Page 52 - AACN Essentials of Critical-Care Nursing Pocket Handbook, Second Edition
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                     Treat underlying cause.
                  Treatment





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               Cardiac Rhythms, ECG Characteristics, and Treatment Guide (continued)
                  ECG Characteristics PR interval: Usually normal (0.12-0.20 second); may be difficult to measure if P waves Conduction: Normal through atria, AV node, bundle branches, and ventricles.








                     Rate:  100 beats/min.  Rhythm: Regular. P waves: Precede every QRS; consistent shape.  are buried in T waves. QRS complex: Usually normal (0.04-0.10 second).







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                  Rhythm  Sinus tachycardia

               3.12
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