[show abstract][hide abstract] ABSTRACT: A paraganglioma is a rare tumor that develops out of extra-adrenal chromaffin cells and pheochromocytomas originating from the adrenal medulla. Early diagnosis and surgical planning are crucial, since the tumor secretes catecholamine and is adjacent to large vessels in the abdomen. Furthermore, since complete resection improves the prognosis, we recommend a meticulous surgical technique. Here, we present a case of paraganglioma in a 32-year-old male patient who initially presented with a stomachache. After conducting the required tests, we resected the tumor that was pressing against the vena cava in the interaortocaval region.
Annals of thoracic and cardiovascular surgery : official journal of the Association of Thoracic and Cardiovascular Surgeons of Asia. 06/2011; 17(3):310-2.
[show abstract][hide abstract] ABSTRACT: Penetrating cardiac injuries have a rather high mortality and require a rapid diagnosis and emergency surgical intervention. The aim of this study was to present and discuss our experience with penetrating heart wounds.
Sixteen patients with penetrating cardiac injury underwent surgical treatment at the Department of Cardiovascular Surgery between 1985-2007. The patients ranged in age from 6 to 71 years (mean age 45.1 years). The cause of cardiac injury was stab wounds in 8 patients (50%), iatrogenic reasons in 6 patients (37.5%) and shotgun wounds in 2 patients (12.5%).
Exposure to the heart was accomplished by a median sternotomy in 12 patients (75%) and a left-sided anterolateral thoracotomy in 4 patients (25%). The right ventricle (RV) was injured in 7 patients (43.75%), left ventricle (LV) in 3 patients (18.75%), left atrium (LA) in 1 patient (6.25%), LV+LA in 1 patient (6.25%), and coronary arteries in 4 patients (25%). Cardiac wounds were treated by simple suture technique over Teflon or pericardial pledgets in all patients. Two patients died in the early postoperative period.
The basis for successful management of penetrating cardiac trauma is effective resuscitative measures followed by early detection and definition and emergency surgical treatment of the injury.
Ulusal travma ve acil cerrahi dergisi = Turkish journal of trauma & emergency surgery: TJTES 05/2009; 15(2):171-5. · 0.34 Impact Factor
[show abstract][hide abstract] ABSTRACT: Percutaneous interventions are increasingly used in the treatment of cardiac diseases which are resistant to medical treatment. However, the complications caused by these interventions can lead to serious results. In this article, we present a case of a successful combination of interventional and surgical treatment methods, following the development of left atrial perforation during radiofrequency catheter ablation (RFA), in a patient with atrial fibrillation resistant to medical treatment.
Interactive cardiovascular and thoracic surgery 02/2009; 8(4):494-5.
[show abstract][hide abstract] ABSTRACT: Intimal hyperplasia is a major cause of restenosis after the interventional or surgical treatment of occlusive arterial disease. We investigated the effects of clopidogrel, calcium dobesilate, nebivolol, and atorvastatin on the development of intimal hyperplasia in rabbits after carotid venous bypass surgery. We divided 40 male New Zealand rabbits into 4 study groups and 1 control group. After occluding the carotid arteries of the rabbits, we constructed jugular venous grafts between the proximal and the distal segments of the occluded artery. Thereafter, group 1 (control) received no medication. We administered daily oral doses of clopidogrel to group 2, calcium dobesilate to group 3, nebivolol to group 4, and atorvastatin to group 5. The rabbits were killed 28 days postoperatively. The arterialized jugular venous grafts were extracted for histopathologic examination. Intimal thicknesses were 42.87 +/- 6.95 microm (group 2), 46.5 +/- 9.02 microm (group 3), 34.12 +/- 5.64 microm (group 4), and 48.37 +/- 6.16 microm (group 5), all significantly less than the 95.12 +/- 9.93 microm in group 1 (all P < 0.001). Medial thicknesses were 94 +/- 6 microm (group 2), 101.5 +/- 13.52 microm (group 3), 90.5 +/- 9.69 microm (group 4), and 101.37 +/- 7.99 microm (group 5), all significantly thinner than the 126.62 +/- 13.53 microm in group 1 (all P < 0.001). In our experimental model of carotid venous bypass grafting in rabbits, clopidogrel, calcium dobesilate, nebivolol, and atorvastatin each effectively reduced the development of intimal hyperplasia. Herein, we discuss our findings and review the medical literature.
