Zebrafish Electrocardiography
Zebrafish Electrocardiography - Related Videos
05:15
Zebrafish Electrocardiography (ECG): A Minimally Invasive Assay to Evaluate Cardiac Function
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2023
This video shows how to perform electrocardiography (ECG or EKG) measurements, a test which measures the electrical activity of the heart, on a zebrafish.
09:13
In Vivo Surface Electrocardiography for Adult Zebrafish
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Cited by 33 •
2019
Here, we present a reliable, minimally invasive, and cost-effective method to record and interpret electrocardiograms in live anesthetized adult zebrafish.
11:17
Acquisition and Analysis of an ECG (electrocardiography) Signal
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2023
Source: Peiman Shahbeigi-Roodposhti and Sina Shahbazmohamadi, Biomedical Engineering Department, University of Connecticut, Storrs, Connecticut An electrocardiograph is a graph recorded by electric potential changes occurring between electrodes placed on a patient's torso to demonstrate cardiac activity. An ECG signal tracks heart rhythm and many cardiac diseases, such as poor blood flow to the heart and structural abnormalities. The action potential created by contractions of the heart wall...
09:23
Confirmation of Myocardial Ischemia and Reperfusion Injury in Mice Using Surface Pad Electrocardiography
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Cited by 11 •
2016
During murine myocardial ischemia/reperfusion surgery, correct placement of the occluding ligature is typically confirmed by visible observation of myocardial pallor. Herein, a method of electrocardiographically confirming ischemia and reperfusion, to supplement observed myocardial pallor, is demonstrated in male C57Bl/6 mice.
04:36
Noninvasive Electrocardiography in the Perinatal Mouse
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Cited by 3 •
2020
Here, we present a noninvasive electrocardiography (ECG) protocol, optimized for early postnatal mice, that does not require the use of anesthetics.
FAQs
Surface electrodes detect voltage changes generated as cardiac cells depolarize and repolarize. These changing electrical states produce the waveform recorded during zebrafish electrocardiography. Because the signal reflects organized cardiac activity, researchers can examine waveform features as indicators of how the heart’s electrical system is functioning rather than relying only on visible cardiac phenotypes.
Waveform features and intervals provide information about heart rhythm and electrical conduction. Deviations from expected patterns can indicate abnormal cardiac physiology, allowing investigators to connect an electrical measurement with a functional disturbance. This makes the recording useful for identifying changes that may not be fully apparent from an observable cardiac phenotype alone.
Genetic, environmental, and drug-induced influences can alter the electrical activity captured from the zebrafish heart. Comparing recordings across these conditions helps researchers determine whether a change is associated with inherited biology, external exposure, or pharmacological treatment. The resulting patterns can support investigation of disease mechanisms and evaluation of effects on cardiac function.
Zebrafish electrocardiography links cardiac electrical activity with developmental changes in a small, experimentally accessible vertebrate model. Measurements of rhythm and conduction can be considered alongside developmental cardiac phenotypes, helping researchers investigate how normal or abnormal heart function emerges. This connection supports biology studies that examine cardiovascular development and its underlying disease-related mechanisms.
The core workflow is to record cardiac voltage changes with surface electrodes and examine the resulting electrocardiogram. Researchers then evaluate waveform features and intervals in relation to heart rhythm and conduction. Because the approach is noninvasive, it can provide functional cardiac information while preserving the model for broader experimental comparisons involving genetic, environmental, or drug-related conditions.
Researchers can use the method when they need to identify abnormalities in cardiac physiology or assess how a genetic, environmental, or drug-related factor affects heart function. Its value is strongest when electrical recordings are interpreted together with observable cardiac phenotypes. This combined evidence helps connect experimental conditions to functional outcomes in cardiovascular biology.
In preclinical safety assessment, recordings can reveal drug-induced changes in cardiac rhythm or conduction before investigators interpret broader effects on heart function. Comparing electrocardiograms from treated and reference conditions provides an electrical outcome for evaluating potential cardiac effects. The method therefore complements phenotype-based observations during early assessment of compound-related cardiovascular risk.