Abstract 3348: Top 10 living with and beyond cancer research priorities

More and more people are living with the consequences of cancer and its treatment (living with and beyond cancer), yet the level of relevant research is low compared to other types of cancer research in the UK. NCRI aims to increase the level of research in this area and to ultimately improve the lives of those affected by cancer. Undefined research priorities in this broad area has been a barrier to research. The 2015 NHS Independent Cancer Taskforce report also recommends defining research priorities and to enable this research to happen. To address this barrier the NCRI has undertaken a James Lind Alliance Priority Setting Partnership (PSP) to identify priorities that matter most to people affected by cancer and the health and social care professionals.A PSP consists of patients and carers, health and social care professionals. PSPs have several stages and begin with a UK-wide survey to gather questions about uncertainties in living with and beyond cancer. Once the results were analysed, an interim exercise takes place to further prioritise the uncertainties. The last stage is a final workshop where partners debate and finally arrive at a top 10 list of shared uncertainties.The living with and beyond cancer PSP received 3500 questions submitted by people affected by cancer and healthcare professionals. Through a 18-month established rigorous process, the questions are prioritised down to the Top 10 living with and beyond cancer priorities for research in June 2018. This is the first time that clear research priorities have been identified in this area. They are the most impactful research questions that will help improve the lives of people affected by cancer. The Top 10 uncertainties will be publicised widely to ensure that researchers and those who fund research really understand what matters to people affected by cancer. The top uncertainties will be promoted to many research organizations and relevant funders in the UK. We anticipate they will directly influence future research.

Citation Format: Feng Li, Adrienne Morgan, Angela McCullagh, Anne Johnson, Ceinwen Giles, Diana Greenfield, Graeme Crawford, Jacqui Gath, Jane Lyons, Jervoise Andreyev, Jonathan Tobutt, Julia Tugwell, Karen Robb, Laura Cove-Smith, Lindsey Bennister, Natalie Doyle, Nicolas Lee, Rebecca Nash, Richard Simcock, Richard Stephens, Sabine Best, Susan Moug, Kristina Staley, Sandra Regan, Patricia Ellis, Stuart Griffiths, Ian Lewis. Top 10 living with and beyond cancer research priorities [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2019; 2019 Mar 29-Apr 3; Atlanta, GA. Philadelphia (PA): AACR; Cancer Res 2019;79(13 Suppl):Abstract nr 3348.

Orthopaedic Residents' Interpretation of Point-of-Care Assessment of Distal Radial Fractures with Use of Pocket-Sized Ultrasound Devices

BACKGROUND

Musculoskeletal ultrasonography is a tool that is being used increasingly. However, the interpretation of ultrasound images of fractures is not incorporated into orthopaedic training programs. This paper presents the results of an initiative to train orthopaedic surgery residents to accurately interpret images of distal radial fractures in adults and to assess their confidence levels and attitudes regarding their future use of ultrasonography.

METHODS

Six junior residents were given a pretest with 100 distal radial images that had been made with a pocket-sized ultrasound device; they were asked to determine fracture versus nonfracture cases (50 cases) as well as reduced fracture versus nonreduced fracture cases (50 cases). Following the pretest, residents completed a 30-minute tutorial (didactic and practical) on distal radial ultrasonography. The residents then completed a period of self-practice during 2 separate trauma rotations (a total of 14 to 16 weeks in a single academic year). Following completion of their second trauma rotation, the residents completed a posttest. Comfort level using a pocket-sized ultrasound device also was assessed during pretesting and posttesting.

RESULTS

The median number of days from the pretest to the posttest was 212 days (range, 175 to 225 days). Residents demonstrated an overall improvement in positive predictive value (PPV) of identifying a fracture from the pretest (86.0%; range, 77.5% to 93.1%) to the posttest (93.5%; range, 91.4% to 94.2%). The overall negative predictive value (NPV) for identifying a fracture also improved from the pretest (69.4%; range, 60.0% to 76.9%) to the posttest (81.0%; range, 76.4% to 86.7%; p = 0.04). The overall PPV for detecting a reduced fracture improved from 67.1% with the pretest (range, 54.2% to 82.4%) to 88.9% with the posttest (range, 83.3% to 94.1%; p = 0.04). The comfort level with using the ultrasound device also increased between pretesting and posttesting, and the residents felt that ultrasonography would be useful in the care of distal radial fractures.

CONCLUSIONS

After a focused training session and a period of self-practice, orthopaedic residents improved their interpretation of ultrasound images and their comfort level using pocket-sized ultrasound devices with adult patients with distal radial fractures. Residents felt that a pocket-sized ultrasound device was useful for fracture diagnosis and evaluation of reduction.

The mechanical response of the mouse cervix to tensile cyclic loading in term and preterm pregnancy

A well-timed modification of both the collagen and elastic fiber network in the cervix during pregnancy accompanies the evolution of tissue mechanical parameters that are key to a successful pregnancy. Understanding of the cervical mechanical behaviour along normal and abnormal pregnancy is crucial to define the molecular events that regulate remodeling in term and preterm birth (PTB). In this study, we measured the mechanical response of mouse cervical tissue to a history of cyclic loading and quantified the tissue's ability to recover from small and large deformations. Assessments were made in nonpregnant, pregnant (gestation days 6, 12, 15 and 18) and mouse models of infection mediated PTB treated with lipopolysaccharide on gestation d15 (LPS treated) and hormone withdrawal mediated PTB on gestation d15 (RU486 treated). The current study uncovers the contributions of collagen and elastic fiber networks to the progressive change in mechanical function of the cervix through pregnancy. Premature cervical remodeling induced on gestation day 15 in the LPS infection model is characterized by distinct mechanical properties that are similar but not identical to mechanical properties at term ripening on day 18. Remodeling in the LPS infection model results in a weaker cervix, unable to withstand high loads. In contrast, the RU486 preterm model resembles the cyclic mechanical behaviour seen for term d18 cervix, where the extremely compliant tissue is able to withstand multiple cycles under large deformations without breaking. The distinct material responses to load-unload cycles in the two PTB models matches the differing microstructural changes in collagen and elastic fibers in these two models of preterm birth. Improved understanding of the impact of microstructural changes to mechanical performance of the cervix will provide insights to aid in the development of therapies for prevention of preterm birth.

STATEMENT OF SIGNIFICANCE

Preterm Birth (PTB) still represents a serious challenge to be overcome, considering its implications on infant mortality and lifelong health consequences. While the causes and etiologies of PTB are diverse and yet to be fully elucidated, a common pathway leading to a preterm delivery is premature cervical remodeling. Throughout pregnancy, the cervix remodels through changes of its microstructure, thus altering its mechanical properties. An appropriate timing for these transformations is critical for a healthy pregnancy and avoidance of PTB. Hence, this study aims at understanding how the mechanical function of the cervix evolves during a normal and preterm pregnancy. By performing cyclic mechanical testing on cervix samples from animal models, we assess the cervix's ability to recover from moderate and severe loading. The developed methodology links mechanical parameters to specific microstructural components. This work identifies a distinct biomechanical signature associated with inflammation mediated PTB that differs from PTB induced by hormone withdrawal and from normal term remodeling.