The Effect of Peer Teaching on the Quality of Report Writing Based on the Nursing Process.

Background: Considering the importance of report writing and its problems, different teaching methods can be used to improve nurses' knowledge and performance, among which is peer teaching. This study aimed to determine the effect of peer teaching on the quality of report writing based on the nursing process. Materials and Methods: This quasi-experimental study examined 60 nurses working in the surgical and cardiac wards of Razavi Hospital in Mashhad during 2019. These wards randomly assigned to intervention (n = 30) and control (n = 30) groups. For 2 weeks, report writing teaching was implemented for the intervention group based on the nursing process through peer teaching. The control group routinely performed report writing. At the beginning and end of the study, we reviewed nursing reports of both groups using a valid and reliable checklist. Data were analyzed using two-way analysis of variance with repeated-measures analysis of variance. Results: Before the intervention, there was no significant difference between the two groups in terms of scores of report writing quality in structure, content dimensions, and the total scores (p > 0.05). After the intervention, the mean score changes were significantly higher in the structure (Mean Difference (MD) = 4.99, 95%CI: 1. 26-8.72, p < 0.010), content (MD = 8.11, 95%CI: 4.91-11.31, p < 0.001), and the total quality of report writing (MD = 7.54, CI: 4.56-10.53, p < 0.010) in the intervention group than the control group. Conclusions: Peer teaching improved the nurses' quality of report writing. The teaching planners are recommended to use this method to train nursing staff.

Chitosan hydrogels cross-linked with tris(2-(2-formylphenoxy)ethyl)amine: Swelling and drug delivery.

Tris(2-(2-formylphenoxy)ethyl)amine was designed and synthesized by reaction of salicylaldehyde with tris(2-chloroethyl)amine hydrochloride and evaluated as a new multi-functional cross-linker for preparation of new pH- and thermo-responsive chitosan hydrogels through formation of covalent Schiff-base linkage. The structure and properties of the hydrogels were characterized by FT-IR, 1H NMR and scanning electron microscopy (SEM). The swelling behavior of prepared hydrogels at different pHs and temperatures was investigated. Also, in vitro controlled release behavior of the metronidazole model drug was studied with prepared hydrogels. The release profiles of metronidazole from the hydrogels were determined by UV-Vis absorption measurement. The results showed that the new hydrogels exhibit a pH and temperature-responsive swelling ratio. Also, the pH and temperature were found to strongly influence the drug release behavior of these swollen polymers. Due to the concurrent rapid and significant stimuli-response, these smart hydrogels prepared from chitosan as a natural polymer may expand the scope of hydrogel applications in various fields of research such as targeted (cellular or tissue) delivery of drugs. In addition, these new hydrogels can be used to improve bioavailability, sustain release of drugs or solubilize drugs for systemic delivery.

Mechanically Robust 3D Nanostructure Chitosan-Based Hydrogels with Autonomic Self-Healing Properties.

Fabrication of hydrogels based on chitosan (CS) with superb self-healing behavior and high mechanical and electrical properties has become a challenging and fascinating topic. Most of the conventional hydrogels lack these properties at the same time. Our objectives in this research were to synthesize, characterize, and evaluate the general properties of chitosan covalently cross-linked with zinc phthalocyanine tetra-aldehyde (ZnPcTa) framework. Our hope was to access an unprecedented self-healable three-dimensional (3D) nanostructure that would harvest the superior mechanical and electrical properties associated with chitosan. The properties of cross-linker such as the structure, steric effect, and rigidity of the molecule played important roles in determining the microstructure and properties of the resulting hydrogels. The tetra-functionalized phthalocyanines favor a dynamic Schiff-base linkage with chitosan to form a 3D porous nanostructure. Based on this strategy, the self-healing ability, as demonstrated by rheological recovery and macroscopic and microscopic observations, is introduced through dynamic covalent Schiff-base linkage between NH2 groups in CS and benzaldehyde groups at cross-linker ends. The hydrogel was characterized using FT-IR, NMR, UV/vis, and rheological measurements. In addition, cryogenic scanning electron microscopy (cryo-SEM) was employed as a technique to visualize the internal morphology of the hydrogels. Study of the surface morphology of the hydrogel showed a 3D porous nanostructure with uniform morphology. Furthermore, incorporating the conductive nanofillers, such as carbon nanotubes (CNTs), into the structure can modulate the mechanical and electrical properties of the obtained hydrogels. Interestingly, these hydrogel nanocomposites proved to have very good film-forming properties, high modulus and strength, acceptable electrical conductivity, and excellent self-healing properties at neutral pH. Such properties can be finely tuned through variation of the cross-linker and CNT concentration, and as a result these structures are promising candidates for potential applications in various fields of research.