Fragmin® can not be administered intramuscularly!
Treatment of acute deep vein thrombosis and pulmonary embolism
Fragmin® is introduced PC 1-2 times a day. In this case, you can immediately begin therapy with indirect anticoagulants (antagonists of vitamin K). Combination therapy should be continued until the prothrombin index reaches therapeutic value (usually not earlier than 5 days later). Treatment of patients in outpatient settings can be carried out at the same doses that are recommended for inpatient treatment.
· When administered once a day - 200 IU / kg body weight PC. Single daily dose should not exceed 18000 IU. Monitoring anticoagulant activity of the drug is not necessary.
· With the introduction of 2 times a day - 100 IU / kg body weight PC 2 times a day. Monitoring of anticoagulant activity can be avoided, but it should be borne in mind that it may be required for the treatment of special groups of patients (see section "Special instructions"). The recommended maximum concentration of the drug in blood plasma should be 0.5-1 IU anti-Xa / ml.
Prevention of blood coagulation in the extracorporeal circulation system during hemodialysis or hemofiltration
Fragmin® should be entered in / in, choosing the dosing regimen from the following.
· Patients with chronic renal failure or patients without risk of bleeding
Such patients usually require a minor dose adjustment, and therefore most patients do not need to monitor anti-Xa levels frequently. When the recommended doses are administered during hemodialysis, a blood plasma level of 0.5-1 IU anti-Xa / ml is usually achieved.
· With a duration of hemodialysis or hemofiltration no more than 4 hours - in / in struyno 30-40 IU / kg body weight, followed by iv drip introduction of 10-15 IU / kg / hour, or once in / in struino in a dose of 5000 IU.
· With a duration of hemodialysis or hemofiltration more than 4 hours - in / in struyno 30-40 IU / kg body weight, followed by iv dropwise administration of 10-15 IU / kg / hour.
· Patients with acute renal failure, or patients with a high risk of bleeding
Intravenous injection of 5-10 IU / kg of body weight followed by iv dropwise administration of 4-5 IU / kg / hour. In patients who undergo hemodialysis for acute renal failure, the drug has a narrower therapeutic index than patients in chronic hemodialysis (therefore, they need adequate monitoring of anti-Xa levels).The recommended maximum plasma level should be 0.2-0.4 IU anti-Xa / ml.
Prevention of thrombosis during surgical interventions
Fragmin® should be entered PC. Monitoring of anticoagulant activity, as a rule, is not required. When the drug is used in recommended doses, the maximum plasma concentrations are from 0.1 to 0.4 IU anti-Xa / ml.
· When conducting operations in general surgical practice
- Patients with a risk of developing thromboembolic complications - PC 2500 IU for 2 hours before the operation, then after the operation - PC for 2500 IU / day (every morning) for the entire period, while the patient is on bed rest (usually 5 to 7 days).
- Patients with additional risk factors for thromboembolic complications (eg, patients with malignant tumors) - Fragmin® should be used during the entire period, while the patient is on bed rest (usually 5 - 7 days or more).
a. at the beginning of prophylaxis the day before the operation: 5000 IU PC the evening before the operation, then 5000 IU PC every evening after surgery.
b. at the beginning of prophylaxis on the day of the operation: 2500 IU PC 2 hours prior to surgery and 2500 IU PC in 8-12 hours, but not earlier than 4 hours after the end of the operation. Then, from the next day, every day, 5000 IU PC.
· When performing orthopedic operations (for example, in operations on hip replacement)
Fragmin® should be administered for up to 5 weeks after surgery by selecting one of the dosing regimens listed below.
a. at the beginning of prophylaxis the day before the operation: 5000 IU in the evening on the eve of the operation, then 5000 IU per / every evening after the operation.
b. at the beginning of prophylaxis on the day of the operation: 2500 IU SC for 2 hours before the operation and 2500 IU SC after 8-12 hours, but not earlier than 4 hours after the end of the operation. Then the next day every morning - 5000 IU each PC.
at. at the beginning of prophylaxis after operation: 2500 IU SC after 4 - 8 hours after the operation, but not earlier than 4 hours after the end of the operation. Then the next day to 5000 IU per day.
Prevention of thromboembolic complications in patients with a therapeutic disease in the acute phase and limited mobility (including under conditions requiring bed rest)
Fragmin® should enter the by 5000 IU once a day, usually for 12 to 14 days or longer (in patients with continued mobility restriction). Monitoring of anticoagulant activity, as a rule, is not required.
