127+ Health Insights

Track Our Hearts provides the most advanced biometric analysis available, calculating 59 core metrics, 16 arrhythmia patterns, 10 clinical alarms, and dozens of real-time assessments to give you unprecedented understanding of your cardiovascular health.

Every single metric from our engine is documented below

Important: Wellness Platform Notice

Track Our Hearts is designed as a wellness platform to help you understand and monitor your cardiovascular health. While we strive for the highest quality in our metrics and calculations, this platform is not certified for clinical or medical diagnostic use. The insights provided are for wellness and informational purposes only and should not replace professional medical advice, diagnosis, or treatment. Always consult with qualified healthcare providers for medical decisions.

Basic Vitals

Core measurements that form the foundation of cardiovascular monitoring

Heart Rate

bpm

Instantaneous heart rate

Details: Continuously monitored from ECG, IBI, or pulse data. Normal resting range is 60-100 bpm for adults.

Potential Use: Primary indicator of cardiovascular function and fitness level

Inter-beat Interval

Time between consecutive heartbeats

Details: The foundation for HRV analysis. More variable IBI indicates better autonomic flexibility.

Potential Use: Used to calculate all HRV metrics and detect arrhythmias

SpO2

Blood oxygen saturation level

Details: Normal range is 95-100%. Values below 90% may indicate respiratory issues.

Potential Use: Essential for detecting hypoxemia and sleep apnea

HRV Time Domain

Beat-to-beat interval variations analyzed in the time domain

SDNN

Standard deviation of NN intervals (30-second window)

Details: Overall HRV measure. Higher values (>50ms) indicate better autonomic balance.

Potential Use: Gold standard for overall HRV assessment

SDNN5

Standard deviation of NN intervals (5-minute window)

Details: Long-term HRV measure capturing slower autonomic rhythms.

Potential Use: Better for assessing overall autonomic health

RMSSD

Root mean square of successive differences

Details: Reflects parasympathetic (rest & digest) activity. Higher is generally better.

Potential Use: Best metric for short-term HRV and stress assessment

pNN50

Percentage of intervals differing by >50ms

Details: Another parasympathetic marker. Values >20% indicate good vagal tone.

Potential Use: Sensitive to acute stress and recovery state

pNN20

Percentage of intervals differing by >20ms

Details: More sensitive than pNN50 for detecting subtle autonomic changes.

Potential Use: Useful for athletes tracking training adaptation

TINN

Triangular interpolation of NN histogram

Details: Geometric HRV measure resistant to artifacts and ectopic beats.

Potential Use: Robust metric for clinical HRV assessment

SD1

Short-term HRV from Poincaré plot

Details: Reflects beat-to-beat variability, primarily parasympathetic activity.

Potential Use: Visual and quantitative assessment of short-term variability

SD2

Long-term HRV from Poincaré plot

Details: Reflects overall variability including sympathetic contributions.

Potential Use: Indicates long-term heart rate dynamics

HRV Frequency Domain

Spectral analysis revealing autonomic nervous system balance

ULF Power

ms²

Ultra Low Frequency power (0.003-0.04 Hz)

Details: Reflects circadian rhythms and very slow regulatory processes.

Potential Use: Long-term health and metabolic assessment

VLF Power

ms²

Very Low Frequency power (0.04-0.15 Hz)

Details: Related to thermoregulation and hormonal processes.

Potential Use: Indicator of overall health status

LF Power

ms²

Low Frequency power (0.04-0.15 Hz)

Details: Mixed sympathetic and parasympathetic activity, affected by breathing.

Potential Use: Component of autonomic balance assessment

HF Power

ms²

High Frequency power (0.15-0.4 Hz)

Details: Pure parasympathetic activity, modulated by breathing.

Potential Use: Direct measure of vagal tone

LF/HF Ratio

ratio

Balance between sympathetic and parasympathetic

Details: Higher values suggest sympathetic dominance (stress), lower values suggest parasympathetic dominance (relaxation).

Potential Use: Simple indicator of autonomic balance

Total Power

ms²

Total spectral power (ULF+VLF+HF)

Details: Overall measure of autonomic activity and adaptability.

Potential Use: Global HRV assessment

HRV Non-Linear

Advanced complexity and chaos theory metrics

Sample Entropy

Complexity and unpredictability of heart rate

Details: Higher values indicate healthy complexity. Reduced in disease and aging.

