Douglas Johnson
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Previous Organizations / Institutes
The organizations / institutes from the scholar's other articles in the past ten years
Research Subjects
Douglas Johnson has a total of 29 co-authors. Here are the top co-authors by number of shared publications:
- Amy Pascoe
Respiratory Research @ Alfred, School of Translational Medicine, Monash University, Melbourne, VIC, Australia
1 shared publication - Andrea Driscoll
School of Public Health and Preventive Medicine, Monash University, Melbourne, Vic, Australia; School of Nursing and Midwifery, Deakin University, Geelong, Vic, Australia; Department of Cardiology, Austin Health, Melbourne, Vic, Australia
1 shared publication - Anson V. Koehler
University of Melbourne
1 shared publication - Benjamin Fleming
Department of Neurosurgery, Royal Melbourne Hospital, Parkville, Australia
1 shared publication - Christine Goh
Department of Radiology, Royal Melbourne Hospital, Parkville, Australia
1 shared publication - Daniel Forster
Public Events, COVID-19 Response, Engagement & Delivery, Department of Health, VIC, Melbourne, Australia
1 shared publication
Latest Publications
- Open Access
Validation of a Multi-Channel Ambient Sensor to Measure Vital Signs in Patients Within the Ward and at Home
Hospitalised, unwell patients have vital signs such as heart rate (HR), oxygen saturation (SpO2) and temperature measured multiple times a day to detect clinical deterioration and monitor health trajectories. Advancements in contact-free (ambient) sensors (AS) to measure vital signs can help mitigate risks due to skin injury and infection transmission seen in conventional hospital equipment. This prospective, observational clinical study aims to validate vital sign measurements from a multi-channel AS compared to conventional equipment in three cohorts: patients in a hospital ward, patients at home within a Hospital-at-Home service, and healthy volunteers. Data analysis of 571 paired measurements from 29 participants indicates that heart rate measurements via AS were accurate, though they lacked precision, with the clinical agreement range between 6.38 and 6.49 beats per minute. Temperature and oxygen saturation measurements showed less agreement when compared with the reference standard. In conclusion, ambient sensors show promising utility in measuring vital signs, with this study amongst the first of its kind to utilise this in measuring vital signs in hospitalised patient cohorts in both ward and home environments.
Open AccessValidation of a Multi-Channel Ambient Sensor to Measure Vital Signs in Patients Within the Ward and at Home
Hospitalised, unwell patients have vital signs such as heart rate (HR), oxygen saturation (SpO2) and temperature measured multiple times a day to detect clinical deterioration and monitor health trajectories. Advancements in contact-free (ambient) sensors (AS) to measure vital signs can help mitigate risks due to skin injury and infection transmission seen in conventional hospital equipment. This prospective, observational clinical study aims to validate vital sign measurements from a multi-channel AS compared to conventional equipment in three cohorts: patients in a hospital ward, patients at home within a Hospital-at-Home service, and healthy volunteers. Data analysis of 571 paired measurements from 29 participants indicates that heart rate measurements via AS were accurate, though they lacked precision, with the clinical agreement range between 6.38 and 6.49 beats per minute. Temperature and oxygen saturation measurements showed less agreement when compared with the reference standard. In conclusion, ambient sensors show promising utility in measuring vital signs, with this study amongst the first of its kind to utilise this in measuring vital signs in hospitalised patient cohorts in both ward and home environments.
