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Objectives The correlation between ultra low dose computed tomography (ULDCT)-detected parenchymal lung changes and pulmonary function abnormalities is not well described. This study aimed to determine the relationship between ULDCT-detected interstitial lung disease (ILD) and measures of pulmonary function in an asbestos-exposed population. Methods Two thoracic radiologists independently categorised prone ULDCT scans from 143 participants for ILD appearances as absent (score 0), probable (1) or definite (2) without knowledge of asbestos exposure or lung function. Pulmonary function measures included spirometry and diffusing capacity to carbon monoxide (DLCO). Results Participants were 92% male with a median age of 73.0 years. CT dose index volume was between 0.6 and 1.8 mGy. Probable or definite ILD was reported in 63 (44.1%) participants. Inter-observer agreement was good (k = 0.613, p  < 0.001). There was a statistically significant correlation between the ILD score and both forced expiratory volume in 1 second (FEV 1 ) and forced vital capacity (FVC) (r = -0.17, p  = 0.04 and r  = -0.20, p  = 0.02). There was a strong correlation between ILD score and DLCO ( r  = -0.34, p  < 0.0001). Conclusion Changes consistent with ILD on ULDCT correlate well with corresponding reductions in gas transfer, similar to standard CT. In asbestos-exposed populations, ULDCT may be adequate to detect radiological changes consistent with asbestosis. Key Points • Interobserver agreement for the ILD score using prone ULDCT is good. • Prone ULDCT appearances of ILD correlate with changes in spirometric observations. • Prone ULDCT appearances of ILD correlate strongly with changes in gas transfer. • Prone ULDCT may provide sufficient radiological evidence to inform the diagnosis of asbestosis.

IntroductionLung cancer is the leading cause of cancer death in Australia and has the highest cancer burden. Numerous reports describe variations in lung cancer care and outcomes across Australia. There are no data assessing compliance with treatment guidelines and little is known about lung cancer multidisciplinary team (MDT) infrastructure around Australia.MethodsClinicians from institutions treating lung cancer were invited to complete an online survey regarding the local infrastructure for lung cancer care and contemporary issues affecting lung cancer.ResultsResponses from 79 separate institutions were obtained representing 72% of all known institutions treating lung cancer in Australia. Most (93.6%) held a regular MDT meeting although recommended core membership was only achieved for 42/73 (57.5%) sites. There was no thoracic surgery representation in 17/73 (23.3%) of MDTs and surgery was less represented in regional and low case volume centres. Specialist nurses were present in just 37/79 (46.8%) of all sites. Access to diagnostic and treatment facilities was limited for some institutions. IT infrastructure was variable and most sites (69%) do not perform regular audits against guidelines. The COVID-19 pandemic has driven most sites to incorporate virtual MDT meetings, with variable impact around the country. Clinician support for a national data-driven approach to improving lung cancer care was unanimous.DiscussionThis survey demonstrates variations in infrastructure support, provision and membership of lung cancer MDTs, in particular thoracic surgery and specialist lung cancer nurses. This heterogeneity may contribute to some of the well-documented variations in lung cancer outcomes in Australia.

Chronic obstructive pulmonary disease (COPD) has a rising global incidence and acute exacerbation of COPD (AECOPD) carries a high health-care economic burden. Classification and regression tree (CART) analysis is able to create decision trees to classify risk groups. We analysed routinely collected laboratory data to identify prognostic factors for inpatient mortality with AECOPD from our large district hospital. Data from 5,985 patients with 9,915 admissions for AECOPD over a 7-year period were examined. Randomly allocated training ( n  = 4,986) or validation ( n  = 4,929) data sets were developed and CART analysis was used to model the risk of all-cause death during admission. Inpatient mortality was 15.5%, mean age was 71.5 (±11.5) years, 56.2% were male, and mean length of stay was 9.2 (±12.2) days. Of 29 variables used, CART analysis identified three (serum albumin, urea, and arterial pCO 2 ) to predict in-hospital mortality in five risk groups, with mortality ranging from 3.0 to 23.4%. C statistic indices were 0.734 and 0.701 on the training and validation sets, respectively, indicating good model performance. The highest-risk group (23.4% mortality) had serum urea >7.35 mmol/l, arterial pCO 2 >6.45 kPa, and normal serum albumin (>36.5 g/l). It is possible to develop clinically useful risk prediction models for mortality using laboratory data from the first 24 h of admission in AECOPD.

