A 30-year-old female post-RTA has persistent pain uncontrolled by analgesics. Compartment pressure is 90 mmHg with absent pulse. What is the treatment?

Appeared in: INI-CET EXAM -2026

Explanation

The patient's clinical picture points to acute compartment syndrome (ACS), a surgical emergency that threatens limb viability.
A compartment pressure of 90 mmHg is critically elevated. According to clinical guidelines, an absolute pressure of 30 mmHg or higher is an indication for immediate surgical intervention.
The absent pulse is a late and severe sign of vascular compromise, indicating that blood flow to the distal limb has been severely obstructed.
Emergency fasciotomy is the definitive, limb-saving surgical procedure to release the high pressure, restore blood flow, and prevent irreversible necrosis of muscle and nerve tissue.

Option B: Observation is inappropriate and dangerous in ACS. The condition progresses rapidly, and any delay in treatment will lead to permanent tissue death, functional loss of the limb, and potentially amputation.
Option C: Increasing analgesics masks the cardinal symptom of ischemic pain without addressing the underlying cause, which is the dangerously high pressure. This can create a false sense of improvement while irreversible tissue damage continues.
Option D: External fixation is a procedure to stabilize a bone fracture. While a fracture is a common cause of ACS, the fixation device itself does not relieve the pressure within the muscle compartment. The immediate, limb-saving priority is decompression via fasciotomy.

Clinical Relevance

Nursing practice connection: Knowing Management of Acute Compartment Syndrome helps nurses interpret findings accurately and avoid errors in routine assessment, medication administration, and patient teaching.
A nurse's primary role is the early recognition of compartment syndrome by frequently assessing the '6 Ps' (Pain, Paresthesia, Pallor, Paralysis, Pulselessness, Poikilothermia) in any patient with an extremity injury.
Any report of pain that is out of proportion to the injury or is not relieved by analgesics must be immediately escalated to the physician, as this is the earliest and most reliable sign of ACS.
Patient Safety: Never apply ice or elevate the limb high above the heart in suspected ACS. Ice can cause vasoconstriction and elevation can reduce arterial inflow, both of which can worsen ischemia.

How to Approach the Question

First, identify the hallmark signs of a clinical emergency in the question stem. The phrase 'persistent pain uncontrolled by analgesics' is a major red flag for ischemic pain.
Next, analyze the objective data provided. A compartment pressure of 90 mmHg is critically high compared to the normal range of 0-10 mmHg and the surgical threshold of ~30 mmHg.
Recognize that an 'absent pulse' is a late and limb-threatening sign, confirming severe vascular compromise.
Synthesize these findings: the patient has severe acute compartment syndrome, a surgical emergency.
Evaluate the options based on this diagnosis. The only option that definitively treats ACS by relieving pressure is emergency fasciotomy.
Eliminate other options: Observation is too passive, analgesics only mask the problem, and external fixation treats the bone but not the immediate pressure crisis.

Concept Tested & Keywords

Concept Tested: Management of Acute Compartment Syndrome
Stem keywords: post-RTA, persistent pain, uncontrolled by analgesics, compartment pressure 90 mmHg, absent pulse
Lead-in keywords: What is the treatment
Clinical cues: Compartment pressure 90 mmHg indicates severe pressure (normal is 0-10 mmHg).
Clinical cues: Absent pulse is a late, critical sign of vascular compromise.

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E6 Nelson Textbook of Pediatrics(2024) — Volume 1 p. 623-625

E6 Nursing Brunner Adult Health 3SA Vol 2 Part 3 p. 122-124

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