Background Telehealth is an effective option to fight the outbreak of COVID-19. This review aims to systematically characterize the utilization and applications of telehealth during the COVID-19 pandemic focusing mainly on technology implementations. Methods This study was conducted in accordance with Preferred Reporting Items for Systematic reviews and Meta-Analyses (PRISMA). The literature search was conducted in Science Direct, IEEE XPLORE, Scopus, and Web of Science databases from January 2020 until July 2021, with an English language restriction. A quality assessment was based on the Critical Appraisal Skills Programs checklist. Results The included studies focused on the implementation of technology for telehealth, multidisciplinary approach, service satisfaction, guidelines, and medical training. They provided illustrative insight into the strategy of telehealth in different medical specialties, such as pediatric gastroenterology, oncology, ophthalmology, and laryngology. Nonsurgical specialties had the greatest number of telehealth visits. Clinicians showed positive attitudes toward the implementation of video telehealth visits; patients report high levels of satisfaction with this care and strong interest in continuing this modality as a significant portion of clinical practice. Conclusions This systematic review provided an illustrative insight into the strategy of telehealth for different purposes. According to our findings, telehealth may be used in different medical area with a clear strategy of intervention according to patients’ and doctors’ needs.

Background Many healthcare systems have been unable to deal with Covid-19 without influencing non-Covid-19 patients with pre-existing conditions, risking a paralysis in the medium term. This study explores the effects of organizational flexibility on hospital efficiency in terms of the capacity to deliver healthcare services for both Covid-19 and non-Covid-19 patients. Method Focusing on Italian health system, a two-step strategy is adopted. First, Data Envelope Analysis is used to assess the capacity of hospitals to address the needs of Covid-19 and non-Covid-19 patients relying on internal resource flexibility. Second, two panel regressions are performed to assess external organizational flexibility, with the involvement in demand management of external operators in the health-care service, examining the impact on efficiency in hospital capacity management. Results The overall response of the hospitals in the study was not fully effective in balancing the needs of the two categories of patients (the efficiency score is 0.87 and 0.58, respectively, for Covid-19 and non-Covid-19 patients), though responses improved over time. Furthermore, among the measures providing complementary services in the community, home hospitalization and territorial medicine were found to be positively associated with hospital efficiency (0.1290, p < 0.05 and 0.2985, p < 0.01, respectively, for non-Covid-19 and Covid-19 patients; 0.0026, p < 0.05 and 0.0069, p < 0.01, respectively, for non-Covid-19 and Covid-19). In contrast, hospital networks are negatively related to efficiency in Covid-19 patients (-0.1037, p < 0.05), while the relationship is not significant in non-Covid-19 patients. Conclusions Managing the needs of Covid-19 patients while also caring for other patients requires a response from the entire healthcare system. Our findings could have two important implications for effectively managing health-care demand during and after the Covid-19 pandemic. First, as a result of a naturally progressive learning process, the resource balance between Covid-19 and non-Covid-19 patients improves over time. Second, it appears that demand management to control the flow of patients necessitates targeted interventions that combine agile structures with decentralization. Finally, untested integration models risk slowing down the response, giving rise to significant costs without producing effective results.