Publications by authors named "Barrett O"

Background: Relatively few studies have examined the association between the entire spectrum of adverse birth outcomes [stillbirth, preterm birth (PTB), term births that are low birth weight (LBW) or high birth weight (HBW)] and long-term risk of CVD in the mother. Our objective was to examine the association between birth outcomes and risk of premature CVD or death in a contemporary cohort of pregnant women.

Methods: We conducted a retrospective population-based cohort study of women in Alberta, Canada, between 01/01/2005 and 01/01/2023.

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  • The study examines the use of antiseizure medications (ASMs) among pregnant individuals in four Canadian provinces over 20 years, focusing on trends and patterns in ASM usage among those with and without epilepsy.
  • Results showed that only 0.7% of the pregnant population had epilepsy, with 1.7% exposed to ASMs; notable increases in ASM use were observed among those without epilepsy, especially in Manitoba, Saskatchewan, and Alberta.
  • The analysis also revealed shifts in ASM drug classes, with a decline in older medications like carbamazepine and a rise in newer options like lamotrigine, while usage patterns varied by province and trimester.
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Health Canada (HC) has, since 2013, issued safety alerts restricting the use of codeine-containing drugs among breastfeeding women and children/adolescents under 18 years of age. These products are linked to breathing problems among ultra-rapid CYP2D6 metabolizers and early use of opioid can lead to future opioid misuse. Using a multi-province population-based cohort study, we estimate the impact of federal safety alerts on annual rates of codeine use in the Canadian pediatric population.

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Objectives: This study used the behavior change wheel to identify the priority behavioral factors for a tailored intervention to support (re-)engagement in sexual activity following a spinal cord injury (SCI).

Research Method/design: Forty-eight semistructured interviews were conducted with participants from three outpatient/carer/clinician populations in the United Kingdom: people living with SCI, their partners/spouses, and healthcare professionals working in SCI rehabilitation. To identify potential strategies to facilitate (re-)engagement in sexual activity, the behavior change wheel (BCW) and behavior change technique taxonomy Version 1 were applied to code behavior change techniques (BCTs) present in interview transcripts.

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  • The Kaplan-Meier method can overestimate the risk of cancer coming back, especially when other events like death happen first, but the Aalen-Johansen method can give a more accurate picture by considering these events.
  • A study looked at research articles about meningiomas (a type of brain tumor) since 2020 and found that only a few used the better method.
  • It showed that not using the Aalen-Johansen method mostly led to overestimating the recurrence risk, especially in older patients with more serious tumors.
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Background: Cardiomyopathy (CM) is a rare childhood disease associated with morbidity and mortality. Limited data exist on paediatric CM in Canada. Given the rare nature, single-centre studies are not sufficiently powered to address important questions.

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Introduction: Preeclampsia and gestational diabetes mellitus share risk factors such as obesity and increased maternal age, which have become more prevalent in recent decades. We examined changes in the prevalence of preeclampsia and gestational diabetes between 2005 and 2018 in Denmark and Alberta, Canada, and investigated whether the observed trends can be explained by changes in maternal age, parity, multiple pregnancy, comorbidity, and body mass index (BMI) over time.

Material And Methods: This study was a register-based cohort study conducted using data from the Danish National Health Registers and the provincial health registers of Alberta, Canada.

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Background: Diabetes mellitus (DM) is associated with increased risk of embolic complications in non-valvular atrial fibrillation (NVAF). Impaired renal function (IRF) increases the risk of stroke as well, but this finding is not consistent among all studies. Our aim was to assess the incidence rates and risk of ischemic stroke and mortality by baseline Estimated Glomerular Filtration Rate (eGFR) levels Among individuals with AF and DM.

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Aims: To provide real-world evidence on the uptake of and outcomes associated with the modified gestational diabetes mellitus (GDM) screening approach offered during the COVID-19 pandemic compared with the standard screening approach.

Methods: All pregnancies between 01 January 2020 and 31 December 2021, in Alberta, Canada, were included in the study. We examined GDM screening and diagnosis rates, and large-for-gestational-age (LGA) outcomes.

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Objectives: To test the effects of actively implementing a clinical pathway for acute care of pediatric concussion on health care utilization and costs.

Methods: Stepped wedge, cluster randomized trial of a clinical pathway, conducted in 5 emergency departments (ED) in Alberta, Canada from February 1 to November 30, 2019. The clinical pathway emphasized standardized assessment of risk for persistent symptoms, provision of consistent information to patients and families, and referral for outpatient follow-up.

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Background: Identifying high-risk percutaneous coronary intervention (PCI) patients is challenging. We aimed to evaluate which high-risk patients are prone to adverse events.

Methods: We performed a retrospective study including consecutive high-risk PCIs from 2005 to 2018 in a large tertiary medical centre.

