A brief retrospective review of medical records comparing outcomes for inpatients treated via telehealth versus in-person protocols: is telehealth equally effective as in-person visits for treating neutropenic fever, bacterial pneumonia, and infected bacterial wounds?

Perceived barriers and facilitators to the adoption of telemedicine infectious diseases consultations in southeastern Missouri hospitals

INTRODUCTION

Telemedicine infectious diseases consultations (tele-ID consults) improves access to healthcare for underserved/resource-limited communities. However, factors promoting or hindering implementation of tele-ID consults in low-resource settings are understudied. This study sought to fill this gap by describing perceived barriers and facilitators tele-ID consults at three rural hospitals in southeastern Missouri.

METHODS

Twelve in-depth, semi-structured interviews were conducted with a purposively sampled group of information-rich hospital stakeholders from three rural, southeastern Missouri hospitals with partial or no on-site availability of ID physicians. Our literature-informed interview guide elicited participants' knowledge and experience with tele-ID consults, perceptions on ID consultation needs, and perceived barriers to and facilitators of tele-ID consults. Interview transcripts were coded using an iterative process of inductive analysis to identify core themes related to barriers and facilitators.

RESULTS

Perceived barriers to adopting and implementing tele-ID consults included logistical challenges, technology and devices, negative emotional responses, patient-related factors, concerns about reduced quality of care when using telemedicine, lack of acceptance or buy-in from physicians or staff, and legal concerns. Key facilitators included perceived need, perceived benefits to patients and physicians, flexibility and openness to change among staff members and patients, telemedicine champions, prior experiences, and enthusiasm.

DISCUSSION

Our findings demonstrate that rural hospitals need tele-ID consults and have the capacity to implement tele-ID consults, but operational and technical feasibility challenges remain. Adoption and implementation of tele-ID consults may reduce ID-physician shortage-related service gaps by permitting ID physician's greater geographic reach.

[Implementation and use of telemedicine in health care during the outbreak of monkeypox in the health area of Ibiza and Formentera]

OBJECTIVE

The objective of this work is to describe how the use of the information and communication technologies has been used in the clinical control, follow-up and treatment of all the patients affected by monkeypox in our health area.

DESIGN AND SITE

A descriptive, observational and retrospective work has been carried out to show the clinical management of the monkeypox cases assisted in the Health Area of Ibiza and Formentera (ASEF), in the field of the primary care.

PARTICIPANTS AND METHODS

All patients affected by monkeypox who met the inclusion criteria were included in the study (a total of 79 patients), covering the period from 01/06/22 to 30/11/22. A protocol was designed in order to recruit the patients, extract the samples, monitor the close contacts, notify the cases to the health authorities, clinical assistance and administrative processing of the sick leaves.

RESULTS AND CONCLUSIONS

The adherence of the patients with the control system was majoritarian. Telemedicine has been a useful tool for the exchange of information during the provision of continuous medical care to patients affected by the outbreak of monkeypox infection, guaranteeing their safety and privacy and allowing the management of an infectious disease that requires isolation, control, and medical monitoring.

A Digital Respiratory Ward in Leicester, Leicestershire, and Rutland, England, for Patients With COVID-19: Economic Evaluation of the Impact on Acute Capacity and Wider National Health Service Resource Use

BACKGROUND

The COVID-19 pandemic stressed global health care systems' acute capacity and caused a diversion of resources from elective care to the treatment of acute respiratory disease. In preparing for a second wave of COVID-19 infections, England's National Health Service (NHS) in Leicester, Leicestershire, and Rutland sought to protect acute capacity in the winter of 2020-2021. Their plans included the introduction of a digital ward where patients were discharged home early and supported remotely by community-based respiratory specialists, who were informed about patient health status by a digital patient monitoring system.

OBJECTIVE

The objective of the digital ward was to maintain acute capacity through safe, early discharge of patients with COVID-19 respiratory disease. The study objective was to establish what impact this digital ward had on overall NHS resource use.

