- Basics of ECG Interpretation11 Topics
- Normal ECG Parameters
- ECG Interpretation of Chamber Enlargement4 Topics
- Dysrhythmias
- Bradycardia
- Heart Block3 Topics
- Sick Sinus Syndrome
- Tachycardia8 Topics
- Hyperkalemia
- Myocardial Hypoxia/Ischemia
- Low Amplitude QRS Complex
- Wide QRS Complex
- Bundle Branch Block
- Differentials for ECG Abnormalities
Lesson 2 of 14
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Normal ECG Parameters
| Parameter | Canine | Feline |
| Heart Rate (beats per minute) | Adults: 70-160 Toy Breeds: up to 180 Puppies: up to 220 | 160-240 |
| Rhythm | Normal Sinus Rhythm Sinus Arrhythmia Wandering Atrial Pacemaker | Normal Sinus Rhythm Sinus Arrhythmia |
| Interval (seconds) | ||
| P | <0.04 | <0.04 |
| PR | 0.06 to 0.13 | 0.05 to 0.09 |
| QRS | <20kg: <0.05 >20 kg: <0.06 Giant breeds: <0.065 | <0.04 |
| QT | 0.15 to 0.25 | 0.12 to 0.18 |
| Amplitude (mV) in Lead II | ||
| P | <0.4 | <0.2 |
| R | <20kg: <2.5 >20kg: <3.0 | <0.9 |
| MEA | +40° to +100° | -5° to +160° |
