Publications by authors named "Dionne A"

Background: Adjuvant endocrine therapy (AET) is prescribed for 5-10 years to women with hormone-sensitive breast cancer to prevent recurrence. However, a significant proportion of women do not adhere to AET. We developed SOIE, a one-year program designed to enhance the AET experience and adherence.

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Background: An accurate knowledge of a patient's risk of cord-level intraoperative neuromonitoring (IONM) data loss is important for an informed decision-making process prior to deformity correction, but no prediction tool currently exists.

Methods: A total of 1,106 patients with spinal deformity and 205 perioperative variables were included. A stepwise machine-learning (ML) approach using random forest (RF) analysis and multivariable logistic regression was performed.

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Importance: Multisystem inflammatory syndrome in children (MIS-C) is a life-threatening complication of COVID-19 infection. Data on midterm outcomes are limited.

Objective: To characterize the frequency and time course of cardiac dysfunction (left ventricular ejection fraction [LVEF] <55%), coronary artery aneurysms (z score ≥2.

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Purpose: To compare the long-term outcomes among AIS (10-18 years) and young AdIS (YAdIS) (19-40 years) patients with minimum 2 year follow up.

Methods: A retrospective review of AIS and YAdIS patients who underwent primary corrective surgery at a single center was conducted. Demographic, radiographic, operative data, patient reported outcome measures (PROMs), including the ODI and SRS-22r, and long-term complications were collected.

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Background: While clinical overlap between Kawasaki disease (KD) and multisystem inflammatory syndrome in children (MIS-C) has been evident, information regarding those presenting with shock has been limited. We sought to determine associations with shock within and between diagnosis groups.

Methods: The International KD Registry enrolled contemporaneous patients with either KD or MIS-C from 39 sites in 7 countries from January 1, 2020, to January 1, 2023.

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Article Synopsis
  • - The study examined the occurrence of thromboembolic complications in young patients (under 25) with atrial fibrillation (AFib) or atrial flutter (AFl) and analyzed how anticoagulation is practiced in this group across multiple medical centers from 2000 to 2019.
  • - Among 210 patients with 311 episodes of AFib/AFl, 12 episodes were linked to blood clots, predominantly in patients with structural heart disease, while only 34% were discharged on aspirin and 27% on anticoagulants.
  • - The findings indicate that while thromboembolic events can occur in this age group, they are generally rare after treatment like cardioversion, and the CH
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Early activity-based therapy (E-ABT) has the potential to decrease complications and radically improve neurofunctional recovery following traumatic spinal cord injury (TSCI). Unfortunately, E-ABT after TSCI has never been attempted in humans due to practical obstacles and potential safety concerns. This study aims to report on the safety and feasibility outcomes of the Protocol for Rapid Onset of Mobilization in Patients with Traumatic SCI (PROMPT-SCI) trial: the first-ever trial of E-ABT in critically ill patients who suffered a severe TSCI.

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Article Synopsis
  • The CAMP study is an ongoing research project aiming to assess the mid- and long-term effects of myocarditis and pericarditis following the Pfizer-BioNTech COVID-19 vaccine in patients under 21.
  • It involves a cohort of at least 200 vaccinated patients and a comparison group of 100 patients with COVID-19 related myocarditis, collecting data over a 5-year span to track health outcomes and complications.
  • As of October 16, 2024, the study has enrolled 273 participants, focusing on heart function, complications, and overall quality of life post-illness.
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Study Design: Cross-sectional Cohort Study.

Objective: To determine the cervicothoracic inflection point in an asymptomatic, adult population.

Introduction: The cervicothoracic inflection point (CTIP) is an important sagittal marker to understand for patients with cervical deformities.

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  • Postoperative atrioventricular block requiring pacemaker (AVB/PM) affects 14% to 25% of patients undergoing complex biventricular repair for congenital heart disease, especially those with heterotaxy syndrome.
  • This study explored the safety and effectiveness of intraoperative His bundle (HB) mapping to reduce the incidence of AVB/PM during these procedures.
  • Results showed that mapping significantly lowered AVB/PM rates in certain groups, while also highlighting the need for ongoing advancements in mapping technology for those still at risk.
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Objectives: Giant coronary artery aneurysms are rare but potentially fatal complications of Kawasaki disease. The lack of evidence-based recommendations on their management and treatment cause guidelines and practices to differ. We aimed to assess these variations.

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Revascularization of renal artery stenosis became less common following randomized controlled trials that failed to demonstrate benefit in low-risk patients. An 88-year-old patient with recurrent acute pulmonary edema and progressive kidney disease in the setting of high-grade renal artery stenosis, a phenotype excluded from these trials, underwent revascularization.

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Introduction: Supraventricular tachycardia (SVT) is a common pediatric arrhythmia. Beta blockers (BBs) and calcium channel blockers (CCBs) are used for treatment despite little data examining their use. We describe the prescriptive tendencies, efficacy, and tolerability of BBs and CCBs used in the treatment of pediatric SVT.

