OBJECTIVES To validate ascending aorta-lower abdominal aorta bypass grafting treatment for patients with descending aortic coarctation and an aortic valve disease. METHODS The three patients in whom a descending atypical aortic coarctation was associated with an aortic valve disease were treated with one stage surgical treatment with aortic bypass grafting through the diaphragm and aortic val...

Introduction. Abdominal aorta aneurysm is a recognized cause of death for the European population. The identification of intra-operative risk factors for perioperative death is of crucial importance for the society. Material and methods. A prospective observational study was conducted in the Vascular Surgery Department of the Pomeranian Medical University in Szczecin, Poland. The study group co...

Introduction. “The nutcracker syndrome” occurs due to abnormal compression of the left renal vein (LRV) between superior mesenteric artery and aorta. Clinical manifestations range from hematuria, proteinuria, pain in lumbar region, sided varicocele men, pudendal varicosity women development severe anemia failure some cases progressive phlebohypertension.Materials methods. The study included 210...

The objective of this study was to develop a pre-clinical large animal model for the in vivo hemodynamic testing of prosthetic valves in the aortic position without the need for cardiopulmonary bypass. Ten male pigs were used. A composite valved conduit was constructed in the operating room by implanting a prosthetic valve between two separate pieces of vascular conduits, which bypassed the asc...

De-airing of the heart in open heart surgery is a necessary routine. Most of the air is evacuated from the heart before the aortic cross clamp is removed, but the de-airing may be continued even after declamping. One way to continue de-airing is to partially clamp the ascending aorta, proximally to the aortic cannula, in order to create a pocket for trapping residual air coming from the left ve...

BACKGROUND The deep hypothermic circulatory arrest (DHCA) technique has been used in aortic arch and isthmus hypoplasia for many years. However, with the demonstration of the deleterious effects of prolonged DHCA, selective cerebral perfusion (SCP) has started to be used in aortic arch repair. For SCP, perfusion via the innominate artery route is generally preferred (either direct innominate ar...

The contraction/relaxation responses of thoracic aortal rings clamped with two clamping pressures to potassium chloride (KC1), noradrenaline and carbachol were studied using a scanning electron microscope (SEM) to ascertain endothelial lacerations. Clamp A had the tip pressure PA = 0.60 N/mm2 and clamp B PB = 5.16 N/mm2. In 15 Wistar albino rats, weighing 328 +/- 19 g (mean +/- SD), the thoraci...

dissection of the sinus of valsalva is a rare and life-threatening event. it often occurs during percutaneous coronary intervention in the right coronary artery (rca). dissection flap usually involves the rca and the right sinus of valsalva. here we report two extremely rare cases of spontaneous dissection limited to the non-coronary sinus of valsalva, causing severe aortic valve regurgitation:...

BACKGROUND Aortic valve surgery in patients with severely calcified aortas is technically challenging. Additionally, the choice of arterial cannulation site and whether to perform an aortic clamp to prevent neurological complications are poorly defined. CASE PRESENTATION We describe a patient with a severely calcified aorta and stenosis of its side branches. He successfully underwent aortic v...

ion channels are responsible for control of cell function in excitable tissues such as heart and brain and also in organs and tissues traditionally thought to be non- excitable including liver and epithelium. in the present research, the effect of lead (pb2+) on ca2+ -dependent action potential and currents was studied in f77 neuronal soma membrane of helix aspersa. for this purpose, action pot...