METHODS

There were no expected differences in patient outcomes. A cost minimization was performed to demonstrate the impact on the NHS resource use from discharging patients into a digital COVID-19 respiratory ward, compared to acute care length of stay (LOS). This evaluation included all 310 patients enrolled in the service from November 2020 (service commencement) to November 2021. Two primary methods, along with sensitivity analyses, were used to help overcome the uncertainty associated with the estimated comparators for the observational data on COVID-19 respiratory acute LOS, compared with the actual LOS of the 279 (90%) patients who were not discharged on oxygen nor were in critical care. Historic comparative LOS and an ordinary least squares model based on local monthly COVID-19 respiratory median LOS were used as comparators. Actual comparator data were sourced for the 31 (10%) patients who were discharged home and into the digital ward for oxygen weaning. Resource use associated with delivering care in the digital ward was sourced from the digital system and respiratory specialists.

RESULTS

In the base case, the digital ward delivered estimated health care system savings of 846.5 bed-days and US $504,197 in net financial savings across the 2 key groups of patients-those on oxygen and those not on oxygen at acute discharge (both P<.001). The mean gross and net savings per patient were US $1850 and US $1626 in the base case, respectively, without including any savings associated with a potential reduction in readmissions. The 30-day readmission rate was 2.9%, which was below comparative data. The mean cost of the intervention was US $223.53 per patient, 12.1% of the estimated gross savings. It was not until the costs were increased and the effect reduced simultaneously by 78.4% in the sensitivity analysis that the intervention was no longer cost saving.

CONCLUSIONS

The digital ward delivered increased capacity and substantial financial savings and did so with a high degree of confidence, at a very low absolute and relative cost.

Large-scale real-life implementation of technology-enabled care to maximize hospitals' medical surge preparedness during future infectious disease outbreaks and winter seasons: a viewpoint

Hospitals can be overburdened with large numbers of patients with severe infectious conditions during infectious disease outbreaks. Such outbreaks or epidemics put tremendous pressure on the admission capacity of care facilities in the concerned region, negatively affecting the elective program within these facilities. Such situations have been observed during the recent waves of the coronavirus disease pandemic. Owing to the imminent threat of a "tripledemic" by new variants of the coronavirus disease (such as the new Omicron XBB.1.16 strain), influenza, and respiratory syncytial virus during future winter seasons, healthcare agencies should take decisive steps to safeguard hospitals' surge capacity while continuing to provide optimal and safe care to a potentially large number of patients in their trusted home environment. Preparedness of health systems for infectious diseases will require dynamic interaction between a continuous assessment of region-wide available hospital capacity and programs for intensive home treatment of patients who can spread the disease. In this viewpoint, we describe an innovative, dynamic coupling system between hospital surge capacity and cascading activation of a nationwide system for remote patient monitoring. This approach was developed using the multi-criteria decision analysis methodology, considering previously published real-life experiences on remote patient monitoring.

Application of telemedicine in infectious diseases

INTRODUCTION

Infectious pathologies can benefit from the application of Telemedicine (TM). This study provides a description of the infectious pathology treated by the Telemedicine Service of the Hospital Central de la Defensa Gómez Ulla (STM-HCDGU).

METHODS

Analysis of the e-consultations made by members of the Armed Forces (FA) of Spain displaced to the area of ​​operations (ZO) in the period between 01/1/2015 and 31/12/2018 who developed infectious symptoms.

RESULTS

127 infectious diseases were diagnosed, the most frequent being those of respiratory etiology and later malaria. Geographically Africa and embarked contingents were the most significant. It was necessary to evacuate 18 patients to the HCDGU, being the diagnosis of malaria the most frequent reason for evacuation, cause of the only fatal case.

CONCLUSIONS

infectious diseases benefit from the application of TM, being an important tool for the diagnosis and treatment of these, constituting an opportunity to expand to other displaced or remote populations.

An Implementation Roadmap for Establishing Remote Infectious Disease Specialist Support for Consultation and Antibiotic Stewardship in Resource-Limited Settings

Infectious Disease (ID)-trained specialists, defined as ID pharmacists and ID physicians, improve hospital care by providing consultations to patients with complicated infections and by leading programs that monitor and improve antibiotic prescribing. However, many hospitals and nursing homes lack access to ID specialists. Telehealth is an effective tool to deliver ID specialist expertise to resource-limited settings. Telehealth services are most useful when they are adapted to meet the needs and resources of the local setting. In this step-by-step guide, we describe how a tailored telehealth program can be implemented to provide remote ID specialist support for direct patient consultation and to support local antibiotic stewardship activities. We outline 3 major phases of putting a telehealth program into effect: pre-implementation, implementation, and sustainment. To increase the likelihood of success, we recommend actively involving local leadership and other stakeholders in all aspects of developing, implementing, measuring, and refining programmatic activities.

