To investigate the application of bedside ultrasound in type I mellitus diabetes patients after simultaneous pancreas-kidney transplantation (SPK), and to discuss the strategies, reference parameters, and postoperative complications of ultrasound scanning.

From July 2009 to June 2020, the hemodynamic parameters, vascular reconstruction procedures, and complications of six patients with type I mellitus diabetes were retrospectively analyzed.

Among the six patients, four developed pancreatic renal immune rejection, in which the resistance index (RI) of the internal pancreatic artery was 0.74~0.87, and peak systolic velocity (PSV) was 87~90 cm/s; the RI of the other two patients was 0.69 and 0.72, respectively. In the four patients with pancreatic renal immune rejection, complications occurred in both pancreas and kidney grafts. One patient underwent end to side anastomosis between the donor's portal vein and the recipient's external iliac vein, and the other five patients underwent end to side anastomosis between the donor's portal vein and the recipient's inferior vena cava. All the six patients underwent Y-shaped vascular anastomosis, and the renal artery of the donor kidney was the same as that of the donor kidney. The internal iliac artery was anastomosed, the abdominal aorta sleeve (including celiac trunk and superior mesenteric artery) of the donor was anastomosed with the external iliac artery of the donor, and the common iliac artery of the donor was anastomosed with the external iliac artery of the recipient end to side.

Bedside ultrasound has great clinical value in the evaluation of organ function after SPK. The reconstruction of blood vessels is the key point of scanning. The diagnostic strategies of ultrasound doctors need to be closely combined with the specific procedure of surgery.