Potential Use: Sensitive marker of cardiovascular health

Approximate Entropy

Regularity and predictability measure

Details: Lower values indicate more regular, predictable patterns.

Potential Use: Detects subtle changes in heart rate dynamics

MSE

Multiscale Entropy complexity index

Details: Assesses complexity across multiple time scales. Higher indicates better adaptability.

Potential Use: Advanced marker of system health and aging

DFA α1

Short-term fractal scaling exponent

Details: Reflects correlation properties at 4-16 beats. Normal ~1.0.

Potential Use: Detects subtle autonomic dysfunction

DFA α2

Long-term fractal scaling exponent

Details: Reflects correlation properties at 16-256 beats.

Potential Use: Long-term autonomic assessment

ECG Morphology

Detailed waveform analysis for clinical-grade cardiac assessment

QRS Duration

Time for ventricular depolarization

Details: Normal: 80-120ms. Prolonged QRS may indicate conduction delays.

Potential Use: Detects bundle branch blocks and ventricular hypertrophy

QRS Amplitude

Height of the R wave

Details: Varies by lead placement. Changes may indicate hypertrophy or pericardial effusion.

Potential Use: Assessment of ventricular mass and electrical activity

PR Interval

Time from atrial to ventricular activation

Details: Normal: 120-200ms. Prolonged PR suggests AV conduction delay.

Potential Use: Detects first-degree AV block and pre-excitation

QT Interval

Total time for ventricular activity

Details: Varies with heart rate. Prolonged QT increases risk of arrhythmias.

Potential Use: Critical for drug safety and arrhythmia risk

QTc (Bazett)

Rate-corrected QT using Bazett formula

Details: Normal: <450ms (men), <470ms (women). Most commonly used correction.

Potential Use: Standard QT assessment in clinical practice

QTc (Fridericia)

Rate-corrected QT using Fridericia formula

Details: More accurate at extreme heart rates than Bazett.

Potential Use: Preferred for bradycardia or tachycardia

QTc (Hodges)

Rate-corrected QT using Hodges formula

Details: Linear correction method, less affected by heart rate extremes.

Potential Use: Alternative QT correction method

ST Elevation

boolean

Elevation of ST segment >0.1mV

Details: May indicate acute myocardial infarction (heart attack).

Potential Use: Critical marker for STEMI detection

ST Depression

boolean

Depression of ST segment >0.05mV

Details: May indicate ischemia, strain, or digitalis effect.

Potential Use: Detects inadequate blood flow to heart muscle

ST Deviation

Magnitude of ST segment change

Details: Quantifies the degree of ST segment abnormality from baseline.

Potential Use: Monitors ischemia severity and treatment response

Ectopic Beats

Detection of premature and abnormal heartbeats

PVC

detection

Premature Ventricular Contraction

Details: Early beats from ventricles. Wide QRS, compensatory pause. Occasional PVCs are common.

Potential Use: Identifies ventricular ectopy burden

PAC

detection

Premature Atrial Contraction

Details: Early beats from atria. Normal QRS, non-compensatory pause. Usually benign.

Potential Use: Assesses atrial ectopy and AF risk

Ventricular Couplet

detection

Two consecutive PVCs

Details: May progress to ventricular tachycardia. Requires monitoring.

Potential Use: VT risk stratification

SVT Couplet

detection

Two consecutive PACs

Details: May trigger supraventricular tachycardia or atrial fibrillation.

Potential Use: Atrial arrhythmia risk assessment

Arrhythmia Patterns

Complex rhythm abnormalities and pattern recognition

Bigeminy

detection

Alternating normal and PVC beats

Details: Pattern: N-PVC-N-PVC. May indicate electrolyte imbalance or ischemia.

Potential Use: Specific arrhythmia pattern recognition

Trigeminy

detection

Every third beat is premature

Details: Pattern: N-N-PVC. Less concerning than bigeminy but still requires evaluation.

Potential Use: Arrhythmia burden assessment

Atrial Fibrillation

detection

Irregular rhythm with no P waves

Details: Most common arrhythmia. Increases stroke risk 5-fold. Detected via high HRV and low entropy.

Potential Use: Critical for stroke prevention

Ventricular Tachycardia

detection

≥3 consecutive PVCs

Details: Life-threatening if sustained. Heart rate typically >100 bpm from ventricles.