Outcomes of Telehealth for Wound Care: A Scoping Review

OBJECTIVE

To synthesize the literature on delivering wound care via telehealth and compare clinical, healthcare utilization, and cost outcomes when wound care is provided via telehealth (telewound) modalities compared with in-person care.

DATA SOURCES

An electronic search of PubMed, CINAHL, and Cochrane Clinical Trials databases for articles published from 1999 to 2019 was conducted using the following MeSH search terms: telewound, wound, wound care, remote care, telehealth, telemedicine, eHealth, mobile health, pressure injury, and ulcer.

STUDY SELECTION

Articles were included if they were a scientific report of a single study; evaluated a telehealth method; identified the type of wound of focus; and provided data on clinical, healthcare utilization, or cost outcomes of telewound care. In total, 26 articles met these criteria.

DATA EXTRACTION

Data were extracted and grouped into 13 categories, including study design, wound type, telehealth modality, treatment intervention, and outcomes measured, among others.

DATA SYNTHESIS

Of the 26 studies, 19 reported on clinical outcomes including overall healing and healing time; 17 studies reported on healthcare utilization including hospitalizations and length of stay; and 12 studies reported costs.

CONCLUSIONS

Evidence regarding the use of telewound care is weak, and findings related to the impact of telewound care on outcomes are inconsistent but indicate that it is not inferior to in-person care. Greater use of telehealth as a result of the COVID-19 pandemic points to further development of navigation and education models of telehealth for wound care. However, additional studies using rigorous research design and leveraging robust sample sizes are needed to demonstrate value.

Inpatient telehealth experience of limited English proficient patients: a cross-sectional survey and semi-structured interview (Preprint)

Background

Patients with limited English proficiency (LEP) are at a higher risk of poor health outcomes and are less likely to use telehealth than English-speaking patients. To date, there is no formal evaluation of inpatient (IP) telehealth user experience of patients and their families by language preference during visits with their clinicians.

Objective

This study aims to compare the experiences of English- and Spanish-speaking patients and their families using IP telehealth, as well as to evaluate the experience of Spanish interpreters providing services through IP telehealth.

Methods

We prospectively administered a survey to English- and Spanish-speaking patients and their families who used IP telehealth from October 1, 2020, to March 31, 2021. We performed semistructured phone interviews of hospital-based Spanish interpreters who provided services through IP telehealth.

Results

A total of 661 surveys were administered, with completion rates of 18% (112/621) in English and 62% (25/40) in Spanish. On a 10-point scale, the overall satisfaction of Spanish speakers (median 10, IQR 10-10) was higher than that of English speakers (median 9, IQR 8-10; P=.001). Both English- and Spanish-speaking patients used IP telehealth for visits with their primary IP care team, subspecialty consultants, and other clinicians. Hospital tablets were used more often than personal devices, and only English-speaking patients used personal laptops. Patients and their families encountered challenges with log-in, team coordination with multiple users, and equipment availability. Interpreters encountered challenges with audio and video quality, communication, safety, and Wi-Fi access.

Conclusions

Both English- and Spanish-speaking patients reported high satisfaction using IP telehealth across multiple disciplines despite the workflow challenges identified by interpreters. Significant investment is needed to provide robust infrastructure to support use by all patients, especially the integration of multiple users to provide interpreter services for patients with LEP.

Opportunities and challenges in improving antimicrobial use during the era of telehealth expansion: A narrative review

