# A 7-year-old child with hemophilia A is admitted to the pediatric unit after falling from a bicycle and sustaining a knee injury. The child's knee is swollen, painful, and has limited range of motion. The parents are anxious and asking about treatment options. What is the most appropriate initial nursing intervention?

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## 문제

A 7-year-old child with hemophilia A is admitted to the pediatric unit after falling from a bicycle and sustaining a knee injury. The child's knee is swollen, painful, and has limited range of motion. The parents are anxious and asking about treatment options. What is the most appropriate initial nursing intervention?

Priority nursing intervention for a child with hemophilia A experiencing joint bleeding

## 보기

1. Apply ice packs to the affected knee for 20 minutes every hour
2. Encourage active range of motion exercises to prevent joint stiffness
3. Administer factor VIII concentrate as prescribed immediately **✔ 정답**
4. Position the knee in a dependent position to promote circulation

**정답: 3**

## 해설

Factor VIII concentrate administration is the priority intervention for hemophilia A patients experiencing bleeding episodes to restore clotting ability and prevent further bleeding.

Hemophilia A is an inherited bleeding disorder caused by a deficiency or dysfunction of factor VIII, which is essential for blood clotting. When a child with hemophilia A sustains an injury, even minor trauma can cause severe bleeding, and intra-articular bleeding (hemarthrosis) in particular can lead to permanent joint damage if not treated promptly.

The most important intervention for this child is the immediate administration of factor VIII concentrate. This replacement therapy directly addresses the underlying pathophysiology by providing the missing clotting factor needed for stable clot formation and cessation of bleeding. The timing of factor VIII administration is critical, as early treatment within a few hours of bleeding onset can prevent progression to severe hemarthrosis and reduce the risk of long-term joint complications such as chronic arthritis and joint deformity.

Factor VIII concentrate temporarily restores normal hemostatic function, enabling fibrin clot formation at the bleeding site. The dose and frequency are determined by the severity of the bleeding, the child's weight, and baseline factor VIII levels. For joint bleeding, the goal is typically to achieve factor VIII levels of 30–50% of normal.

Nursing responsibilities include verifying the correct type and dose of factor concentrate, ensuring proper reconstitution if using a lyophilized product, administering it by slow intravenous injection or infusion as prescribed, and monitoring for adverse reactions. Documentation of administration time, lot number, and patient response is essential for tracking treatment efficacy and inventory management.

This intervention takes priority over other comfort measures because addressing the underlying bleeding problem is essential to prevent irreversible joint damage and chronic disability in pediatric hemophilia patients.

## 심화 해설

Understanding the Priority: Acute Joint Bleeding in Hemophilia A

When a child with hemophilia A presents with an acute joint bleed (hemarthrosis), the immediate physiological priority is to stop the bleeding as quickly as possible. Hemophilia A is an X-linked recessive disorder characterized by a deficiency of functional coagulation factor VIII [1]. Without sufficient factor VIII, the coagulation cascade is interrupted, and the body cannot form a stable fibrin clot to seal the injured blood vessel. In a joint space, this leads to uncontrolled bleeding, causing swelling, intense pain, and limited range of motion. The synovium, which lines the joint, is highly vascular, and repeated bleeding into this confined space triggers an inflammatory response. Synovial cells release enzymes and pro-inflammatory cytokines, and iron from degraded red blood cells accumulates. Over time, this process leads to synovial hypertrophy and cartilage destruction, a condition known as hemophilic arthropathy, which is a major cause of long-term disability [2].

The most critical and evidence-based initial nursing intervention is therefore to replace the missing clotting factor. Administering factor VIII concentrate as prescribed directly addresses the underlying pathophysiology by temporarily correcting the coagulation defect. This allows the clotting cascade to proceed, forming a stable clot and arresting the hemorrhage. The speed of this intervention is paramount; every minute of continued bleeding contributes to joint damage and pain. In the context of hospitalized patients with hemophilia, the management of acute bleeding is a core clinical challenge that demands immediate factor replacement as the cornerstone of therapy [1].

