Final answer:
The primary treatments for infective endocarditis are antibiotic therapy and possibly surgical intervention to manage complications. Lifestyle modifications can support recovery, but are not a substitute for medical treatment.
Step-by-step explanation:
For a client with a history of infective endocarditis, the appropriate treatment options would be 1) Antibiotic therapy and potentially 2) Surgical intervention. Antibiotic treatment is essential and should be high-dosed and intravenous, based on antimicrobial susceptibility testing. It usually involves a combination of antibiotics to cover the most likely pathogens, such as Staphylococcus spp. and Streptococcus spp. In cases of prosthetic-valve endocarditis, a regimen may include vancomycin, rifampin, and gentamicin due to the need to penetrate biofilms. Surgery may become necessary if there is significant valve damage or complications from the infection. Additionally, the American Heart Association advises prophylactic antibiotic treatment to prevent recurrence, especially in high-risk patients.
Lifestyle modifications might be recommended alongside medical treatment to support overall heart health, but they are not a stand-alone treatment for infective endocarditis. Ongoing medical supervision is crucial, and a 'No treatment' approach is not appropriate due to the serious nature of the disease. The final answer to the original question is Antibiotic therapy and, if necessary, Surgical intervention.