The decision to perform cardiopulmonary resuscitation (CPR) remains one of the most important and difficult decisions a physician must make. This study examined differences in CPR decision making among senior hospital clinicians. A questionnaire was sent out to consultants and specialist registrars in general medicine, elderly care and intensive care in a large UK district general hospital, with anonymous returns. Short clinical scenarios were presented, and participants stated their CPR decision and their confidence level. In total, 86 questionnaires were sent out and 54 replies (63%) were received. There were significant differences between specialties in making the decision to perform CPR and the confidence in doing so, with three cases producing polarised results within the specialties, despite equal confidence in the decision. There is lack of consensus with the CPR decisions made between specialties and within them. Formal training in recognition of futility should be encouraged for all clinicians.

Background Malignant pleural mesothelioma is an incurable cancer caused by exposure to asbestos. The United Kingdom has the highest death rate from mesothelioma in the world and this figure is increasing. Median survival is 8 to 12 months, and most patients have symptoms at diagnosis. The fittest patients may be offered chemotherapy with palliative intent. For patients not fit for systemic anticancer treatment, best supportive care remains the mainstay of management. A study from the United States examining advanced lung cancer showed that early specialist palliative care input improved patient health related quality of life and depression symptoms 12 weeks after diagnosis. While mesothelioma and advanced lung cancer share many symptoms and have a poor prognosis, oncology and palliative care services in the United Kingdom, and many other countries, vary considerably compared to the United States. The aim of this trial is to assess whether regular early symptom control treatment provided by palliative care specialists can improve health related quality of life in patients newly diagnosed with mesothelioma. Methods This multicentre study is an non-blinded, randomised controlled, parallel group trial. A total of 174 patients with a new diagnosis of malignant pleural mesothelioma will be minimised with a random element in a 1:1 ratio to receive either 4weekly regular early specialist symptom control care, or standard care. The primary outcome is health related quality of life for patients at 12 weeks. Secondary outcomes include health related quality of life for patients at 24 weeks, carer health related quality of life at 12 and 24 weeks, patient and carer mood at 12 and 24 weeks, overall survival and analysis of healthcare utilisation and cost. Discussion Current practice in the United Kingdom is to involve specialist palliative care towards the final weeks or months of a life-limiting illness. This study aims to investigate whether early, regular specialist care input can result in significant health related quality of life gains for patients with mesothelioma and if this change in treatment model is cost-effective. The results will be widely applicable to many institutions and patients both in the United Kingdom and internationally. Trial registration Current controlled trials ISRCTN18955704 . Date ISRCTN assigned: 31 January 2014.

