Endovascular treatment of delayed arterial bleeding after pancreatic surgery: single-center experience

Experience of using stent grafts in the treatment of patients with arrosive bleeding after pancreatic surgery

Aim. To evaluate inhospital outcomes of endovascular treatment in patients who underwent endoprosthetic replacement of the culprit vessel due to arrosive bleeding after pancreatic surgery.

Material and methods. In the period 2012-2021 at the A. V. Vishnevsky National Medical Research Center of Surgery, 821 operations on the pancreas due to tumors and complicated chronic pancreatitis were performed. Seventy-five (9,1%) patients developed postoperative arrosive bleeding. Stent grafts were used to stop bleeding in 14 (18,7%) of them. There were 9 men (64,3%) and 5 women (35,7%). The median age of patients was 60 years (men — 61 years, women — 59 years). Arrosive bleeding occurred after pancreaticoduodenal resection in 13 patients, while in one case — after distal pancreatic resection. In all 14 cases, postoperative bleeding was severe and classified as grade C according to the International Study Group for Pancreatic Surgery (ISGPS) classification.

Results. There were following sources of bleeding: gastroduodenal artery — 4 (28,6%) patients, proximal hepatic arteries (right/left) — in 4 (28,6%) patients, proximal superior mesenteric artery — in 2 (14,3%), dorsal pancreatic artery — in 1 (7,1%), false aneurysm of proximal splenic artery — in 1 (7,1%), proximal common hepatic artery — in 2 (14,3%). In 10 (71,4%) patients, endoprosthetic replacement of the proximal segment of culprit artery was performed, while in 4 (28,6%) patients with arrosion of short gastroduodenal artery stump and false aneurysm, endoprosthesis replacement of the common hepatic artery was performed with a transition to the proper hepatic artery. The technical success of endovascular hemostasis (absence of contrast media extravasation) was achieved in 100% of cases. Three (21,4%) of 14 patients developed rebleeding from another arterial source. Inhospital mortality was 28,6% (n=4). The cause of deaths in 3 cases was the direct complications of endovascular hemostasis, while in one patient — progressive postoperative pancreatitis with the outcome in multiple organ failure.

Conclusion. Endovascular hemostasis using a stent graft is an effective surgical method for the treatment of arrosive bleeding after pancreatic surgery. The intervention is associated with possible complications, the risk of which must be taken into account before the procedure. We consider arrosive bleeding from a defect in the main vessel (common/ proper/right or left hepatic arteries, superior mesenteric artery) as an indication for performing endoprosthetic replacement.

Factors for early postoperative cognitive impairment in patients after coronary bypass surgery and carotid endarterectomy

Aim. To determine the relationship between perioperative factors and cognitive function in patients after coronary bypass grafting (CABG) in combination with unilateral carotid endarterectomy (CE).

Material and methods. We examined 56 men in the perioperative period with CABG combined with unilateral CE (mean age, 64,0±7,1 years). Cognitive assessment was performed before and 5-7 days after surgery with Status PF program. An advanced psychometric examination included an assessment of voluntary attention (Bourdon test), short-term memory (tests on memorizing 10 numbers, 10 words, and 10 syllables), neurodynamics (visual-motor reaction time, level of functional mobility of nervous processes, brain performance, as well as the number of errors in these tasks and missed positive signals). The concentration of neuron-specific enolase (NSE) and S100β protein in the blood serum of patients before surgery, 24 hours and 5-7 days after surgery was determined using enzyme immunoassay.

Results. In the early postoperative period, an increase in reaction time (p=0,031) was accompanied by an increase in errors in this test (p=0,042) and a decrease in the number of memorized numbers (p=0,022). Twenty four hours and 5-7 days after surgery, there were no differences between the perioperative NSE level (p1-2-3>0.05). Twenty four hours after CABG surgery, the level of S100β protein increased by 9,0% (p=0,001), while regression of S100β protein to the preoperative level was observed 5-7 days after operation.

Conclusion. A relationship was found between the CABG factor and the attention level (r=-0,518; p=0,031), functional mobility reaction time (r=0,476; p=0,041), and the number of errors (r=0,449; p=0,032). A correlation was found between the factor of neurochemical markers, the number of processed letters on the 1st minute of Bourdon test (r=-0,642; p=0,014), the total number of processed letters in Bourdon test (r=-0,617; p=0,017). The combined factor of perioperative period was associated with functional mobility reaction time (r=0,609; p=0,041), the number of processed letters at 4 min (r=-0,490; p=0,017), and the total number of processed letters in the Bourdon test (r=-0,334; p=0,006).