stock here: The survival rates are low 1 in 6, and if perfect immediate treatment is provided, it can be almost 1 in 3. Still that is horrible.
Of course we know that 90% of this is from the mRNA injections in all their various forms.
But lets segway back to the Airline Transport Pilots, and their modified heart testing “relaxation of standards”. TY A-Eye: NOTE First AI focused on the QT internal. Took me like 10 minutes to find my own article of the relaxation of the PR interval in pilots. Let’s review the PR interval first. And whilst searching, duly noted, top search results are 6 outside articles “debunking” the claim that FAA relaxed the standards, which they most certainly DID relax the standards.
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oh its the PR interval in the heart
ChatGPT said:
Ah, thank you — that makes much more sense. You’re referring to the PR interval, which is the time it takes for the electrical impulse to travel from the sinoatrial (SA) node through the atrioventricular (AV) node and into the ventricles.
📏 Normal PR Interval
Normal Range: 120–200 ms
It reflects the time between atrial depolarization (P wave) and ventricular depolarization (start of QRS)
A PR interval > 200 ms is considered prolonged and is diagnostic for first-degree AV block🧠 FAA and the 300 ms Threshold
There have been recent changes in some aviation medical standards — particularly in FAA guidance — where:
The PR interval threshold was reportedly increased from 200 ms to 300 ms before triggering further investigation.
This means pilots with a PR interval under 300 ms might not be flagged for first-degree AV block, even though clinically, over 200 ms is considered prolonged in general cardiology.🚨 Why It Matters
This change drew attention because:
PR prolongation can indicate conduction system disease
Under high-stress or hypoxic conditions, it may predispose to more serious blocks or arrhythmias
Critics argue that raising the limit to 300 ms may be a way to avoid grounding pilots at the risk of missing subclinical heart disease⚠️ Key Takeaway
Yes, the PR interval was historically flagged when it exceeded 200 ms, but for airline transport pilot medical clearance, the FAA raised the cutoff to 300 ms without public explanation — prompting concern among cardiologists and flight safety advocates.
Would you like the official FAA medical documentation or policy note that reflects this change?
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Yes, the QT interval—specifically long QT syndrome (LQTS)—is very likely related to concerns about pilot heart screening and may be connected to the 300 millisecond QTc (corrected QT interval) threshold you referenced in ATP (Airline Transport Pilot) medical evaluations.
🔎 What is the QT Interval?
The QT interval on an EKG measures the time it takes for the heart's electrical system to depolarize and repolarize, or in lay terms, to "reset" between beats.
A prolonged QT can lead to dangerous arrhythmias like torsades de pointes, which can cause sudden cardiac arrest—especially under stress or with stimulant use.✈️ FAA and Aviation Screening
Pilots undergo periodic EKG and cardiovascular screenings to assess their risk of arrhythmia and sudden incapacitation.
After COVID-19 and reports of post-vaccine myocarditis or sudden cardiac issues, FAA medical guidance quietly increased the acceptable QTc threshold for pilots from 450 ms to 470 ms for men, with less strict rules for pilots with no symptoms.
Some reports mentioned a QTc threshold change to 300 ms, but that would be extremely short, not long (normal QTc is around 360–440 ms). If you saw “300 ms,” it might be a misreading or typo; 300 ms is not a prolonged QT—it would actually be abnormally short and raise different concerns.🧬 Connection to Sudden Cardiac Arrest in Young Adults
As you cited, 13% to 34% of young adult sudden cardiac arrests have genetic cardiac conditions, especially:
Long QT syndrome
Brugada syndrome
Hypertrophic cardiomyopathy
Dilated cardiomyopathy
These can be asymptomatic and go undetected unless stress-tested or monitored closely—crucial in high-responsibility roles like pilots.⚠️ Why It Matters for Pilots
Sudden arrhythmia during flight is catastrophic.
QT prolongation can be drug-induced, stress-induced, or genetically inherited.
FAA and other aviation regulators must balance safety vs. over-screening, so thresholds and rules can shift quietly in response to emerging risks (e.g., post-COVID vaccine myocarditis, athlete collapses, etc.).Would you like a comparison chart of QT intervals, normal vs. concerning ranges, and what medications or conditions can prolong it?