Contemporary Examples. 1  Biden is such a straight shooter that pundits say he needs a muzzle. 2  Suddenly, the darkness came alive with muzzle flashes and tracer rounds. 3  The result of the back-and-forth was guaranteed national publicity for the very ideas the politicians wanted to muzzle.
Early symptoms of fluid around the heart include feeling out of breath, even when lying down. Breathing often becomes easier when you sit up or lean forward. Other signs include feeling lightheaded or dizzy, chest pain that is sharp and stabbing, chest tightness and a dry, chronic cough.
According to MayoClinic.com, infections with bacteria, viruses or fungi can cause pericardial effusions, or fluid around the heart. Any person is susceptible to an infection leading to this condition, but cancer patients are at an increased risk because they often have a weakened immune system.