Refractory VF, Subtle STEMI, Rectus Haematoma & More

Emergency Medicine Lessons from ED GovCast Episode 7

ED GovCast Episode 7 explores some of the most challenging and high-stakes cases in emergency medicine — from cardiac arrest and subtle ECG findings to vascular emergencies and safeguarding dilemmas.

Each scenario highlights the importance of rapid recognition, team communication, and evidence-based intervention.

1. Refractory Ventricular Fibrillation (VF)

Case Overview

A 40-year-old female collapsed and was found in ventricular fibrillation (VF). Despite prompt CPR and defibrillation, VF persisted after 18 shocks.

Key Concepts

Refractory VF: VF persisting after ≥3 shocks and cycles of high-quality CPR.

Possible trigger: R-on-T phenomenon — a premature ventricular contraction occurring during the repolarization phase, precipitating VF.

Management Strategies

Antiarrhythmics: Amiodarone, Lidocaine.

Post-arrest care: Consider Beta-blockers.

Modify adrenaline dosing frequency to avoid pro-arrhythmic effects.

Optimize defibrillation pad placement and ensure firm skin contact.

Consider DSED (Double Sequential External Defibrillation) or Vector-Change Defibrillation if standard shocks fail.

Learning Point: Refractory VF demands creative, team-based adaptation — combining technical precision with calm leadership.

🔗 Further Reading:

AHA – Defibrillation Strategies

R-on-T Phenomenon Overview

2. Subtle STEMI Detection

Case Overview

A 40-year-old male presented with chest pain described as “cardiac in nature.”

His ECG showed inferior ST depression and subtle ST elevation in leads I and aVL — initially easy to overlook.

Learning Point

Even minor ST elevation in high-lateral leads (I, aVL) may represent critical coronary occlusion, especially if mirrored by reciprocal depression.

Low-voltage ECGs can mask life-threatening STEMIs — trust your clinical suspicion and recheck serial ECGs.

Governance Note: In every chest pain case, document ECG interpretation and senior review clearly — subtle STEMIs are a known cause of delayed reperfusion.

3. Rectus Sheath Haematoma Post-Thrombolysis

Case Overview

An elderly female presented with abdominal pain, initially thought to be urinary retention.

CT KUB revealed a rectus sheath haematoma, secondary to recent thrombolysis and DOAC use.

Key Points

Risk factors: Trauma, anticoagulants, post-thrombolysis.

Management:

Stop anticoagulants immediately.

Reverse DOAC effects if possible.

Conservative management (monitoring, transfusion) unless active bleeding persists.

Learning Point

Post-thrombolysis patients with abdominal pain require a high index of suspicion for internal bleeding.

Never assume benign causes without imaging correlation.

🔗 Further Reading: Rectus Sheath Haematoma – EMDocs

4. Basilar Artery Thrombus

Case Overview

A patient presented with low GCS and vague neurological symptoms.

CT Head was initially normal, but CT Angiography later revealed a basilar artery thrombosis.

Learning Points

Suspect posterior circulation stroke in unexplained coma or low GCS.

Early CT Angio is essential for timely intervention.

Before thrombolysis, always exclude aortic dissection as a potential source of emboli.

Clinical Insight: Basilar artery occlusion is a neurological emergency — delay in recognition often results in catastrophic brainstem infarction.

🔗 Further Reading: NEJM – Basilar Artery Occlusion

5. Paediatric Safeguarding: Alcohol and Self-Discharge

Case Overview

An adolescent under local authority care (LAC) presented to the ED with alcohol in possession and expressed a wish to self-discharge.

Safeguarding Considerations

Conduct a mental capacity assessment — is the young person able to understand the risks-

A safe discharge requires a responsible adult — not a peer or potentially exploitative “friend.”

Clarify parental responsibility and ensure social services involvement if there’s doubt.

Learning Point

Children and adolescents cannot be discharged to unsafe environments.

Document all safeguarding discussions, inform social care promptly, and keep the patient within the hospital’s duty of protection until safe transfer is ensured.

Governance Reminder: Safeguarding is not optional — it’s a statutory responsibility for every clinician.

Governance Reflection: What Episode 7 Teaches Us

Across all five cases, several core themes emerge that reflect modern ED governance priorities:

Early recognition saves lives — subtle STEMIs and posterior strokes demand proactive investigation.

Team adaptability in resuscitation — refractory VF and new defibrillation strategies highlight innovation under pressure.

Safety beyond medicine — safeguarding vulnerable youth and considering hidden bleeding are as vital as pharmacological precision.

Documentation = Protection — in governance reviews, good documentation reflects both good care and clinical reasoning.

“Every ECG, every scan, every conversation can change the story — if we pay attention.”

FAQs: Emergency Medicine Insights from Episode 7

1. What defines Refractory VF-

VF that persists after at least 3 shocks and cycles of high-quality CPR, requiring alternative defibrillation techniques or pharmacological support.

2. What is DSED (Double Sequential Defibrillation)-

Delivering two shocks in rapid sequence using two defibrillators to improve defibrillation success in refractory VF.

3. How can clinicians identify a Subtle STEMI-

Look for small but localized ST elevation (especially in aVL or V1) with reciprocal depression elsewhere. Serial ECGs and troponins are key.

4. What should be suspected after thrombolysis if a patient reports abdominal pain-

Rectus sheath or retroperitoneal bleeding — both are known delayed complications of anticoagulation.

5. When does safeguarding override autonomy in adolescents-

If the child lacks capacity or faces immediate risk, the duty of care and child protection takes precedence over self-discharge requests.

Conclusion: Precision, Protection, and Proactivity

ED GovCast Episode 7 underscores that emergency medicine is as much about foresight as it is about speed.

From managing life-threatening arrhythmias to subtle ECG clues and safeguarding vulnerable youth, the key takeaway is clear:

“Great emergency clinicians don’t just react — they anticipate, verify, and protect.”

Every case, when reflected upon, adds another layer of safety to the system — and another lesson to the clinician’s practice.

🔗 References & Further Reading:

AHA – Defibrillation Strategies

R-on-T Phenomenon

NEJM – Basilar Artery Occlusion

EMDocs – Rectus Sheath Haematoma

AHA 2023 Cardiac Arrest Guidelines