Alex van Duinen

Dr. Alex van Duinen

orcid

Research Focus & Metrics

Academic Career Length

11Years (2016-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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24 February 2016 in PLOS ONE
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KRKim J. Brolin Ribacke
Kim J. Brolin Ribacke
ADAlex van Duinen
Alex van Duinen
HNHelena Nordenstedt
Helena Nordenstedt
JHJonas Höijer
Jonas Höijer
RMRagnhild Molnes
Ragnhild Molnes
AEAnnaMia Ekström
AnnaMia Ekström
As Sierra Leone celebrates the end of the Ebola Virus Disease (EVD) outbreak, we can begin to fully grasp its impact on already weak health systems. The EVD outbreak in West Africa forced many hospitals to close down or reduce their activity, either to prevent nosocomial transmission or because of staff shortages. The aim of this study is to assess the potential impact of EVD on nationwide access to obstetric care in Sierra Leone. Community health officers collected weekly data between January 2014—May 2015 on in-hospital deliveries and caesarean sections (C-sections) from all open facilities (public, private for-profit and private non-profit sectors) offering emergency obstetrics in Sierra Leone. This was compared to official data of EVD cases per district. Logistic and Poisson regression analyses were used to compute risk and rate estimates. Nationwide, the number of in-hospital deliveries and C-sections decreased by over 20% during the EVD outbreak. The decline occurred early on in the EVD outbreak and was mainly attributable to the closing of private not-for-profit hospitals rather than government facilities. Due to difficulties in collecting data in the midst of an epidemic, limitations of this study include some missing data points. Both the number of in-hospital deliveries and C-sections substantially declined shortly after the onset of the EVD outbreak. Since access to emergency obstetric care, like C-sections, is associated with decreased maternal mortality, many women are likely to have died due to the reduced access to appropriate care during childbirth. Future research on indirect health effects of health system breakdown should ideally be nationwide and continue also into the recovery phase. It is also important to understand the mechanisms behind the deterioration so that important health services can be reestablished.

18 May 2017 in British Journal of Surgery
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Journal Article
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HBH A Bolkan
H A Bolkan
ADAlex van Duinen
Alex van Duinen
BWB Waalewijn
B Waalewijn
MEM Elhassein
M Elhassein
TKT B Kamara
T B Kamara
AWA Wibe
A Wibe
Surgical task-sharing may be central to expanding the provision of surgical care in low-resource settings. The aims of this paper were to describe the set-up of a new surgical task-sharing training programme for associate clinicians and junior doctors in Sierra Leone, assess its productivity and safety, and estimate its future role in contributing to surgical volume. This prospective observational study from a consortium of 16 hospitals evaluated crude in-hospital mortality over 5 years and productivity of operations performed during and after completion of a 3-year surgical training programme. Some 48 trainees and nine graduated surgical assistant community health officers (SACHOs) participated in 27 216 supervised operations between January 2011 and July 2016. During training, trainees attended a median of 822 operations. SACHOs performed a median of 173 operations annually. Caesarean section, hernia repair and laparotomy were the most common procedures during and after training. Crude in-hospital mortality rates after caesarean sections and laparotomies were 0·7 per cent (13 of 1915) and 4·3 per cent (7 of 164) respectively for operations performed by trainees, and 0·4 per cent (5 of 1169) and 8·0 per cent (11 of 137) for those carried out by SACHOs. Adjusted for patient sex, surgical procedure, urgency and hospital, mortality was lower for operations performed by trainees (OR 0·47, 95 per cent c.i. 0·32 to 0·71; P < 0·001) and SACHOs (OR 0·16, 0·07 to 0·41; P < 0·001) compared with those conducted by trainers and supervisors. SACHOs rapidly and safely achieved substantial increases in surgical volume in Sierra Leone.

11 October 2021 in BMJ Global Health
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SSStephen Sevalie
Stephen Sevalie
DYDaniel Youkee
Daniel Youkee
ADAlex van Duinen
Alex van Duinen
EBEmma Bailey
Emma Bailey
TBThaimu Bangura
Thaimu Bangura
ALAndrew J M Leather
Andrew J M Leather
Introduction The COVID-19 pandemic has adversely affected health systems in many countries, but little is known about effects on health systems in sub-Saharan Africa. This study examines the effects of COVID-19 on hospital utilisation in a sub-Saharan country, Sierra Leone. Methods Mixed-methods study using longitudinal nationwide hospital data (admissions, operations, deliveries and referrals) and qualitative interviews with healthcare workers and patients. Hospital data were compared across quarters (Q) in 2020, with day 1 of Q2 representing the start of the pandemic in Sierra Leone. Admissions are reported in total and disaggregated by sex, service (surgical, medical, maternity and paediatric) and hospital type (government or private non-profit). Referrals in 2020 were compared with 2019 to assess whether any changes were the result of seasonality. Comparisons were performed using Student’s t-test. Qualitative data were analysed using thematic analysis. Results From Q1 to Q2, weekly mean hospital admissions decreased by 14.7% (p=0.005). Larger decreases were seen in male 18.8% than female 12.5% admissions. The largest decreases were in surgical admissions, a 49.8% decrease (p<0.001) and medical admissions, a 28.7% decrease (p=0.002). Paediatric and maternity admissions did not significantly change. Total operations decreased by 13.9% (p<0.001), while caesarean sections and facility-based deliveries showed significant increases: 12.7% (p=0.014) and 7.5% (p=0.03), respectively. In Q3, total admissions remained 13.2% lower (p<0.001) than Q1. Mean weekly referrals were lower in Q2 and Q3 of 2020 compared with 2019, suggesting findings were unlikely to be seasonal. Qualitative analysis identified both supply-side factors, prioritisation of essential services, introduction of COVID-19 services and pausing elective care, and demand-side factors, fear of nosocomial infection and financial hardship. Conclusion The study demonstrated a decrease in hospital utilisation during COVID-19, the decrease is less than reported in other countries during COVID-19 and less than reported during the Ebola epidemic.