Unstable angina or myocardial infarction without segment elevation ST on the ECG
Monitoring of anticoagulant activity, as a rule, is not required, but it should be borne in mind that it may be required in the treatment of special groups of patients (see section "Special instructions"). The recommended maximum plasma concentration in the plasma should be 0.5-1 IU anti-Xa / ml. Fragmin® injected sc, 120 IU / kg body weight every 12 hours. The maximum dose should not exceed 10,000 IU every 12 hours. Simultaneously, in the absence of contraindications, it is advisable to conduct therapy with acetylsalicylic acid in a dose of 75 to 325 mg / day. Therapy should continue until the patient's clinical condition becomes stable (usually at least 6 days), or longer (at the doctor's discretion). Then it is recommended to go to a long-term therapy with Fragmin® in a constant dose up to revascularization (percutaneous interventions or aortocoronary bypass surgery).The total duration of therapy should not exceed 45 days.
Dose of Fragmin® is selected taking into account the sex and body weight of the patient:
- women with a body weight of less than 80 kg and men weighing less than 70 kg should be administered 5000 IU SC every 12 hours;
- for women with a body weight of 80 kg and more, and for men weighing 70 kg or more, 7500 IU should be injected every 12 hours.
Long-term treatment to prevent recurrence of venous thromboembolism in patients with malignant neoplasms
200 IU / kg body weight once a day. Single daily dose should not exceed 18000 IU.
about 150 IU / kg body weight once a day, using syringes with a fixed dose (Table 1).
Table 1. Determination of the dose of Fragmin® depending on the body weight for the treatment period of 2-6 months. Body weight, kg | Dose of Fragmin®, IU |
£ 56 | 7 500 |
57 - 68 | 10 000 |
69 - 82 | 12 500 |
83 - 98 | 15 000 |
³ 99 | 18 000 |
Thrombocytopenia - in the case of thrombocytopenia, which developed against the background of chemotherapy with the number of platelets < 50 000 / mkl, application of Fragmin® should be suspended until the platelet count is increased to more than 50,000 / μL. For the concentration of platelets from 50 000 / μL up to 100 000 / mkl dose of the drug should be reduced by 17% - 33% relative to the initial dose, depending on the patient's body weight (Table 2).When the platelet count is restored to the level of ³ 100 000 / mkl, the drug should be used in a full dose.
Table 2. Decrease in the dose of Fragmin® with thrombocytopenia 50 000 / μL - 100 000 / μL.
Body weight, kg | Planned dose of Fragmin®, IU | Reduced dose of Fragmin® | Dose reduction,% |
£ 56 | 7 500 | 5 000 | 33 |
57 - 68 | 10 000 | 7 500 | 25 |
69 - 82 | 12 500 | 10 000 | 20 |
83 - 98 | 15 000 | 12 500 | 17 |
³ 99 | 18 000 | 15 000 | 17 |
Renal insufficiency - in the case of renal insufficiency with a serum creatinine concentration exceeding 3 times the upper limit of the norm, the dose of Fragmin® should be adjusted so as to maintain the therapeutic level of anti-Xa 1 IU / mL (range 0.5 to 1.5 IU / mL) measured within 4-6 hours after the administration of dalteparin. If the level of anti-Xa, below or above the therapeutic range, the dose of Fragmin® should be increased or decreased, respectively, and the measurement of anti-Xa should be repeated after the administration of 3 to 4 new doses. The dose adjustment should be performed before the therapeutic level of anti-Xa is reached.
Use in children
Safety and effectiveness of dalteparin sodium in children is not established. At present, it is not possible to give recommendations on the dosage regimen in children.
Monitoring of anti-Xa-factor activity in children
For some groups of patients receiving dalteparin sodium, for example for children, it is necessary to consider the expediency of determining the maximum level of anti-Xa activity in about 4 hours after the administration of the drug. When the drug is administered once a day, the maximum level of anti-Xa activity in general cases should be maintained within 0.5-1.0 IU / ml when measured at 4 hours after administration. In the case of impaired renal function or its physiological changes, for example in infants, careful monitoring of anti-Xa activity. In the prevention regime, the level of anti-Xa activity in general cases should be maintained within 0,2-0,4 IU / ml.