Browsing by Author "Fenton, Tanis R."

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    Adequate Vitamin D Intake but Low Serum Levels in Pediatric Asthma Patients: A Pilot Study, Alberta Children’s Hospital
    (2016-10-27) Howe McKenna, Sarah; Fenton, Tanis R.; Noseworthy, Mary; Anselmo, Mark
    Background. We assessed vitamin D intakes and serum 25(OH) vitamin D levels in pediatric asthma patients on moderate-to-high dose inhaled steroids and compared them to published findings of healthy children in our city. Methods. Parents and/or patients were interviewed to estimate the children’s vitamin D intakes from foods and supplements (using an adapted validated food frequency questionnaire) and asthma duration and management. Vitamin D status: serum 25-hyroxy vitamin D (25(OH)D) was obtained from the medical records. Results. Vitamin D intakes from food and supplements of the asthma patients (, 742 ± 185 IU/day) were significantly higher compared to healthy Canadian children (, 229 ± 121 IU/day). Despite higher vitamin D intakes, the children had nonsignificantly lower serum 25(OH) vitamin D levels compared to the comparison group. Serum 25(OH)D levels increased by 3.6 nmol/L with each 100 IU of vitamin D intake (95% Confidence interval = 2.0–4.0, = 0.931, and ). Conclusion. Since adequate vitamin D status in asthma patients is necessary to support bone mineral accretion, it is important to achieve adequate vitamin D status by checking serum 25(OH)D status and supplement accordingly.
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    Association between Breastfeeding Self-Efficacy and Human Milk Feeding in Mothers of Moderate and Late Preterm Infants in a Level II NICU
    (2019-05-14) Delhenty, Samantha Elizabeth; Benzies, Karen Marie; Duffett-Leger, Linda A.; Fenton, Tanis R.
    Introduction: There is a positive association between breastfeeding self-efficacy (BSE) and breastmilk feeding duration in mothers of healthy, full-term infants. BSE refers to a mother’s perceived ability to successfully breastfeed her infant and is associated with four main factors: (a) performance accomplishments, (b) vicarious experience, (c) verbal persuasion, and (d) physiological and affective states. Limited research explores the relationship between BSE and breastmilk feeding duration for mothers of pre-term infants. Aim: The aim of this research was to explore the association between BSE and human milk feeding at discharge in mothers of moderate and late pre-term infants in a level II NICU. Methods: This study was part of a larger study known as the Family Integrated Care (FICare) study, a cluster randomized controlled trial conducted in 10 level II neonatal intensive care units (NICUs) in Alberta. BSE and breastmilk feeding rates were secondary outcomes. I conducted an observational study that involved secondary data analysis. Participants in this study included 221 maternal-infant dyads from the five control sites. BSE was collected using the modified breastfeeding self-efficacy scale – short form and human milk feeding outcomes were collected using categories recommended by Labbok and Krasovec. I aimed to look at predictors of human milk feeding at discharge and how previous breastfeeding experience may affect feeding outcomes. Results: The primary hypothesis for this study was supported and with all models (multivariable, crude, and stratified by parity analyses), BSE at admission was significantly associated with human milk feeding at discharge (p < 0.05). The secondary hypothesis was not supported since there was no important difference in the association between higher modified BSES-SF scores at admission and providing human milk at discharge when stratified by parity (p > 0.05). Conclusion: using the modified BSES-SF at admission in level II NICUs has potential as a clinical tool to support healthcare providers in identifying mothers of moderate and late pre-term infants at risk of early discontinuation of human milk feeding at discharge. Further research is needed to support the association between higher modified BSES-SF scores at admission and type of feeding at discharge with this maternal-infant dyad.
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    Causal assessment of dietary acid load and bone disease: a systematic review & meta-analysis applying Hill’s epidemiologic criteria for causality
    (BioMed Central, 2011-04-30) Fenton, Tanis R.; Tough, Suzanne C.; Lyon, Andrew W.; Eliasziw, Misha; Hanley, David A.
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    Cord blood calcium, phosphate, magnesium, and alkaline phosphatase gestational age-specific reference intervals for preterm infants
    (BioMed Central, 2011-08-31) Fenton, Tanis R.; Lyon, Andrew W.; Rose, M. Sarah
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    Low urine pH and acid excretion do not predict bone fractures or the loss of bone mineral density: a prospective cohort study
    (BioMed Central, 2010-05-10) Fenton, Tanis R.; Eliasziw, Misha; Tough, Suzanne C.; Lyon, Andrew W.; Brown, Jacques P.; Hanley, David A.
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    Phosphate decreases urine calcium and increases calcium balance: A meta-analysis of the osteoporosis acid-ash diet hypothesis
    (BioMed Central, 2009-09-15) Fenton, Tanis R.; Lyon, Andrew W; Eliasziw, Michael; Tough, Suzanne C; Hanley, David A
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    Prehabilitation for Enhanced Recovery After Colorectal Surgery
    (2020-06-08) Gillis, Chelsia; Fenton, Tanis R.; Gramlich, Leah M.; Culos-Reed, Susan Nicole; Sajobi, Tolulope T.
    Background: Postoperative morbidity is largely the product of the preoperative condition of the patient, the quality of surgical care provided, and the degree of surgical stress elicited. Enhanced Recovery After Surgery (ERAS) minimizes surgical stress with standardized evidence-based perioperative care; yet the ERAS care elements focus mainly on the intra- and postoperative periods, which may not sufficiently enhance recovery if preoperative patient-related factors have not been modified before surgery. Prehabilitation programs aim to enhance recovery by targeting the preoperative condition of the patient.Methods: This dissertation includes four manuscripts that broadly contribute to the evidence that supports the hypothesis that the patient’s preoperative status modifies outcomes in colorectal surgery. Results: First, intermediately frail and frail patients with poor functional walking capacity before surgery suffer more postoperative complications than patients with better functional walking capacity. Second, nutrition prehabilitation, with and without exercise, reduces mean length of hospital stay by two days. Third, patient interviews suggest that patients support the idea of using prehabilitation to enhance their preoperative condition. Finally, the last manuscript offers methodological suggestions to measure and analyze external variables as a means of advancing the prehabilitation literature and further enhancing patient outcomes. Conclusion: The findings of this doctoral dissertation add to the growing body of evidence that the process of surgical recovery begins before surgery. Prehabilitation interventions can be applied to support better postoperative recoveries.
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    A systematic review and meta-analysis to revise the Fenton growth chart for preterm infants
    (BioMed Central, 2013-04-20) Fenton, Tanis R.; Kim, Jae H