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This report is concerned with a short review of 3 reported cases in which rare successive complications occurred in various lapses of time after vascular reconstructive operations. In one, 38 year old man, in a 12 year period after primary endarterectomy of aortic bifurcation and common iliac arteries the following complications occurred consecutively: an aneurysmal formation in the iliac artery with urethero-aneurysmal fistula and severe bleeding from the urinary tract, entero-prosthetic fistula with severe gastro-intestinal bleeding, occlusion of the left iliac artery with severe left leg ischaemia. They were surgically corrected each time with a satisfactory result. In another, a 25 year old man, a traumatic lesion of the iliac artery with false aneurysmal formation took place. After an emergency excision of the aneurysm with graft replacement, early bleeding occurred from the operative wound. It was treated conservatively, which resulted in infection of the graft and crawling sepsis which lasted 6 months. Urethero-prosthetic fistula and occlusion of the femoral artery occurred. It was corrected surgically with a satisfactory result. The last case concerned a 53 year old man with atherosclerotic occlusion of the abdominal aorta, external iliac and femoral arteries. An aorto-bilateral femoral bypass graft was instituted in him. In 10 days, complete gangrene of the sigmoid colon with perforation occurred. Sigmoidectomy with colostomy were performed. After that, further complications developed: (1) massive venous thrombosis of the left leg and (2) progressive left buttock necrosis. The last complication resulted in septicemia and death of this patient after 3 months of treatment.

Experimental and clinical results of the application of Dallon prostheses in vascular surgery are presented. Dallon prostheses are produced in the Medical Materials Department of the Research Development Centre of the Knitting Industry in łódź. They are contained in disposable radially sterilized wrappings. The experiments were performed on 17 mongrel dogs and the process of healing in was observed after three and six months. The process was similar to the healing in of other porous, synthetic prostheses. In 37 patients operated because of the artheromasia bypasses or vascular flaps of Dallon prostheses were implanted. The results of experimental and clinical research proved that the radially sterilized Dallon prostheses have similar properties like the prostheses produced be well known foreign firms, and are very useful in arterial reconstruction.

The method based on the Time Interval Histogram analysis of the Doppler signal was applied for localisation of arterial diseases and the precision of the reconstructive operation. The preliminary investigations were carried out on the abdominal aorta of a dog. After that 87 patients were examined. The examination confirmed the usefulness of the method.