Which treatment option is NOT typically used for abnormal blood pressure?

Oxygen therapy is not typically employed as a treatment for abnormal blood pressure. This option is primarily used in respiratory care, particularly when patients have conditions that affect their oxygen levels, such as chronic obstructive pulmonary disease (COPD) or pneumonia. Oxygen therapy addresses issues related to oxygenation rather than directly affecting blood pressure.

In contrast, antihypertensive medications are specifically designed to lower high blood pressure through various mechanisms, such as vasodilation or reducing cardiac output. Nutritional modifications, particularly reducing sodium intake, can significantly impact blood pressure management, as high sodium levels can contribute to hypertension. Cognitive behavioral therapy may also help individuals manage stress or anxiety, which can indirectly influence blood pressure control, particularly in patients whose blood pressure is affected by psychological factors.

Thus, among the options presented, oxygen therapy stands out as unrelated to the goal of managing blood pressure abnormalities.