Texas Heart Institute journal / from the Texas Heart Institute of St. Luke's Episcopal Hospital, Texas Children's Hospital 01/2009; 36(5):387-92. · 0.67 Impact Factor
[show abstract][hide abstract] ABSTRACT: Placement of an external support has been reported to prevent intimal hyperplasia of vein grafts. In this study, we investigated the effect of HA/CMC on intimal hyperplasia in a rabbit model.
Right jugular vein to common carotid artery bypass grafting was performed in 24 female New Zealand white rabbits (2.5-3.0 kg). Animals were divided into two groups: control group (n=12) and HA/CMC group (n=12). Absorbable membrane barrier was wrapped around vein grafts in HA/CMC group. In control group, no material was applied following venous graft bypass.
At 1 month, in the vein grafts supported with the HA/CMC membrane neointimal thickening was significantly less (109 microm [IQR, 78-166]) compared to the unsupported control grafts (220 microm [IQR; 101-312]; p<0.001). Medial thickening in the HA/CMC group (128 microm [IQR, 101-181]) compared to unsheathed control grafts (182 microm [IQR, 131-255] p<0.001) was also significantly less.
Periadventitial placement of HA/CMC as an absorbable membrane inhibits intimal hyperplasia of vein bypass grafts in a rabbit model.
[show abstract][hide abstract] ABSTRACT: An increasing number of patients are found to be unsuitable for revascularization by conventional approaches to the epicardial vessels. Transmyocardial laser revascularization (TMR) is a treatment choice for patients who have refractory angina pectoris when bypass surgery or percutaneous transluminal angioplasty is not indicated. Transmyocardial laser revascularization leads to significant improvements in angina. It also improves quality of life, reduces hospital readmission rates and may improve exercise tolerance. However, the technique does not effect survival, ejection fraction, cardiac events and myocardial perfusion with nuclear studies. Further results from ongoing trials are awaited with interest.
Anadolu kardiyoloji dergisi: AKD = the Anatolian journal of cardiology 03/2008; 8(1):58-64. · 0.72 Impact Factor
[show abstract][hide abstract] ABSTRACT: In this study, we present a 55-year-old female patient who suffered from atrial septal defect (ASD) and retrosternal toxic goitre simultaneously. The patient had been treated with a 300 mg/day dose of propylthiouracil for 20 days prior to operation. This patient has been operated on for both disorders and has recovered.
Annals of thoracic and cardiovascular surgery: official journal of the Association of Thoracic and Cardiovascular Surgeons of Asia 09/2007; 13(4):272-4. · 0.47 Impact Factor
[show abstract][hide abstract] ABSTRACT: In this study, we examined the adherence of slime-producing standard Staphylococcus epidermidis strain ATCC 12228 to Dacron and polytetrafluoroethylene (PTFE) grafts in in vitro medium either containing salicylate or not. Dacron and PTFE graft pieces of standard size were placed in trypticase soy broth either containing 5 mM acetylsalicylic acid solution or not. These soy broths also contained 1 x 10(7) colony-forming units/mL S. epidermidis ATCC 12228. The incubation period lasted for 18 hr at 37 degrees C. The bacteria on the graft were freed by vortexing. The obtained bacteria suspension was diluted serially. Afterward, the suspension was plated on 5% sheep blood agar and counted after overnight incubation. In this study, we demonstrate that aspirin of an ideal concentration (5 mM) decreased the adherence of slime-producing S. epidermidis strain to Dacron and PTFE grafts. The mean number of colonies was significantly lower for both Dacron and PTFE groups in salicylated medium. We believe that aspirin provided in the postoperative period can, by maintaining the ideal serum level, decrease graft infections emerging due to coagulase-negative staphylococcus.
Annals of Vascular Surgery 08/2007; 21(4):464-7. · 0.99 Impact Factor
[show abstract][hide abstract] ABSTRACT: This study compared the effects of different methods of papaverine application on free blood flow and harvesting time of the internal thoracic artery for coronary bypass grafting. Patients were randomly divided into 3 groups of 25 each: group 1 had papaverine injected into the endothoracic tissue around the internal thoracic artery before dissection, group 2 had papaverine injected into the periarterial tissues of the internal thoracic artery pedicle, and group 3 had intraluminal papaverine applied retrogradely into the internal thoracic artery. Mean blood flow was 56.3 +/- 21.3, 21.1 +/- 13.2, and 20.9 +/- 9.1 mL x min(-1) in groups 1, 2, and 3, respectively, immediately after harvesting. Flow in group 1 was significantly better than that in groups 2 and 3. Immediately before anastomosis, mean flow was 89.8 +/- 19.1, 97.6 +/- 35.4, and 95.9 +/- 19.9 mL x min(-1) in groups 1, 2, and 3, respectively, with no significant difference among groups. Internal thoracic artery harvesting times were shorter in group 1 than in groups 2 and 3. Administering papaverine into the endothoracic fascia of the internal thoracic artery bed prior to dissection is a reliable method that facilitates rapid harvesting of the graft without causing trauma and consequent spasm.
