Which disease is least likely to affect the sensory system?

A home care nurse visits a client with chronic obstructive pulmonary disease who requires oxygen. Which statement by the client indicates the need for additional teaching about home oxygen use?

a) "I lubricate my lips and nose with K-Y jelly." b) "I make sure my oxygen mask is on tightly so it won't fall off while I nap." c) "I have a 'no smoking' sign posted at my front entry-way to remind guests not to smoke." d) "I clean my mask with water after every meal."

Which of the following adverse side effects is commonly seen with St. John's wort?

a. toothache b. bleeding c. xerostomia d. kidney disease