Related Experiment Video
Updated: Aug 19, 2025

Application of an Amplitude-integrated EEG Monitor Cerebral Function Monitor to Neonates
Published on: September 6, 2017
Normal ECG standards and percentile charts for infants, children and adolescents
Hung-Chi Lue1, Mei-Hwan Wu1, Jou-Kou Wang1
1Department of Cardiology, National Taiwan University Children's Hospital, Taipei, Taiwan.
Insights
This study establishes normal electrocardiogram (ECG) standards for 15 key parameters in children from birth through adolescence. These findings provide essential reference ranges for pediatric cardiology and clinical research.
Area of Science:
- Pediatric Cardiology
- Biomedical Engineering
- Clinical Diagnostics
Background:
- Existing normal electrocardiogram (ECG) standards often lack comprehensive age coverage from birth to adolescence.
- Previous studies have not fully addressed the evolving cardiac physiology during growth and development in pediatric populations.
- There is a need for updated and complete ECG reference ranges across all pediatric age groups.
Purpose of the Study:
- To establish a comprehensive set of normal electrocardiogram (ECG) standards for pediatric populations.
- To define age- and sex-specific reference ranges for key ECG parameters from birth through adolescence.
- To provide updated data for the accurate interpretation of pediatric ECGs.
Main Methods:
- Selection of 15 key electrocardiogram (ECG) parameters from a large database.
- Statistical analysis including calculation of mean, standard deviation, and 2nd to 98th percentiles for each parameter.
- Construction of percentile charts to visualize age- and sex-specific normal ECG ranges.
Main Results:
- Established the ranges and distributions for 15 key normal electrocardiogram (ECG) parameters.
- Determined age- and sex-specific means and 2nd to 98th percentiles for all analyzed parameters.
- Developed percentile charts illustrating normal ECG standards across the pediatric age spectrum.
Conclusions:
- A complete set of normal electrocardiogram (ECG) standards for 15 key parameters is now available for children from birth to adolescence.
- These established standards will aid clinicians and researchers in the accurate interpretation and evaluation of pediatric ECGs.
- This resource supports the understanding of cardiac development and normative values in pediatric populations.
Background:
Normal ECG standards in newborns, infants, children and adolescents have been collected and published by many authors. Only those by Davignon et al., Rijinbeek et al. and our two studies covered all ages from birth to adolescence. The standards reflecting the growth and development of the heart in infants, children and adolescents remained to be studied and explored.
Methods:
We selected from our ECG database, after discussions and consultation, 15 key ECG parameters and analyzed for their age- and sex-specific mean, standard deviation and 2nd to 98th percentiles and their percentile charts were constructed.
Results:
The ranges and distributions of the normal ECG standards, means and 2nd to 98th percentiles of 15 key parameters were established.
Conclusion:
A complete set of normal ECG standards of 15 key parameters from birth to adolescents is available for clinicians and researchers.
Related Concept Videos
ECG Interpretation of Rhythms
Components of the Electrocardiogram
The primary components of a normal ECG waveform in Normal sinus rhythm(NSR) include the P wave, PR interval, QRS complex, ST segment, T wave, and occasionally a U wave.
ECG waveforms are divided by vertical and horizontal lines at standard intervals.
The horizontal axis measures time and rate, and the vertical axis measures amplitude or voltage....
Electrocardiogram
Three major waveforms are present in a typical ECG recording: the P wave, the QRS complex, and...
Electrocardiogram Fundamentals
An electrocardiogram (ECG) is a diagnostic tool for identifying cardiac conditions such as arrhythmias, conduction abnormalities, and myocardial ischemia.
Definition
An electrocardiogram (ECG) visualizes the heart's electrical activity by tracing the electrical movement associated with each heartbeat on a graph or monitor. As the heart beats, an electrical wave passes through it, correlating with the cardiac cycle events.
Parts of an ECG
An ECG utilizes electrodes on the skin...
Guidelines For Measuring Vital Signs
Before taking a patient's vital signs, a nurse would consider and assess the patient's comfort level and ensure appropriate equipment is available.
Percentile
Correlation between ECG and Cardiac Cycle
A cardiac action potential originates in the SA node and spreads throughout the atria and the AV node in approximately 0.03 seconds. This results in the P wave in an ECG and triggers atrial contraction. The action potential is then briefly slowed at the AV node, allowing the atria to contract and fill the ventricles with blood before...

