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Murat Basaran

Publications and source records attributed to Murat Basaran.

At least 19 recordsLinked to original sources
PubMed2007

Visceral artery aneurysms.

OBJECTIVE: Visceral artery aneurysms are rare vascular malformations and the literature lacks satisfactory general information about the pathology. The aim of this study was to review our experiences in the diagnosis and treatment of visceral artery aneurysms. MATERIALS AND METHODS: We retrospectively reviewed data on 10 patients who were diagnosed with visceral artery aneurysms at our institution between June 2002 and September 2005. All available clinical, pathologic, and postoperative data were reviewed and analyzed for postoperative outcome. RESULTS: Four splenic artery aneurysms, 2 hepatic artery aneurysms, 5 renal artery aneurysms, 1 superior mesenteric artery aneurysm, and 1 inferior mesenteric artery aneurysm (13 total visceral artery aneurysms) were diagnosed in 10 patients. All the patients were treated except 1 patient with bilateral renal artery aneurysms. One patient required emergent surgical treatment due to splenic artery aneurysm rupture. Only 1 patient underwent endovascular treatment (ie, coil embolization for a superior mesenteric artery aneurysm); otherwise all the patients were treated surgically on an elective basis. Surgical treatment modalities included ligation with exclusion in 4 patients (2 splenic artery aneurysms, 1 renal artery aneurysm, 1 hepatic artery aneurysm) and resection with revascularization in 4 patients (1 splenic artery aneurysm, 2 renal artery aneurysms, 1 hepatic artery aneurysm, 1 inferior mesenteric artery aneurysm). Histopathologic examination of the vascular materials revealed major atherosclerotic changes except one that showed inflammatory vasculitic changes. One patient required bleeding revision, and mortality did not occur in any of the patients. CONCLUSIONS: Visceral artery aneurysms are rare and potentially life-threatening vascular disorders. The number of cases diagnosed every year increases because of advanced radiologic diagnostic methods and screening programs. Careful consideration and early management of these malformations can be life saving.

Adult↗
PubMed2006

Is saphenofemoral junction reconstruction necessary during stripping of the saphenous vein?

BACKGROUND: Patients who had undergone complete ankle-to-groin stripping of the greater saphenous vein were evaluated retrospectively to assess the necessity of saphenofemoral junction reconstruction during the stripping procedure. Since 1996, in addition to the conventional complete stripping operation, we routinely perform a saphenofemoral junction reconstruction in patients presenting with greater saphenous vein reflux associated with low-grade (grades I-II) saphenofemoral junctional reflux. In this method, the size of the common femoral vein was adjusted to the desired diameter by a running linear suture technique after division of the greater saphenous vein. METHODS: Retrospective evaluation revealed that 73 limbs in 56 patients treated with this technique (group I). This group of patients was matched to another group of 65 patients (78 limbs) with similar characteristics and symptoms (group II) in whom the conventional complete ankle-to-groin stripping of greater saphenous vein was the treatment. The 2 groups were compared with respect to the incidence of complications, including recurrence of varicosities, ecchymosis, lymphocele, lymphorrhagia, wound infection, and paresthesia in the operated extremity. All patients also were evaluated by Doppler ultrasonography at 6 months, 12 months, and annually thereafter to determine the saphenofemoral junction reflux time (valve reflux time). The mean duration +/- SD of follow-up was 6.7 +/- 1.6 years (range, 2.1-10.8 years). RESULTS: Recurrence of varicosity was noted in 14 patients, 3 in group I and 11 in group II (P = .02). There were no statistically significant differences between the 2 groups in terms of ecchymosis, hematoma, lymphocele, lymphorrhagia, wound infection, and paresthesia. At 6 months, a rapid decrease in valve reflux time was noted in group I (P = .0001). In addition, there was a significant improvement in valve reflux time at each subsequent Doppler examination in group I. Group II showed a decrease in valve reflux time, compared with the preoperative value (P = .068). During subsequent Doppler examinations, a decrease in valve reflux time also was noted in group II; this difference reached statistical significance only at 24 months (P = .04). CONCLUSIONS: We believe that saphenofemoral junction reconstruction is a simple technique to perform and that addition of this method to the conventional stripping provides more durable results with a lesser incidence of recurrence. This method should be considered as a treatment modality in patients with greater saphenous vein reflux associated with low-grade (grades I-II) saphenofemoral junctional reflux.