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Background: Existing cardiac disease contributes to poor outcome in patients with coronavirus disease 2019 (COVID-19). Little information exists regarding COVID-19 infection in patients with a cardiac implantable electronic device (CIED).

Objectives: To assess the association between CIEDs and severity of COVID-19 infection.

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  • Concussion is a prevalent injury among children and adolescents, and current guidelines recommend regular follow-up visits for recovery supervision.
  • This study analyzed health data from Alberta, Canada, to identify factors influencing follow-up care after pediatric concussions, focusing on predisposing, enabling, and need-based factors.
  • Key findings revealed that only 13% of concussion episodes led to follow-up care, with higher rates among males, adolescents, and patients from outpatient settings or with prior concussions, while lower socioeconomic status and rural living decreased likelihood of follow-up.
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Background And Aims: The prognostic impact of nonobstructive coronary artery disease (CAD), as opposed to normal coronary arteries, on long-term outcomes of patients with myocardial infarction with no obstructive coronary arteries (MINOCA) is unclear. We aimed to address the association between nonobstructive-CAD and major adverse events (MAE) following MINOCA.

Methods: We conducted a retrospective cohort study of consecutive MINOCA patients admitted to a large referral medical center between 2005 and 2018.

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Purpose: This study explored how partners/spouses of people with Spinal Cord Injury (SCI) experienced intimacy, sexual function, and sexual satisfaction post-SCI.

Materials And Methods: Qualitative, semi-structured interviews were conducted with the partners/spouses of people with SCI living in the community in the United Kingdom. Twelve participants (7 females; 5 males) were recruited using purposive sampling.

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Ambulatory blood pressure monitoring (ABPM) is considered the most reliable and accurate measurement of blood pressure (BP). However, the use of ABPM has some limitations, which make it difficult to complete for the entire 24 h. We aimed to establish in which part of the day BP measurements are in highest correlation with full ABPM (over 24 h) results.

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Background: Primary central nervous system lymphoma (PCNSL) is a rare aggressive non-Hodgkin's lymphoma. There are limited data on the management of PCNSL outside of clinical trials.

Objectives: To report experience with three main high-dose methotrexate (HDMTX)-based protocols for PCNSL treatment at one medical center.

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Study Design: A qualitative, semi-structured interview design.

Objectives: This study aimed to identify, from the perspective of people living with a Spinal Cord Injury (SCI), the primary psychosocial barriers and facilitators that impact on their sexual function and sexual satisfaction post-injury.

Setting: Community-dwelling sample of people with SCI in England, United Kingdom METHODS: Semi-structured interviews with twenty people with SCI (15 males; 5 females) were conducted using an 8-item interview schedule.

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In recent years, trans-catheter aortic valve implantation (TAVI) has emerged as an excellent alternative to surgical aortic valve replacement (SAVR). Currently, there are several approved devices on the market, yet comparisons among them are scarce. We aimed to compare the various devices via a network meta-analysis.

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Background: We described longitudinal trends in the incidence of episodes of care (EOC) and follow-up care for pediatric concussion in relation to age, sex, rurality of patient residence, point of care, and area-based socioeconomic status (SES) in Alberta, Canada.

Methods: A retrospective population-based cohort study was conducted using linked, province-wide administrative health data for all patients <18 years of age who received a diagnosis of concussion, other specified injuries of head, unspecified injury of head, or post-concussion syndrome between April 1, 2004 and March 31, 2018. Data were geospatially mapped.

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Introduction: Secondary prevention of cardiovascular events among patients with diagnosed cardiovascular disease and high ischemic risk poses a significant challenge in clinical practice. The combinations of aspirin with low-dose (LD) ticagrelor or LD rivaroxaban have shown superiority in preventing major adverse cardiovascular events (MACE) compared with aspirin treatment alone. The comparative value for money of these two regimens remains unexplored.

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Objective: To explore healthcare professionals' perspectives on the barriers and facilitators impacting provision of support for sexual functioning/satisfaction during spinal cord injury rehabilitation.

Design: Qualitative, semi-structured interview design.

Methods: Sixteen healthcare professionals working in spinal cord injury rehabilitation settings were recruited (14 females, 2 males).

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Objective: To understand use of family physician services and emergency department visits by adolescents and young adults with chronic health conditions.

Design: Longitudinal retrospective observational cohort study using administrative health data.

Setting: Chronic care clinics at a tertiary care pediatric hospital in Calgary, Alta.

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Aim: To evaluate insufficient rotational movement of the left ventricle (LV) as a potential novel mechanism for functional regurgitation of the mitral valve (FMR).

Methods And Results: We compared reference subjects and patients with LV dysfunction (LVD, ejection fraction EF < 50%) with and without FMR (regurgitant volume RVol>10 ml). Subjects without structural mitral valve pathology undergoing cardiac MRI were evaluated.

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