Case Report: Smoked Kratom Triggers Cardiac Arrest by Unmasking Brugada Syndrome in 28-Year-Old

Why it matters

This case documents a novel and potentially under-recognized mechanism by which kratom can cause sudden cardiac death — particularly dangerous for people with undiagnosed inherited heart conditions like Brugada syndrome.

The big picture

Kratom's cardiac risks have primarily been studied through suspected overdose deaths and a handful of arrhythmia case reports. Brugada syndrome affects an estimated 1 in 2,000 people and is often silent until triggered by a drug or fever. This case suggests that kratom's ion channel-modulating properties could unmask life-threatening arrhythmias in susceptible individuals — a mechanism distinct from opioid-related respiratory depression.

Key findings

• A 28-year-old man suffered out-of-hospital cardiac arrest after smoking a hand-rolled cigarette confirmed to contain kratom
• Bystanders performed CPR and two AED shocks were required to restore circulation
• An ECG showed a classic Type 1 Brugada pattern — associated with sudden cardiac death risk
• Cardiac imaging found no structural abnormalities; a family history revealed sudden death in an identical twin
• The patient was diagnosed with Brugada syndrome unmasked by kratom and was referred for implantable cardioverter-defibrillator placement

What they say

The case authors noted that "kratom possesses opioid activity and ion channel-modulating properties that may precipitate malignant arrhythmias," and called for increased clinical awareness of cardiovascular risks.

Bottom line

Kratom can unmask a potentially fatal inherited heart rhythm disorder — highlighting a cardiovascular risk that may go undetected until a cardiac emergency occurs.