PubMed Health⌕ Search

Biomedical subjects

A Aytaç

Publications and source records attributed to A Aytaç.

At least 19 recordsLinked to original sources
PubMed1997

A rare case of mixed type total anomalous pulmonary venous connection and its surgical treatment.

In the mixed types of total anomalous pulmonary venous connection, pulmonary veins frequently show an opening at the supracardiac and cardiac level. Rarely, some other combinations of mixed type cases have been reported in the literature. In the present case the right and left pulmonary veins formed two distinct venous chambers and showed supracardiac and infracardiac openings. Anastomosis of each of these common venous chambers was performed to the left atrium, separate from each other, by extracardiac approach. The patient had no hemodynamic problems in the postoperative period and showed no pulmonary venous obstruction in a control angiography performed after 9 months. He has not needed medication and has shown no limitation of activity during a follow-up of 5 years.

Abnormalities, Multiple↗
PubMed1996

Early and moderate long-term results of a new surgical technique for repair of aortic coarctation.

OBJECTIVE: From June 1987 to September 1995, 53 patients underwent a new technique of coarctation repair. This technique consists of complete mobilization of the left subclavian artery so that it can be pulled down as far as possible. METHOD: After all the necessary clamping, the anterior wall of the aorta is incised longitudinally beginning on the anterior wall of the left subclavian artery and extending distally to the descending aorta 1-2 cm past the coarctation. The left subclavian artery is pulled down so that the proximal end of the incision can reach the distal end. Then, this longitudinal incision is sutured transversely with 5/0 or 6/0 polydioxanone and continuous technique, enlarging the coarctation site and also preserving the blood flow to the left upper limb. The ages of the patients ranged from 16 days to 20 years (mean 3.7 years). Thirty patients were younger than 1 year old. One patient (1.9%) died postoperatively due to persistent pulmonary hypertension. RESULTS: There was no pressure gradient perioperatively through the coarctation site after the repair. The mean follow-up was 34.4 +/- 27.5 months (range 1-99 months). All patients but one were in class I effort capacity (NYHA). Doppler echocardiographic studies were performed in 45 patients postoperatively. There was no restenosis or aneurysm formation at the coarctation site and the mean pressure gradients were between 19.8 +/- 16.2 mmHg. CONCLUSION: The authors experience indicates that this technique could be a good alternative to the subclavian flap aortoplasty because of the preservation of blood flow to the left arm.

Adolescent↗
PubMed1990

Combined internal mammary artery graft for coronary artery revascularization.

Five patients with multiple-vessel coronary artery disease underwent isolated coronary artery bypass grafting with a technique involving both internal mammary arteries and a small piece of interposed saphenous vein. The combined internal mammary artery grafts were used for sequential grafting. A total of 20 anastomoses were performed (average number, 4 anastomoses per patient). There were no operative deaths. Postoperative complications included reoperation for bleeding in 1 patient and diaphragmatic dysfunction in another. Postoperative coronary angiography 2 days before discharge (mean time, 10 days postoperatively) revealed that all the sequential anastomoses with the combined IMA graft were patent. Exercise tolerance tests performed 3 and 11 months postoperatively indicated excellent results and no ischemia. Based on this experience, we conclude that this method appears promising for multivessel coronary artery bypass grafting.

Coronary Angiography↗
PubMed1982

Retrograde coronary sinus perfusion of cold cardioplegic solutions in the presence of coronary arterial occlusions. Experimental study.

Coronary arterial stenoses impose a constraint on the delivery of cold cardioplegic solutions conventionally perfused via the aortic root, resulting in uneven myocardial cooling and protection. Therefore the hearts undergoing coronary bypass operations show impaired cooling of the post-occlusive myocardial regions, and temperature gradients among different myocardial fields are registered after cold cardioplegic perfusion. We applied retrograde coronary sinus perfusion of cold cardioplegic solution in canine hearts with occluded multiple left coronary arterial branches to overcome the above-mentioned drawbacks, and a uniform left ventricular cooling was demonstrated by this technique.

Animals↗
PubMed1981

Aortico-left ventricular tunnel.

A 10-year-old boy with aortico-left ventricular tunnel, a very unusual congenital cardiovascular malformation, is presented. Closure of both orifices of the tunnel by round teflon patches is recommended. We think this surgical technique is superior to closure of these openings by primary sutures only, which can result in stretching and distortion of the aortic ring and leaflets leading to postoperative residual aortic regurgitation.

