Pericarditis/cardiac tamponade -Symptoms — sharp, constant sternal pain relieved by sitting forward. Pain may radiate to the left shoulder and/or left arm into the abdomen, and is worse when lying on the left side and on inspiration, swallowing, and coughing. Other symptoms may include fever, cough, and arthralgia. A cardiac tamponade may have associated breathlessness, dysphagia, cough, and hoarseness.Signs — pericardial friction rub (high pitched scratching sound, best heard over the left sternal border during expiration). Signs of a cardiac tamponade include pulsus paradoxus (decrease in palpable pulse and arterial systolic blood pressure of 10 mmHg on inspiration); and hypotension, muffled heart sounds, and jugular venous distention (Beck's Triad).