Hemodynamic changes and their management during hepatic resection

Aim of the study: select optimal methods for patient’s monitoring du¬ring hepatic resection after evaluation the character, causes and rate of hemodynamic changes. Main goals: to compare the value of non-invasive impedance cardiography for moni¬toring of cardiac output to invasive intermittent thermodilution method in patients undergoing hepatic resection, to determine mostly changing hemodynamic parameters during the hepatic surgery, to determine the causes of hemodynamic changes, to determine hemodynamic factors, influencing increase in blood loss during the surgery. Conclusions: non-invasive ICG method may be used to monitor cardiac output during the hepatic resection surgery, most common hemodynamic changes during hepatic resection surgery include the reduction in mean arterial blood pressure (hypotension), decreased cardiac index, and elevated pressure in the inferior vena cava, more common cause of hypotension is clamping of the inferior vena cava, which is caused by surgical manipulations; less common – blood loss. Cause of hypotension during hepatic resection surgery may be determined by pressure monitoring in the superior and inferior vena cava, blood loss is related to the number of clamping of the inferior vena cava and increasing pressure in the superior vena cava. Practical recommendations: in order to reduce the number of hemodynamic changes during the surgery, it is essential to monitor arterial blood pressure, cardiac output and pressures in the superior and inferior vena cava, maintenance of low central venous pressure and reduction of num¬ber of inferior vena cava clamping, cooperating with the team of surgeons, should be included in the anesthesia and surgery plan, ICG method may be used to monitor central hemodynamic parame-ters during hepatic resection surgery