Question

Based on the provided ECG description (Atrial Fibrillation with Wandering Atrial Pacemaker), which of the following statements is correct?

A) The P wave is variable, and there is no QRS complex following each P wave, resulting in an irregular rhythm.

B) The P wave is absent, leading to a regular QRS pattern.

C) The PR interval is constant, indicating a normal atrioventricular conduction.

D) The heart rate is significantly elevated, causing a wide complex QRS pattern.

Answer 1

The correct answer is A) The P wave is variable, and there is no QRS complex following each P wave, resulting in an irregular rhythm, which is typical in atrial fibrillation with increased frequency between QRS complexes and variable or absent P waves.

Step-by-step explanation:

When analyzing an ECG description of Atrial Fibrillation with Wandering Atrial Pacemaker, it is important to consider the characteristics of the P waves and the QRS complexes. Based on the provided descriptions and typical features of atrial fibrillation, the correct statement is A) The P wave is variable, and there is no QRS complex following each P wave, resulting in an irregular rhythm. In atrial fibrillation, the electrical pattern is abnormal prior to the QRS complex and the frequency between the QRS complexes has increased, which makes the rhythm irregular. The P wave in atrial fibrillation is often absent or varies due to the disorganized electrical activity in the atria and the fact that not every atrial impulse is conducted through the AV node to result in a QRS complex.