What best describes the ECG rhythm of atrial fibrillation?
◦ No consistent P waves, only an erratic and wavy baseline between normally configured QRS waves
◦ No P wave but waves that can be described similar to a picket fence or sawtooth pattern that are regularly spaced between normal QRS waves
◦ A progressive deterioration of the wavy baseline with irregular R to R spacing that leads to ventricular tachycardia and a cardiac arrest situation
◦ A QRS width greater than 0.12 second and lasting about 30 seconds before ventricular fibrillation occurs