Final answer:
Investigate the cause of occasional dizziness in a 60-year-old female pre-operatively by taking a detailed history and examination, with further diagnostic tests and specialist referrals if indicated.
Step-by-step explanation:
The most appropriate management of occasional dizziness after swimming in a 60-year-old female pre-operatively is to investigate the cause of the dizziness further. This includes a careful history and physical examination focusing on cardiovascular, neurologic, and vestibular systems. Investigating the dizziness is important because it could represent an underlying condition that may increase the risk of surgery or anesthesia. The management may include ordering further diagnostic tests, such as blood work, ECG, or a referral to a specialist if indicated. It is not appropriate to ignore symptoms that may have implications for patient safety during surgery.