Autonomic tone
Controls that mostly shape sinus rate, respiratory coupling, and baroreflex-style variability.
Neurocardiac ECG Lab
Read the ECG as a brain-heart interface
The surface tracing is now framed through autonomic tone, respiratory coupling, and AV nodal braking. Instead of only tweaking voltages, you can move through realistic vagal and sympathetic teaching states, then inspect how those shifts alter the ECG paper, rhythm strip, and cardiac vector.
Active preset
Balanced Rest
API target
internal Next.js route handlers
Autonomic presets
Shift the tracing through realistic physiological states
Choose a preset, then fine-tune the grouped controls below.
Display toggles
ECG-paper realism
Paper speed
Lead layout
Faster paper speeds show fewer milliseconds across the same screen width, which makes interval inspection feel much closer to bedside ECG review.
Consult frames
Read the strip through neurocardiac scenarios
These frames push the lab beyond parameter twiddling. Pick the consult scenario, load the aligned physiology, and then decide what the strip is really saying versus what it could be mistaken for.
Syndrome frame
Acute neurogenic stress pattern
The tracing is fast, relatively fixed, and catecholamine-weighted. The teaching question is whether the ECG is reflecting primary cardiac disease or an autonomic response to acute CNS injury or severe stress physiology.
Highest-yield next data
- • Serial troponins and dynamic ECG trend rather than one tracing in isolation
- • Bedside correlation with the neurological trigger, echo pattern, and hemodynamic context
Compare mode
Best mechanism versus attractive misread
Best mechanism
Central sympathetic surge with neurocardiac spillover, producing a tachycardic and repolarization-shifted surface pattern.
- • Neurogenic ECG changes are often diagnosis-adjacent but not diagnosis-complete.
- • The wrong move is to let the strip erase the neurological context that generated it.
Weaker alternative
Primary ACS by ECG appearance alone
An isolated tracing cannot outrank the physiology. When sympathetic context is overwhelming, repolarization distortion can be secondary and demands correlation rather than reflexively becoming the diagnosis.
Case Mode
Practice neurocardiac consult framing before the reveal
Neurocritical brain-heart interpretation. Separate primary conduction disease from centrally mediated autonomic modulation.
Study progress
Track your case accuracy inside this module
Cases completed
0/ 4
Correct reveals
0
Accuracy
0%
Clinical vignette
Acute SAH with a misleading fast strip
A neurocritical patient develops tachycardia and repolarization distortion after subarachnoid hemorrhage.
Chief complaint
The bedside team worries the ECG means primary ischemic heart disease rather than the neurologic event itself.
History
The tracing changed after the hemorrhage, the patient is adrenergic and critically ill, and the first question is whether the heart is primary or responding to the brain.
Syndrome frame
This is a neurocardiac consult problem, not a pure waveform recognition problem. The localization question lives in the central autonomic network and sympathetic surge.
Exam findings
- • Fast, relatively fixed rhythm
- • Acute neurocritical trigger already established
- • Repolarization changes that could tempt overcalling ACS
Prompt
Which consult frame best fits, and why is ACS by first-strip appearance alone the weaker interpretation?
- Time the ECG to the neurological event.
- Ask what serial data would settle the ambiguity.
Localization cues
- • The brain injury precedes the ECG distortion.
- • Sympathetic crisis can explain rate and repolarization drift without primary coronary occlusion.
Differential traps
- • Do not let a single ECG erase the neurological context that generated it.
- • Do not assume catecholamine physiology excludes true cardiac disease either; that is why serial data matter.
Next data to request
- • Serial ECGs and biomarkers
- • Bedside hemodynamics and neurocritical trend
Your consult frame
Current frame read
Post-ictal neurocardiac pattern
The strip is fast, adrenergic, and relatively rigid immediately after a seizure-like event. The teaching task is to decide whether this is transient cortical-autonomic spillover or primary cardiac disease masquerading as post-ictal physiology.
Strongest mechanism
Post-ictal sympathetic surge with transient neurocardiac spillover and reduced sinus variability.
Follow-up modules
Neuro TutorBrain Atlas12-Lead ECG Explorer
Compare mode
Your frame versus the best-fit frame
Selected: Post-ictal neurocardiac pattern
Post-ictal sympathetic surge with transient neurocardiac spillover and reduced sinus variability.
A seizure-timed adrenergic state can produce rate acceleration and repolarization distortion before the heart itself is the main pathology, so trend and context matter more than one strip.
Best fit: Acute neurogenic stress pattern
Central sympathetic surge with neurocardiac spillover, producing a tachycardic and repolarization-shifted surface pattern.
- • Serial troponins and dynamic ECG trend rather than one tracing in isolation
- • Bedside correlation with the neurological trigger, echo pattern, and hemodynamic context
Conduction timing
Intervals that change AV nodal delay, depolarization width, and repolarization timing.
Morphology and acquisition
Amplitude and projection controls that shape what the surface leads record and how strongly they appear.
3D cardiac activation
Dipole replay through the beat
Lead constellation
Which lead sees the strongest vector
Representative beat phase
Scrub through activation timing
Generate ECG to animate a representative beat.