Lung cancer screening of high-risk individuals with computed tomography is a promising intervention to reduce lung cancer mortality. Patient Decision Aids (PtDAs) may assist eligible individuals assess the risks and benefits associated with screening. Screening preference is high among lower-risk, screening-ineligible individuals and strategies are needed to reduce screening demand among this group. We developed and evaluated a resource comprising a recruitment pamphlet combined with either a PtDA for screening-eligible individuals or an education pamphlet for screening-ineligible individuals. Quasi-experimental pre-post pamphlet exposure design. Ever-smokers aged 55–80 years attending hospital outpatient clinics were invited. Among screening-eligible participants, the assessed outcome was change in score on the Decisional Conflict Scale (DCS). Among screening-ineligible participants, the assessed outcomes were change in screening preference. In the study 51% (55/107) of invited individuals participated, with mean ± standard deviation age 66.9 ± 6.4 years, 53% (29/55) male, and 65% (36/55) eligible for screening. Median (interquartile range) DCS among screening-eligible participants reduced from 28.9 (22.7–45.3) pre-PtDA to 25 (1.6–29.7) post-PtDA (p < .001), but there was no significant change in the proportion that reached the accepted threshold for decisional certainty (DCS < 25, 10/36 [28%] pre-exposure vs. 14/36 [39%] post-exposure, p = .1). Screening preference among screening-ineligible individuals reduced after viewing the screening-ineligible brochure (pre-exposure median of “Prefer” to post-exposure median of “Unsure,” p = .001). Our consumer information pamphlets about lung cancer screening may reduce decisional conflict and improve alignment of screening preference with eligibility.

BackgroundPleural effusions occur commonly after cardiac surgery and the effects of drainage on gas exchange in this population are not well established. We examined pulmonary function indices following drainage of pleural effusions in cardiac surgery patients.MethodsWe performed a retrospective study examining the effects of pleural fluid drainage on the lung function indices of patients recovering from cardiac surgery requiring mechanical ventilation for more than 7 days. We specifically analysed patients who had pleural fluid removed via an intercostal tube (ICT: drain group) compared with those of a control group (no effusion, no ICT).ResultsIn the drain group, 52 ICTs were sited in 45 patients. The mean (SD) volume of fluid drained was 1180 (634) mL. Indices of oxygenation were significantly worse in the drain group compared with controls prior to drainage. The arterial oxygen tension (PaO2)/fractional inspired oxygen (FiO2) (P/F) ratio improved on day 1 after ICT placement (mean (SD), day 0: 31.01 (8.92) vs 37.18 (10.7); p<0.05) and both the P/F ratio and oxygenation index (OI: kPa/cm H2O=PaO2/mean airway pressure×FiO2) demonstrated sustained improvement to day 5 (P/F day 5: 39.85 (12.8); OI day 0: 2.88 (1.10) vs day 5: 4.06 (1.73); both p<0.01). The drain group patients were more likely to have an improved mode of ventilation on day 1 compared with controls (p=0.028).ConclusionsPleural effusion after cardiac surgery may impair oxygenation. Drainage of pleural fluid is associated with a rapid and sustained improvement in oxygenation.

An anonymous survey to assess the attitudes to smoking of men serving on two Trident Nuclear submarines was conducted by questionnaire. A total of 244 questionnaires were completed, representing 87% of the two crews. Thirty-two percent of respondents declared themselves to be smokers, 69% were nonsmokers, and of these, 31% were ex-smokers. Attitudes of all respondents to an enforced ban of smoking on submarines indicated that 55% felt that it would be justifiable, 46% felt that it would be unfair, 42% felt that it was uncalled for, 46% thought that it would be illegal, and 47% thought that a ban was about time. The separate opinions of smokers and nonsmokers were polarized, whereas the overall results indicate indifferent attitudes of crew members. Further research into the atmospheric effects of environmental tobacco smoke on a submarine is required.

The decision to perform cardiopulmonary resuscitation (CPR) remains one of the most important and difficult decisions a physician must make. This study examined differences in CPR decision making among senior hospital clinicians. A questionnaire was sent out to consultants and specialist registrars in general medicine, elderly care and intensive care in a large UK district general hospital, with anonymous returns. Short clinical scenarios were presented, and participants stated their CPR decision and their confidence level. In total, 86 questionnaires were sent out and 54 replies (63%) were received. There were significant differences between specialties in making the decision to perform CPR and the confidence in doing so, with three cases producing polarised results within the specialties, despite equal confidence in the decision. There is lack of consensus with the CPR decisions made between specialties and within them. Formal training in recognition of futility should be encouraged for all clinicians.