Which of the following are rules for atrial fibrillation? Select all that apply
Rhythm: Irregularly irregular
P waves: No identifiable P waves
PR interval: Measurable
Heart rate: Atrial rate not measurable
QRS interval: <0.10 seconds
Correct Answer : A,B,D
A. Irregularly irregular: Atrial fibrillation is characterized by an irregularly irregular rhythm.
B. No identifiable P waves: P waves are typically absent in atrial fibrillation or may be difficult to identify.
C. PR interval is not typically measured in atrial fibrillation as it is not relevant to the rhythm.
D. Atrial rate not measurable: The atrial rate in atrial fibrillation is not measurable due to the rapid and irregular nature of the rhythm.
E. QRS interval is typically normal in atrial fibrillation and does not exceed 0.10 seconds.
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Related Questions
Correct Answer is B
Explanation
A. Atrial fibrillation is characterized by rapid, irregular electrical impulses originating from the atria, resulting in a quivering or fibrillating motion of the atria rather than a coordinated contraction.
B. Asystole is the absence of any electrical activity on the cardiac monitor, resulting in a flat line. It indicates the absence of ventricular contraction and is considered a medical emergency requiring immediate intervention (CPR and advanced cardiac life support).
C. Ventricular fibrillation is characterized by chaotic, disorganized electrical activity in the ventricles, resulting in ineffective quivering of the ventricles and loss of cardiac output.
D. Atrial flutter is characterized by rapid but regular electrical impulses originating from the atria, resulting in a sawtooth pattern on the ECG tracing.
Correct Answer is B
Explanation
A. While assessment and data collection are important, the priority in the presence of a life-threatening arrhythmia is to initiate immediate interventions to address the situation.
B. The nurse should immediately inform the healthcare provider about the life- threatening arrhythmia to obtain further guidance and potential orders for intervention.
C. Vital signs are important, but they should not delay immediate action when a life- threatening arrhythmia is present.
D. Administering antiarrhythmic medication may be necessary, but the nurse should first notify the healthcare provider to obtain orders and guidance before administering any medications.
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