IntroductionSevere acute respiratory syndrome coronavirus-2 (SARS-CoV-2) or COVID-19, constitutes a public health emergency of international concern. The virus has spread globally through aerosol and contact transmission since the discovery of the SARS-CoV-2 in December 2019 in Wuhan, China. 1 As of 8 October 2020, 36,002,827 cases of COVID-19 have been reported worldwide, including 1,049,810 deaths. 2 The majority of early reported cases had the common symptoms of fever, dry cough and dyspnoea, as well as less common symptoms of headache, myalgia and sputum production. Computerised tomography (CT) scans showed bilateral lung opacities in almost all patients. 3 A meta-analysis of risk factors of critical COVID-19 patients showed that patients with dyspnoea were more likely to deteriorate into a critical condition than those who presented with fever only. There was an increased risk among the elderly (especially males over 65 years) and patients with comorbidities, such as diabetes, hypertension, cardiovascular and respiratory disease. 4 The assessment of dyspnoea is therefore an essential part of managing patients presenting with suspected COVID-19.The pandemic has placed increasing strain on scarce healthcare resources such as hospital beds and clinician time. This has been due to both increased demand and the need for stringent infection control procedures. As a result, many countries have relied on primary care systems to reduce the fl ow of patients through hospital emergency departments.A large amount of community-based diagnosis and triage of COVID-19 is currently being performed by video and telephone consultation. This has presented clinicians with a new challenge in risk-stratifying patients with shortness of breath. Dyspnoea is a diverse symptom and can be present in those who are critically ill but also in the worried well. Objective modes of assessment are required to differentiate these patient groups.The transformation of primary care from face-to-face to remote consultations has been aided by technology such as