The signs and symptoms of air embolism include chest pain, dyspnea, hypoxia, anxiety, tachycardia, and hypotension. The nurse also may hear a loud churning sound over the pericardium on auscultation of the client's chest. The signs and symptoms of sepsis include fever, chills, and general malaise. Fluid overload causes increased intravascular volume, which increases the blood pressure and the pulse rate as the heart tries to pump the extra fluid volume. Fluid overload also causes neck vein distention and shifting of fluid into the alveoli, resulting in lung crackles. The signs and symptoms of a fluid imbalance depend on the type of imbalance the client is experiencing.