Potential Use: Emergency arrhythmia detection

Life-Threatening Arrhythmias

Critical cardiac events requiring immediate attention

Ventricular Fibrillation

detection

Chaotic ventricular activity

Details: Cardiac arrest rhythm. No organized QRS complexes. Requires immediate defibrillation.

Potential Use: Highest priority life-threatening detection

Ventricular Flutter

detection

Regular rapid ventricular rhythm

Details: Rate 240-300 bpm with saw-tooth pattern. May degenerate to VF.

Potential Use: Pre-arrest rhythm detection

Torsades de Pointes

detection

Polymorphic VT with long QT

Details: Twisting QRS complexes around baseline. Often drug-induced. QTc typically >500ms.

Potential Use: Specific dangerous arrhythmia requiring magnesium

Asystole

detection

No cardiac electrical activity

Details: Flatline rhythm lasting >4 seconds. Cardiac arrest.

Potential Use: Critical life-threatening detection

Rate & Conduction

Heart rate abnormalities and electrical conduction issues

Tachycardia

detection

Heart rate above threshold

Details: Default >180 bpm, customizable by patient profile. Can be normal during exercise.

Potential Use: Basic rhythm abnormality screening

Bradycardia

detection

Heart rate below threshold

Details: Default <40 bpm, customizable. Normal in athletes, concerning in others.

Potential Use: Detects slow heart rhythms requiring evaluation

Pause

detection

Gap between beats >3 seconds

Details: May indicate sinus arrest, AV block, or post-ectopic pause.

Potential Use: Identifies dangerous rhythm pauses

AV Block I (Mobitz I)

detection

Progressive PR prolongation

Details: Wenckebach phenomenon. Usually benign but may progress.

Potential Use: Conduction system monitoring

AV Block II (Mobitz II)

detection

Dropped beats without PR changes

Details: More serious than Mobitz I. May require pacemaker.

Potential Use: High-grade block detection

AV Block III

detection

Complete heart block

Details: No AV conduction. Atria and ventricles beat independently. Requires pacemaker.

Potential Use: Emergency conduction failure detection

Sleep & Respiratory

Overnight monitoring for sleep quality and breathing patterns

ODI4

events/hr

Oxygen Desaturation Index

Details: Number of times SpO2 drops ≥4% per hour. >5 suggests sleep apnea.

Potential Use: Sleep apnea screening and severity assessment

Time <90% SpO2

Hypoxemia burden

Details: Percentage of time with SpO2 below 90%. Should be <1% in healthy individuals.

Potential Use: Quantifies nocturnal hypoxemia severity

Signal Quality

Real-time assessment of data quality and reliability

Signal Quality Index

Real-time data quality score

Details: 0-100 scale. Considers noise, artifacts, baseline wander. >60% required for analysis.

Potential Use: Ensures reliable metric calculation

Average SQI

Rolling average signal quality

Details: 10-beat rolling average of signal quality scores.

Potential Use: Overall data reliability assessment

Baseline Wander

detection

Low frequency drift <0.5 Hz

Details: Caused by respiration, movement, or poor electrode contact.

Potential Use: Identifies need for filtering or electrode adjustment

HF Noise

detection

High frequency noise >40 Hz

Details: Electrical interference, muscle tremor, or poor grounding.

Potential Use: Identifies EMG contamination

Motion Artifact

detection

Movement-induced signal corruption

Details: Detected via accelerometer data and signal characteristics.

Potential Use: Prevents false alarms during exercise

Lead-Off

detection

Electrode disconnection

Details: Signal amplitude <20 µV indicates poor contact or disconnection.

Potential Use: Immediate user notification needed

Clinical Alarms

IEC 60601-1-8 compliant alarm system with prioritized alerts

VF Alarm

CRITICAL

Ventricular Fibrillation detected

Details: Latched alarm requiring acknowledgment. IEC 60601-1-8 highest priority.

Potential Use: Immediate life-saving intervention required

VFlutter Alarm

CRITICAL

Ventricular Flutter detected

Details: May rapidly degenerate to VF. Critical priority alarm.

Potential Use: Pre-arrest warning

Torsades Alarm

CRITICAL

Torsades de Pointes detected

Details: Polymorphic VT with QT prolongation. Often medication-related.

Potential Use: Requires immediate magnesium/cardioversion

Asystole Alarm

CRITICAL

Cardiac arrest - no activity

Details: No electrical activity >4 seconds. Highest priority.