Efforts to improve antimicrobial prescribing are occurring within a changing healthcare landscape, which includes the expanded use of telehealth technology. The wider adoption of telehealth presents both challenges and opportunities for promoting antimicrobial stewardship. Telehealth provides 2 avenues for remote infectious disease (ID) specialists to improve inpatient antimicrobial prescribing: telehealth-supported antimicrobial stewardship and tele-ID consultations. Those 2 activities can work separately or synergistically. Studies on telehealth-supported antimicrobial stewardship have reported a reduction in inpatient antimicrobial prescribing, cost savings related to less antimicrobial use, a decrease in Clostridioides difficile infections, and improved antimicrobial susceptibility patterns for common organisms. Tele-ID consultation is associated with fewer hospital transfers, a shorter length of hospital stay, and decreased mortality. The implementation of these activities can be flexible depending on local needs and available resources, but several barriers may be encountered. Opportunities also exist to improve antimicrobial use in outpatient settings. Telehealth provides a more rapid mechanism for conducting outpatient ID consultations, and increasing use of telehealth for routine and urgent outpatient visits present new challenges for antimicrobial stewardship. In primary care, urgent care, and emergency care settings, unnecessary antimicrobial use for viral acute respiratory tract infections is common during telehealth encounters, as is the case for fact-to-face encounters. For some diagnoses, such as otitis media and pharyngitis, antimicrobials are further overprescribed via telehealth. Evidence is still lacking on the optimal stewardship strategies to improve antimicrobial prescribing during telehealth encounters in ambulatory care, but conventional outpatient stewardship strategies are likely transferable. Further work is warranted to fill this knowledge gap.

Application of telemedicine in infectious diseases

INTRODUCTION

Infectious pathologies can benefit from the application of Telemedicine (TM). This study provides a description of the infectious pathology treated by the Telemedicine Service of the Hospital Central de la Defensa Gómez Ulla (STM-HCDGU).

METHODS

Analysis of the e-consultations made by members of the Armed Forces of Spain displaced to the area of operations in the period between 01/1/2015 and 31/12/2018 who developed symptoms of infectious diseases.

RESULTS

127 infectious diseases were diagnosed, the most frequent being those of respiratory etiology and later malaria. Geographically Africa and embarked contingents were the most significant. It was necessary to evacuate 18 patients to the HCDGU, being the diagnosis of malaria the most frequent reason for evacuation, cause of the only fatal case.

CONCLUSIONS

infectious diseases benefit from the application of TM, being an important tool for the diagnosis and treatment of these, constituting an opportunity to expand to other displaced or remote populations.

Telemedicine in Pediatric Infectious Diseases

Telemedicine is the remote practice of medicine through the use of information and communication technologies for the prevention, diagnosis, treatment and management of diseases. In this narrative review, we illustrate how telemedicine technologies are increasingly integrated into pediatric infectious disease programs with the aim of facilitating access to specialist care and reducing costs. There is widespread use of telemedicine for the management of acute and chronic infectious diseases, particularly in countries in which the majority of the population lives in rural areas, far from third-level hospital centers located in large urban centers. Obviously, telemedicine is also used in developed countries, and its importance has been further increased recently given the COVID-19 pandemic. It has many advantages for patients, such as saving time, money and working hours, and reducing cancelled appointments and delays, while there are also many advantages for doctors, allowing collaborations with specialists and continuous updating. Among the disadvantages are the limitation in carrying out an objective examination, which is particularly important for children under 2 years of age, and the need for cutting-edge technology and reliable connectivity. Telemedicine increasingly represents the future and the beginning of a new healthcare system that also will redefine medical care for the treatment of infectious diseases, both acute and chronic. However, the majority of the experience has involved adults, and its validation in pediatric care, as well as its application in real-life practices, are urgently needed.

The Role of Antibiotic Stewardship and Telemedicine in the Management of Multidrug-Resistant Infections

This article summarizes the literature describing how antimicrobial stewardship and telemedicine interventions affect antimicrobial resistance. Discussion includes why we need stewardship, how to collaborate with team members, and the evidence of stewardship's and telemedicine's impact on resistance.

Rapid Implementation of an Inpatient Telehealth Program during the COVID-19 Pandemic

BACKGROUND

 Relaxation of laws and regulations around privacy and billing during the COVID-19 pandemic provide expanded opportunities to use telehealth to provide patient care at a distance. Many health systems have transitioned to providing outpatient care via telehealth; however, there is an opportunity to utilize telehealth for inpatients to promote physical distancing.

OBJECTIVE

 This article evaluates the use of a rapidly implemented, secure inpatient telehealth program.

METHODS

 We assembled a multidisciplinary team to rapidly design, implement, and iteratively improve an inpatient telehealth quality improvement initiative using an existing videoconferencing system at our academic medical center. We assigned each hospital bed space a unique meeting link and updated the meeting password for each new patient. Patients and families were encouraged to use their own mobile devices to join meetings when possible.

