Since the sympathetic nervous system is responsible for increasing the rate with which the heart beats, by blocking the action of these nerves metoprolol reduces the heart rate and is useful in treating abnormally rapid heart rhythms. Medically Reviewed by a Doctor on 12/3/2014.
Other Symptoms. Other symptoms of a sinus infection include fever; headache, persistent cough; ear pain, pressure, or fullness; eyes may be red, bulging, or painful; and fatigue.
What causes sinusitis and how is it treated? Infection of the sinus cavities often occurs due to inflammation and obstruction of the sinus drainage pathways. Typical symptoms of a sinus infection include facial pain and pressure, nasal obstruction, yellow or green nasal drainage, fatigue and fever.