150 mg for adults for four hours. This is equivalent to 60 ml of the drug at a concentration of 2.5 mg / ml (150 mg bupivacaine) and 30 ml drug at a concentration of 5 mg / ml (150 mg bupivacaine).
The maximum recommended daily dose is 400 mg. However, when calculating the total daily dose, it is necessary to take into account the patient's age, physique and other significant conditions.
Children aged 1-12 years
Regional anesthesia should be performed by a doctor who has experience working with children and who has the appropriate technique of administration.
Doses in children, given in the table, are indicative. Variability is possible. Children with high body weight, as a rule, need to reduce the dose, based on the ideal body weight. In determining the methods of anesthesia and taking into account the individual characteristics of patients should use the generally accepted guidelines for anesthesia.
It is necessary to enter the minimum dose necessary to achieve sufficient anesthesia.
| Concentration, mg / ml | Volume, ml / kg | Dose, mg / kg | Start of action, min | Duration of action, hours |
Acute pain |
|
|
|
|
|
Caudal epidural anesthesia | 2,5 | 0,6-0,8 | 1,5-2 | 20-30 | 2-6 |
Lumbar epidural anesthesia | 2,5 | 0,6-0.8 | 1,5-2 | 20-30 | 2-6 |
Thoracic epidural anesthesia(b) | 2,5 | 0,6-0,8 | 1,5-2 | 20-30 | 2-6 |
Regional blockade (for example, blockade and infiltration of small nerves | 2,5 |
| 0,5-2 |
|
|
5 |
| 0,5-2 |
|
|
Blockade peripheral nerves (eg, blockade iliac-inguinal / iliac-hypogastric nerves) | 2,5 |
| 0,5-2 | a) |
|
5 |
| 0,5-2 | a) |
|
a) - the beginning and duration of peripheral nerve blockage depends on the nature of the blockade and dose
b) - with thoracic epidural anesthesia, the drug is administered in ever increasing doses until the desired level of anesthesia is reached.
The dose in children is calculated based on 2 mg per kg of body weight.
In order to prevent the drug from entering the vascular bed, the aspiration test should be performed before and during the administration of the main dose. The drug should be administered slowly, dividing the total dose into several injections, especially with lumbar and thoracic epidural anesthesia, continuously observing the indicators of vital organs.
Peritonsillar infiltration anesthesia in children from 2 years of age: in a dose of 7.5 mg and 12.5 mg per tonsil with a concentration of bupivacaine 2.5 mg / ml.
Blockade of ilio-inguinal / ilio-hypogastric nerves in children from 1 year: 0.1-0.5 mg / kg body weight with a bupivacaine concentration of 2.5 mg / ml, equivalent to 0.25-1.25 mg / kg body weight.
For children aged 5 years and older, the drug can be administered in a concentration of bupivacaine 5 mg / ml, equivalent to 1.25-2 mg / kg.
Blockade of the penis: 0.2-0.5 ml / kg with a bupivacaine concentration of 5 mg / ml, equivalent to 1.0-2.5 mg / kg.
Data on epidural anesthesia in children (bolus or continuous administration) are limited.
Cooking method
If a solution with a concentration of 2.5 mg / ml is required, it is possible to dilute the preparation at a concentration of 5 mg / ml only with compatible solvents, such as a 0.9% sodium chloride solution for injection, since the properties of the preparation may change after dilution, which may lead to precipitation. Breeding should be carried out only by qualified personnel with mandatory visual control before use. It is possible to use only clear solutions without visible particles.
The drug solution is intended for single use only.