Adult↗
PubMed2006

Simultaneous coronary artery bypass grafting and ascending aorta to bifemoral bypass for ischemic heart disease combined with critical leg ischemia: case reports.

Coronary artery disease may coexist with aortoiliac occlusive disease, and concomitant revascularization procedures may be required. The ascending aorta may be used as the source of inflow to both the femoral and coronary arteries in patients who present with coronary artery disease and critical leg ischemia. We present here 2 patients in whom coronary artery bypass grafting and ascending aorta-to-bifemoral bypass operations were performed simultaneously.

Anastomosis, Surgical↗
PubMed2006

Hybrid coronary revascularization in high-risk patients.

From January 2002 through June 2004, 17 patients (2% of all coronary cases) were treated with off-pump coronary artery bypass grafting combined with percutaneous coronary intervention. There were 13 men and 4 women, whose ages ranged from 54 to 78 years (mean, 63.1 +/- 20.9 yr). Preoperative angiography revealed 2-vessel coronary artery disease in 12 patients and 3-vessel disease in the remaining 5 patients. In all patients, extensive lesions (>50%) in the circumflex and right coronary arteries were treated first with a percutaneous intervention, followed by beating-heart coronary artery bypass grafting within 3 hours to treat the remaining obstructed vessels. Coronary angiography was performed 12 months after the operation to evaluate the effectiveness of the procedure. Procedure-related complications did not occur, and there was no in-hospital death. All patients underwent a successful left internal mammary artery-left anterior descending artery anastomosis with the exception of 1 patient, in whom we used a saphenous vein because of previous chest radiotherapy. The postoperative courses were uneventful, and no deterioration of preoperative organ dysfunction was noticed in any patient. There was no cardiac-related death or myocardial infarction. In follow-up angiography, all left internal mammary artery-left anterior descending artery anastomoses were patent. Three patients with restenosis were treated medically, which resulted in substantial reduction of angina. Hybrid coronary revascularization enables complete revascularization and may be an alternative method of treating selected patients who have concomitant disease.

Aged↗
PubMed2005

Serum lactate level has prognostic significance after pediatric cardiac surgery.

OBJECTIVE: The determination of postoperative course after cardiac surgery has always been a challenging issue. It is more sophisticated in the pediatric age group. The aim of this investigation was to identify whether increased concentrations of lactate in arterial blood has a predictive value for postoperative morbidity and mortality after heart surgery. METHODS: From May 2002 to June 2003, 60 infants operated on at the authors' institution were included in this prospective study. The patients were divided into 2 groups according to their respective postoperative serum lactate values. After the stabilization period in the intensive care unit (first 3 hours postoperatively), samples for serum lactate were obtained from arterial blood at 3 (t1), 6 (t2), and 12 hours (t3) postoperatively. The patients were subdivided into 2 groups according to their respective mean serum lactate values. A value of 4.8 mmol/L (3 times the normal upper limit) was chosen as a threshold for serum lactate. The patients with a mean value of greater than 4.8 mmol/L (group 1) were compared with the remaining group of patients (group 2). The relationship between serum mean lactate level and intraoperative and postoperative clinical variables was evaluated. RESULTS: Among the patients in this study, 26 (43.3%) had a serum mean lactate level more than 4.8 mmol/L and 34 (56.7%) had a level of 4.8 mmol/L or less. Age, aortic cross-clamping time, cardiopulmonary bypass time, and the lowest hematocrit during cardiopulmonary bypass were significant variables that influenced the postoperative serum mean lactate level. Six patients died in the postoperative period and 54 infants survived. The hospital mortality was significantly higher in group 1 than in group 2 (19.0% v 2.9%; p = 0.037, kappa = 0.179). Multivariate analysis revealed that serum mean lactate level correlated significantly with inotrope score, intubation time, and intensive care unit stay. CONCLUSIONS: Blood lactate concentration of 4.8 mmol/L or higher during the early postoperative hours identifies a group of patients with increased risk of postoperative morbidity and mortality.

