What effect will each of the following have on heart rate?—(A) anxiety; (B) fever; (C) hypothyroidism; (D) caffeine; and (E) athletic conditioning. If a client asks why he or she has been advised to...

What effect will each of the following have on heart rate?—(A) anxiety; (B) fever; (C) hypothyroidism; (D) caffeine; and (E) athletic conditioning.

If a client asks why he or she has been advised to take an antibiotic such as penicillin before having dental work done, what information is appropriate to provide?