Practice Quizzes
Real, cardiologist-reviewed ECGs, with the case history where the report gave one.
Beginner Quizzes
6 quizzesIs the Rhythm Normal?
Learn to quickly judge whether a dog or cat ECG rhythm is normal, a benign normal variant, or truly abnormal, using the rhythm patterns most often seen in general practice.
Fast or Slow?
Practice rapid rate triage on canine and feline ECGs, learning to recognize normal rates and identify the rhythms that make the heart go too fast or too slow.
Regular or Irregular?
Learn to read rhythm regularity as the first step of ECG interpretation, then see how that single observation narrows the differential before adding rate, P-wave, and conduction clues.
Normal Variant or Disease?
Learn to tell a normal or benign variant from a finding that needs a closer look, using the rhythms most often seen in general practice.
Spot the Abnormal Beat
Learn to spot a single abnormal beat against an otherwise normal rhythm, and tell true ectopy apart from normal variation, artifact, and sustained arrhythmias like atrial fibrillation.
Common Arrhythmias
Learn to read the underlying rhythm first, then spot and classify the premature beats and irregularities that make up the most common canine and feline arrhythmias.
Intermediate Quizzes
5 quizzesPremature Beats
Learn to spot premature beats on an ECG, distinguish atrial from ventricular ectopy, recognize repeating patterns such as couplets and bigeminy, and assess ectopic burden using ECG findings.
AV Blocks
Learn to recognize and classify first-, second-, and third-degree AV block by systematically evaluating the P-QRS relationship, and to distinguish true conduction disease from common mimics such as sinus arrhythmia and blocked atrial premature complexes.
Atrial Arrhythmias
Learn to recognize and classify atrial arrhythmias in dogs and cats by evaluating P-wave morphology, atrial organization, and AV conduction before interpreting the ventricular response.
Ventricular Arrhythmias
Build a systematic approach to ventricular arrhythmias: spot the abnormal beat, confirm its ventricular origin, classify the pattern from isolated VPCs to ventricular tachycardia, and judge its clinical significance.
Clinical Decision Making
Move beyond naming rhythms to decide what each ECG finding means for the patient in front of you and what should happen next - reassure, monitor, investigate, or intervene.
Advanced Quizzes
4 quizzesRhythm Interpretation
An advanced rhythm-interpretation challenge that moves from recognizing ectopy and named arrhythmias to separating look-alike rhythms and deciding what each one means for the patient.
Mixed Arrhythmia Cases
Ten complex tracings in which more than one rhythm disturbance is present at once - your job is to name the primary arrhythmia, judge what the secondary findings add, and decide what happens next.
Subtle ECG Findings
Sharpen your eye for the ECG abnormalities that hide in plain sight - subtle ectopy, dropped beats, wide-QRS mimics, and timing changes that are easy to miss but clinically critical.
Cardiologist Challenge Cases
Ten cardiologist-level cases where the diagnosis depends on weighing competing ECG findings - identify the decisive clue, avoid common interpretation traps, and determine what the finding means for patient management.