David Sommerfield

Dr. David Sommerfield

orcid

Research Focus & Metrics

Academic Career Length

10Years (2017-Present)

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

Representative Publications

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12 December 2021 in Pediatric Anesthesia
Verified
Journal Article
Closed access
PDF file
JHJustin Hii
Justin Hii
TTT Wesley Templeton
T Wesley Templeton
DSDavid Sommerfield
David Sommerfield
ASAine Sommerfield
Aine Sommerfield
CMClyde T Matava
Clyde T Matava
BUBritta Sylvia von Ungern-Sternberg
Britta Sylvia von Ungern-Sternberg

17 October 2022 in Pediatric Anesthesia
Verified
Journal Article
Open access
ASAine Sommerfield
Aine Sommerfield
DSDavid Sommerfield
David Sommerfield
EBEmily Bell
Emily Bell
SHSusan Humphreys
Susan Humphreys
FTFiona Taverner
Fiona Taverner
BUBritta Sylvia von Ungern-Sternberg
Britta Sylvia von Ungern-Sternberg
Background: Consumer‐driven research is increasingly being prioritized.Aim: Our aim was to partner with consumers to identify the top 10 research priorities for pediatric anesthesia and perioperative medicine. The ACORN (Anesthesia Consumer Research Network) was formed to collaborate with children and families across Australia.Methods: A prospective online survey was developed to generate research ideas from consumers. The survey was developed in Qualtrics, a survey research platform. Consumers were invited to participate through poster advertising, social media posts, via consumer networks at participating hospitals and in addition 35 national consumer/patient representative organizations were approached. We also conducted a similar idea generating survey for clinicians through email invitation and via Twitter. A second round of surveys was conducted to prioritize the long list of research questions and a shortlist of priorities developed. A single consensus meeting was held, and a final consensus list of top 10 priorities emerged.Results: A total of 281 research ideas were submitted between 356 consumers in the idea generating survey and from four consumer/patient representative groups. Seventy‐five clinicians responded to the clinician idea generation survey. This was consolidated into 20 research ideas/themes for the second survey for each group. 566 responses were received to the consumer prioritization top 10 survey and 525 responses to the clinician survey. The consensus meeting produced the final 10 consumer research priorities.Conclusion: This study has given Australian consumers the opportunity to shape the anesthesia and perioperative medicine research agenda for pediatric patients both nationally and internationally.

19 November 2021 in Pediatric Anesthesia
Verified
Journal Article
Closed access
PDF file
SBSuze Bruins
Suze Bruins
DSDavid Sommerfield
David Sommerfield
NPNeil Powers
Neil Powers
BUBritta Sylvia von Ungern-Sternberg
Britta Sylvia von Ungern-Sternberg


3 May 2022 in Anesthesiology
Verified
Journal Article
Closed access
PDF file
KYKai Yuan
Kai Yuan
TXTing Xu
Ting Xu
JSJustin Skowno
Justin Skowno
BZBingqing Zhang
Bingqing Zhang
ADAndrew Davidson
Andrew Davidson
FIfor the BRAIN Collaborative Investigators
for the BRAIN Collaborative Investigators
Background: Intraoperative isoelectric electroencephalography (EEG) has been associated with hypotension and postoperative delirium in adults. This international prospective observational study sought to determine the prevalence of isoelectric EEG in young children during anesthesia. The authors hypothesized that the prevalence of isoelectric events would be common worldwide and associated with certain anesthetic practices and intraoperative hypotension. Methods: Fifteen hospitals enrolled patients age 36 months or younger for surgery using sevoflurane or propofol anesthetic. Frontal four-channel EEG was recorded for isoelectric events. Demographics, anesthetic, emergence behavior, and Pediatric Quality of Life variables were analyzed for association with isoelectric events. Results: Isoelectric events occurred in 32% (206 of 648) of patients, varied significantly among sites (9 to 88%), and were most prevalent during pre-incision (117 of 628; 19%) and surgical maintenance (117 of 643; 18%). Isoelectric events were more likely with infants younger than 3 months (odds ratio, 4.4; 95% CI, 2.57 to 7.4; P < 0.001), endotracheal tube use (odds ratio, 1.78; 95% CI, 1.16 to 2.73; P = 0.008), and propofol bolus for airway placement after sevoflurane induction (odds ratio, 2.92; 95% CI, 1.78 to 4.8; P < 0.001), and less likely with use of muscle relaxant for intubation (odds ratio, 0.67; 95% CI, 0.46 to 0.99; P = 0.046]. Expired sevoflurane was higher in patients with isoelectric events during preincision (mean difference, 0.2%; 95% CI, 0.1 to 0.4; P = 0.005) and surgical maintenance (mean difference, 0.2%; 95% CI, 0.1 to 0.3; P = 0.002). Isoelectric events were associated with moderate (8 of 12, 67%) and severe hypotension (11 of 18, 61%) during preincision (odds ratio, 4.6; 95% CI, 1.30 to 16.1; P = 0.018) (odds ratio, 3.54; 95% CI, 1.27 to 9.9; P = 0.015) and surgical maintenance (odds ratio, 3.64; 95% CI, 1.71 to 7.8; P = 0.001) (odds ratio, 7.1; 95% CI, 1.78 to 28.1; P = 0.005), and lower Pediatric Quality of Life scores at baseline in patients 0 to 12 months (median of differences, –3.5; 95% CI, –6.2 to –0.7; P = 0.008) and 25 to 36 months (median of differences, –6.3; 95% CI, –10.4 to –2.1; P = 0.003) and 30-day follow-up in 0 to 12 months (median of differences, –2.8; 95% CI, –4.9 to 0; P = 0.036). Isoelectric events were not associated with emergence behavior or anesthetic (sevoflurane vs. propofol). Conclusions: Isoelectric events were common worldwide in young children during anesthesia and associated with age, specific anesthetic practices, and intraoperative hypotension. Editor’s Perspective: What We Already Know about This Topic: What This Article Tells Us That Is New:

2 August 2023 in Pediatric Anesthesia
Verified
Journal Article
Open access
EZEileen Zhang
Eileen Zhang
NHNeil Hauser
Neil Hauser
ASAine Sommerfield
Aine Sommerfield
DSDavid Sommerfield
David Sommerfield
BUBritta Sylvia von Ungern-Sternberg
Britta Sylvia von Ungern-Sternberg
Fasting for surgery is a routine step in the preoperative preparation for surgery. There have however been increasing concerns with regard to the high incidence of prolonged fasting in children, and the subsequent psycho‐social distress and physiological consequences that this poses. Additionally, the past few years have yielded new research that has shown significant inter‐individual variation in gastric emptying regardless of the length of the fast, with some patients still having residual gastric contents even after prolonged fasts. Additionally, multiple large‐scale studies have shown no long‐term sequalae from clear fluid aspiration, although two deaths from aspiration have been reported within the large Wake Up Safe cohort. This has led to a change in the recommended clear fluid fasting times in multiple international pediatric societies; similarly, many societies continue to recommend traditional fasting times. Multiple fasting strategies exist in the literature, though these have mostly been studied and implemented in the adult population. This review hopes to summarize the recent updates in fasting guidelines, discuss the issues surrounding prolonged fasting, and explore potential tolerance strategies for children.