Potential Use: CPR required immediately

VT Alarm

HIGH

Ventricular Tachycardia detected

Details: ≥3 consecutive PVCs. High priority monitoring required.

Potential Use: May require cardioversion

Complete Block Alarm

HIGH

Third-degree AV block

Details: Complete dissociation between atria and ventricles.

Potential Use: Pacemaker evaluation needed

Signal Lost

HIGH

No signal detected

Details: No beats detected for >1.5x expected asystole threshold.

Potential Use: Check electrode connections

Couplet Burst

HIGH

Multiple PVC couplets

Details: ≥2 couplets within 30 seconds. Increased VT risk.

Potential Use: Close monitoring required

Low Quality

MEDIUM

Poor signal quality

Details: Signal quality <60%. Metrics may be unreliable.

Potential Use: Adjust electrodes or reduce motion

Data Gap

MEDIUM

Data source interruption

Details: Gap >5 seconds detected. May affect trend analysis.

Potential Use: Check device connection

Motion & Activity

Movement detection and artifact compensation

Cadence

steps/min

Movement cadence from accelerometer

Details: Used to contextualize heart rate changes during activity.

Potential Use: Exercise intensity assessment

Power

watts

Estimated movement power

Details: Derived from accelerometer data. Correlates with metabolic demand.

Potential Use: Workload estimation

Motion Penalty

factor

Signal quality reduction factor

Details: 0.8x penalty applied when motion detected within 2 seconds.

Potential Use: Prevents false alarms during exercise

Patient Profiles

Customizable thresholds for different patient populations

Adult Brady

50 bpm

Adult bradycardia threshold

Details: Standard adult lower limit for heart rate alarms.

Potential Use: Age-appropriate alarm limits

Adult Tachy

180 bpm

Adult tachycardia threshold

Details: Standard adult upper limit for heart rate alarms.

Potential Use: Age-appropriate alarm limits

Adult QTc (M)

450 ms

Adult male QTc upper limit

Details: Prolonged QT increases torsades risk.

Potential Use: Gender-specific QT monitoring

Adult QTc (F)

470 ms

Adult female QTc upper limit

Details: Women have naturally longer QT intervals.

Potential Use: Gender-specific QT monitoring

Athletic Brady

38 bpm

Athlete bradycardia threshold

Details: Lower threshold for trained athletes with high vagal tone.

Potential Use: Prevents false bradycardia alarms

Athletic Tachy

200 bpm

Athlete tachycardia threshold

Details: Higher threshold for maximal athletic performance.

Potential Use: Exercise-appropriate limits

Pediatric Brady

80 bpm

Child bradycardia threshold

Details: Children have naturally higher heart rates.

Potential Use: Age-appropriate monitoring

Pediatric Tachy

220 bpm

Child tachycardia threshold

Details: Maximum heart rate higher in children.

Potential Use: Pediatric-specific limits

Pediatric QTc

440/460 ms

Child QTc limits (M/F)

Details: Slightly lower QTc thresholds for pediatric patients.

Potential Use: Pediatric long QT screening

Elderly Brady

45 bpm

Elderly bradycardia threshold

Details: Slightly lower threshold accounting for medications.

Potential Use: Geriatric-appropriate monitoring

Elderly Tachy

150 bpm

Elderly tachycardia threshold

Details: Lower maximum heart rate with aging.

Potential Use: Age-adjusted limits

Elderly QTc

460/480 ms

Elderly QTc limits (M/F)

Details: Slightly higher thresholds with aging and medications.

Potential Use: Medication safety monitoring

Adult Asystole

4000 ms

Adult asystole detection time

Details: 4 seconds without electrical activity triggers alarm.

Potential Use: Cardiac arrest detection

Athletic Asystole

5000 ms

Athlete asystole threshold

Details: Longer threshold for athletes with long pauses.

Potential Use: Prevents false arrest alarms

Pediatric Asystole

3000 ms

Child asystole threshold

Details: Shorter threshold for faster pediatric rates.

Potential Use: Pediatric arrest detection

Elderly Asystole

4000 ms

Elderly asystole threshold

Details: Standard threshold for older adults.

Potential Use: Geriatric monitoring

Advanced Analytics

Sophisticated algorithms and detection systems

Pan-Tompkins

algorithm

Advanced QRS detection

Details: Real-time R-peak detection with adaptive thresholds.

