Sleep medicine and coronavirus disease 2019.

PURPOSE OF REVIEW: To evaluate the impact of the COVID-19 pandemic on the care of people with sleep disorders, to explore relationships between OSA and COVID-19, and to describe current knowledge of the effect of the pandemic on sleep globally. RECENT FINDINGS: COVID-19 has led to significant changes in the practice of sleep medicine, including the care of patients with OSA. An OSA diagnosis may portend a worse prognosis with COVID-19, whilst prior COVID-19 may have an impact on sleep breathing. SUMMARY: The pandemic has caused marked difficulties with access to diagnostic sleep studies and reduced capacity for CPAP initiation. Conversely, adherence to CPAP therapy may have improved, and use of remote consultations and telemonitoring has increased. An OSA diagnosis may be associated with increased risk of severe COVID-19, although any apparent relationship may be attributable to confounding factors, such as obesity and metabolic disease. Small studies have reported some increase in CPAP requirements in OSA patients following COVID-19 infection. More generally, the pandemic has been associated with a deterioration in subjective sleep quality across the population; much of this appears because of increased anxiety and stress. Finally, studies assessing putative links between COVID-19 and REM sleep issues are ongoing.

Long-term outcomes in patients with COPD treated with non-invasive ventilation for acute hypercapnic respiratory failure.

PURPOSE: Chronic Obstructive Lung Disease (COPD) remains a major cause of morbidity and mortality across the world. We evaluated survival over 9 years in a cohort of patients with COPD requiring acute inpatient non-invasive ventilation (NIV). We analyzed prognostic indices to evaluate if they were associated with mortality. PATIENTS AND METHODS: We performed a retrospective chart review of all patients who were admitted to St. James's Hospital respiratory ward with COPD and acute hypercapnic respiratory failure who required NIV over a 12-month period and followed their outcomes over 9 years. We investigated the association between survival and potential prognostic variables using univariate analysis and multivariate Cox proportional hazards model. We evaluated the association between survival and the following parameters: age, gender, multiple admissions requiring NIV (> 1 admission in within 12 months of index presentation), home NIV use preadmission, initial arterial blood gas pH, days spent on NIV, serum albumin and serum albumin to serum CRP ratio at admission. RESULTS: Ninety-nine patients with COPD and acute hypercapnic respiratory failure were identified over a 12-month period from January to December 2011. Survival at 1, 2, 5 and 9 years was 65% (n = 64), 42% (n = 42), 25% (n = 25) and 21% (n = 21), respectively. Increasing age (p value < 0.001) and a lower serum albumin (p value < 0.005) were associated with a higher mortality. There was a trend towards improved survival in the group who were treated with home NIV prior to admission compared to no NIV therapy at home but this did not reach statistical significance (Fig. 3, p value = 0.088). CONCLUSION: This study highlights the long-term mortality in patients with COPD admitted with hypercapnic respiratory failure requiring NIV and correlates with prior studies. Increasing age and lower serum albumin were associated with increased mortality. Home NIV may have a protective long-term survival benefit in patients with COPD who have been admitted for acute NIV.

New developments in tuberculosis diagnosis and treatment.

Tuberculosis (TB) is a major cause of morbidity and mortality worldwide. It is estimated that 25% of the world's population are infected with Mycobacterium tuberculosis, with a 5-10% lifetime risk of progression into TB disease. Early recognition of TB disease and prompt detection of drug resistance are essential to halting its global burden. Culture, direct microscopy, biomolecular tests and whole genome sequencing are approved methods of diagnosis; however, their widespread use is often curtailed owing to costs, local resources, time constraints and operator efficiency. Methods of optimising these diagnostics, in addition to developing novel techniques, are under review. The selection of an appropriate drug regimen is dependent on the susceptibility pattern of the isolate detected. At present, there are 16 new drugs under evaluation for TB treatment in phase I or II clinical trials, with an additional 22 drugs in preclinical stages. Alongside the development of these new drugs, most of which are oral medications, new shorter regimes are under evaluation. The aim of these shorter regimens is to encourage patient adherence, and prevent relapse or the evolution of further drug resistance. Screening for TB infection, especially in vulnerable populations, provides an opportunity for intervention prior to progression towards infectious TB disease. New regimens are currently under evaluation to assess the efficacy of shorter durations of treatment in this population. In addition, there is extensive research into the use of post-exposure vaccinations in this cohort. Worldwide collaboration and sharing of expertise are essential to our ultimate aim of global eradication of TB disease. Educational aims: Differentiate between TB infection and TB disease.Understand the different methods of diagnosing TB disease and resistance.Recognise the different drugs and regimens currently in use for TB disease.Be able to discuss risk of TB disease in TB infection, and assist patients in making an informed decision on treatment for TB infection.