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nwscc ecg QRS
QRS intervals
| Question | Answer |
|---|---|
| Sinus Rhythm QRS | 1) 0.10 sec or less unless abnormally conducted. |
| Sinus Bradycardia QRS | 2) 0.10 sec or less unless abnormally conducted. |
| Sinus Tachycardia QRS | 3) 0.10 sec or less unless abnormally conducted. |
| Sinus Arrhythmia QRS | 4) 0.10 sec or less unless abnormally conducted. |
| SA Block QRS | 5) 0.10 sec or less unless abnormally conducted. |
| Sinus Arrest QRS | 6) 0.10 sec or less unless abnormally conducted. |
| PAC'S QRS | 7) 0.10 sec or less unless abnormally conducted. |
| Wandering Atrial Pacemaker QRS | 8) 0.10 sec or less unless abnormally conducted. |
| Atrial Flutter QRS | 9) 0.10 sec or less unless abnormally conducted. |
| Atrial Fibrillation QRS | 10) 0.10 sec or less unless abnormally conducted. |
| WPW WOLF- PARKINSON-WHITE QRS | usually greater than 0.12 sec. Delta wave may be seen in one or more leads |
| PJC's QRS | 1) Usually 0.10 sec or less unless it is aberrantly conducted or an intraventricular conduction delay exist |
| Junctional Escape Beat QRS | 2) Usually 0.10 sec or less unless it is aberrantly conducted or an intraventricular conduction delay exist |
| Junctional Escape Rhythm QRS | 3) Usually 0.10 sec or less unless it is aberrantly conducted or an intraventricular conduction delay exist |
| Accelerated Junctional Rhythm QRS | 4) Usually 0.10 sec or less unless it is aberrantly conducted or an intraventricular conduction delay exist |
| Junctional Tachycardia QRS | 5) Usually 0.10 sec or less unless it is aberrantly conducted or an intraventricular conduction delay exist |
| PVC'S QRS | 1) 0.12 sec or greater |
| Ventricular Escape Beat QRS | 2) 0.12 sec or greater |
| Idioventricular Rhythm QRS | 3) 0.12 sec or greater |
| Accelerated Idioventricular Rhythm | 4) 0.12 sec or greater |
| Monoporphic Ventricular Tachycardia QRS | 5) 0.12 sec or greater |
| Polymorphic Ventricular Tachycardia QRS | 6) 0.12 sec or greater |
| Ventricular Fibrillation QRS | not discernible |
| Asystole | Absent |
| First Degree Block QRS | Usually 0.10 sec or less unless intraventricular conduction delay exist @ |
| Second Degree Block Type I QRS | Usually 0.10 sec or less unless intraventricular conduction delay exist % |
| Second Degree Block Type II QRS | Usually Greater than 0.10 sec, Periodically absent after p-waves |
| Second Degree Block 2:1 Conduction QRS | Within normal limits if block is above bundle of his.(probably type I) wide if block is below bundle of his (probably type II) absent after every other p-wave |
| Third Degree Block (Complete Block) QRS | narrow or wide depending on location of escape pacemaker and condition of intraventricular conduction system |
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