- 5 December 2022
- Published by Wiley in Medical Journal of Australia
- Vol. 218 (1) , 25-26
Learning from the past to prepare for the future
- 5 December 2022
- Published by Wiley in Medical Journal of Australia
- Vol. 218 (1) , 25-26
Learning from the past to prepare for the future
- 22 November 2022
- Published by Oxford University Press (OUP) in European Journal of Cardiovascular Nursing
- Vol. 22 (7) , 701-708
Impact of a heart failure nurse practitioner service on rehospitalizations, emergency presentations, and survival in patients hospitalized with acute heart failure
Heart failure nurse practitioners (HF NPs) are an emerging component of the heart failure (HF) specialist workforce but their impact in an inpatient setting is untested. The aim of this paper is to explore the impact of an inpatient HF NP service on 12-month all-cause rehospitalizations, emergency department (ED) presentations, and mortality in patients hospitalized with HF compared with usual hospital care. Retrospective, two-group comparative design involving patients (n = 408) admitted via ED with acute HF to a metropolitan quaternary hospital between January 2013 and August 2017. Doubly robust estimation with augmented inverse probability weighting (DR-AIPW) was used to account for the non-random allocation of patients to usual hospital care or the HF NP service in addition to usual in-hospital care. Among 408 patients (186 usual care and 222 HF NP service) admitted with acute HF, the mean age was 76.5 [standard deviation (SD) 12.0] years and 56.4% (n = 230) were male. After IPW adjustment, patients seen by the HF NP service had a lower risk of 12-month rehospitalization (61.3 vs. 78.3% usual care; difference –16.9%, 95% CI: −26.4%, −6.6%) and ED presentations (12.6 vs. 22.0%; difference –9.4%, 95% CI: –17.3%, –1.4%) with no difference in 6- or 12-month mortality. The HF NP service improved referrals to a home visiting programme that was available to HF patients (64.4 vs. 45.4%; difference 19%, 95% CI: 8.8%, 28.8%). Additional support by an inpatient HF NP service has the potential to significantly reduce rehospitalizations and ED presentations over 12 months. Further evidence from a multicentre randomized control trial is warranted.
- 22 November 2022
- Published by Oxford University Press (OUP) in European Journal of Cardiovascular Nursing
- Vol. 22 (7) , 701-708
Impact of a heart failure nurse practitioner service on rehospitalizations, emergency presentations, and survival in patients hospitalized with acute heart failure
Heart failure nurse practitioners (HF NPs) are an emerging component of the heart failure (HF) specialist workforce but their impact in an inpatient setting is untested. The aim of this paper is to explore the impact of an inpatient HF NP service on 12-month all-cause rehospitalizations, emergency department (ED) presentations, and mortality in patients hospitalized with HF compared with usual hospital care. Retrospective, two-group comparative design involving patients (n = 408) admitted via ED with acute HF to a metropolitan quaternary hospital between January 2013 and August 2017. Doubly robust estimation with augmented inverse probability weighting (DR-AIPW) was used to account for the non-random allocation of patients to usual hospital care or the HF NP service in addition to usual in-hospital care. Among 408 patients (186 usual care and 222 HF NP service) admitted with acute HF, the mean age was 76.5 [standard deviation (SD) 12.0] years and 56.4% (n = 230) were male. After IPW adjustment, patients seen by the HF NP service had a lower risk of 12-month rehospitalization (61.3 vs. 78.3% usual care; difference –16.9%, 95% CI: −26.4%, −6.6%) and ED presentations (12.6 vs. 22.0%; difference –9.4%, 95% CI: –17.3%, –1.4%) with no difference in 6- or 12-month mortality. The HF NP service improved referrals to a home visiting programme that was available to HF patients (64.4 vs. 45.4%; difference 19%, 95% CI: 8.8%, 28.8%). Additional support by an inpatient HF NP service has the potential to significantly reduce rehospitalizations and ED presentations over 12 months. Further evidence from a multicentre randomized control trial is warranted.
- Open Access
- 16 December 2021
- Published by MDPI AG in International Journal of Environmental Research and Public Health
- Vol. 18 (24) , 13275
Differences in Coping Strategies and Help-Seeking Behaviours among Australian Junior and Senior Doctors during the COVID-19 Pandemic
Background: Throughout the COVID-19 pandemic, hospital medical staff (HMS) have faced significant personal, workplace, and financial disruption. Many have experienced psychosocial burden, exceeding already concerning baseline levels. This study examines the types and predictors of coping strategies and help-seeking behaviours utilised by Australian junior and senior HMS during the first year of the pandemic. Methods: A cross-sectional online survey of Australian frontline healthcare workers was conducted between 27 August and 23 October 2020. Data collected included demographics, personal and workplace disruptions, self-reported and validated mental health symptoms, coping strategies, and help-seeking. Results: The 9518 participants included 1966 hospital medical staff (62.1% senior, 37.9% junior). Both groups experienced a high burden of anxiety, depression, post-traumatic stress disorder, and burnout. Coping strategies varied by seniority, with maintaining exercise the most common strategy for both groups. Adverse mental health was associated with increased alcohol consumption. Engagement with professional support, although more frequent among junior staff, was uncommon in both groups. Conclusions: Junior and senior staff utilised different coping and help-seeking behaviours. Despite recognition of symptoms, very few HMS engaged formal support. The varied predictors of coping and help-seeking identified may inform targeted interventions to support these cohorts in current and future crises.
