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Normal sinus rhythm
In this video (scrub through the video to see chapters)
- 00:09 Normal sinus rhythm
- 01:03 Conduction through the heart during normal sinus rhythm
- 08:21 Think of heart rhythm as a relay race
- 10:50 Gap junctions: How cardiac cells communicate electrically
- 11:05 Systematic approach to interpreting the ECG
- 12:24 Five criteria for normal sinus rhythm
- 21:06 Two common misconceptions
- 22:12 References
Measuring intervals and voltage
In this video (scrub through the video to see chapters)
- 00:12 Measuring intervals and voltages
- 00:32 Standard ECG Calibration
- 02:55 RR Interval
- 05:24 PR Interval
- 06:17 QRS Duration
- 10:08 QT Interval
- 13:48 Now let’s measure some voltages!
Measuring axis
In this video (scrub through the video to see chapters)
- 0:50 The “vector” for the heart’s activity
- 03:24 The chest (precordial) leads
- 04:18 The vectors for the frontal plane leads
- 10:10 Determining axis: Method 1 (more precise)
- 12:38 Measuring axis: Method 2 (less precise)
- 15:18 P Wave axis
- 19:39 QRS axis
Hypertrophy
In this video (scrub through the video to see chapters)
- 00:09 Hypertrophy
- 01:49 Radiographic, echocardiographic, and pathological correlates
- 06:02 Atrial enlargement
- 12:36 Right ventricular hypertrophy
- 16:13 Left ventricular hypertrophy
- 22:28 Biventricular hypertrophy
Bundle branch block
In this video (scrub through the video to see chapters)
- 00:09 Bundle branch block
- 02:34 ECG diagnosis of bundle branch block
- 03:24 Ventricular depolarization in LBBB
- 06:43 Ventricular depolarization in RBBB
- 11:09 Causes of RBBB
- 13:00 Example of LBBB
- 15:14 Causes of LBBB
- 16:15 WiLLiaM MoRRoW
- 17:45 Left anterior hemiblock
- 19:28 Left posterior hemiblock