Which antitussive has a combination of antihistamine and antitussive properties? 2 Points Guaifenesin (Robitussin) Codeine Diphenhydramine (Diphen) Dextromethorphan (Robitussin)When administering guaifenesin (Robitussin) to a patient with bronchitis, the nurse expects that the drug will have what effect? 2 Points Increase the frequency of a nonproductive cough Increase the viscosity of mucus secretions Thin the bronchial secretions Dilate the bronchioles