Analyzing the Other Options

The other options are either secondary supportive measures or are contraindicated in the acute phase of a joint bleed.

-   Option 1: Apply ice packs. While local cooling can cause vasoconstriction and provide some analgesia, it is an adjunctive comfort measure, not the primary intervention to stop bleeding. It does not address the missing clotting factor. Applying ice is appropriate after or in conjunction with factor administration but should never delay it. The immediate priority is systemic factor replacement to halt the hemorrhage at its source.

-   Option 2: Encourage active range of motion exercises. This intervention is harmful during an acute bleed. Movement of the affected joint will disrupt any fragile clots that are trying to form, mechanically aggravate the injured synovial vessels, and significantly worsen the bleeding and pain. Rest and immobilization of the joint in a position of comfort are indicated in the acute phase. Range of motion exercises are a critical part of rehabilitation but are only initiated after the bleeding has stopped and the acute pain and swelling have subsided, as part of a strategy to prevent chronic arthropathy [2].

-   Option 4: Position the knee in a dependent position. Elevating the affected extremity is a standard measure to reduce swelling by promoting venous return and reducing hydrostatic pressure in the capillaries. Placing the knee in a dependent position would have the opposite effect, increasing blood flow and pressure to the area, which would exacerbate swelling and prolong bleeding. The correct positioning is elevation on a pillow, combined with immobilization.

Clinical Reasoning and Long-Term Implications

The decision to immediately administer factor VIII is not just about resolving the current crisis; it is a pivotal moment in preventing lifelong disability. The concept of early, aggressive treatment is the foundation of modern pediatric hemophilia care. The timing of intervention in childhood decisively influences lifetime outcomes [2]. A single, poorly managed joint bleed can initiate a cycle of inflammation and synovial damage that predisposes the joint to future "target joint" bleeding. By rapidly arresting the bleed with factor concentrate, you are directly preventing the accumulation of blood in the joint space, thereby minimizing synovial irritation and the subsequent risk of developing chronic, debilitating hemophilic arthropathy. This transition from on-demand treatment to a paradigm of early prophylaxis and immediate, aggressive management of breakthrough bleeds is what has dramatically improved the quality of life and life expectancy for individuals with hemophilia [1,2]. The nurse's role is to recognize the acute bleed, prioritize the administration of the prescribed factor concentrate without delay, and then implement supportive measures like rest, ice, and elevation.References (research sources)

- [1]Clinical Scenarios in Hospitalized Patients With Hemophilia.Research articleAlvarez-Payares JC, Ariza Parra EJ, Trejos Tenorio AMM, De La Peña Lozano I, Ribero-Vargas D. (2026) · DOI: 10.7759/cureus.106284

- [2]When and How to Start Prophylaxis in Children with Hemophilia.Research articleOlivieri M, Königs C. (2026) · DOI: 10.1159/000551547

## 임상 시나리오

Acute Hemarthrosis in Hemophilia A: Nursing PriorityImmediate Factor Replacement to Prevent Joint Damage
The absolute priority for a suspected acute joint bleed is to administer factor VIII concentrate immediately as prescribed, without waiting for imaging or full assessment completion. This directly corrects the coagulation defect and halts bleeding.

After the factor infusion is initiated, apply the RICE protocol as adjunctive measures: Rest the joint in a position of comfort, apply Ice for 15-20 minutes per hour, use a compression bandage, and Elevate the limb above the heart level to reduce swelling.

CautionNever apply heat or encourage active range of motion during an acute bleed, as this will exacerbate hemorrhage. Immobilize the joint and avoid any weight-bearing until pain and swelling have significantly subsided.

## 핵심 개념

- **Hemarthrosis** — Bleeding into a joint space, commonly the knees, ankles, or elbows, leading to swelling, pain, and limited range of motion.
- **Factor VIII Concentrate** — A medication used to replace the missing clotting factor in hemophilia A, allowing the coagulation cascade to form a stable clot.
- **Hemophilic Arthropathy** — Chronic, degenerative joint disease caused by recurrent bleeding into the joint, leading to synovial hypertrophy and cartilage destruction.

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