Final answer:
This patient is at increased risk for Rheumatic heart disease due to the recurrent episodes of tonsillitis and the presence of unilateral purulent drainage.
Step-by-step explanation:
This patient is at increased risk for Rheumatic heart disease due to the recurrent episodes of tonsillitis and the presence of unilateral purulent drainage. Rheumatic fever is a complication of untreated or inadequately treated streptococcal pharyngitis, and recurrent pharyngitis can increase the risk of recurring attacks of rheumatic fever.