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Background: Clinical trials and registry studies are essential for advancing research and developing novel treatments. However, these studies rely on manual entry of thousands of variables for each patient. Repurposing real-world data can significantly simplify the data collection, reduce transcription errors, and make the data entry process more efficient, consistent, and cost-effective.

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Article Synopsis
  • Postoperative arrhythmias are typically temporary and treated with medication, but some patients need further procedures like electrophysiology study (EPS) and ablation.
  • This study reviewed cases from 2000-2021 to assess the effectiveness and safety of early EPS and ablation in congenital heart surgery patients, focusing on outcomes, complications, and long-term arrhythmia recurrence.
  • Of the nearly 29,000 surgeries, only 50 patients (some within 3 months and others from 3-12 months post-surgery) required EPS, showing an 82% success rate, though 54% experienced recurring arrhythmias, albeit with less severity.
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Dobutamine stress cardiac magnetic resonance (dsCMR) has demonstrated value in identifying patients at risk for adverse cardiovascular events in adults with coronary artery disease, but its prognostic value in younger patients is unknown. This study sought to evaluate the relationship between dsCMR results and the risk of subsequent cardiovascular events in children. Patients age < 23 years who underwent dsCMR at Boston Children's Hospital were eligible for inclusion.

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Background: The proportion of patients with American Spinal Injury Association Impairment Scale (AIS) grade D traumatic spinal cord injuries (tSCI) is increasing. Although initial motor deficits can be relatively mild, some individuals fail to recover functional independence.

Objectives: This study aims to identify factors associated with failure to reach complete functional independence after AIS grade D tSCI.

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Purpose: To determine if an improvement in cord-level intraoperative neuromonitoring (IONM) data following data loss results in a reduced risk for new postoperative motor deficit in pediatric and adult spinal deformity surgery.

Methods: A consecutive series of 1106 patients underwent spine surgery from 2015 to 2023 by a single surgeon. Cord alerts were defined by Somatosensory-Evoked Potentials (SSEP; warning criteria: 10% increase in latency or > 50% loss in amplitude) and Motor-Evoked Potentials (MEP; warning criteria: 75% loss in amplitude without return to acceptable limits after stimulation up 100 V above baseline level).

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Purpose: To identify the clinical phenotypes associated with the rate of progression while waiting for surgery and propose a classification scheme for identifying subgroups of patients to prioritize for surgery when long surgical delays are expected.

Methods: We reviewed the clinical and radiographic data of a prospective cohort of patients scheduled for IS surgery from 2004 to 2020 with a minimum 1-year wait prior to surgery. Candidate predictors consisted of age, sex, Risser sign, menarchal status, angle of trunk rotation, scoliotic curve type, and main Cobb angle at baseline when scheduled for surgery.

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Background: Infants with complete heart block (CHB) require epicardial pacemaker (PM) insertion. Prior studies described epicardial pacing outcomes in infants and children, although they were limited by small or heterogeneous populations.

Objective: This study aimed to explore patient- and procedure-level associations with device complications in infants with CHB who received a permanent PM.

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Article Synopsis
  • This study aimed to evaluate if unsupervised machine learning can differentiate patients with Fontan circulation from healthy individuals based on heart function metrics derived from cardiovascular magnetic resonance (CMR) imaging.
  • By analyzing 503 CMR studies from Fontan patients and 42 from controls, researchers identified four distinct patient clusters with different risks for adverse outcomes like heart failure or transplantation.
  • The highest-risk group, characterized by specific heart shapes and poor functioning, showed significantly greater health risks compared to the lowest-risk group, suggesting that machine learning can help target distinct patient subgroups for better clinical management.
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Objective: The corticospinal tract (CST) reveals progressive microstructural alterations in ALS measurable by DTI. The aim of this study was to evaluate fractional anisotropy (FA) along the CST as a longitudinal marker of disease progression in ALS.

Methods: The study cohort consisted of 114 patients with ALS and 110 healthy controls from the second prospective, longitudinal, multicentre study of the Canadian ALS Neuroimaging Consortium (CALSNIC-2).

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  • The study assessed how consenting to the Rick Hansen Spinal Cord Injury Registry (RHSCIR) affected patients' outcomes after spinal cord injuries, including hospital stay length, mortality, complications, and discharge location.
  • A retrospective analysis was done using data from 2014-2019, comparing three groups: those who provided full consent, those who declined follow-up interviews but accepted some data collection, and those who didn't consent at all.
  • Results showed that participants who declined full consent experienced longer hospital stays, more complications like pneumonia and pressure injuries, and were less likely to be discharged home compared to those who consented fully.
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Purpose: Postoperative physical therapy (PT) is a cornerstone of orthopedic and musculoskeletal rehabilitation, proven to provide various positive clinical benefits. However, there is a paucity of literature evaluating the utility of preoperative rehabilitation specific to spine surgery. Thus, this review article aims to provide an overview of previously published studies discussing the efficacy of preoperative rehabilitation programs and its role in spinal surgery.

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