Spica cast is used for?

Appeared in: ISRO- 2016

Explanation

A spica cast is designed to immobilize a joint by incorporating the trunk of the body; the name of the cast corresponds to the joint being immobilized.
The image clearly depicts a hip spica cast, which encases the trunk and lower extremities to stabilize the hip joint.
Hip spica casts are a standard treatment for conditions like developmental dysplasia of the hip (DDH) and femur fractures, particularly in pediatric patients.

Option A: An arm fracture is typically immobilized using a short-arm or long-arm cast, which does not involve the trunk.
Option B: A leg fracture is usually managed with a short-leg or long-leg cast. These casts extend up the leg but do not include the trunk.
Option C: A foot injury is immobilized with a short-leg cast, splint, or boot, which only covers the foot and lower leg.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Application and types of orthopedic casts, specifically the Spica cast as background academic context rather than a clinical decision trigger.
Caring for a patient in a spica cast, especially a child, requires meticulous nursing care to prevent serious complications like skin breakdown, infection, and compartment syndrome.
Perineal care is critical. A common technique is 'double-diapering,' where a smaller diaper is tucked inside the cast opening and a larger diaper is placed over the outside to prevent soiling.
Nurses must be vigilant for signs of 'cast syndrome' (superior mesenteric artery syndrome), a rare but serious complication where the cast compresses the abdomen, causing decreased gastrointestinal motility. Symptoms include abdominal pain, distention, nausea, and vomiting.

How to Approach the Question

First, analyze the image provided. Observe that the cast covers the patient's trunk and extends down the legs, holding them apart.
Next, analyze the question stem, which asks for the use of a 'Spica cast'.
Connect the visual information with the term. The type of cast shown is a classic example of a spica cast.
Based on the cast's location (covering the torso and legs), deduce its primary function: to immobilize the joint that connects the trunk to the legs.
Identify this joint as the hip.
Review the options and select 'Hip' as it directly corresponds to the function and location of the cast shown.

Concept Tested & Keywords

Concept Tested: Application and types of orthopedic casts, specifically the Spica cast.
Stem keywords: Spica cast, used for
Lead-in keywords: used for
Clinical cues: The image of a child in a full-body cast is a strong visual cue for a hip spica.

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E6 Nursing Brunner Adult Health 3SA Vol 1 Part 4 pp. 116-118, 122-124

Practise the full ISRO- 2016

Attempt every question from this paper in a timed mock, then review the full solution for each one.