The nurse is interpreting an ECG strip. What would describe paroxysmal supraventricular tachycardia (PSVT)? Note: Credit will be given only if all correct choices and no incorrect choices are selected. Select all that apply
1. QRS width is 0.18 second.
2. Heart rate is between 150 and 250 beats per minute.
3. The P wave is hidden in the preceding T wave; therefore, the PR interval cannot be measured.
4. The increased rate can start abruptly and cease quickly when viewing a cardiac monitor to validate its presence.
5. It is treated with carotid massage.
2,3,4
Rationale 1: The QRS width should be less than 0.12 second.
Rationale 2: A heart rate between 150 and 250 beats per minute is used to describe paroxysmal supraventricular tachycardia.
Rationale 3: A P wave hidden in the preceding T wave preventing correct measurement of the PR interval describes paroxysmal supraventricular tachycardia.
Rationale 4: Paroxysmal supraventricular tachycardia is an increased rate that can start abruptly and cease quickly when viewing a cardiac monitor.
Rationale 5: Paroxysmal supraventricular tachycardia has an abrupt beginning and ending and is witnessed by the use of cardiac monitoring. There is no specific treatment for this dysrhythmia.
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