A nurse is providing preoperative teaching to an older adult female client who is scheduled for a laminectomy and uses supplements. Which of the following supplements should the nurse identify as increasing the client's risk for hypotension during surgery?

A. Rubeola (measles). Rubeola is transmitted through airborne particles and requires airborne precautions, including the use of an N95 respirator and placement in a negative pressure room. Droplet precautions would not provide sufficient protection due to the small particle size and long-range transmission.
B. Varicella (chickenpox). Varicella requires both airborne and contact precautions because it spreads via airborne respiratory droplets and direct contact with lesions. A client with varicella must be isolated in a negative pressure room and healthcare workers should use full PPE.
C. Tuberculosis. Tuberculosis is caused by Mycobacterium tuberculosis and is spread through airborne droplet nuclei, which remain suspended in the air for extended periods. It requires airborne precautions, including an N95 respirator and isolation in a specialized room.
D. Pertussis (whooping cough). Pertussis is a highly contagious bacterial infection that spreads through large respiratory droplets during coughing or sneezing. Droplet precautions are required, which include wearing a surgical mask when within 3 feet of the client and practicing proper hand hygiene to prevent transmission.

A. Soy. While soy can have mild estrogen-like effects and may influence thyroid function or interact with certain medications, it is not typically associated with hypotension or increased surgical bleeding risk.
B. Black cohosh. Black cohosh is often used to manage menopausal symptoms but is known to cause vasodilation and hypotension in some individuals. Its use can increase the risk of low blood pressure during anesthesia and surgery.
C. Flaxseed. Flaxseed is commonly used for digestive health and cardiovascular support. It may have mild blood pressure–lowering effects but is not strongly linked to significant hypotension during surgery.
D. Probiotics. Probiotics support gut flora and immunity but do not affect blood pressure significantly. They are not associated with intraoperative complications like hypotension.