The influence of hospital and home environments on physical activity and sedentary behaviour: Perceptions of people recovering from fractures.

BACKGROUND: A lack of evidence exists contrasting the factors that influence physical activity and sedentary behaviour in both hospital and home settings before and after discharge from acute hospitalisation for fractures. OBJECTIVE: To describe and compare perceptions of environmental influences on physical activity in hospital and home settings in people recovering from fractures. METHOD: Semi-structured interviews were conducted with patients hospitalised following fractures (hip fracture or multi-trauma), exploring the barriers and enablers to physical activity within hospital and home settings. Interviews were conducted within two weeks of hospital discharge, audio recorded and transcribed prior to thematic analysis via a framework approach. RESULTS: Between December 2022 and May 2023, 12 semi-structured interviews were undertaken with an equal number of participants who sustained an isolated hip fracture or multi-trauma. The median (IQR) age of participants was 60 (52-68) years, with half being male, and the majority sustaining their injuries via transport crashes. Three main themes that influenced physical activity behaviours in hospital and home settings were: having the opportunity, having a reason, and having support and assistance to be active. CONCLUSION: During the period of reduced physical capability following fracture, patients need to be provided with opportunities and motivation to be active, particularly within the hospital setting. Findings from this study will assist clinicians to better support people recovering from fractures via greater engagement in physical activity within hospital and home settings.

Validity of the activPAL and ActiGraph for measuring sitting time and steps in hospitalised orthopaedic patients with altered weight bearing.

PURPOSE: To determine the criterion validity of the activPAL and ActiGraph for measuring steps and sitting/sedentary time, compared to observation, in people hospitalised following orthopaedic lower limb injury who were weight bearing (WB) (i.e., walking) or non-weight bearing (NWB) (i.e., hopping). MATERIALS AND METHODS: Participants wore an activPAL and ActiGraph on the hip/thigh/unaffected (UA)/affected ankle (AA) while completing bouts of walking and sitting. Lin's concordance correlation coefficient, Bland-Altman methods, and ratio of agreement were used to compare device-measured to observed (videoed) step count, sitting/sedentary time. RESULTS: In 42 participants, the ActiGraph demonstrated excellent concordance with the observed step count when worn on the ankle (LCC 0.91-0.92) compared to the hip (LCC 0.56) in participants that were WB. The ActiGraph AA achieved the highest concordance (LCC 0.71) with observed steps in participants NWB. The activPAL had poor concordance with observed steps, particularly at slow gait speeds, in participants that were WB (LCC 0.38-0.46), however was less influenced by gait speed and had good concordance in NWB participants (LCC 0.52-0.69). The activPAL (LCC 0.79-0.88) and ActiGraph UA (LCC 0.94) showed excellent concordance with observed sitting and sedentary time, respectively. CONCLUSIONS: The ActiGraph worn at the ankle provided the most valid measure of steps in people who are WB and NWB following orthopaedic injury, while the activPAL was best for measuring sitting time.Implications for rehabilitationTo accurately measure both steps and sitting time in people with lower limb orthopaedic injuries, a combination of activity monitors should be used (i.e., ActiGraph for steps, activPAL for sitting time).The ActiGraph device when worn on the ankle demonstrated the strongest agreement with observed step count in people who were weight bearing and non-weight bearing.Caution is needed when using thigh- or hip-worn devices in people who walk slowly.

Radiological features of pulmonary fat embolism in trauma patients: a case series.

PURPOSE: Fat embolism syndrome (FES) is a rare complication in trauma patients (usually with long bone fractures) in which migrating medullary fat precipitates multiorgan dysfunction, classically presenting with dyspnoea, petechiae and neurocognitive dysfunction. Although this triad of symptoms is rare, it nonetheless aids diagnosis of pulmonary fat embolism (PuFE). Typical imaging features of PuFE are not established, although increasing use of CT pulmonary angiography (CTPA) in this cohort may provide important diagnostic information. We therefore conducted a case series of FES patients with CTPA imaging at a Level 1 Trauma Centre in Melbourne, Australia. METHODS: Medical records and various radiological investigations including CTPA of consecutive patients diagnosed clinically with FES between 2006 and 2018, including demographics, injury and their progress during their admission, were reviewed. RESULTS: Fifteen FES patients with retrievable CTPAs were included (mean age 31.2 years, range 17-69; 12 males [80%]). 93.3% had long bone fractures. CTPA was performed 2.00 ± 1.41 days post-admission. Review of these images showed pulmonary opacity in 14 (93.3%; ground-glass opacities in 9 [64.3%], alveolar opacities in 6 [42.9%]), interlobular septal thickening in 10 (66.7%), and pleural effusions in 7 (46.7%). Filling defects were identified in three (20%) CTPAs, with density measuring - 20HU to + 63HU. Ten patients (66.7%) had neuroimaging performed, with two patients demonstrating imaging findings consistent with cerebral fat emboli. CONCLUSION: CTPA features of PuFE are variable, with ground-glass parenchymal changes and septal thickening most commonly seen. Filling defects were uncommon.

Levels of Physical Activity and Sedentary Behavior During and After Hospitalization: A Systematic Review.

OBJECTIVES: To systematically review and synthesize the evidence on physical activity and sedentary behavior during and after hospitalization. DATA SOURCES: Electronic databases and reference lists of relevant articles were searched from 2000 to April 2020. STUDY SELECTION: Studies which continuously monitored physical activity and/or sedentary behavior in hospitalized adults across 2 settings (ie, without a break in measurement between settings). Monitoring could occur from an acute to a subacute or rehabilitation hospital setting, an acute setting to home, or from a subacute or rehabilitation setting to home. DATE EXTRACTION: Data extraction and methodological quality assessments were independently performed by 2 reviewers using standardized checklists. DATA SYNTHESIS: A total of 15 of the 5579 studies identified were included. The studies were composed of heterogenous patient populations. All studies monitored patients with either an accelerometer and/or pedometer and reported a variety of measures, including steps per day, sedentary time, and activity counts. The majority of studies (12 of 15) showed that patients engaged in 1.3 to 5.9 times more physical activity and up to 67% less daily sedentary behavior at home after discharge from acute or subacute settings. CONCLUSIONS: Patients engaged in more physical activity and less sedentary behavior at home compared to both the acute and subacute hospital settings. This may reflect the natural course of recovery or the effect of setting on activity levels. Enabling early discharge home through the implementation of home-hospitalization models may result in increased patient physical activity and reduced sedentary behavior. Further experimental studies are required investigating the effect of home-based models of care on physical activity and sedentary behavior.