# A 10-year-old child with a closed femur fracture is admitted to the pediatric unit. The child is in skeletal traction with a Thomas splint. Which nursing intervention should be the highest priority during the first 24 hours post-admission?

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## 문제

A 10-year-old child with a closed femur fracture is admitted to the pediatric unit. The child is in skeletal traction with a Thomas splint. Which nursing intervention should be the highest priority during the first 24 hours post-admission?

## 보기

1. Monitor for signs of fat embolism syndrome including respiratory distress, altered mental status, and petechial rash. **✔ 정답**
2. Assess pin sites for signs of infection and perform pin site care according to facility protocol
3. Encourage the child to perform isometric exercises to maintain muscle strength in the affected leg
4. Provide age-appropriate diversional activities to prevent boredom and promote psychological well-being.

**정답: 1**

## 해설

Fat embolism syndrome is a life-threatening complication of femur fractures within 24-72 hours, requiring priority monitoring for respiratory distress and altered mental status. Other interventions like pin site care and diversional activities are important but not immediate priorities.

## 심화 해설

Understanding the Priority: Why Fat Embolism Syndrome Surveillance Comes First

Following a closed femur fracture, the immediate post-injury period carries a risk of life-threatening systemic complications. In a 10-year-old child placed in skeletal traction, the highest nursing priority within the first 24 hours is vigilant monitoring for fat embolism syndrome (FES). This condition occurs when fat globules from the bone marrow enter the venous system, travel to the pulmonary capillaries, and can also reach the systemic circulation, causing a classic triad of symptoms [2]. While fat embolization to the lungs is a common subclinical event in long bone fractures, the progression to the clinical syndrome of FES is rare but can be rapidly fatal [2][3].

The urgency of this assessment is rooted in the pathophysiology and typical timeline of FES. The onset of symptoms is often insidious, but signs can develop within 12 to 72 hours after the initial injury, making the first 24 hours a critical surveillance window [3]. The clinical diagnosis relies on identifying key features, as there is no single definitive laboratory test [2][3]. You must be attuned to the earliest indicators:

- Respiratory distress: This is often the first clinical manifestation. Fat globules obstruct pulmonary capillaries, triggering an inflammatory cascade that damages the alveolar-capillary membrane, leading to hypoxemia, tachypnea, and dyspnea [2][4].

- Altered mental status: Neurological disturbances result from cerebral emboli and cerebral edema. A child who was previously alert may become confused, agitated, or drowsy, a change that can precede respiratory symptoms [2][4].

- Petechial rash: This is a pathognomonic but often late or transient sign. It typically appears on the upper body, including the chest, neck, axillae, and conjunctivae, and is caused by microvascular occlusion from fat emboli [2][4].

Early recognition before the syndrome becomes fully established is critical to reduce preventable mortality, as FES can progress to acute respiratory distress syndrome and cerebral dysfunction [3]. While other interventions are important, they address non-urgent needs during this initial stabilization phase.

Analyzing the Other Options

- Option 2: Assess pin sites for signs of infection and perform pin site care. Pin site infection is a valid concern with skeletal traction, but it is a subacute complication. Signs of local infection such as erythema, purulent drainage, or tenderness would not be expected to manifest within the first 24 hours post-insertion. This assessment becomes a higher priority in the days following admission, not in the initial critical window.

- Option 3: Encourage isometric exercises. Maintaining muscle strength is an important long-term goal for preventing disuse atrophy. However, in the first 24 hours after a significant fracture, the limb is typically immobilized and extremely painful. Aggressive encouragement of exercises is not the priority when the child is at risk for a systemic, life-threatening complication. Immobilization of the fracture site is actually a key preventive measure for FES, as movement can promote further embolization of fat [2].

- Option 4: Provide age-appropriate diversional activities. Addressing the psychological and developmental needs of a hospitalized child is an essential component of pediatric nursing care. However, this is a psychosocial intervention that is secondary to physiological stabilization. The immediate priority is ensuring the child’s airway, breathing, and neurological status are stable. Diversional activities can be integrated into the care plan once the child is medically stable.

The evidence confirms that FES is a rare but potentially fatal complication predominantly affecting patients following long bone fractures, diagnosed by clinical exclusion [3]. Its presentation can extend beyond the classic triad, requiring a high index of suspicion [4]. Therefore, your systematic assessment focusing on the respiratory, neurological, and integumentary systems is the most critical nursing action to detect this syndrome early and facilitate prompt intervention.References (research sources)

- [2]Fat Embolism Syndrome: Evolving Perspectives on Diagnosis and Care.Research articleShaikh N, Alali B, Amara UE, Nashrah UE, Alkheamy N, Ummunnisa F, Ghouri S. (2025) · DOI: 10.7759/cureus.96136

- [3]Fat Embolism Syndrome: A Case Series from a Single Tertiary Care Hospital.Case reportBorgohain B, Naveen AS, Khonglah TG. (2026) · DOI: 10.13107/jocr.2026.v16.i06.7418

- [4]Suspected Fat Embolism Syndrome in the Setting of Ballistic Long Bone Fractures: A Case Report.Case reportHusain I, Andrews D. (2025) · DOI: 10.5811/cpcem.35398

## 임상 시나리오

Rapid Surveillance for Fat Embolism SyndromeCritical 24-Hour Monitoring After Long Bone Fracture
The highest priority is monitoring for fat embolism syndrome (FES), a life-threatening complication occurring 12 to 72 hours post-injury. Focus on the classic triad: respiratory distress, altered mental status, and petechial rash.

Assess respiratory function first, as tachypnea and hypoxemia are often the earliest signs. Neurologic changes like confusion or agitation signal systemic embolization. A petechial rash, especially on the anterior chest and axilla, is a characteristic but late finding.

CautionDo not wait for all three triad signs to appear. Unexplained hypoxemia or a drop in SpO2 in a patient with a long bone fracture should trigger immediate escalation and oxygen support.

## 핵심 개념

- **Fat Embolism Syndrome (FES)** — A serious complication where fat globules from bone marrow enter the bloodstream, causing a classic triad of respiratory distress, altered mental status, and petechial rash, typically 12-72 hours post long bone fracture.
- **Skeletal Traction** — A method of immobilizing a fracture by applying a pulling force directly to the bone via pins or wires to align and stabilize the fracture.
- **Thomas Splint** — A type of traction splint used for femur fractures that provides fixed traction by applying force from the ischial tuberosity to the end of the limb.

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