Effectiveness and Medicoeconomic Evaluation of Home Monitoring of Patients With Mild COVID-19: Covidom Cohort Study.

BACKGROUND: Covidom was a telemonitoring solution for home monitoring of patients with mild to moderate COVID-19, deployed in March 2020 in the Greater Paris area in France to alleviate the burden on the health care system. The Covidom solution included a free mobile application with daily monitoring questionnaires and a regional control center to quickly handle patient alerts, including dispatching emergency medical services when necessary. OBJECTIVE: This study aimed to provide an overall evaluation of the Covidom solution 18 months after its inception in terms of effectiveness, safety, and cost. METHODS: Our primary outcome was to measure effectiveness using the number of handled alerts, response escalation, and patient-reported medical contacts outside of Covidom. Then, we analyzed the safety of Covidom by assessing its ability to detect clinical worsening, defined as hospitalization or death, and the number of patients with clinical worsening without any preceding alert. We evaluated the cost of Covidom and compared the cost of hospitalization for Covidom and non-Covidom patients with mild COVID-19 cases seen in the emergency departments of the largest network of hospitals in the Greater Paris area (Assistance Publique-Hôpitaux de Paris). Finally, we reported on user satisfaction. RESULTS: Of the 60,073 patients monitored by Covidom, the regional control center handled 285,496 alerts and dispatched emergency medical services 518 times. Of the 13,204 respondents who responded to either of the follow-up questionnaires, 65.8% (n=8690) reported having sought medical care outside the Covidom solution during their monitoring period. Of the 947 patients who experienced clinical worsening while adhering to daily monitoring, only 35 (3.7%) did not previously trigger alerts (35 were hospitalized, including 1 who died). The average cost of Covidom was €54 (US $1=€0.8614) per patient, and the cost of hospitalization for COVID-19 worsening was significantly lower in Covidom than in non-Covidom patients with mild COVID-19 cases seen in the emergency departments of Assistance Publique-Hôpitaux de Paris. The patients who responded to the satisfaction questionnaire had a median rating of 9 (out of 10) for the likelihood of recommending Covidom. CONCLUSIONS: Covidom may have contributed to alleviating the pressure on the health care system in the initial months of the pandemic, although its impact was lower than anticipated, with a substantial number of patients having consulted outside of Covidom. Covidom seems to be safe for home monitoring of patients with mild to moderate COVID-19.

Characteristics and outcomes of asthmatic outpatients with COVID-19 who receive home telesurveillance.

Background: The prognosis of asthmatic outpatients with COVID-19 needs to be clarified. The objectives of this study were: 1) to investigate the characteristics and outcomes of asthmatic patients receiving initial ambulatory care and home monitoring for COVID-19 with Covidom, a telesurveillance solution; and 2) to compare the characteristics and outcomes between asthmatic and non-asthmatic patients. Methods: Inclusion criteria were age ≥18 years, suspected or confirmed COVID-19 diagnosis allowing initial ambulatory care, registration in Covidom between March 2020 and April 2021 and completion of the initial medical questionnaire. We compared clinical characteristics and outcomes between asthmatic and non-asthmatic patients, and we evaluated whether asthma was independently associated with clinical worsening (hospitalisation or death) within 30 days follow-up using a multivariate logistic regression model. Results: 33 815 patients met the inclusion criteria. Asthma was reported in 4276 (12.6%). The main comorbidities among asthmatic patients were obesity (23.1%), hypertension (12.7%) and diabetes (4.5%). As compared with non-asthmatic patients, asthmatic patients were more often female (70.0 versus 62.1%, p<0.001), of younger age (42.2 versus 43.8 years, p<0.001) and obese (23.1 versus 17.6%, p<0.001). The rate of hospitalisation did not differ significantly (4.7 versus 4.2%, p=0.203) and no asthmatic patient died during follow-up (versus 25 non-asthmatic patients, 0.1%; p=0.109). In multivariate analysis, asthma was independently associated with higher risk of clinical worsening (OR 1.23, 95% CI 1.04-1.44, p=0.013). Conclusion: In a large French cohort of patients receiving initial ambulatory care and home monitoring for COVID-19, asthma was independently associated with higher risk of clinical worsening although no asthmatic patient died within the 30 days follow-up.

Safe Discharge Home With Telemedicine of Patients Requiring Nasal Oxygen Therapy After COVID-19.