Adolescent↗
PubMed1980

Congenital right coronary artery-right atrial fistula.

A rare type of congenital fistula between the right coronary artery and the right atrium, where fistula was draining just above the inferior vena caval orifice, is presented. Patient was operated on utilizing cardiopulmonary bypass and the fistulous opening into the right atrium was closed by interrupted ti-cron sutures supported with teflon pledgets. The benefits of using cardiopulmonary bypass in these operations or at least having it stand-by in the operating room are emphasized for safer closure of the fistula when needed.

Cardiopulmonary Bypass↗
PubMed1980

Congenital double-orifice mitral valve. Report of a case with valve replacement.

A case of double-orifice mitral valve (duplication of the mitral valve) in an 18-month-old baby is presented. The valve showed significant regurgitation and was replaced with a No. 20 Lillehei-Kaster mitral prosthesis. Patient is kept on dipyridamole (Persantin) 10 mg/Kg and aspirin 50 mg/Kg daily to avoid postoperative thromboembolic complications. It is emphasized that valve replacement should be the treatment of choice in severe mitral regurgitation associated with double-orifice mitral valve.

Humans↗
PubMed1977

Inhalation of foreign bodies in children. Report of 500 cases.

Inhalation of foreign bodies is a major cause of accidental death during childhood. Aspiration of foreign bodies is common in children aged 1 to 3 years, especially in boys. A past history of foreign body aspiration is itself an indication for bronchoscopic examination of the airways, because some children with aspirated foreign bodies are without symptoms and chest x-ray films may not show abnormalities. Bronchoscopic removal of the foreign bodies requires close communication between the anesthesiologist and the endoscopist. Forgotten foreign bodies in the airways cause chronic pulmonary infections, allergic asthma, bronchiectatic changes, and lung abscess. Foreign bodies that cannot be grasped by bronchoscopic forceps should be removed by thoracotomy and bronchotomy. This report describes our experience in 500 children with suspected foreign body inhalation. We routinely use prednisolone, 1 to 2 mg. per kilogram, and nebulization just after bronchoscopic examination of the airways. This medication greatly diminishes the rate of postbronchoscopic complications such as laryngeal edema, which require tracheostomy. In our series of 500 case, the incidence of postbronchoscopic tracheostomy is 1.4 per cent and the total mortality rate is 1.8 per cent.

Aerosols↗
PubMed1976

Pulmonary artery sling.

A case of pulmonary artery sling in a 1-year-old boy, treated by resection of the left pulmonary artery (LPA) at its origin from the right pulmonary artery (RPA) and reanastomosis of the LPA to the main pulmonary artery (MPA), is reported. In this patient the LPA-MPA anastomosis was demonstrated to be patent in a follow-up pulmonary angiogram six months after the operation. Pulmonary artery sling should be kept in mine when assessing respiratory distesss syndrome in children.

Humans↗
PubMedDate not supplied

Atrial natriuretic peptide: could it be a marker for postoperative recurrent effusions after Fontan circulation in complex congenital heart defects?

Fontan operation and its modifications are used for the physiological correction of complex congenital heart malformations with functionally single ventricle. Atrial natriuretic peptide (ANP), a physiological diuretic and vasodilator that--together with the effects of cardiopulmonary bypass--plays an important role in the augmentation of capillary permeability in Fontan patients. The rise in right atrial pressure and wall stress is an important stimulus for the release of ANP. ANP levels were measured before and early after surgery in Fontan group (n = 20) and control group (n = 20, patients with simple cardiac defects) to study its influence on and association with mean right atrial pressure, pulmonary vascular resistance (PVR), systemic vascular resistance, amount of drainage during early and late postoperative period, duration of intensive care unit and hospital stay, and need for colloid supplement. Early postoperative ANP values showed a negative correlation with PVR (r = -0.55) and total drainage (r = -0.88). There was no significant change in ANP during surgery or in the postoperative period in control patients. Reduction of PVR and maintenance of efficient urine output are important in the management of Fontan circulation. We conclude that high levels of ANP measured early after Fontan operation can be used as a marker for the successful establishment of Fontan circulation in patients with complex congenital heart defects.

Adolescent↗