Renal amyloidosis complicating Takayasu's arteritis: a case report.
Explore the source record for details and available documents.
Biomedical subjects
Publications and source records attributed to N Duman.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
In this first clinical trial femoral vein transposition (FVT) was prospectively compared with its "graft" counterpart. Patients requiring vascular access due to occluded central veins were divided into two groups: group I (n = 17) underwent femoral loop grafts and group II (n = 15), FVT. Complications were recorded prospectively and patency rates were compared by the Kaplan Meier method with statistical comparisons by Mann Whitney U and chi-square tests as appropriate. Between 1999 and 2003 30 patients underwent 32 operations. Mean follow-up was 8.9 months in group I and 6.8 months in group II (P >.05). Three group I patients developed a steal, requiring closure of the fistula in one. Five group II patients developed a steal, requiring closure of the fistula in one. The incidence of steal was similar in both groups (P >.05). The infection rates were similar: 35.3% and 26.7% in group I versus group II (P >.05), respectively. Among the six infections in group I, four patients required excision of the graft due to infection, whereas only one arteriovenous fistula (AVF) was closed in group II for infection. The 1-year primary patency rate in group I was 37.5% versus 86.7% in group II (P <.05). In conclusion, Femoral AVF grafts have been condemned because of the unacceptable high rate of septic complications. FVT obviates the need for a graft and has fewer infectious problems and better patency rates.
The rate of patients with exhausted upper extremity arteriovenous fistula (AVF) sites who have lost all chances for a conventional upper extremity AVF has been increasing in line with the general increase in the hemodialysis patient population. In this prospective study, we report the early and late follow-up results of "exotic" AVFs in which central veins are used for the outflow. Patients having no chance for an upper extremity AVF based on previous catheterization, surgical AVF history, detailed physical examination, and radiological assessment, were included in the study. Between June 1999 and January 2003, 27 central AVFs were created with a 6 mm synthetic vascular graft in 26 patients. The inflow artery was the proximal axillary artery in all except one. All but one operation was done by the same surgeon. The outflow vein was the internal jugular vein in 16 and infraclavicular axillary vein in 11 cases. One-year primary and secondary graft patency rates were 33.33 +/- 10.49 and 57.06 +/- 11.29, respectively. The early complications were facial edema and hemiparesis, both of which resolved spontaneously. The only late complication, pseudoaneursym, was treated by a graft interposition. In selected patients who have no suitable upper extremity vessels for an AVF, the central veins may be used with an acceptable success rate. Another advantage of this procedure is the avoidance of undesired femoral interventions; sometimes it may be the only opportunity and lifesaving for the patient.
Explore the source record for details and available documents.
BACKGROUND: Carotid artery intima-media thickness (CIMT) has been used as a marker of atherosclerosis. An insertion/deletion (I/D) polymorphism of the angiotensin-converting enzyme (ACE) gene is associated with various cardiovascular diseases. This study is aimed at evaluating early atherosclerotic involvement of carotid vessels and the relation to known risk factors and ACE gene I/D in hemodialysis (HD) patients. METHODS: We measured CIMT using high-resolution B-mode ultrasonography in 51 non-diabetic HD patients and in 70 age- and sex-matched healthy controls, and evaluated the factors influencing CIMT. An I/D polymorphism in intron 16 of the gene coding for ACE was analysed by polymerase chain reaction. RESULTS: The mean CIMT was significantly higher in HD patients than in healthy subjects (p<0.0001). In multiple regression analysis, independent risk factors for increased CIMT in HD patients were predialysis systolic blood pressure (p<0.001) and ACE D allele (p<0.01). CONCLUSIONS: The present data suggest that CIMT is enlarged in HD patients. The ACE gene seems to be a candidate for influencing the CIMT and might therefore be involved in an HD patient's predisposition to the development of atherosclerosis.
Acute renal failure secondary to bilateral ureteral obstruction in pregnancy is rare. We describe a case of acute renal failure secondary to bilateral ureteral obstruction. A 27 year-old woman at 35 weeks' gestation was referred to our hospital with a diagnosis of acute renal failure. The patient had been well until four days earlier, when she developed an abrupt anuria. She had been administrated excessive amounts of fluids, and unresponsive to parenteral furosemide. She had mild pitting oedema and an S3 gallop with crackles in the lungs. The uterus was enlarged to the expected size with a cervical dilatation of 2 cm in diameter. Her serum creatinine level was 7.0 mg/dl. Renal ultrasound showed bilateral hydronephrosis of severe degree. The patient was immediately hemodialyzed for advanced renal failure with hypervolemia, and a healthy infant was born at the third hour of the HD session without any complication. On the next day, her urine volume was 200 ml/day and serum creatinine level was 6.8 mg/dl. For this reason, the patient underwent cystoscopy and ureteral stents were inserted bilaterally. There was no evidence of ureteral stones or obstructive lesions. After the stenting, the urine volume increased and serum creatinine was decreased gradually to normal level at the seventh day of postpartum. Two weeks later ureteral stents were removed and both infant and patient were completely healthy. To the best of our knowledge, this is the first case of delivery of an infant during a haemodialysis session.
The aim of this study was to investigate the relationship between the type of formula consumed and the stool characteristics and gastrointestinal symptoms of preterm infants prospectively. Seventy-five preterm infants weighing < 2000 g in our neonatal intensive care unit (NICU) were investigated. Four groups of 15 each were fed one of four commercial formula preparations (Prematil, Neonatal, Humana-0 and S-26) and the fifth group was breast-fed in a prospective, randomized, double-blind study. The stool characteristics and gastrointestinal problems were recorded daily from the first day till the time they were discharged by the nurses of NICU. No significant differences of daily weight gain was observed between the groups. No significant difference was observed in daily frequency of stool, distention, vomiting and gas passage between the groups during the enteral + parenteral and full-enteral nutrition periods. The infants fed by Prematil during the enteral + parenteral nutrition period had a higher percentage of hard stool occurrence than infants receiving Humana-0 and breast milk. In the full-enteral nutrition period, infants receiving Prematil had a higher percentage of hard stool occurrence than all the other groups, whereas breast-fed infants had a lower percentage of hard stool than all the other groups. While the group fed with Humana-0 had a higher percentage of green stool occurrence in the enteral + parenteral nutrition period, no significant difference was observed in the full-enteral nutrition period. In the enteral + parenteral nutrition period no additional therapy affected stool characteristics or the gastrointestinal system except in the case of the infant receiving phototherapy for whom the daily number of detections was significantly high. In this study, it was shown that the color and consistency of stool in preterm infant differs according to the preterm infant formulas, but no differences were observed in the frequency of defecation or in gastrointestinal system problems. When the infant formulas were compared with breast milk, it was shown that they cause a higher percentage of hard stool occurrence. An increased number of formula feedings are necessary to obtain a similar daily weight gain, but the color and the frequency of the stool and the gastrointestinal system problems were similar for breast-fed and formula-fed infants.
Explore the source record for details and available documents.
The reactions of 3-alkyl(aryl)-4-phenylamino-4,5-dihydro-1H-1,2,4-triazol-5-ones with appropriate alkyl halides via sodio derivatives were studied and the corresponding 1-alkyl-3-alkyl(aryl)-4-phenylamino-4,5-dihydro-1H-1,2,4-traizol-5 -ones were synthesized. Next, the new compounds were tested for their in vitro antimicrobial activities.