Chronic obstructive pulmonary disease (COPD), although primarily a disease of the lungs, is associated with extrapulmonary effects such as muscle weakness and osteoporosis. Fractures owing to osteoporosis cause significant morbidity and mortality, particularly in patients with COPD. To prevent osteoporotic fractures, it is important to diagnose osteoporosis in an early stage and to start anti-osteoporotic therapy in at-risk patients. Because routine chest computed tomography (CT) is increasingly used to assess the extent of emphysema and airways disease in patients with COPD, we investigated whether simple attenuation measurement of the thoracic spine on routine chest CT may provide useful information on bone health in patients with COPD. Fifty-eight patients with moderate to very severe COPD were included in our study. The average attenuation of thoracic vertebrae 4, 7, and 10 on chest CT was correlated with the lowest bone mineral density (BMD) of the hip and lumbar spine (L 1 to L 4 ) on dual-energy X-ray absorptiometry (DXA) in patients with COPD. The inter-and intra-observer variabilities of the attenuation measurements were low as shown by Bland-Altman plots. Pearson's correlation coefficient between the average attenuation of the three thoracic vertebrae and the lowest BMD of the hip and lumbar spine was high (r ¼ 0.827, p < 0.001). A receiver-operating characteristic (ROC) analysis of the area under the curve for osteoporosis was 0.969 (p < 0.001), corresponding to an attenuation threshold of 147 Hounsfield Units (HU). In conclusion, our data demonstrated that bone attenuation measured on routine chest CT correlated strongly with BMD assessed on DXA in patients with COPD. Routine chest CT may provide useful information on bone health in patients with COPD. ß
Aims
Urate‐lowering therapy (ULT) is effective in gout, but suboptimal management with wide variability in dose escalation remains widespread. We protocolized dose escalation of ULT to improve gout management. The aim was to reduce time to achieve target serum urate (SU) <360 µmol/L.
Methods
Process improvement tools were used to identify underlying causes of prolonged time to target SU. We designed a nurse‐led telemedicine intervention for dose escalation of ULT. Patients with gout with SU ≥360 µmol/L meeting indications for ULT at a single institution were recruited. Exclusion criteria were estimated glomerular filtration rate <30 mL/min, pregnancy, cognitive impairment and poor mobility. A nurse‐led telemedicine clinic was set up to perform patient education, monitoring of adverse events and drug escalation. We partnered with primary healthcare centers for routine blood tests.
Results
From July 2016 to December 2017, 127 patients were recruited. Median time to target SU was 19.0 weeks (interquartile range [IQR] 11.0‐31.0). Median dose of allopurinol was 300 mg/d (IQR 200‐400) in normal renal function and lower in renal impairment. Median telemedicine calls required to achieve target SU was 2 (IQR 1‐3). No patient was hospitalized for gout flares. Two patients had adverse drug reactions, one required cessation of allopurinol for rash with eosinophilia, the other had self‐resolving ulcers and allopurinol was continued. Lower baseline SU and number of gout flares were associated with attainment of target SU.
Conclusion
A nurse‐led telemedicine for gout care is effective and safe. Our results affirm the utility of telemedicine in increasing access to care and lower healthcare utilization.
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