RESULTS

 Within 7 weeks of go-live, we hosted 1,820 inpatient telehealth sessions (13.3 sessions per 100 bedded days). We logged 104,647 minutes of inpatient telehealth time with a median session duration of 22 minutes (range 1-1,961). There were 5,288 participant devices used with a mean of 3 devices per telehealth session (range 2-22). Clinicians found they were able to build rapport and perform a reasonable physical exam.

CONCLUSION

 We successfully implemented and scaled a secure inpatient telehealth program using an existing videoconferencing system in less than 1 week. Our implementation provided an intuitive naming convention for providers and capitalized on the broad availability of smartphones and tablets. Initial comments from clinicians suggest the system was useful; however, further work is needed to streamline initial setup for patients and families as well as care coordination to support clinician communication and workflows. Numerous use cases identified suggest a role for inpatient telehealth will remain after the COVID-19 crisis underscoring the importance of lasting regulatory reform.

Telemedicine Infectious Diseases Consultations and Clinical Outcomes: A Systematic Review

Background

Telemedicine use is increasing in many specialties, but its impact on clinical outcomes in infectious diseases has not been systematically reviewed. We reviewed the current evidence for clinical effectiveness of telemedicine infectious diseases consultations, including outcomes of mortality, hospital readmission, antimicrobial use, cost, length of stay, adherence, and patient satisfaction.

Methods

We queried Ovid MEDLINE 1946-, Embase.com 1947-, Scopus 1823-, Cochrane Database of Systematic Reviews (CDSR), Cochrane Central Register of Controlled Trials (CENTRAL), and ClinicalTrials.gov 1997- through August 5, 2019, for studies looking at clinical outcomes of infectious diseases in the setting of telemedicine use. We did not restrict by language or year of publication. Clinical outcomes searched included 30-day all-cause mortality, 30-day readmissions, patient compliance/adherence, patient satisfaction, cost or cost-effectiveness, length of hospital stay, antimicrobial use, and antimicrobial stewardship. Bias was assessed using standard methodologies. PROSPERO CRD42018105225.

Results

From a search pool of 1154 studies, only 18 involved telemedicine infectious diseases consultation and our selected clinical outcomes. The outcomes tracked were heterogeneous, precluding meta-analysis, and the majority of studies were of poor quality. Overall, clinical outcomes with telemedicine infectious diseases consultation seem comparable to in-person infectious diseases consultation.

Conclusions

Although in widespread use, the clinical effectiveness of telemedicine infectious diseases consultations has yet to be sufficiently studied. Further studies, or publication of previously collected and available data, are warranted to verify the cost-effectiveness of this widespread practice.

Systematic review registration

PROSPERO CRD42018105225.

Successful outpatient parenteral antibiotic therapy delivery via telemedicine

Objectives

Most outpatient parenteral antimicrobial therapy (OPAT) services use a hospital-based model of care in which patients remain in proximity to large hospitals facilitating clinical review. We aimed to evaluate clinical outcomes and complication rates for patients living in geographically isolated locations managed by telemedicine-supported OPAT. Methods: This was a retrospective cohort study.

Results

Between 2011 and 2015, we delivered 88 episodes of care involving 83 adult patients resulting in 2261 days of OPAT. The median age was 56 years, 8 of 83 (10%) were indigenous Australian and the median Charlson comorbidity index score was 2 (IQR 1-4). The median distance of patients' residence from our hospital was 288 km (IQR 201-715) and the median duration on the programme was 26 days (IQR 14-34). Bone and joint infections accounted for 75% of infections treated. Favourable clinical outcomes (improvement or cure) were achieved in 87% of patients and the unplanned, OPAT-related readmission rate was 8%. Nineteen percent and 10% of patients had drug-related and line-related adverse effects, respectively.

Conclusions

Despite a complex case mix, our adverse event and readmission rates are similar to the published literature describing a non-telemedicine model to deliver OPAT. High rates of favourable clinical outcomes and likely cost benefits suggest that telemedicine-supported OPAT is an efficacious and safe substitute for inpatient care in our setting.

eConsultations to Infectious Disease Specialists: Questions Asked and Impact on Primary Care Providers' Behavior

BACKGROUND

Since 2010, the Champlain BASE (Building Access to Specialist Advice through eConsultation) has allowed primary care providers (PCPs) to submit clinical questions to specialists through a secure web service. The study objectives are to describe questions asked to Infectious Diseases specialists through eConsultation and assess impact on physician behaviors.