Cardiac Surgical Procedures↗
PubMed2005

Heat stress increases the effectiveness of early ischemic preconditioning in spinal cord protection.

OBJECTIVE: This study was aimed to test the hypothesis that the combination of heat stress and early ischemic preconditioning (IP) applied before aortic occlusion would be protective against spinal cord ischemic injury. METHODS: Thirty Whister-Albino rats were randomly divided into three groups. In group 1 (n=10), aorta was clamped just distal to the left renal artery and above the iliac bifurcation for 45 min. Group 2 (n=10) had 5 min of transient aortic occlusion and 30 min later underwent an additional 45 min. In group 3 (n=10), animals were heated to 41 degrees C and maintained at this temperature for 15 min. Twenty-four hours later, this hyperthermia pretreated group underwent the same early IP model of aortic occlusion. Neurologic status was assessed on postoperative 24 and 48 h by using the 15-point neurologic performance scale. Spinal cords were harvested for histopathological grading (1-4) and evaluated for the presence of heat shock protein-ubiquitin staining. RESULTS: At 24 and 48 h, the mean neurologic performance scores of the group 1 were found to be significantly lower than those of groups 2 and 3. Although the neurologic assessment of rats performed on the 24h did not reveal statistically significant difference between groups 2 and 3 (P=0.069); on 48 h, the mean neurologic scores of the group 3 were significantly higher than those of group 2 (P=0.005). At 48 h, a delayed neurologic deterioration was seen in groups 1 and 2 when compared to the results obtained at 24h. Histologic evaluation correlated well with the neurologic outcome with the least cellular damage in group 3. There were six rats with ubiquitin expression and this was detected only in animals pretreated with sublethal heat stress. CONCLUSIONS: An early IP model with a short reperfusion interval does not give the minimal required time for the HSPs expression and is associated with a delayed neurologic deterioration. Neuroprotection provided by heat stress combined with an early IP model lasts up to 48 h and heat shock protein-ubiquitin induction may be responsible in this phenomenon.

Animals↗
PubMed2005

The surgical treatment of arterial aneurysms in Behçet disease: a report of 16 patients.

OBJECTIVE: The aim of this article is to report our experience in the surgical treatment of arterial aneurysms in patients with Behçet disease. METHODS: From October 2001 through May 2004, 18 arterial aneurysms were diagnosed in 16 Behçet patients. All patients were male. The patients ranged in age from 24 to 52 years (mean, 37.4 +/- 5.2 years). There were six abdominal aortic, three common femoral, two iliac, two popliteal, two superficial femoral, and two anterior tibial aneurysms and one subclavian artery aneurysm. All patients but four were in remission at the time of diagnosis. Those 4 patients received immunosuppressive therapy before the surgical intervention to induce remission. After hospital discharge, all patients were followed up regularly at 3-month intervals. The mean duration of follow-up was 17 +/- 4.2 months (range, 6-24 months). RESULTS: All patients underwent a successful surgical intervention. During the study period, we performed five aortic tube graft interpositions, two aortofemoral bypasses, one aortobifemoral bypass, three common femoral artery graft interpositions, and two femoropopliteal bypasses. The popliteal artery (n = 2), anterior tibial artery (n = 2), and subclavian artery (n = 1) aneurysms were repaired primarily. There was no in-hospital mortality. One patient with an abdominal aortic aneurysm had to undergo reoperation because of postoperative bleeding. The postoperative hospital stay was 8.5 +/- 4.3 days. Two patients were lost to follow-up. During the follow-up period, two false aneurysms of the common femoral artery were repaired with a graft interposition procedure. Another patient who had undergone an aortic tube graft interposition was readmitted 9 months later with an external iliac artery aneurysm. The external iliac artery was ligated through a retroperitoneal approach, and femorofemoral bypass was performed. In addition, one femoropopliteal interposition graft was occluded, without disabling ischemia. CONCLUSIONS: Although aneurysmal disease is rare in Behçet disease, it can complicate the clinical picture and cause life-threatening complications. We believe that the establishment of remission before the surgical intervention decreases the incidence of postoperative complications. Because recurrence at the site of anastomosis is possible, prolonged monitoring is required.

