Stressors in open-heart surgery patients: A qualitative study.

BACKGROUND: Open-heart surgery is a stressful experience for the patients and their families. From the moment that patients are told they must undergo surgery until discharge, they experience different degrees of worry and nervousness. This study was conducted with the aim of identifying stress factors in heart surgery patients. METHODS: This study was performed using a qualitative method on 21 participants (14 patients and 7 caregivers). The research environment was open-heart surgery wards of two educational hospitals in Ahwaz (south of Iran) in 2017. The participants were selected through purposive sampling. The data were collected through semi-structured interviews, and then, analyzed using the qualitative approach of content analysis proposed by Graneheim and Lundmnan (2004). RESULTS: The 5 themes of "physical stressors", "self-care stressors", "psychological stressors", "religious stressors", and "hospital stressors" were obtained. These themes were the result of the patients' experiences and dimensions of patients' perceptions regarding stressors in open-heart surgery. CONCLUSION: Stress in patients undergoing open-heart surgery is a contextual and relative concept and a subjective experience, which is experienced as a sense of worry. Identifying and clarifying stressors in open-heart surgery patients for nurses is vital, like a key for improving care quality. Nursing managers in clinical practice can also benefit from these findings regarding heart surgery in improving the care quality and professional performance of nurses.

A comparative study of the effect of triage training by role-playing and educational video on the knowledge and performance of emergency medical service staffs in Iran.

INTRODUCTION: Educating emergency medical staffs in triage skills is an important aspect of disaster preparedness. The aim of the study was to compare the effect of role-playing and educational video presentation on the learning and performance of the emergency medical service staffs in Khozestan, Iran METHODS: A total of 144 emergency technicians were randomly classified into two groups. A researcher trained the first group using an educational video method and the second group with a role-playing method. Data were collected before, immediately, and 15 days after training using a questionnaire covering the three domains of demographic information, triage knowledge, and triage performance. The data were analyzed using defined knowledge and performance parameters. RESULTS: There was no significant difference between the two training methods on performance and immediate knowledge (P = .2), lasting knowledge (P=.05) and immediate performance (P = .35), but there was a statistical advantage for the role-playing method on lasting performance (P = .02). CONCLUSION: The two educational methods equally increase knowledge and performance, but the role-playing method may have a more desirable and lasting effect on performance.

Podophyllotoxin from suspension culture of Linum album.

Callus and suspension cultures of Linum album as an Iranian species for synthesis of aryltetralin lactone were used. After cultivation period; we can isolate and characterize podophyllotoxin as glycosides compounds. Maximal product yield is 0.5% of the dry weight in dark grown cultures.

A novel type of membranes based on cholesteryl phosphate.

Mixtures of the rigid amphiphile disodium cholesteryl phosphate (DCP) with the non-phosphorylated diacyl amphiphile dimyristoylglycerol (DMG) give self-organized systems in a wide range of pH, as demonstrated by differential microcalorimetry. These systems can be closed bilayer vesicles, as shown by optical microscopy (Nomarski and confocal). Neither DMG nor DCP, taken alone, give vesicles in these conditions but 10% DMG is enough to lead to the formation of vesicles from pH 5.8 to 9.3. These novel self-organized systems are akin to the classical eucaryotic ones, built on a phosphorylated diacylglycerol and free cholesterol (or analogues), the only difference being the site of the phosphate head-group.