Objective To investigate the utilization of ultrasound monitoring the renal blood flow during extracorporeal membrane oxygenation (ECMO).Methods Twentry one cases,who received veinartery ECMO for heart failure,were examinated by bed-side ultrasound before the ECMO initiated,right after the ECMO initiated,each day after the ECMO initiated,and right after the ECMO weaned.The renal interlobar artery peak velocity (Vmax) was measured,and the renal interlobar artery resistant index (RI) was calculated,as well as the values of the serum creatinine (SCr) and blood urea nitrogen (BUN) were recorded.All the data were compared.Results Compared to the variables right after the ECMO initiated,thc Vmax incrcascd (P ＜ 0.05) two days after ECMO initiated and right after the ECMO weaned,while RI (P ＜ 0.05),SCr (P ＜ 0.05) and BUN (P ＜ 0.05) decreased,there being significant differences (P ＜ 0.05).Conclusions While treating patients with extracorporeal membrane oxygenation,the ultrasound can monitoring the renal blood flow effectively,and provide important parameters for the clinical doctors as the basis of the diagnosis and treatment.

Objective To investigate the early application value of echocardiography (UCG)after orthotopic heart transplantation (OHT). Methods A total of 29 patients were monitored by UCG early after OHT. On the 1st,7th,14th,30th day after operation,the left ventricular end-diastolic diameter (LVDd)and right ventricular end-diastolic diameter (RVDd),interventricular septal thickness (IVST),left ventricular posterior wall thickness (LVPWT)and the tricuspid regurgitation area (TRA)were measured,and the left ventricular ejection fraction (LVEF ) and left ventricle Tei index (LV-Tei ) were calculated. The blood pressures (BP),central venous pressure (CVP)of the patients were recorded simultaneously. Results The LVDd were larger on the 7th,14th and 30th day after operation,while the RVDd were smaller,compared with those on the 1st day after operation (all in P<0.05). The IVST,LVPWT were lower on the 1th,14th and 30th day after operation,compared with those on the 7th day after operation (all in P<0.05). The BP,CVP,LV-Tei were all significantly lower on the 1st,14th and 30th day after operation,compared with those on the 7th day after operation (P<0.05 ). There was no significant difference in LVEF between each time points(P>0.05 ).The tricuspid regurgitation was detected in 3-4 d after operation by UCG,and the TRA reached the peak value [(9.2 ±2.5)cm2]in 5-8 d after operation,then gradually decreased to (4.7 ±2.4)cm2 at 1 month after operation. Conclusions Early phase after OHT,the structure and function of transplanted heart can be monitored effectively by echocardiography,and it can timely provide multiple parameters as the basis of diagnosis and treatment for clinical doctors.