A patient with A-Fib would exhibit which EKG pattern?

Atrial fibrillation (A-Fib) is characterized on an electrocardiogram (EKG) by an absence of distinct P waves and an irregularly irregular ventricular response. The hallmark of this rhythm disturbance is the chaotic electrical activity in the atria, leading to a rapid and uncoordinated contraction. Instead of the normal pattern where each P wave corresponds to a QRS complex, A-Fib shows a wavy baseline without these identifiable P waves, and the intervals between the QRS complexes vary in duration.

Normal sinus rhythm would display a consistent rhythm with P waves preceding each QRS complex and evenly spaced intervals, which would not be present in a patient with A-Fib. A chest tube and lumbar puncture are procedures unrelated to EKG readings and do not indicate any specific cardiac rhythm. Therefore, the correct identification of the EKG pattern in a patient with A-Fib is indeed atrial fibrillation.