Cynthia Garvan

Prof. Cynthia Garvan


Research Focus & Metrics

Academic Career Length

21Years (2006-Present)

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

Representative Publications

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10 May 2024 in Journal of Medical Internet Research
Verified
Journal Article
Open access
LZLicong Zhao
Licong Zhao
HAHeather Agazzi
Heather Agazzi
YDYasong Du
Yasong Du
HMHongdao Meng
Hongdao Meng
RMRenya Maku
Renya Maku
FFFeng Shuan Fang
Feng Shuan Fang
Background: Attention-deficit/hyperactivity disorder (ADHD) is one of the most common neurodevelopmental disorders among children. Pharmacotherapy has been the primary treatment for ADHD, supplemented by behavioral interventions. Digital and exercise interventions are promising nonpharmacologic approaches for enhancing the physical and psychological health of children with ADHD. However, the combined impact of digital and exercise therapies remains unclear. Objective: The aim of this study was to determine whether BrainFit, a novel digital intervention combining gamified cognitive and exercise training, is efficacious in reducing ADHD symptoms and executive function (EF) among school-aged children with ADHD. Methods: This 4-week prospective randomized controlled trial included 90 children (6-12 years old) who visited the ADHD outpatient clinic and met the diagnostic criteria for ADHD. The participants were randomized (1:1) to the BrainFit intervention (n=44) or a waitlist control (n=46) between March and August 2022. The intervention consisted of 12 30-minute sessions delivered on an iPad over 4 weeks with 3 sessions per week (Monday, Wednesday, and Friday after school) under the supervision of trained staff. The primary outcomes were parent-rated symptoms of attention and hyperactivity assessed according to the Swanson, Nolan, and Pelham questionnaire (SNAP-IV) rating scale and EF skills assessed by the Behavior Rating Inventory of Executive Function (BRIEF) scale, evaluated pre and post intervention. Intention-to-treat analysis was performed on 80 children after attrition. A nonparametric resampling-based permutation test was used for hypothesis testing of intervention effects. Results: Among the 145 children who met the inclusion criteria, 90 consented and were randomized; ultimately, 80 (88.9%) children completed the study and were included in the analysis. The participants’ average age was 8.4 (SD 1.3) years, including 63 (78.8%) male participants. The most common ADHD subtype was hyperactive/impulsive (54/80, 68%) and 23 (29%) children had severe symptoms. At the endpoint of the study, the BrainFit intervention group had a significantly larger improvement in total ADHD symptoms (SNAP-IV total score) as compared to those in the control group (β=–12.203, 95% CI –17.882 to –6.523; P<.001), owing to lower scores on the subscales Inattention (β=–3.966, 95% CI –6.285 to –1.647; P<.001), Hyperactivity/Impulsivity (β=–5.735, 95% CI –8.334 to –3.137; P<.001), and Oppositional Defiant Disorder (β=–2.995, 95% CI –4.857 to –1.132; P=.002). The intervention was associated with significant reduction in the Metacognition Index (β=–6.312, 95% CI –10.973 to –1.650; P=.006) and Global Executive Composite (β=–5.952, 95% CI –10.214 to –1.690; P=.003) on the BRIEF. No severe intervention-related adverse events were reported. Conclusions: This novel digital cognitive-physical intervention was efficacious in school-age children with ADHD. A larger multicenter effectiveness trial with longer follow-up is warranted to confirm these findings and to assess the durability of treatment effects. Trial Registration: Chinese Clinical Trial Register ChiCTR2300070521; https://www.chictr.org.cn/showproj.html?proj=177806

18 April 2022 in The Spine Journal
Verified
Journal Article
Closed access
KPKen Porche
Ken Porche
SYSandra Yan
Sandra Yan
BMBasma Mohamed
Basma Mohamed
CGCynthia Garvan
Cynthia Garvan
RSRonny Samra
Ronny Samra
DHDaniel J. Hoh
Daniel J. Hoh

6 October 2020 in ASAIO Journal
Verified
Journal Article
Closed access
DMDesiree S. Machado
Desiree S. Machado
CGCynthia Garvan
Cynthia Garvan
JPJoseph Philip
Joseph Philip
DHDonald Harrington
Donald Harrington
Bruce Davis SpiessBruce Davis Spiess
Bruce Davis Spiess
MBMark S. Bleiweis
Mark S. Bleiweis
We retrospectively compared anticoagulation with heparin and bivalirudin for 32 consecutive children under 18 years old during extracorporeal membrane oxygenation (ECMO) in our pediatric cardiac intensive care unit (PCICU). Between September 2015 and January 2018, 14 patients received heparin, 13 venoarterial (VA), and 1 venovenous (VV). From February 2018 to September 2019, 18 received bivalirudin (all VA). The mean (standard deviation [SD]) percentage of time with therapeutic activated partial thromboplastin time and activated clotting time was bivalirudin 54 (14%) and heparin 57 (11%), p = 0.4647, and percentage of time supratherapeutic was bivalirudin 18 (10%) and heparin 27 (12%), p = 0.0238. Phlebotomy-associated blood loss per hour of ECMO was double in the heparin compared with bivalirudin group 1.08 ml/h (0.20 ml/h), compared with 0.51 ml/h (0.07 ml/h), p = 0.0003, as well as interventions to control bleeding. Packed red blood cell (PRBC) transfusions significantly correlated with higher blood loss in the heparin group (Pearson correlation coefficient = 0.49, p = 0.0047). Overall amount of blood product utilization was not different between the groups. Survival to ECMO decannulation was 89% for bivalirudin and 57% for heparin, p = 0.0396, although 6 month survival was not significantly different (67% versus 57%, p = 0.5809). Heparin may increase the need for PRBC transfusions and strategies to attenuate bleeding when compared with bivalirudin for children receiving ECMO in PCICU.

