Radiotherapy-specific interprofessional learning through simulation

IntroductionInterprofessional learning (IPL) is a vital aspect of training in radiation oncology professions, yet is rarely delivered to those professionals who work most closely together in clinical practice. Scenario-based learning using simulation facilities provides a unique opportunity to facilitate this learning and this project aimed to determine the impact and value of this initiative.MethodsSmall groups comprising post-graduate diploma pre-registration therapeutic radiographers, medical physics trainees and radiation oncology registrars were challenged with 4 plausible and challenging radiotherapy scenarios within an academic simulation centre. Pre- and post-event completion of the “Readiness for Interprofessional Learning Scale” measured impact and a Likert-style survey gathered feedback from participants.ResultsThe session increased participants' teamwork and collaboration skills as well as strengthening professional identities. Participants reported high levels of enjoyment related to collaborative working, communication and observing other professionals deploying their technical skills and specialist knowledge.ConclusionAlthough beneficial, simulated scenarios offering equal opportunities for engagement across the professions are challenging to plan and timetabling issues between the 3 groups present significant difficulties. The safe environment and unique opportunity for these groups to learn together was particularly well received and future oncology-specific simulated scenario sessions are planned with larger cohorts.Implications for practiceSimulated scenario training can be used to improve team working across the radiotherapy interprofessional team and may have wider use in other specialist interdisciplinary team development.     

In-vitro/in-vivo correlation of pulsatile drug release from press-coated tablet formulations: a pharmacoscintigraphic study in the beagle dog.

The aim of the current study was to investigate the in-vitro and in-vivo performance of a press-coated tablet (PCT) intended for time delayed drug release, consisting of a rapidly disintegrating theophylline core tablet, press-coated with barrier granules containing glyceryl behenate (GB) and low-substituted hydroxypropylcellulose (L-HPC). The PCTs showed pulsatile release with a lag time dependent upon the GB and L-HPC composition of the barrier layer. In-vivo gamma-scintigraphic studies were carried out for PCTs containing GB:L-HPC at 65:35 w/w and 75:25 w/w in the barrier layer in four beagle dogs, in either the fed or fasted state. The in-vivo lag time in both the fed and fasted states did not differ significantly (p>0.05) from the in-vitro lag time. Additionally, no significant difference (p<0.05) between in-vivo fed and fasted disintegration times was observed, demonstrating that in-vivo performance of the PCT was not influenced by the presence or absence of food in the gastrointestinal tract. A distinct lag time was obtained prior to the appearance of drug in plasma and correlated (R2=0.98) with disintegration time observed from scintigraphic images. However, following disintegration, no difference in pharmacokinetic parameters (AUC(0-6 dis), K(el), Cmax) was observed. The current study highlighted the potential use of these formulations for chronopharmaceutical drug delivery.     

Interactions between colour and luminance contrast in the perception of motion

It has been demonstrated widely that at isoluminance moving chromatic stimuli are seen to be stationary or moving more slowly than their luminance counterparts. We have examined the effect on perceived velocity of adding luminance contrast to an isoluminant chromatic stimulus. We show that moving luminance contrast 'captures' colour so that a combined colour and luminance stimulus is seen moving as a unified percept. However, in the presence of colour contrast, significantly higher levels of luminance contrast are required to achieve a veridical velocity than for monochromatic stimuli with only luminance contrast. We show that this interactive effect between colour and luminance contrast cannot be fully explained by a threshold masking of luminance by colour contrast. The effect suggests that a breakdown in the veridical perception of velocity should be expected for colours with a wide range of associated luminance contrasts and not just for those at the point of isoluminance.     

Studies on antifungal agents. In vitro activity of novel cis-5-alkoxy (or acyloxy)alkyl-3-phenyl-3-(1H-imidazol-1-ylmethyl)-2-methylisoxazolidine derivatives

The synthesis and in vitro antifungal activity of a novel series of cis-5-alkoxy(or acyloxy)alkyl-3-phenyl-3-(1H-imidazol-1-ylmethyl)- 2-methylisoxazolidine derivatives (6a-n) are described. The 5-[(4-chlorobenzyloxy)methyl] analogue 6h and the two 5-acyloxymethyl derivatives 6k,l demonstrated the best overall potency. Against Candida stellatoidea, the minimum inhibitory concentrations (MIC's) for 6h,k,l ranged between 0.7 and 2.0 micrograms/ml. The corresponding value for the standard drug ketoconazole was 7-20 micrograms/ml.     

Fetal pancreas transplantation in miniature swine. IV. Suppression of DTH and MLR responses by treatment with ultraviolet light-irradiated peripheral blood lymphocytes

Irradiation of peripheral blood lymphocytes of miniature swine with ultraviolet light prevented them from initiating proliferative responses in allogeneic mixed lymphocyte reactions and also reduced IL-2 production in these MLRs. When pigs were injected in a series of 4-5 weekly transfusions with UV-irradiated allogeneic PBL differing at the MHC, PBL of recipient pigs progressively responded less strongly to donor PBL in MLRs over the treatment period. These pigs also gave negligible delayed-type hypersensitivity responses to donor PBL at the end of the treatment period. Of the seven UV-irradiated PBL-treated pigs, four produced no antidonor PBL antibody and three produced antibody. Serum from the three antibody-producing pigs also suppressed MLRs of unrelated PBL. By contrast, pigs that received a series of injections of untreated allogeneic PBL gave strong DTH responses to donor PBL and heightened proliferation in MLRs with donor PBL, and all produced antidonor PBL antibody.