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O Bayezid

Publications and source records attributed to O Bayezid.

11 recordsLinked to original sources
PubMed2005

Minimally invasive saphenous vein harvesting using a laryngoscope: procedural, functional, and morphologic evaluation.

BACKGROUND: Because commercial minimally invasive harvesting equipments significantly increase operation costs, they are not always available in all clinics worldwide. The aim of this study was to investigate whether minimally invasive saphenous vein harvesting using a laryngoscope can be applied efficiently and successfully. METHODS: Thirty patients were prospectively randomized into two groups. One group underwent a minimally invasive technique using a laryngoscope; the other, open saphenous vein harvest. A modified bridging technique, in which tissue retraction and illumination is achieved with a sterilized laryngoscope, was used for minimally invasive harvesting. Smooth muscle contractile and endothelial functions were tested in vitro using an organ chamber. Morphology was examined with light microscopy. RESULTS: There was no statistically significant difference in harvest times or length of the vein harvested by either of the above mentioned techniques. Total length of the incision in the minimally invasive group was significantly shorter than that in the open group. In follow-ups, no significant complications occurred in either group. Pain and leg edema were significantly less in the minimally invasive group compared to those of the open group. There was no significant difference in response to acetylcholine and 80 mM KCl between veins taken with the laryngoscope compared to veins taken with the traditional open technique. Similarly, histological data was unable to show any significant damage to the vessel wall. CONCLUSIONS: Because the laryngoscopic saphenectomy does not harm the harvested graft, it can be applied, instead of other minimally invasive saphenous vein harvesting systems, with a zero cost, efficiently, successfully, and with satisfactory speed and significant reduction of postoperative leg pain and wound complications.

Aged↗
PubMed2004

Effect of chronic Pseudomonas aeruginosa infection on the development of atherosclerosis in a rat model.

In order to investigate the possible relationship between atherosclerosis and chronic Pseudomonas aeruginosa infection, 66 Wistar rats were given five separate intratracheal inoculations of either P. aeruginosa or sterile saline at 4-week intervals. The rats were divided into four groups: group 1 was infected with P. aeruginosa and fed a diet containing cholesterol 1% w/v; group 2 was infected with P. aeruginosa and fed a normal diet; group 3 was not infected and was fed a diet containing cholesterol 1% w/v; and group 4 (the control group) was not infected and was fed a normal diet. One month after the final inoculation, the rats were killed humanely; computerised image analysis was used to evaluate sections of the aorta and heart, and the maximal wall thickness of the aorta and coronary artery. The aortic wall thickness was significantly greater for group 1 (329.53 +/- 58.06 microm) compared to groups 2 (190.59 +/- 27.81 microm; p < 0.0001), 3 (262.90 +/- 61.12 microm; p < 0.0004) and 4 (158.00 +/- 30.30 microm; p < 0.0001). Similarly, the coronary artery wall thickness was significantly greater for group 1 (72.96 +/- 10.67 microm) compared to groups 2 (35.07 +/- 8.53 microm; p < 0.0001), 3 (41.45 +/- 10.22 microm; p < 0.0001) and 4 (32.30 +/- 5.27 microm; p < 0.0001). These findings strengthen the hypothesis that chronic infection plays a role in the pathogenesis of atherosclerosis.

Animals↗
PubMed2001

Coronary artery bypass grafting nine months after pneumonectomy.

We performed coronary artery bypass grafting on a 58-year-old man who only 9 months earlier had undergone right pneumonectomy for bronchial carcinoma. Although his preoperative pulmonary function had been poor, coronary artery bypass surgery was successful, and the patient was discharged on the 9th postoperative day Two years after surgery, he remained in New York Heart Association functional class I. We attribute this success to special management before, during, and after the operation. On the 32nd postoperative month, this patient died of multiple tumor metastases.

Angina, Unstable↗
PubMed2001

[Heart wounds].

In our study, we aimed to present our cases with heart wounds and to determine the factors influencing mortality. We retrospectively evaluated 23 cases with cardiac injuries who were treated among years 1986-99 in our clinic. There were 4 female and 19 male cases, and the average age was 32 years (range 12-52). Heart wounds were caused by blunt trauma in 6 cases, and penetrating trauma in 17 cases. Penetrating heart wounds was caused by gunshot wounds in four patients and stab wounds in 13 patients. Our cases were underwent to rapid resuscitation and emergency surgery. Mortality rate was 17% with 3 cases. Blunt cardiac wounds was caused by motor vehicle accidents in all cases. Diagnosis with immediate echocardiography and efficient treatment was performed. Mortality rate was 33% with 2 cases. We think that emergent resuscitation and immediately surgical exploration in patients with penetrating heart wounds and immediate diagnosis by echocardiography and prompt treatment in patients with blunt heart injuries may improve overall survival.

Adolescent↗
PubMed1999

Replacement of an immobile prosthetic mitral valve: a case report.

A mechanical prosthetic heart valve can become acutely obstructed despite anticoagulation therapy. This can be a life-threatening complication. We report the case of a 38-year-old woman who survived obstruction of her Sorin prosthetic mitral valve. She was admitted to the hospital because of severe pulmonary edema. On auscultation, mechanical valve sounds were absent. Transthoracic echocardiography showed an immobile mechanical valve. The patient suffered a cardiac arrest while being prepared for surgery, but she underwent successful mitral valve replacement after cardiopulmonary resuscitation. When patients with prosthetic mitral valves present with acute dyspnea, the possibility of an obstructed prosthetic valve must be considered in the differential diagnosis.

Adult↗
PubMed1997

Comparative methods of repairing left ventricular aneurysms.

Between 1 March 1992 and 31 June 1996, we enrolled 72 patients with left ventricular aneurysms in a prospective, nonrandomized study to compare--by study of cardiac indices, single-plane ejection fractions, and nuclear ventriculograms--the effects of classical aneurysmectomy (group 1, n = 36) with those of endoaneurysmorrhaphy (group 2, n = 36). Preoperative and postoperative cardiac index measurements were, respectively, 1.96 +/- 0.6 and 3.51 +/- 0.53 for group 1, and 1.96 +/- 0.31 and 3.43 +/- 0.41 for group 2. In this regard, there was not any significant difference between the groups preoperatively or postoperatively. Preoperative and postoperative multiple-gated acquisition measurements, were, respectively, 34.3 +/- 7.76 and 43.1 +/- 11.1 for group 1, and 37 +/- 3.88 and 66.5 +/- 5.2 for group 2. Although there was not any significant preoperative difference between the groups (P = 0.34), group 2 had significant postoperative improvement in left ventricular ejection fractions (P < 0.001). Preoperative and postoperative single-plane contrast ventriculographic ejection fractions were, respectively, 43.4 +/- 8.7 and 48.6 +/- 11.2 for group 1, and 43.8 +/- 5.5 and 60.8 +/- 15.1 for group 2. Again, there was not any significant difference between the 2 groups in preoperative left ventricular ejection fractions (P = 0.87), but the postoperative left ventricular ejection fractions of group 2 were significantly better than those of group 1 (P = 0.022). We conclude that left ventricular functional improvement with endoaneurysmorrhaphy is superior to that with classical aneurysmectomy.

Cardiac Output↗
PubMed1993

Traumatic tricuspid insufficiency following blunt chest trauma.

The insufficiency of the tricuspid valve developed due to blunt chest trauma is a rare and an insidiously progressing clinical incident. In this article we present a case which showed tricuspid insufficiency because of the rupture of the anterior papillary muscle due to trauma and which was treated surgically.

Adult↗