Risk stratification is like creating a personalized danger-meter for your health. It’s a systematic way to figure out who’s most likely to face a serious problem, like cardiac arrest, and who’s probably in the clear. In the context of the study “Risk Stratification for Future Cardiac Arrest after COVID-19 Vaccination” by Nicolas Hulscher and Peter A. McCullough (published February 26, 2025, in the World Journal of Cardiology), this protocol is designed to spot people at risk of sudden heart failure after getting a COVID-19 vaccine. Let’s break down how the risk stratification protocol works, in simple terms, like a recipe for assessing heart risk.

The risk stratification protocol big picture
The risk stratification protocol isn’t about scaring people, it’s about precision healthcare. Not everyone’s at risk, but for some, the vaccine might have left a ticking time bomb. Risk stratification turns vague worries into actionable steps, tailoring care to the individual. It’s science doing what it should: asking questions, testing theories, and protecting people based on evidence.
Part one of this series, ‘Unveiling Post-COVID Vaccine Heart Risk’ explains the reports significance and shows the human side of this issue like:
- Ernesto Ramirez Jr. – A Father’s Claim of Vaccine-Induced Cardiac Arrest
- Trista Martin – A Mother’s Account of Sudden Death
- Rory James Nairn – A Fiancée’s Accusation Backed by Coroner Findings
Why the risk stratification protocol is useful
Think of the risk stratification protocol as like a weather forecast for your heart. Instead of guessing if a storm’s coming, you get data to predict trouble. The study says cardiac arrest risk spiked after vaccination — 133% higher after one Pfizer dose, 186% after two, based on historical data. Young people, especially athletes, might be hit hardest because exercise can trigger these hidden issues. By identifying who’s at risk early, doctors could:
- Warn them to avoid intense activity.
- Start treatments, the study suggests enzymes to clear spike protein.
- Prevent sudden deaths that might otherwise get blamed on “unknown causes.”

What is the Risk Stratification Protocol?
The risk stratification protocol is a step-by-step plan doctors can use to check if someone’s heart might be silently gearing up for a major malfunction, specifically, cardiac arrest, where the heart stops beating due to chaotic electrical activity. Think ventricular tachycardia or fibrillation. The idea is that the COVID-19 vaccine, particularly mRNA types like Pfizer or Moderna, might cause hidden inflammation in the heart called subclinical myopericarditis, that doesn’t show obvious symptoms until it’s too late. Risk stratification categorizes your risk — low, medium, or high risk, so you can act before disaster strikes.
How the risk stratification protocol works: The Steps
The risk stratification protocol combines a few key tools to paint a picture of someone’s risk. Here’s how it goes:
Step 1: Vaccine History Check
Doctors ask: How many doses did you get? When? Which vaccine?
Why? More doses or recent shots might mean more exposure to the vaccine’s ingredients, like the spike protein that could linger and harm your heart.
Step 2: Blood Tests for Spike Protein Antibodies
They test your blood for antibodies against the SARS-CoV-2 spike protein, the thing the vaccine makes your body produce. Why? High levels might suggest the spike protein is still hanging around, potentially irritating your heart muscle over time.
Step 3: Heart Tests
Tools like an ECG (electrocardiogram, which tracks heart rhythm), echocardiogram (ultrasound of the heart), or MRI (detailed heart imaging) check for signs of damage or inflammation. Why? These can spot scars, swelling, or electrical glitches that might not cause symptoms yet but could lead to cardiac arrest later.
Step 4: Risk Scoring
Based on the results, your risk is ranked:
- Low risk: Normal tests with low antibodies.
- Medium risk: Some odd test results or higher antibodies.
- High risk: Multiple doses, recent shots, high antibodies, and heart test red flags. Why? This helps decide who needs closer monitoring or treatment.
Real-world example of the risk stratification protocol at work
Imagine a 17-year-old soccer player who got two mRNA shots last year. She’s fine now, but the protocol checks her: two recent doses, elevated spike antibodies, and an ECG showing a slight rhythm glitch. She’s flagged as medium-to-high risk. Her doctor might say, “Take it easy on the field and let’s monitor your symptoms,” potentially saving her life if inflammation was brewing.

Hope and help for long-COVID and the vaccine injured
Vaccine Injury Support Groups

A U.S.-based, patient-led nonprofit focused on supporting those with long-term adverse effects from COVID-19 vaccines.
What They Do: Provide online forums, financial assistance for medical costs, and push for scientific research into vaccine injuries. They’ve documented over 3,400 patient stories on their website.
Why It Matters: React19 highlights cases like Ernesto Ramirez Jr., whose father claims his 16-year-old son died of cardiac arrest post-Pfizer shot, emphasizing the need for recognition beyond what official channels often acknowledge.
Vaccine Injured and Bereaved UK (VIBUK) A UK-based group supporting those injured or bereaved by COVID-19 vaccines.
What They Do: Offer peer support, campaign for better government assistance, and raise awareness—like noting the UK’s first vaccine injury care program launched in 2023. They’ve voiced frustration over delays, with comments like “4 years after the first vaccination and still no action,” at a 2025 COVID inquiry.
Why It Matters: Rory Nairn’s case, where a 26-year-old died of myocarditis linked to Pfizer, shows how such groups amplify individual stories to demand accountability.
Canadian Vaccine Injury Support Tied to Canada’s Vaccine Injury Support Program (VISP), launched in June 2021, with grassroots efforts like those from Take Action Canada.
What They Do: VISP has processed 774 claims by mid-2022, offering no-fault compensation, while informal groups like sorryigotvaxxed.com (started September 2021) provide forums for sharing stories like Trista Martin’s—whose mother claims her 18-year-old daughter died of cardiac arrest post-vaccine.
Why It Matters: They bridge the gap where official systems may lag, giving a voice to those feeling abandoned.
These groups fill a void for those who feel gaslit by doctors or ignored by systems like the U.S. National Vaccine Injury Compensation Program (VICP), which excludes COVID-19 vaccines (handled by CICP instead). If you’re looking to connect, React19’s website, VIBUK’s outreach, or Canada’s VISP are starting points. Just know the landscape’s messy—part support, part battleground over truth.
Watch this one-minute, informative video to learn more about heart and other post-COVID vaccine health risks and how to safeguard your health.
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