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Thoracic electrical bioimpedance: a tool to determine cardiac versus non-cardiac causes of acute dyspnoea in the emergency department
  1. Duwarakan K Satchithananda,
  2. Ruth Kinston
  1. University Hospital of North Staffordshire NHS Trust, City General Hospital, Stoke on Trent, Staffordshire, UK
  1. Correspondence to Dr Ruth Kinston, University Hospital of North Staffordshire NHS Trust, Royal Infirmary, Stoke on Trent ST4 7LN, UK; ruth.kinston{at}

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We read with interest the paper by Vorwerk et al.1 Their research question is clearly of importance, but we would like to raise the following points:

  1. It is a misconception that the majority of patients with ‘cardiac’ breathlessness will have impaired cardiac function, eg, the ADHERE heart failure registry of over 100 000 patients demonstrated that 50.4% of patients hospitalised with heart …

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  • Competing interests None to declare.

  • Provenance and peer review Not commissioned; not externally peer reviewed.