INTRODUCTION
cardiovascular comorbidity, fits
A pulse oximeter is a small, easy-to-operate, non-invasive tool to measure the peripheral oxygen saturation (SpOTherefore, a primary care-based, open, pilot randomised controlled trial (RCT) was conducted. The aim was to assess the feasibility of a trial of home monitoring by pulse oximetry for patients aged ≥40 years with cardiovascular comorbidity and moderate-to-severe COVID-19 compared with usual care.How this fits in