RESUMO
Objective To evaluate the effect of obstructive jaundice on the accuracy of left ventricular end-diastolic volume (LVEDV) and stroke volume variability (SVV) in monitoring fluid responsiveness.Methods Thirty patients of both sexes,aged 45-60 yr,weighing 55-70 kg,of American Society of Anesthesiologists physical status Ⅰ or Ⅱ,with New York Heart Association Ⅰ,scheduled for elective pancreatoduodenectomy,were divided into 2 groups according to the serum total bilirubin levels:A group (serum total bilirubin ≥ 17 μmmol/L,n =16) and B group (serum total bilirubin＜ 17 μmmol/L,n =14).Six percent hydroxyethyl starch 500 ml was infused over 40 min after anesthesia induction.The parameters of VigileoTM such as cardiac output (CO),SVV,systemic vascular resistance (SVR) and pulmonary capillary wedge pressure and indices measured by transesophageal three-dimensional echocardiography such as LVEDV,left ventricular end-systolic volume,CO',left ventricular ejection fraction (LVEF) and ratio of mitral peak velocity of early filling (E) to early diastolic mitral annular velocity (e',E/e'ratio) were recorded before and after fluid loading.Results Compared with that before fluid loading,SVV was significantly decreased in two groups,and CO,LVEDV,CO'and LVEF were significantly increased in group B,and E/e'ratio was significantly increased in group A (P＜0.05).Compared with group B,CO,SVR,CO'and LVEF were significantly decreased,and pulmonary capillary wedge pressure was increased in group A (P＜0.05).Conclusion Obstructive jaundice causes decrease in the accuracy of LVEDV in monitoring fluid responsiveness and no effect on SVV.