METHODS

eConsults completed through the Champlain BASE service from April 15, 2013 to January 29, 2015 were characterized by the type of question asked and infectious disease content. Usage data and PCP responses to a closeout survey were analyzed to determine eConsult response time, change in referral plans, and change in planned course of action.

RESULTS

Of the 224 infectious diseases eConsults, the most common question types were as follows: interpretation of a clinical test 18.0% (41), general management 16.5 % (37), and indications/goals of treating a particular condition 16.5% (37). The most frequently consulted infectious diseases were as follows: tuberculosis 14.3% (32), Lyme disease 14.3% (32), and parasitology 12.9% (29). Within 24 hours, 63% of cases responded to the questions, and 82% of cases took under 15 minutes to complete. In 32% of cases, a face-to-face referral was originally planned by the PCP but was no longer needed. In 8% of cases, the PCP referred the patient despite originally not planning to make a referral. In 55% of cases, the PCP either received new information or changed their course of action.

CONCLUSIONS

An eConsult service provides PCPs with timely access to infectious disease specialists' advice that often results in a change in plans for a face-to-face referral.

A cost comparison of travel models and behavioural telemedicine for rural, Native American populations in New Mexico

OBJECTIVE

The purpose of this study was to model the cost of delivering behavioural health services to rural Native American populations using telecommunications and compare these costs with the travel costs associated with providing equivalent care.

METHODS

Behavioural telehealth costs were modelled using equipment, transmission, administrative and IT costs from an established telecommunications centre. Two types of travel models were estimated: a patient travel model and a physician travel model. These costs were modelled using the New Mexico resource geographic information system program (RGIS) and ArcGIS software and unit costs (e.g. fuel prices, vehicle depreciation, lodging, physician wages, and patient wages) that were obtained from the literature and US government agencies.

RESULTS

The average per-patient cost of providing behavioural healthcare via telehealth was US$138.34, and the average per-patient travel cost was US$169.76 for physicians and US$333.52 for patients. Sensitivity analysis found these results to be rather robust to changes in imputed parameters and preliminary evidence of economies of scale was found.

CONCLUSION

Besides the obvious benefits of increased access to healthcare and reduced health disparities, providing behavioural telehealth for rural Native American populations was estimated to be less costly than modelled equivalent care provided by travelling. Additionally, as administrative and coordination costs are a major component of telehealth costs, as programmes grow to serve more patients, the relative costs of these initial infrastructure as well as overall per-patient costs should decrease.

Use of telemedicine technologies in the management of infectious diseases: a review

Telemedicine technologies are rapidly being integrated into infectious diseases programs with the aim of increasing access to infectious diseases specialty care for isolated populations and reducing costs. We summarize the utility and effectiveness of telemedicine in the evaluation and treatment of infectious diseases patients. The use of telemedicine in the management of acute infectious diseases, chronic hepatitis C, human immunodeficiency virus, and active pulmonary tuberculosis is considered. We recapitulate and evaluate the advantages of telemedicine described in other studies, present challenges to adopting telemedicine, and identify future opportunities for the use of telemedicine within the realm of clinical infectious diseases.

Antimicrobial Stewardship Through Telemedicine in a Community Hospital in Southern Brazil

We developed an antimicrobial stewardship programme, based on telemedicine, for a remote community hospital in southern Brazil. Expertise in infectious diseases was provided from a 250-bed tertiary hospital for cardiology patients located 575 km away. At the community hospital, antimicrobial prescriptions were completed via a secure web site. A written reply was sent back to the prescriber by email and SMS text message. During a 4-month study period there were 81 prescriptions for 76 patients. Most antimicrobial prescriptions (67%) were for respiratory infections. Ampicillin was prescribed in 44% of cases ( n = 56), gentamicin in 18% of cases ( n = 23) and azithromycin in 18% of cases ( n = 23). Two infectious diseases specialists independently reviewed each antimicrobial prescription. A total of 41 prescriptions (55%) were considered inappropriate. The median time to obtain a second opinion via the web site was 22 min (interquartile range 12–55). Overall compliance with the recommendations of the infectious diseases specialist was 100% (81 out of 81 requests). Telemedicine appears to have a useful potential role in antimicrobial stewardship programmes.