ABSTRACT
PURPOSE: This study was conducted to determine the achievement orientation of nursing and midwifery students and to examine some factors that may affect their achievement orientation. MATERIAL/METHODS: The descriptive sample of this research was created by 209 first-year students voluntarily attending and studying in the Department of Nursing and Midwifery at the Faculty of Health Sciences of a public university in Turkey. The data were collected with "Student Presentation Form" and "2x2 Achievement Orientation Scale". Mann Whitney-U test and Kruskal Wallis test were used with frequency, percentage, arithmetic mean and standard deviation in evaluating the data. RESULTS: The students were found to have 3.39±0.54 in the learning-approach orientation sub-dimension, 3.27±0.75 in the learning-avoidance orientation sub-dimension, 2.73±0.76 in the performance-approach orientation sub-dimension and 2.74±0.74 points in the performance-avoidance orientation sub-dimension. A significant difference was found between the students' gender, their reasons for choosing a career, and the factors that led them to succeed and the mean of the learning-approach orientation score. On the other hand, there was no statistically significant difference between the achievement orientation of the students and the variables such as age, high school type they graduated, and department preference order. CONCLUSIONS: According to the results of the study, it was seen that nursing and midwifery students have predominantly learning-approach orientation. Moreover, it was determined that female students, who selected their profession because of their interest and who expressed that the factor motivate themselves for the achievement is themselves, had higher learning orientation.
ABSTRACT
OBJECTIVES: The aim of the study was to assess whether there was any relation between age, gender and body mass index (BMI) and nodal forms and vascular type in healthy Turkish adults. STUDY DESIGN: Three neck areas in 25 wholesome patients who were aged from 21 to 58 years, were assessed by gray-scale and color doppler ultrasonography. Ultrasonographic examinations were performed using an ALOKA Prosound Alpha 6 (Hitachi Aloka Medical Systems, Tokyo, Japan) and the images were obtained with a 7.2 MHz linear array transducer. Hajek's categorization of cervical lymph nodes for sonographic analysis was used. The ultrasonographic characteristics like size, shape, short axis/long axis ratio (S/L), hilum were evaluated. Ultrasonographic examinations of upper cervical, submandibular and submental lymph nodes were carried out and recorded. RESULTS: The mean age of patients was 31.84±12.80 years. The ratios of lymph nodes with avascular pattern were 96% for the upper cervical lymph area, 92% for the submandibular area and 96% for the submental area. The lowest and highest ratios of short to long axis diameter (S/L) were calculated as 0.18 and 0.66 in all areas. Most normal nodes in the study were oval with an S/L ratio of less than 0.5. CONCLUSION: Normal cervical lymph nodes are oval, with an unsharp border and an echogenic hilum but no relation between the age, gender and BMI. Also ultrasonography is an applicable imaging modality for the examination of cervical lymph nodes. However, the deficiency in the number of patients might not allow to generalise our findings to the general populations.
ABSTRACT
Cytidine 5'-diphosphocholine (CDP-choline) is an endogenously synthesized mononucleotide which exerts a variety of physiological effects by altering central cholinergic transmission. Administered intracerebroventricularly (i.c.v.) or intravenously, it reverses haemorrhagic hypotension in rats, apparently by the activation of central cholinergic receptors. The study was undertaken to investigate the involvement of the central histaminergic system in CDP-choline-mediated reversal of haemorrhagic hypotension. Experiments were carried out in male ketamine/xylazine-anaesthetised Wistar rats subjected to haemorrhagic hypotension of 20-26 mmHg. CDP-choline (2 micromol; i.c.v.) administered at 5 min of critical hypotension produced a long-lasting pressor effect with increases in mean arterial pressure (MAP), heart rate (HR), and renal, hindquarters and mesenteric blood flows, resulting in a 100% survival at 2 h. The action was accompanied by approximately a 26% increase in extracellular histamine concentration at the posterior hypothalamus, as measured by microdialysis. Cardiovascular effects mediated by CDP-choline were almost completely blocked by pretreatment with H(1) receptor antagonist chlorpheniramine (50 nmol; i.c.v.), but not with H(2) receptor blocker ranitidine (25 nmol; icv) or H(3)/H(4) receptor antagonist thioperamide (50 nmol; i.c.v.). In conclusion, the present results show that he central histaminergic system, through the activation of H(1) histaminergic receptors, is involved in CDP-choline-induced resuscitating effect in haemorrhage-shocked rats.