30 December 2008 in Assessment
Verified
Journal Article
Open access
PDF file
DMDesiree W. Murray
Desiree W. Murray
RBRegina Bussing
Regina Bussing
MFMelanie Fernandez
Melanie Fernandez
WHWei Hou
Wei Hou
CGCynthia Garvan
Cynthia Garvan
SESheila M. Eyberg
Sheila M. Eyberg
This study examines the basic psychometric properties of the Swanson, Kotkin, Agler, M-Flynn, and Pelham Scale (SKAMP), a measure intended to assess functional impairment related to attention deficit hyperactivity disorder, in a sample of 1,205 elementary students. Reliability, factor structure, and convergent, discriminant and predictive validity are evaluated. Results provide support for two separate but related subscales, Attention and Deportment, and provide evidence that the SKAMP predicts school functioning above and beyond symptoms alone. Boys, African American children, and children living in poverty are rated as having higher impairment scores than girls, Caucasian children, and more advantaged peers. Norm-referenced data are provided by gender, race, and parental concern level. This study supports the reliability and validity of the SKAMP in a large, diverse community sample and broadens its clinical utility.

25 August 2021 in Antioxidants
Verified
Journal Article
Open access
PDF file
KFKai Fu
Kai Fu
CGCynthia Garvan
Cynthia Garvan
SHShelley C. Heaton
Shelley C. Heaton
NNNandakumar Nagaraja
Nandakumar Nagaraja
Sylvain DoreSylvain Dore
Sylvain Dore
Intracerebral hemorrhage (ICH) is the second most common subtype of stroke, and it is often associated with a high mortality rate and significant morbidity among survivors. Recent studies have shown that bilirubin, a product of heme metabolism, can exhibit cytoprotective, antioxidant and, anti-inflammatory properties. However, little is known about the role of bilirubin in combating several pathophysiological pathways caused by intracerebral bleeding in patients with ICH. In this study, data were collected retrospectively on 276 patients with ICH who were admitted to a university hospital between 5 January 2014 and 31 December 2017. We assessed the relationship between levels of total, direct, and indirect serum bilirubin and assessments of initial stroke severity and clinical outcomes by using Spearman’s rank correlation and Kruskal-Wallis H tests. A secondary examination of the carrier protein albumin was also undertaken. Our study found that higher levels of direct bilirubin were correlated with worse admission Glasgow Coma Scales (GCS) (rs = −0.17, p = 0.011), worse admission ICH Scores (rs = 0.19, p = 0.008), and worse discharge modified Rankin Scales (mRS) (rs = 0.15, p = 0.045). Direct bilirubin was still significantly correlated with discharge mRS after adjusting for temperature at admission (rs = 0.16, p = 0.047), oxygen saturation at admission (rs = 0.15, p = 0.048), white blood cell count (rs = 0.18, p = 0.023), or Troponin T (rs = 0.25, p = 0.001) using partial Spearman’s correlation. No statistical significance was found between levels of total or indirect bilirubin and assessments of stroke severity and outcomes. In contrast, higher levels of albumin were correlated with better admission GCS (rs = 0.13, p = 0.027), discharge GCS (rs = 0.15, p = 0.013), and discharge mRS (rs = −0.16, p = 0.023). We found that levels of total bilirubin, direct bilirubin, and albumin were all significantly related to discharge outcomes classified by discharge destinations (p = 0.036, p = 0.014, p = 0.016, respectively; Kruskal-Wallis H tests). In conclusion, higher direct bilirubin levels were associated with greater stroke severity at presentation and worse outcomes at discharge among patients with ICH. Higher levels of albumin were associated with lower stroke severity and better clinical outcomes. Future prospective studies on the free bioactive bilirubin are needed to better understand the intricate relationships between bilirubin and ICH.

5 May 2021 in Nutrients
Verified
Journal Article
Open access
PDF file
SPSteven Pratscher
Steven Pratscher
AMAngela M. Mickle
Angela M. Mickle
JMJohn G. Marks
John G. Marks
HRHarold Rocha
Harold Rocha
FBFelix Bartsch
Felix Bartsch
KSKimberly T. Sibille
Kimberly T. Sibille
Chronic pain affects mental and physical health and alters brain structure and function. Interventions that reduce chronic pain are also associated with changes in the brain. A number of non-invasive strategies can promote improved learning and memory and increase neuroplasticity in older adults. Intermittent fasting and glucose administration represent two such strategies with the potential to optimize the neurobiological environment to increase responsiveness to recognized pain treatments. The purpose of the pilot study was to test the feasibility and acceptability of intermittent fasting and glucose administration paired with a recognized pain treatment activity, relaxation and guided imagery. A total of 32 adults (44% W, 56% M), 50 to 85 years of age, with chronic knee pain for three months or greater participated in the study. Four sessions were completed over an approximate two-week period. Findings indicate the ability to recruit, randomize, and retain participants in the protocol. The procedures and measures were reasonable and completed without incident. Participant adherence was high and exit interview feedback positive. In summary, the pilot study was feasible and acceptable, providing the evidence necessary to move forward with a larger clinical trial.