Biomedical subjects

Nihal Ozkayar

Publications and source records attributed to Nihal Ozkayar.

5 recordsLinked to original sources

PubMed2006

Falls and the elderly: is there any difference in the developing world? A cross-sectional study from Turkey.

The phenomenon of falls is not well studied in developing world. However, being aware of possible correlates for falls specific to different populations and trying to eliminate these factors is very important to prevent falls. This study investigated occurrence and correlates of falls among elderly in a developing country, Turkey. A total of 2322 patients aged 65 years and over presented to outpatient clinics of a reference hospital were included in this cross-sectional study. All patients had a complete comprehensive geriatric assessment and questioned for fall history. Correlates for falls were analyzed by using logistic regression. The mean age of participants was 71.8 years; 63.5% were female and 28.5% were found to have fallen within one year. Female sex, visual problems, auditory problems, use of mobility aids, mobility problems and depression were the only independent correlates for falls. Although the cross-sectional design of this study may not prove the causal role of the risk indicators, the size of the study group as well as the large number of possible correlates examined enriches the study. The results from this cross-sectional study form a basis for further prospective study on falls in the Turkish elderly population.

Accidental Falls↗

PubMed2006

Is congenital hepatic fibrosis a pure liver disease?

OBJECTIVES: An association between congenital hepatic fibrosis (CHF) and several different conditions is being increasingly recognized. We aimed to investigate, prospectively, these associated disorders and the clinical consequences for patients with CHF. MATERIALS AND METHODS: CHF was diagnosed using liver biopsy, abdominal ultrasound (US), Doppler US, upper endoscopy, and abdominal computed tomography (CT) in 19 patients (13 women, 6 men). CT portography and splenoportography with digital subtraction angiography were performed if indicated. Endoscopic retrograde cholangiopancreatography (ERCP) was performed to investigate the extent of portal vein involvement of the common bile duct if it existed, to remove a stone located in the common bile duct when documented, and to confirm the diagnosis of Caroli's syndrome. Cranial MRI was done when clinical findings suggested brain involvement. RESULTS: The mean age of the patients was 29.47+/-12.06, ranging from 13 to 57. CHF-associated diseases were Caroli's syndrome, polycystic kidney disease, cavernous transformation of the portal vein, Joubert's syndrome, von Meyenburg complex, polydactyly, medullary sponge kidney, and pancreatic duct atrophy. In two cases, cholangiocarcinoma had developed. There was only one case with pure CHF. Portosystemic shunt, TIPS, or splenectomy were performed in some cases to control bleeding from esophageal varices. Papillotomy and stone extraction from the common bile duct were performed in four patients with Caroli's syndrome complicated by cholangitis. Three patients died of complications of CHF. Two patients with Caroli's syndrome underwent liver transplantation. CONCLUSION: In this prospective study, it seems that CHF is not a pure liver disease but rather a multiorgan disorder involving the brain, portal vein, kidneys, and bile ducts. In most cases, the clinical picture includes other organ involvement, rather than purely the liver parenchyma.

Adolescent↗

PubMed2006

Elderly patient with delirium after myocardial infarction.

Delirium is a transient global disorder of cognition. Almost any medical illness or medication can cause delirium. Here, we report a 71-year-old male who presented to the emergency department with a sudden change in mental status, which later resolved. An electrocardiogram was consistent with acute myocardial infarction. The patient later developed symptoms of delirium, and haloperidol was administered. The symptoms did not resolve, and risperidone was initiated instead. The patient subsequently became hypotensive, and treatment was again changed to olanzapine. He returned to full consciousness with olanzapine treatment. When the potential hypotensive effects of haloperidol and risperidone are taken into consideration, in patients with high cardiac risk, olanzapine may provide a better option for the treatment of delirium.

Aged↗

PubMed2005

Pathogenic antibody removal using magnetically stabilized fluidized bed.

Magnetic poly(2-hydroxyethyl methacrylate) (mPHEMA) beads were used in the removal of anti-dsDNA antibodies from systemic lupus erythematosus (SLE) patient plasma in a magnetically stabilized fluidized bed. mPHEMA beads, in the size range of 80-120 microm, were produced by suspension technique. Then, DNA was immobilized onto mPHEMA beads by carbodiimide activation. Magnetic beads were contacted with blood in in vitro systems. Loss of blood cells and clotting times were followed. mPHEMA beads were characterized by scanning electron microscopy (SEM). Important results obtained in this study are as follows: the mPHEMA beads have a spherical shape and porous structure. Loss of cells in the blood contacting with mPHEMA/DNA was negligible. The anti-dsDNA adsorption capacity decreased significantly with the increase of the flow-rate. With increasing anti-dsDNA antibody concentration, the amount of antibody adsorbed per unit mass increased, then reached saturation. Maximum anti-dsDNA antibody adsorption capacity was found to be 97.8 mg/g. Pathogenic antibody molecules could be repeatedly adsorbed and desorbed with these magnetic beads without noticeable loss in their antibody adsorption capacity. Because of the good blood-compatibility, mPHEMA is hopeful for the treatment of SLE by magnetically stabilized fluidized bed systems in the future.

Antibodies, Antinuclear↗

PubMed2005

No alteration in the PFA-100 in vitro bleeding time induced by the Ginkgo biloba special extract, EGb 761, in elderly patients with mild cognitive impairment.

EGb 761 is widely used in the management of mild cognitive impairment in the elderly population. Elucidation of the effects of EGb 761 on primary haemostasis via PFA-100 could represent an important step for better understanding of the haemostatic safety of EGb 761. The purpose of this prospective study is to assess the effects of Ginkgo biloba special extract, EGb 761, on PFA-100 in vitro bleeding time in elderly patients with mild cognitive impairment. A total of 40 elderly patients aged 65-79 years who were referred for geriatric assessment and who were diagnosed as having mild cognitive impairment were included. Patients were started on 80 mg EGb-761 three times daily. The complete set of PFA-100 in vitro bleeding time and coagulation parameters including prothrombin time, activated partial thromboplastin time and International Normalized Ratio were assessed before and on the seventh day of treatment with EGb 761. There was no statistically significant prolongation in PFA-100 in vitro bleeding time or coagulation parameters in patients receiving EGb 761 after 7 days. The data about the safety of EGb 761 from the point of primary haemostasis in our elderly patient population with mild cognitive impairment casts hope for the future management of this 'difficult-to-treat' population with the promising Ginkgo extracts.

Aged↗