Asian cardiovascular & thoracic annals 07/2007; 15(3):234-7.
[show abstract][hide abstract] ABSTRACT: Dans cette étude, nous avons examiné l'adhérence de la souche de référence Staphylococcus epidermidis ATCC 12228 productrice de slime à des prothèses en Dacron et en polytétrafluoroéthylène (PTFE) dans un milieu in vitro contenant ou pas du salicylate. Des morceaux de prothèse en Dacron et en PTFE de taille standard étaient placés dans un bouillon trypticase soja contenant 5 mM d'une solution d'acide acétylsalicylique ou pas. Ces bouillons de soja contenaient également 1 x 107 unités formant colonie/mL de S. epidermidis ATCC 12228. La période d'incubation durait 18 heures à 37°C. Les bactéries adhérant aux prothèses étaient libérées par vortexage. La suspension de bactéries obtenue était diluée en série. Les différentes dilutions étaient ensemencées sur des géloses contenant 5% de sang de mouton soumises à un décompte bactérien après incubation d'une nuit. Dans cette étude, nous démontrons que l'aspirine à une concentration idéale (5 mM) diminue l'adhérence de la souche de S. epidermidis productrice de slime sur les prothèses en Dacron et en PTFE. Le nombre moyen de colonies était sensiblement inférieur pour les groupes Dacron et PTFE en présence d'aspirine. Nous pensons que l'administration d'aspirine en postopératoire peut, en maintenant un niveau sérique idéal, diminuer l'incidence des infections de prothèse dues aux staphylocoques coagulase négative.
Annales De Chirurgie Vasculaire. 01/2007; 21(4):72-76.
[show abstract][hide abstract] ABSTRACT: We have reported the short- and long-term results of mitral valve replacement in this article.
Mitral valve replacement was conducted in 276 patients in our clinic between January 1989 and March 2005. The youngest patient was 4 years old and the oldest patient was 74 years old. Mean age was 40.08 +/- 1.06 y. Of these patients, 41.3% were men and 58.7% were women. The reason for operation was mitral stenosis in 96 patients (34.78%), mitral insufficiency in 78 patients (29.26%) and mitral stenosis plus mitral insufficiency in 102 patients (36.96%). The aetiology of mitral valve lesions was acute rheumatic fever in 208 patients (75.36%). The aetiology of mitral valve lesions was degenerative in 37 patients (13.41%), ischaemic in 23 patients (8.33%) and congenital in 8 patients (2.9%).
In the 5, 10 and 15-year periods, the actual survival rates were 87.64% +/- 2.02%, 83.35% +/- 2.38% and 68.19% +/- 5.63%, respectively. Thromboembolism was observed in 38 patients (13.77%). The rates of actual freedom from thromboembolism in the 5, 10 and 15-year periods were 93.08% +/- 1.53%, 88.48% +/- 1.99% and 81.06% +/- 3.43%, respectively. Of the 276 patients who had been observed for 15 years, 5 had (1.81%) valvular thrombosis. The rates of actual freedom from valvular thrombosis in the 5, 10 and 15-year periods were 98.89% +/- 0.64%, 98.04% +/- 0.87% and 98.04% +/- 0.87%, respectively. In the 15-year period, 23 patients (8.33%) had haemorrhage due to anti-coagulation. The rates of actual freedom from haemorrhage due to anti-coagulation in the 5, 10 and 15-year periods were 95.64% +/- 1.23%, 93.40% +/- 1.56% and 87.73% +/- 2.96%, respectively. Seven patients (2.54%) had prosthetic valvular endocarditis. The rates of actual freedom from endocarditis in the 5, 10 and 15-year periods were 98.51% +/- 0.74%, 97.60% +/- 0.97% and 97.01% +/- 1.13%, respectively. Nine patients (3.27%) were re-operated. The rates of actual freedom from re-operation in the 5, 10 and 15-year periods were 97.45% +/- 0.95%, 96.58% +/- 1.12% and 96.58% +/- 1.12%, respectively.