Introduction: The COVID-19 pandemic created challenges to healthcare systems worldwide. To allow overwhelmed hospitals to focus on the most fragile and severely ill patients, new types of management had to be set up. During the pandemic, patients with COVID-19 from greater Paris area were monitored at home using a web-based remote system called COVIDOM™, using self-administered questionnaires, which triggered alerts to a regional control center. To ease hospital discharge and to prevent hospital from being overwhelmed, patients still requiring low-flow oxygen therapy discharged home were also included in this telemedicine solution. We aim to evaluate the safety of this original management. Methods: We conducted a retrospective multicenter cohort of patients discharged home from hospital after COVID-19 and still requiring nasal oxygen therapy, who were monitored by questionnaire and trained physicians using COVIDOM. During late follow-up, the status of the patients using a Euro-Qol (EQ-5D-5L) questionnaire, and the Medical Research Council (MRC) Dyspnea scale was collected. Results: From March 21st to June 21st 2020, 73 COVID-19 patients still receiving nasal oxygen at hospital discharge were included. Median [Inter-Quartile Range (IQR)] age was 62.0 [52.5-69.0] years, 64.4% were male. Altogether, risk factors were observed in 49/73 (67%) patients, mainly hypertension (35.6%), diabetes mellitus (15.1%) and active neoplasia (11.0%). Among the cohort, 26% of patients were previously managed in ICU. Oxygen therapy was required for a median [IQR] of 20 [16-31] days. No death or urgent unplanned hospitalization were observed during the COVIDOM telemonitoring. During the late follow-up evaluation (6 months after inclusion), the mean EQ-5D-5L questionnaire score was 7.0 ± 1.6, and the mean MRC dyspnea scale was 0.8 ± 1.0, indicating absence of dyspnea. Five patients have died from non-COVID causes. Conclusions: In this preliminary study, early discharge home of patients with severe COVID-19 disease who still required low-oxygen therapy seems to be safe.

Prognosis of rash and chilblain-like lesions among outpatients with COVID-19: a large cohort study.

In a large regional observational cohort study of adult (≥ 18 years), outpatients with COVID-19, prevalence, characteristics, and outcome of patients with rash and/or chilblain-like lesions (CLL), compared with population without cutaneous features, were studied. In total, 28,957 outpatients were included; the prevalence of rash and CCL were 9.5% and 3.7%, respectively. Presence of rash was significantly associated with presence of asthenia, shivers or myalgia, respiratory and gastro-intestinal symptoms, and anosmia/ageusia. The presence of CCL was associated with chest pain, chest oppression, nausea/vomiting, and anosmia/ageusia. Patients with CCL were significantly less prone to an unfavourable outcome (hospitalization or death).

Time to resolution of respiratory and systemic coronavirus disease 2019 symptoms in community setting.

OBJECTIVES: To assess the time to resolution of respiratory and systemic symptoms and their associated factors in outpatients during the coronavirus disease 2019 (COVID-19) pandemic. METHODS: Cohort study including adult outpatients, managed with Covidom, a telesurveillance solution, with RT-PCR-confirmed diagnosis, from 9 March 2020 until 23 February 2021. Follow up was 30 days after symptom onset. RESULTS: Among the 9667 patients included, mean age was 43.2 ± 14.0 years, and 67.5% were female (n = 6522). Median body mass index (BMI) was 25.0 kg/m2 (interquartile range 22.1-28.8 kg/m2). Main co-morbidities were: hypertension (12.9%; n = 1247), asthma (11.0%; n = 1063) and diabetes mellitus (5.5%; n = 527). The most frequent symptom during follow up was dyspnoea (65.1%; n = 6296), followed by tachypnoea (49.9%; n = 4821), shivers (45.6%; n = 4410) and fever (36.7%; n = 3550). Median times to resolution of systemic and respiratory symptoms were 3 days (95% CI 2-4 days) and 7 days (95% CI 6-8 days), respectively. Ultimately, 17.2% (95% CI 15.7%-18.8%) still presented respiratory symptoms at day 30. Longer time to respiratory symptom resolution was associated with older age, increased BMI, chronic obstructive pulmonary disease, coronary artery disease, asthma and heart failure. Regarding systemic symptoms, coronary artery disease, asthma, age above 40 years and elevated BMI were associated with longer time to resolution. CONCLUSIONS: Time to symptom resolution among outpatients with COVID-19 seemed shorter for systemic than respiratory symptoms. Prolonged respiratory symptoms were common at day 30. Risk factors associated with later resolution included age, and cardiovascular and pulmonary diseases.