Bacterial infections of the oropharynx and deep neck spaces: an investigation of changes in presentation patterns during the COVID-19 pandemic.

BACKGROUND: The aim of this study was to investigate whether changes in practice during the COVID-19 pandemic altered clinical presentation characteristics among adults with bacterial throat infections. METHODS: A retrospective cohort study was conducted that included adult patients presenting with bacterial oropharyngeal infections to a tertiary level hospital in Melbourne, Australia. All patients presenting during the first phase of COVID-19 lockdown in Melbourne (1st April- 1st July in 2020), and those from the same period 12-months prior, were included. RESULTS: There were fewer presentations of bacterial throat infections during the pandemic period compared to the same time 1 year prior. There was a significantly reduced proportion of patients on oral antibiotics prior to their presentation in 2020, as compared to the same period 12-months earlier (30% vs. 50%, respectively; P < 0.01), as well as a significant increase in the length of time patients were symptomatic before presenting to hospital (5 days vs. 4 days, respectively; P < 0.01). Despite this, there was no significant increase in the number of representations post discharge from hospital, or the length of hospital admission. CONCLUSION: The overall number of patients presenting with tonsillitis, pharyngitis, peritonsillar abscess and deep neck space infection were reduced during the pandemic period. Patients experienced symptoms for a longer period of time and fewer were on antimicrobial therapy prior to presentation. This study highlights a shift towards delayed patient presentation and reduced oral antibiotic commencement in cases of oropharyngeal infections as a result of the COVID-19 pandemic.

Planning for a pandemic: Mitigating risk to radiation therapy service delivery in the COVID-19 era.

The novel coronavirus (COVID-19) has rapidly impacted all of our lives following its escalation to pandemic status on 11 March 2020. Government guidelines and restrictions implemented to mitigate the risk of COVID-19 community transmission have forced radiation therapy departments to promptly adjust to the significant impact on our ability to deliver best clinical care. The inherent nature of our tri-partied professions relies heavily on multidisciplinary teamwork and patient-clinician interactions. Teamwork and patient interaction are critical to the role of a radiation therapist. The aim of this paper is to describe the experience of the Peter MacCallum Cancer Centre's (Peter Mac) radiation therapy services during the preliminary stages of the COVID-19 pandemic in minimising risk to patients, staff and our clinical service. Four critical areas were identified in developing risk mitigation strategies across our service: (a) Workforce planning, (b) Workforce communication, (c) Patient safety and wellbeing, and (d) Staff safety and wellbeing. Each of these initiatives had a focus on continuum of clinical care, whilst minimising risk of cross infection for our radiation therapy workforce and patients alike. Initiatives included, but were not limited to, establishing COVID-Eclipse clinical protocols, remote access to local applications, implementation of Microsoft Teams, personal protective equipment (PPE) guidelines and virtual 'Division of Radiation Oncology' briefing/updates. The COVID-19 pandemic has dictated change in conventional radiation therapy practice. It is hoped that by sharing our experiences, the radiation therapy profession will continue to learn, adapt and navigate this period together, to ensure optimal outcomes for ourselves and our patients.

Review of epiglottitis in the post Haemophilus influenzae type-b vaccine era.

BACKGROUND: This study reviewed the demographics, presentation, management, complications and outcomes of acute epiglottitis post Haemophilus influenzae type-b vaccine introduction in Australia. METHODS: Retrospective review of acute epiglottitis at four Victorian tertiary centres from 2011 to 2016 was conducted. Patient characteristics, presentation, investigations, management, complications and outcomes were recorded. Subgroup analysis aiming to identify risk factors for patients requiring acute airway management was performed. RESULTS: Eighty-seven adult and six paediatric cases were identified. The most frequent clinical findings in adults were sore throat (88.5%), dysphagia (71.3%), odynophagia (57.5%), dysphonia (56.3%) and fever (55.2%); 75.9% required intensive care unit admission. Airway compromise requiring intubation occurred in 27.6%, with 12.5% of these patients undergoing emergency surgical airways. Stridor, hypoxia, shortness of breath, odynophagia and lymphadenopathy were statistically more frequent amongst cases requiring airway intervention (P < 0.05). Cultures revealed mixed results with no aetiological pattern. H. influenzae type-b was never cultured. Amongst paediatric cases, fever, tachycardia and stridor were frequently observed and all were admitted to intensive care unit. Two of six required intubation and one underwent surgical intervention. There were no deaths, but one patient suffered a hypoxic brain injury. CONCLUSION: Modern epiglottitis is not the disease previously encountered by clinicians. With changing demographics and varying organisms, management is adapting to reflect this. Complications are rare, and symptomatology at presentation aids earlier recognition of patients who may require airway protection.

A fingerprint orientation model based on 2D Fourier expansion (FOMFE) and its application to singular-point detection and fingerprint indexing.

In this paper, we have proposed a fingerprint orientation model based on 2D Fourier expansions (FOMFE) in the phase plane. The FOMFE does not require prior knowledge of singular points (SPs). It is able to describe the overall ridge topology seamlessly, including the SP regions, even for noisy fingerprints. Our statistical experiments on a public database show that the proposed FOMFE can significantly improve the accuracy of fingerprint feature extraction and thus that of fingerprint matching. Moreover, the FOMFE has a low-computational cost and can work very efficiently on large fingerprint databases. The FOMFE provides a comprehensive description for orientation features, which has enabled its beneficial use in feature-related applications such as fingerprint indexing. Unlike most indexing schemes using raw orientation data, we exploit FOMFE model coefficients to generate the feature vector. Our indexing experiments show remarkable results using different fingerprint databases.