Final answer:
The T wave and the P wave may indicate slow recovery of Purkinje fibers.
Step-by-step explanation:
The ECG waves that may indicate slow recovery of Purkinje fibers are the T wave and the P wave.
The T wave represents the repolarization of the ventricles, and a prolonged or abnormal T wave can suggest a delay in the recovery of the Purkinje fibers.
The P wave represents the depolarization of the atria, and a prolonged or abnormal P wave can also indicate a slow recovery of the Purkinje fibers.