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Liều lượng và cách dùng

Profilnine SD is administered intravenously after reconstitution. The infusion rate should not exceed 10 ml per minute because administering the medication too rapidly may cause vasomotor reactions. The appropriate dose varies from person to person and should be determined by a healthcare provider.

The dose may depend on factors such as:

• Cân nặng cơ thể
• Baseline factor IX level
• Mức độ yếu tố IX mong muốn
• Vị trí và mức độ chảy máu
• Individual response to treatment
• Whether treatment is needed around a surgical procedure

How Is the Profilnine SD Dose Calculated?

According to the prescribing information, approximately 1 unit of factor IX per kilogram of body weight can be expected to increase circulating factor IX levels by about 1%. However, individual responses may vary.

A healthcare provider may estimate the required dose using the following formula:

Body weight (kg) × desired increase in factor IX (%) × 1 unit/kg = factor IX units required

Factor IX levels should be monitored to help determine whether the desired level has been achieved and maintained.

Typical Dose of Profilnine SD for Hemophilia B

Factor IX dosing depends on bleeding severity. For minor to moderate bleeding, levels are raised to 20–30% every 16–24 hours, with treatment lasting 1–2 days for minor bleeds and 2–7 days for moderate ones.

For major bleeding, levels are first raised to 30–50%, then maintained at 20% until healing, typically over 3–10 days.

For surgery, levels are raised to 30–50% beforehand (up to 50% for dental extractions) and maintained until healing, usually 7–10 days, with doses given every 16–24 hours throughout. In short, more severe bleeding requires higher factor IX levels and longer treatment.