St. Jude Medical mechanical valve prosthesis has been the valve of choice in our clinic owing to its excellent haemodynamic properties and low rates of complication.
[show abstract][hide abstract] ABSTRACT: Cognitive dysfunction (as an indicator of cerebral dysfunction after open heart surgery) was observed in as many as 70% of patients who underwent cardiopulmonary bypass. S-100beta protein is a sensitive indicator of cerebral injury. We aimed to compare the effects of hydroxyethyl starch and Ringer lactate prime solutions in the protection of cerebral tissue in cardiopulmonary bypass using serum S-100beta protein levels and informative cognitive tests.
Patients were randomized into two groups. Open heart surgery was performed by using hydroxyethyl starch solution in group 1 (n = 15) and Ringer lactate solution in group 2 (n = 15). Preoperative, perioperative, and postoperative S-100beta protein levels and informative cognitive test scores, clinical and operational characteristics of the patients were compared.
A significant difference was found only between preoperative and postoperative results of verbal accuracy (human) test in group 1, whereas differences between preoperative and postoperative scores of continuous skill, verbal accuracy (human), verbal accuracy (animal), verbal accuracy (human-animal), go-no-go paradigm, calculation, and abstract thinking tests were significant in group 2 (p < or = 0.05). The S-100beta protein levels were not significantly different between the groups (group p = 0.97).
Because hydroxyethyl starch prime solution used in extracorporeal circulation had significant positive effects with informative-cognitive tests when compared to Ringer lactate solution, it seems to be a better prime solution to prevent cerebral dysfunction in these patients.
The Annals of thoracic surgery 03/2005; 79(2):666-71. · 3.74 Impact Factor
[show abstract][hide abstract] ABSTRACT: To analyze the operation methods, injury etiologies and localizations, post-operative complications and the reasons for mortality in patients who were admitted for peripheral vascular injuries to our clinics.
From January 1979 to February 2002, 410 patients were operated for peripheral vascular injuries. Three hundred and one of the patients were male (73.5%) and 109 of them were female (26.5%), and their ages ranged between 1-88 (mean 35.5 years).
The most common etiological reason was firearm injuries in 163 patients (39.8%). The most common injured artery was the brachial artery (83 patients, 22.5%) among a total of 369 patients whereas the most commonly injured vein was the common femoral vein (60 patients, 23.4%) in a total of 256 patients. Isolated venous injuries were encountered in 41 patients whereas isolated arterial injuries were detected in 154 patients (37.5%). Hospital admission duration of the patients after trauma was approximately 3 hours.
The extremity-salvage rate in the group was 92.3%. The hospital stay period of the patients was 21.8 days. The mortality rate was 2.6% (11 patients).
Annals of thoracic and cardiovascular surgery: official journal of the Association of Thoracic and Cardiovascular Surgeons of Asia 01/2005; 10(6):373-8. · 0.47 Impact Factor
[show abstract][hide abstract] ABSTRACT: Between January 1983 and December 2000, 78 patients underwent primary repair of a ventricular septal defect. There were 42 males (54%) and 36 females (46%) of whom 13 (17%) were under 1 year old, 50 (64%) were aged 1-10 years, 11 (14%) were aged 10-20 years, and 4 (5%) were over 20 years old. The ventricular septal defect was a perimembranous type in 60 patients (77%), subarterial (outlet) type in 10 (13%), and atrioventricular canal (inlet) type in 4 (5%). Operative repair was performed with a patch in all except 2 patients. Early postoperative complications included insignificant aortic regurgitation in 4 patients, persistent complete heart block in 1, and residual shunt in 4. There were 5 early deaths (6.4%) and 1 late death (1.8%) in 56 patients followed up. Early primary closure of ventricular septal defects, usually via a right atriotomy, can be performed with acceptable mortality and morbidity rates.
Asian cardiovascular & thoracic annals 10/2003; 11(3):213-6.
[show abstract][hide abstract] ABSTRACT: A case of extracranial internal carotid artery aneurysm Aneurysms of the extracranial internal carotid artery are uncommon but can be responsible for serious complications such as rupture, thrombosis, or embolism. The underlying causes of aneurysm include atherosclerosis, fibromuscular dysplasia, trauma, previous carotid artery surgery, infection, dissection, syphilis and a congenital defect. Five distinct clinical types of aneurysms are reported with different symptoms and treatment. We report a case of extracranial internal carotid artery aneurysm and its successfully surgical treatment.