Potential Use: Foundation for all beat-based metrics

Welch PSD

algorithm

Power spectral density estimation

Details: 256-point Hann window, 50% overlap for frequency analysis.

Potential Use: HRV frequency domain calculation

IBI Buffer

30s/256

Short-term beat buffer

Details: Rolling buffer of 256 beats for 30-second HRV metrics.

Potential Use: Real-time HRV calculation

5-min Window

300s

Long-term analysis window

Details: 5-minute rolling window for frequency analysis.

Potential Use: Standard HRV assessment period

SpO2 Window

600s

10-minute SpO2 buffer

Details: Extended window for sleep apnea detection.

Potential Use: Respiratory event analysis

PVC Confidence

0.4-1.0

PVC detection confidence

Details: Based on QRS width, amplitude, compensatory pause.

Potential Use: Reduces false positive detections

PAC Confidence

0.4-0.7

PAC detection confidence

Details: Based on prematurity with normal QRS morphology.

Potential Use: Differentiates from PVCs

AF Confidence

0.75-0.85

Atrial fibrillation confidence

Details: Based on HRV parameters and entropy measures.

Potential Use: Prevents false AF detection

VF Confidence

0.9-0.95

VF detection confidence

Details: Based on rate >250 and disorganization.

Potential Use: Critical alarm accuracy

Source Priority

hierarchy

Data source prioritization

Details: IBI > Raw ECG > HR for timing accuracy.

Potential Use: Multi-device data fusion

Morphology Tracking

variability

QRS shape variability

Details: Coefficient of variation for QRS width and amplitude.

Potential Use: Polymorphic VT detection

Baseline Correction

adaptive

Adaptive baseline removal

Details: 100ms moving average excluding QRS complex.

Potential Use: Accurate interval measurement

State Machine

pattern

Ectopy pattern recognition

Details: Tracks beat sequences for bigeminy/trigeminy.

Potential Use: Complex arrhythmia patterns

Latched Alarms

memory

Critical alarm persistence

Details: Life-threatening alarms require acknowledgment.

Potential Use: IEC 60601-1-8 compliance

Debounced Alarms

filter

Burst detection filtering

Details: Prevents alarm fatigue from repetitive events.

Potential Use: Clinical usability

Multi-Device

isolation

Per-device state management

Details: Complete isolation between device instances.

Potential Use: Concurrent device monitoring

FFT Cache

optimization

Pre-allocated FFT buffers

Details: Reusable FFT objects for performance.

Potential Use: Real-time processing

Hann Window

256-point

Pre-computed window function

Details: Cached Hann window for spectral analysis.

Potential Use: Frequency domain accuracy

CRC8 Check

validation

Signal integrity verification

Details: Dallas/Maxim polynomial for data validation.

Potential Use: Data corruption detection

Zero-Order Hold

resampling

4Hz IBI resampling

Details: Uniform sampling for frequency analysis.

Potential Use: Spectral estimation

Alarm Router

IEC 60601

Priority-based alarm delivery

Details: Guaranteed UI delivery within 5 seconds.

Potential Use: Clinical alarm standards

Visual Indicators

UI signal

Alarm visual encoding

Details: Color and flash patterns by priority.

Potential Use: Immediate recognition

Audible Tones

IEC tones

Priority-specific alarm sounds

Details: Distinct tones for critical/high/medium.

Potential Use: Audio alarm differentiation

Compensatory Pause

detection

Post-PVC pause detection

Details: IBI >1.2x baseline after premature beat.

Potential Use: PVC confirmation

AF Gates

dual criteria

Enhanced AF detection

Details: Basic HRV criteria OR entropy/SD1:SD2 ratio.

Potential Use: Catches coarse AF patterns

Coming Soon - Even More Insights

We're Just Getting Started

Our platform is continuously evolving. We're working on revolutionary new features to give you the most comprehensive health and performance insights available.

Advanced Sleep Analysis

In Development

Comprehensive sleep stage detection, sleep quality scoring, and recovery insights.

REM, Deep, Light, and Wake stage detection
Sleep efficiency and consistency tracking
Heart rate dips and respiratory patterns
Personalized sleep optimization recommendations

Workout & Performance Analytics

In Development

Professional-grade training load, recovery, and performance optimization metrics.

Training load and intensity distribution
VO2max estimation and fitness trends
Recovery time and readiness scores
Lactate threshold and training zones

...and many more features including nutrition tracking, stress analysis, breathing exercises, and AI-powered health insights.

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