- 16 December 2021
- Published by MDPI AG in International Journal of Environmental Research and Public Health
- Vol. 18 (24) , 13275
Open AccessDifferences in Coping Strategies and Help-Seeking Behaviours among Australian Junior and Senior Doctors during the COVID-19 Pandemic
Background: Throughout the COVID-19 pandemic, hospital medical staff (HMS) have faced significant personal, workplace, and financial disruption. Many have experienced psychosocial burden, exceeding already concerning baseline levels. This study examines the types and predictors of coping strategies and help-seeking behaviours utilised by Australian junior and senior HMS during the first year of the pandemic. Methods: A cross-sectional online survey of Australian frontline healthcare workers was conducted between 27 August and 23 October 2020. Data collected included demographics, personal and workplace disruptions, self-reported and validated mental health symptoms, coping strategies, and help-seeking. Results: The 9518 participants included 1966 hospital medical staff (62.1% senior, 37.9% junior). Both groups experienced a high burden of anxiety, depression, post-traumatic stress disorder, and burnout. Coping strategies varied by seniority, with maintaining exercise the most common strategy for both groups. Adverse mental health was associated with increased alcohol consumption. Engagement with professional support, although more frequent among junior staff, was uncommon in both groups. Conclusions: Junior and senior staff utilised different coping and help-seeking behaviours. Despite recognition of symptoms, very few HMS engaged formal support. The varied predictors of coping and help-seeking identified may inform targeted interventions to support these cohorts in current and future crises.
- 2 December 2020
- Published by American Society of Tropical Medicine and Hygiene in The American Journal of Tropical Medicine and Hygiene
- Vol. 103 (6) , 2318-2322
Case Report: Neurocysticercosis Acquired in Australia
Neurocysticercosis (NCC) is a disease caused by infection of the central nervous system with the larval stage of the tapeworm Taenia solium. This disease is endemic in many parts of the world, including Africa, Asia, and Latin America, where animal husbandry practices are common such that pigs reared for human consumption ingest feces from humans infected with T. solium. Neurocysticercosis is rarely acquired in economically affluent regions, including North America, Central Europe, Japan, and Australasia, and in countries where pork consumption is discouraged by religious or social practices. In these countries, NCC is usually diagnosed in immigrants or returning travelers who have spent time in endemic regions. Here, we report a case of NCC in a 25-year-old woman presenting with worsening visual symptoms in association with headache, diagnosed previously as a migraine with visual aura. This person had always lived in Australia and had never traveled overseas to a country endemic for T. solium. The unusual features of the clinical presentation and epidemiology are highlighted to raise physicians’ awareness that attention needs to be paid to the risk of autochthonous infection occurring in non-endemic countries.
- 2 December 2020
- Published by American Society of Tropical Medicine and Hygiene in The American Journal of Tropical Medicine and Hygiene
- Vol. 103 (6) , 2318-2322
Case Report: Neurocysticercosis Acquired in Australia
Neurocysticercosis (NCC) is a disease caused by infection of the central nervous system with the larval stage of the tapeworm Taenia solium. This disease is endemic in many parts of the world, including Africa, Asia, and Latin America, where animal husbandry practices are common such that pigs reared for human consumption ingest feces from humans infected with T. solium. Neurocysticercosis is rarely acquired in economically affluent regions, including North America, Central Europe, Japan, and Australasia, and in countries where pork consumption is discouraged by religious or social practices. In these countries, NCC is usually diagnosed in immigrants or returning travelers who have spent time in endemic regions. Here, we report a case of NCC in a 25-year-old woman presenting with worsening visual symptoms in association with headache, diagnosed previously as a migraine with visual aura. This person had always lived in Australia and had never traveled overseas to a country endemic for T. solium. The unusual features of the clinical presentation and epidemiology are highlighted to raise physicians’ awareness that attention needs to be paid to the risk of autochthonous infection occurring in non-endemic countries.