Biomedical subjects

Witold Dinstak

Publications and source records attributed to Witold Dinstak.

3 recordsLinked to original sources

PubMed2005

Modified versus standard mechanical valved aortic conduit.

The aim of this study was to compare the hemodynamic characteristics and early clinical results of a commercially available standard aortic conduit with those of a modified valved composite graft, which consists of a mechanical valve prosthesis sewn into a vascular tube and placed in a supraannular position. The modified conduit was placed in 40 patients (group 1) and the standard conduit in another 40 patients (group 2). The early postoperative mortality rates (within 30 days after surgery) were 0% in group 1 and 5% (2 patients) in group 2; the difference was not statistically significant. The mean geometric orifice area of the valve prosthesis was significantly larger in group 1 than in group 2 (3.7 +/- 0.7 cm(2) versus 2.9 +/- 0.5 cm(2)). Early results showed a hemodynamic advantage of the modified conduit, with significantly lower transvalvular gradients.

Adult↗

PubMed2002

[False aneurysms after button-Bentall procedure].

Between January 1995 and December 2000, 222 consecutive patients underwent complete aortic root replacement in the Department of Cardiovascular Surgery of the Hertz- und Gefaess- Klinik- Bad Neustadt (Germany). At the exception of 2 cases, all patients received the modified Bentallde Bono procedure with total excision of the ascending aorta and direct reimplantation of the coronary ostia using button technique. During the follow-up period of up to 6 years in 3 patients, a periprosthetic aneurysm was diagnosed. In two patients with clinical symptoms and a fistula between the prosthetic lumen and the spurium aneurysm, a reoperation was performed. Due to the complete absence of clinical symptoms or a fistula connecting the prosthesis and the aneurysm or progress in size of the aneurysm during the follow-up period the third patient was treated conservatively. The choice of proper treatment of this complication is difficult and should be based on continuous investigation of clinical symptoms and various technical examinations.

Aneurysm, False↗

PubMed2002

[Complete obliteration of false lumen in thoracic aorta after surgical treatment of acute type De Bakey I aortic dissection--a case report].

A case of a 62 year old male with acute type De Bakey I aortic dissection is presented. The ascending aorta, aortic valve and total aortic arch replacement were performed. Additionally the proximal descending aorta was replaced using elephant trunk technique, to close the entrance of the dissection. There was no patent false lumen in distal descending aorta in postoperative findings.

Acute Disease↗