Adult↗
PubMed2004

The benefits of continuous ultrafiltration in pediatric cardiac surgery.

BACKGROUND: Systemic inflammatory response and capillary leak syndrome, caused by extracorporeal circulation, have negative effects on the function of vital organs during the postoperative period. Modified ultrafiltration (MUF) has been developed as an alternative method to reduce the detrimental effects of cardiopulmonary bypass. The aim of this prospective, randomized study is to analyze the effects of MUF in a pediatric population undergoing congenital cardiac surgery. METHODS: Twenty-seven patients who underwent open-heart surgery at our institution were included in this prospective study. They were randomized into two groups as follows: Group I (n=14) of conventional ultrafiltration during bypass and Group II (n=13) receiving both conventional and modified ultrafiltration during and after the cessation of the bypass, respectively. The amount of prime volume, postoperative chest drain loss, transfusion requirements, hemodynamical parameters, duration of mechanical ventilatory support, and length of intensive care unit stay were compared between the two groups. During the postoperative period, the concentrations of hematological, biochemical and inflammatory parameters were also compared by analyzing the blood samples obtained at various time points. RESULTS: MUF resulted in a significant increase in hemoglobin, hematocrit and platelet levels, and significantly reduced the amount of chest tube output and transfused blood and blood products. MUF also shortened the duration of postoperative mechanical ventilatory support, length of the intensive care unit stay and improved postoperative hemodynamical parameters. During the early postoperative hours, IL-8 is significantly reduced in patients undergoing MUF, however, the concentrations of IL-8 were similar in both groups at the end of 24 h. CONCLUSIONS: MUF decreases the duration of mechanical ventilatory support, the length of intensive care unit stay, the need for blood transfusion and improves postoperative hemodynamics. It is associated with increased levels of hemoglobin, hematocrit and platelets. We can conclude that MUF attenuates the inflammatory response by decreasing the levels of inflammatory mediators.

Blood Pressure↗
PubMed2003

Peri-operative comparison of different transient external shunt techniques in bidirectional cavo-pulmonary shunt.

