Cardiac Cadence - Practice & Review

Drill every rhythm the way it should be learned: caliper it, measure it, name it from memory, then check. Practice is blind (write-in first, multiple choice optional, calipers on every strip). Review shows each strip with its answer and explanation - the study key.

Free open to everyone Full access unlock for the complete set
Chapter 1 — The Heart's Electric City FreeTap the chambers and conduction structures on a real heart diagram - no multiple choice, just point to where it actually is
Find It On The Heart
Chapter 2 — ECG Basics FreePractice A: find the P/Q/R/T waves, box sizes, and rate · Practice B: caliper and enter PR / QRS / QT / rate, scored to tolerance
Practice APractice BReview
Chapter 3 — Mapping the RebelsConceptual: where rhythms originate (no strips)
Reference
Chapter 4 — Sinus Rhythms Sample freeThe seven sinus rhythms · the sample drills the first four
Free samplePracticeReview
Chapter 5 — Atrial RhythmsEAR, AT, flutter, AFib, PACs, WAP, MAT
PracticeReview
Chapter 6 — Junctional RhythmsEscape, accelerated, tachycardia, PJC, JEB
PracticeReview
Chapter 7 — Ventricular RhythmsPVC, VT, IVR, TdP, VF + the BBB mimics
PracticeReview
Chapter 8 — AV Blocks1°, Mobitz I/II, high-grade, 3°, the NCPAC trap
PracticeReview
Chapter 9 — PacemakersA / V / AV / CRT paced + failure to pace/capture/sense
PracticeReview
Chapter 10 — Reentrant SVTWPW, AVNRT, orthodromic & antidromic AVRT
PracticeReview
Chapter 11 — The Mixing ConsoleRate-dependent BBB, aberration, Ashman
PracticeReview
Chapter 12 — ArtifactsMotion, tremor, loose lead, 60 Hz
PracticeReview

Notation: an arrow (NSR → VT) means the rhythm converted and stayed; “w/” (NSR w/ VT) means it interrupted and returned to baseline. Reading without calipers is a skill you earn by drilling with them first.