You should be MOST suspicious that your patient has experienced a cardiac tamponade if he or she presents with:

a) Beck's triad: hypotension, distant heart sounds, and jugular venous distention
b) Sudden onset of severe chest pain radiating to the back and left arm
c) Pallor, diaphoresis, and a rapid, irregular pulse
d) Hemoptysis, dyspnea, and pleuritic chest pain