21 December 2020 in BMJ Global Health
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Journal Article
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ADAlex van Duinen
Alex van Duinen
HAHåvard A Adde
Håvard A Adde
OFOla Fredin
Ola Fredin
HHHampus Holmer
Hampus Holmer
LHLars Hagander
Lars Hagander
HBHåkon A Bolkan
Håkon A Bolkan
Introduction: Longer travel times are associated with increased adverse maternal and perinatal outcomes. Geospatial modelling has been increasingly used to estimate geographic proximity in emergency obstetric care. In this study, we aimed to assess the correlation between modelled and patient-reported travel times and to evaluate its clinical relevance. Methods: Women who delivered by caesarean section in nine hospitals were followed up with home visits at 1 month and 1 year. Travel times between the location before the delivery and the facility where caesarean section was performed were estimated, based on two models (model I Ouma et al; model II Munoz et al). Patient-reported and modelled travel times were compared applying a univariable linear regression analysis, and the relation between travel time and perinatal mortality was assessed. Results: The median reported travel time was 60 min, compared with 13 and 34 min estimated by the two models, respectively. The 2-hour access threshold correlated with a patient-reported travel time of 5.7 hours for model I and 1.8 hours for model II. Longer travel times were associated with transport by boat and ambulance, visiting one or two facilities before reaching the final facility, lower education and poverty. Lower perinatal mortality was found both in the group with a reported travel time of 2 hours or less (193 vs 308 per 1000 births, p<0.001) and a modelled travel time of 2 hours or less (model I: 209 vs 344 per 1000 births, p=0.003; model II: 181 vs 319 per 1000 births, p<0.001). Conclusion: The standard model, used to estimate geographical proximity, consistently underestimated the travel time. However, the conservative travel time model corresponded better to patient-reported travel times. The 2-hour threshold as determined by the Lancet Commission on Global Surgery, is clinically relevant with respect to reducing perinatal death, not a clear cut-off.

8 January 2019 in British Journal of Surgery
Verified
Journal Article
Open access
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ADAlex van Duinen
Alex van Duinen
MKM. M. Kamara
M. M. Kamara
LHL. Hagander
L. Hagander
TAT. Ashley
T. Ashley
AKA. P. Koroma
A. P. Koroma
HBH A Bolkan
H A Bolkan
Background: Many countries lack sufficient medical doctors to provide safe and affordable surgical and emergency obstetric care. Task-sharing with associate clinicians (ACs) has been suggested to fill this gap. The aim of this study was to assess maternal and neonatal outcomes of caesarean sections performed by ACs and doctors. Methods: All nine hospitals in Sierra Leone where both ACs and doctors performed caesarean sections were included in this prospective observational multicentre non-inferiority study. Patients undergoing caesarean section were followed for 30 days. The primary outcome was maternal mortality, and secondary outcomes were perinatal events and maternal morbidity. Results: Between October 2016 and May 2017, 1282 patients were enrolled in the study. In total, 1161 patients (90·6 per cent) were followed up with a home visit at 30 days. Data for 1274 caesarean sections were analysed, 443 performed by ACs and 831 by doctors. Twin pregnancies were more frequently treated by ACs, whereas doctors performed a higher proportion of operations outside office hours. There was one maternal death in the AC group and 15 in the doctor group (crude odds ratio (OR) 0·12, 90 per cent confidence interval 0·01 to 0·67). There were fewer stillbirths in the AC group (OR 0·74, 0·56 to 0·98), but patients were readmitted twice as often (OR 2·17, 1·08 to 4·42). Conclusion: Caesarean sections performed by ACs are not inferior to those undertaken by doctors. Task-sharing can be a safe strategy to improve access to emergency surgical care in areas where there is a shortage of doctors.

1 July 2021 in Surgery
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Journal Article
Closed access
BLBarbro Lindheim-Minde
Barbro Lindheim-Minde
AGAndreas Gjøra
Andreas Gjøra
JBJuul M. Bakker
Juul M. Bakker
ADAlex van Duinen
Alex van Duinen
DLDaniel van Leerdam
Daniel van Leerdam
HBHåkon A. Bolkan
Håkon A. Bolkan