OBJECTIVE: In patients with functional single ventricular physiology, the avoidance of cardiopulmonary bypass offers many advantages including earlier extubation, decreased necessity of inotropic support, improved hemodynamical status and reduced likelihood of post-operative prolonged pleural effusion. We believe that the bidirectional cavopulmonary anastomosis operations may be performed with transient external shunt techniques. The purpose of this prospective study is the peri- and post-operative comparison of different transient external shunt methods used in bidirectional cavopulmonary shunt operations. METHODS: Between years 1997 and 2000, 30 patients have undergone bidirectional cavo-pulmonary shunt operation by using three different types of external shunt. The mean patient age was 13 months (range, 3 months-3 years). Previous operations had been performed in ten patients (33%). All patients were divided into three groups according to type of external shunt used. In group A (ten patients), the transient external shunt was constructed between superior vena cava and right atrium by uniting two standard venous cannulas with a Y-connector. In group B (ten patients), the external shunt was performed with a single short venous cannula constructed between superior vena cava and right atrium. In group C (ten patients), the external shunt was constructed between superior vena cava and left pulmonary artery by using a single short venous cannula. During operation, central venous pressure (CVP), arterial O(2) saturation and mean arterial blood pressure were recorded continuously. RESULTS: All operations are completed without the establishment of cardiopulmonary bypass. Hospital mortality was 3.3%. One patient in group A died because of low cardiac output at the end of postoperative day 2. All patients were extubated within 4h. In groups A-C mean superior vena caval pressures were measured 28, 24 and 21 mmHg, respectively during superior vena cava-right pulmonary artery anastomosis. In both groups A and B patients, arterial O(2) saturation decreased to a minimum 53+/-2 and 53+/-2%, respectively during the operation. In the group C, minimum arterial O(2) saturation was measured 82+/-2%. Although mean arterial pressure decreased in all groups during clampage; in group C patients, this drop is not significant. CONCLUSION: Based on the study presented here, bidirectional cavo-pulmonary anastomosis can be carried out by using different types of transient external shunt. The best hemodynamical condition and arterial O(2) levels were achieved with the shunt constructed between superior vena cava and left pulmonary artery.

Anastomosis, Surgical↗
PubMed2003

Repair of ascending aortic aneurysm in a patient with fibrosarcoma over sternum.

The combination of an ascending aortic aneurysm and suprasternal soft tissue tumor is rarely reported in the literature. This case involves a 62-year-old man diagnosed with an ascending aortic aneurysm and a fibrosarcoma over the sternum that was successfully treated by surgery. The patient underwent an aortic replacement operation with a Dacron graft and a muscle flap transposition procedure to cover the defect over the sternum.

Aortic Aneurysm↗
PubMed2002

Single-stage unifocalization and correction with median sternotomy in complex pulmonary atresia.

OBJECTIVE: This study assessed the surgical and post-operative outcome of single-stage complete unifocalization and repair procedure in patients with complex pulmonary atresia. METHODS: From 1999 to 2001, we performed complete unifocalization and correction in 10 patients with complex pulmonary atresia. Their ages ranged from 10 months to 17 years. All patients were evaluated with pulmonary angiography and divided into two groups according to the development of native pulmonary arteries. Group I patients had hypoplastic pulmonary arteries and MAPCAs and Group II patients had only MAPCAs without native pulmonary arteries. With median sternotomy, all MAPCAs were prepared and anastomozed to native pulmonary arteries in group I patients or on a pericardial roll in group II patients without using cardiopulmonary bypass. Right ventricle to pulmonary arterial continuity was established with a valved conduit under CPB. VSD was closed in two patients. RESULTS: Eight patients had complete repair without VSD closure. They were followed periodically with pulmonary angiography. Two patients developed congestive heart failure. One of them was reoperated and VSD was closed. The other patient died because of untractable congestive heart failure. The decision for VSD closure was made in two patients due to suitable pulmonary arterial vascular tree. However, one of them had to be reoperated and VSD patch was removed. This patient died because of sepsis on the postoperative 26th day. We are following the rest of the patients with echocardiography and pulmonary angiography. CONCLUSION: Single stage complete unifocalization and repair should be the treatment of choice in patients with complex pulmonary atresia. This procedure provides a significant development in neopulmonary arterial system. However, the accurate criterias for VSD closure are still controversial. After the operation, these patients had to be followed closely with echocardiography and pulmonary angiography because of the absolute risk of congestive heart failure in patients with VSD left open.

Adolescent↗
PubMed2002

Successful repair of ascending aortic aneurysm due to Takayasu's arteritis.

A 2-year-old girl with Takayasu's arteritis and an ascending aortic aneurysm underwent successful graft replacement. Although aneurysms of the great vessels are rarely encountered, this disease should be considered in the differential diagnosis of ascending aortic aneurysms in children.

Aortic Aneurysm↗