The nurse is performing hemodialysis on a client, with the understanding that air embolus is a complication of this treatment. Which assessment findings by the nurse indicate an air embolus?

Number 2 is correct.

Signs of air embolus include chest pain, anxiety, changes in sensorium, and decreased oxygen saturation. Cold intolerance is not an indication of air embolus. Tachypnea, dyspnea, and hypotension are other findings.