Medical teams continue to treat many patients with COVID-19 infection. This disease can result in profound hypoxaemia that may necessitate intubation and invasive mechanical ventilation in those who are critically ill. This intervention carries risk to both patients and healthcare workers and utilises significant hospital resource for prolonged periods. Simple, safe interventions that can be used before critical deterioration are highly desirable. The prone position in conscious non-ventilated patients with COVID-19 infection may improve oxygenation in the short term and defer or prevent the need for intubation in some. However, clinicians must be aware that there is a small evidence base for this intervention currently. This review sets out evidence regarding the use of this technique to aid the decision making of frontline staff.
Right ventricular injury (RVI) in the context of acute respiratory distress syndrome (ARDS) is well recognized as an important determinant risk factor of mortality. Veno-venous extracorporeal membrane oxygenation (VV-ECMO) is part of the algorithm for the management of patients with severe ARDS and severely impaired gas exchange. Although VV-ECMO may theoretically protect the RV it is uncertain to what degree RVI persists despite VV-ECMO support, and whether it continues to influence mortality after ECMO initiation. The aim of this systematic review and meta-analysis was to investigate the impact of RVI on mortality in this context, testing the hypothesis that RVI worsens mortality in this cohort. We performed a systematic search that identified seven studies commenting on RVI and mortality in patients with ARDS receiving VV-ECMO. The presence of RVI was associated with greater mortality overall (odds ratios [OR]: 2.72; 95% confidence intervals [CI]: 1.52–4.85; p < 0.00) and across three subgroups (RV dilatational measures: OR: 3.51; 95% CI: 1.51–8.14; p < 0.01, RV functional measures: OR: 1.84; 95% CI: 0.99–3.42; p = 0.05, RV measurements post-ECMO initiation: OR: 1.94; 95% CI: 1.01–3.72; p < 0.05). Prospective studies are needed to investigate the causal relationship between RVI and mortality in this patient group and the best management strategies to reduce mortality.
A 74-year-old woman presented to her general practitioner with cough and occasional sputum production. Having failed to respond to courses of antibiotics in the community, she was referred to the thoracic medicine clinic. High-resolution CT chest revealed cylindrical bronchiectasis predominantly in the right lower lobe. Lung function revealed preserved FEV1 and FVC but reduced gas transfer values. Bronchiectasis secondary to ulcerative colitis was diagnosed. Inhaled corticosteroid therapy was initiated, with good clinical response noted at 6 monthly follow-up. Remission was sustained with tapering of the steroid dose. Recognition of respiratory complications in cases of inflammatory bowel disease is likely still poor among clinicians. Although rare, a working knowledge of principles of investigation and management will aid timely diagnosis and treatment, potentially preventing progression of respiratory disease.
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