• Karin Smit, Roderick P Venekamp, Geert-Jan Geersing, Frans H Rutten, Lisette Schoonhoven, and Dorien Lm Zwart.
• Department of General Practice, Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht.
• Br J Gen Pract. 2023 Dec 1; 73 (737): e894e902e894-e902.

BackgroundResearch on how home monitoring with a pulse oximeter is executed and experienced by patients with an acute illness such as COVID-19 and their GPs is scarce.AimTo examine the process of structured home monitoring with a pulse oximeter for patients with COVID-19, their caregivers, and their GPs.Design And SettingThis was a mixed-method process evaluation alongside a pilot feasibility randomised controlled trial. Patients drawn from a general practice setting, with COVID-19, and aged ≥40 years with cardiovascular comorbidities were included.MethodQuantitative trial data from 21 intervention group participants (age 63.2 years) were used, plus qualitative data from semi-structured interviews with 15 patients (age 62.9 years), eight informal caregivers, and 10 GPs.ResultsAdherence to the intervention was very high; 97.6% of protocolised peripheral oxygen saturation (SpO2) measurements in the first 14 days until admission to hospital were recorded (677/694, median daily per patient 2.7). Three identified themes from the interviews were: (a) user-friendliness of home monitoring: easy use of the pulse oximeter and patient preference of a three times daily measurement scheme; (b) patient empowerment: pulse oximeter use enhanced patient self-assurance and empowered patients and informal caregivers in disease management; and (c) added value to current clinical decision making. GPs perceived the pulse oximeter as a useful diagnostic tool and did not experience any additional workload. They felt more secure with remote monitoring with a pulse oximeter than only phone-based monitoring, but emphasised the need to keep an overall view on the patient's condition.ConclusionStructured home monitoring by pulse oximetry supports patients and their informal caregivers in managing, and GPs in monitoring, acute COVID-19 disease. It appears suitable for use in acutely ill patients in general practice.© The Authors.

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