# Stage 5 — Take action. Arrange the major STEMI decision points from ED arrival through transfer for primary PCI. Tasks assigned to different team members may proceed in parallel after activation.

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> url: https://mymerci.kr/pages/nclex_q.php?qn_id=372667&lang=en  
> language: en  
> subject: System-Specific Assessments  
> category: ROR

## Question

Stage 5 — Take action. Arrange the major STEMI decision points from ED arrival through transfer for primary PCI. Tasks assigned to different team members may proceed in parallel after activation.

Administer the prescribed oral P2Y12 inhibitor and IV unfractionated heparin after focused contraindication and bleeding checks

Immediately activate the catheterization laboratory and notify the interventional team when the symptoms and ECG establish STEMI

Transfer the client for primary PCI while maintaining rhythm, hemodynamic, oxygenation, and defibrillation monitoring

Obtain and interpret a 12-lead ECG within 10 minutes of ED arrival for the client with ongoing ischemic chest pain

While the team mobilizes, confirm aspirin, obtain right-sided leads, maintain IV access, and draw ordered studies without delaying reperfusion

## Explanation

Decision sequence
Obtain the ECG within 10 minutes → activate the catheterization laboratory immediately when STEMI is identified → complete aspirin confirmation, right-sided leads, IV access, and ordered studies in parallel → give prescribed antiplatelet and anticoagulant therapy after safety checks → transfer for primary PCI with continuous monitoring. Troponin and routine preparatory tasks do not precede activation as serial barriers.

## In-depth explanation

Step 1 — Establish the trigger
The first ECG is obtained and interpreted within 10 minutes. The ischemic symptoms and inferior ST-elevation pattern trigger immediate catheterization-laboratory activation.

Step 2 — Shift from a serial list to parallel teamwork
After activation, aspirin verification, right-sided leads, IV access, blood sampling, safety checks, and prescribed medications proceed while the interventional team prepares. Biomarker results do not delay reperfusion.

Step 3 — Transfer under surveillance
Maintain rhythm, hemodynamic, oxygenation, and defibrillation readiness through transfer because inferior and right ventricular infarction can produce bradyarrhythmia, heart block, or hypotension.

NCLEX rule
Sequence the decision gates, but do not mistake coordinated parallel tasks for reasons to postpone definitive treatment.

## Clinical scenario

Scenario (Stage 5 — Take action)
The 7-minute ECG establishes inferior STEMI, and right-sided leads support right ventricular involvement.

Clinical judgment target
Prioritize immediate reperfusion activation while other safety and medication tasks continue in parallel.

## Key concepts

- **Reperfusion activation** — Immediate mobilization of the interventional team after STEMI is identified, without waiting for biomarker confirmation.
- **Decision-gate sequencing** — Ordering the clinical decisions that unlock the next phase while acknowledging that assigned tasks can occur simultaneously.
- **Monitored transfer** — Continuous rhythm and hemodynamic surveillance with resuscitation readiness during transport to definitive reperfusion.

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