From our study we abstract that, thoracic electrical bioimpedance can be used intraoperatively during anaesthesia in some peripheral surgical operations to assess the cardiac parameters and performance. Also, during comparison between the effect of isoflurane as inhalational agent and propofol as intravenous nonvolatile agent on the cardiac functions. We observed that, both agents nearly decrease the cardiac output and ejection fraction from the preoperative state in the same patient through crossing-over both drugs on every candidate of the 30 cases we have applied these drugs upon them. Although, both drugs can decrease the cardiac functions and performance from the normal preoperative state, yet propofol nearly can preserve the cardiac output and ejection fraction at a higher level than isoflurane.