Browsing by Author "Viljoen, Estelle"

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    Efficacy and safety of saccharomyces boulardii in the treatment of acute gastroenteritis in the paediatric population : a systematic review
    (MedPharm Publications, 2018-04-12) Padayachee, Morgambal; Visser, Janicke; Viljoen, Estelle; Musekiwa, Alfred; Blaauw, Renee
    Context: Gastroenteritis (GE) remains the second major cause of death in the most vulnerable of the world’s populations. Potential treatments include the use of probiotics, with the yeast Saccharomyces boulardii being one such option. Objectives: The primary objective was to assess the efficacy and safety of Saccharomyces boulardii in the treatment of acute GE in the paediatric population. Method: Major electronic databases were searched from April 2014 to January 2015. Additional literature was obtained through hand-searching and reviewing of reference lists of articles and other systematic reviews. Randomised controlled trials (RCTs) in a hospital setting, involving participants < 16 years were used as the data source. Two reviewers independently screened studies for eligibility, assessed study quality and performed data extraction. Review Manager 5 was used to analyse data and a random-effects model of meta-analysis was applied owing to heterogeneity. Results: Ten of 190 articles were selected for final inclusion. A meta-analysis of five of the included studies showed that Saccharomyces boulardii compared with the control significantly shortened the duration of diarrhoea (in days) (MD –0.57, 95% CI –0.83 to –0.30, p < 0.0001), but there was no difference between groups regarding time to achieving formed stools. No adverse effects were reported. The GRADE tool assessed overall methodological quality as moderate. Conclusion: Saccharomyces boulardii showed a potential benefit in treating acute GE in the paediatric patient. A dose of 250 mg 1–2 times per day for up to 5 days showed some benefit and appears safe. Larger, rigorous RCTs are needed to investigate the efficacy and safety of Saccharomyces boulardii in order to offer specific treatment guidelines.
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    A systematic review and meta-analysis of the effect and safety of ginger in the treatment of pregnancy-associated nausea and vomiting
    (BioMed Central, 2014-03) Viljoen, Estelle; Visser, Janicke; Koen, Nelene; Musekiwa, Alfred
    Background and objectives: Nausea and vomiting during pregnancy (NVP) occur commonly. Possible harmful side-effects of conventional medicine to the fetus create the need for alternative options to relieve NVP. This systematic review (SR) investigated current evidence regarding orally administered ginger for the treatment of NVP. The primary objective was to assess the effectiveness of ginger in treating NVP. The secondary objective was to assess the safety of ginger during pregnancy. Methods: A comprehensive electronic bibliographic database search was carried out. Randomized controlled trials (RCTs) of the efficacy of orally administered ginger, as treatment for NVP in pregnant women at any stage of pregnancy, published in English, were included. Two researchers independently extracted data and assessed trial quality. RevMan5 software (Cochrane Collaboration) was used for data analysis. p < 0.05 was considered statistically significant. Results: Twelve RCTs involving 1278 pregnant women were included. Ginger significantly improved the symptoms of nausea when compared to placebo (MD 1.20, 95% CI 0.56-1.84, p = 0.0002, I² = 0%). Ginger did not significantly reduce the number of vomiting episodes during NVP, when compared to placebo, although there was a trend towards improvement (MD 0.72, 95% CI −0.03-1.46, p = 0.06, I² = 71%). Subgroup analyses seemed to favor the lower daily dosage of <1500 mg ginger for nausea relief. Ginger did not pose a significant risk for spontaneous abortion compared to placebo (RR 3.14, 95% CI 0.65-15.11, p = 0.15; I² = 0%), or to vitamin B₆ (RR 0.49, 95% CI 0.17-1.42, p = 0.19, I² = 40%). Similarly, ginger did not pose a significant risk for the side-effects of heartburn or drowsiness. Conclusions: This review suggests potential benefits of ginger in reducing nausea symptoms in pregnancy (bearing in mind the limited number of studies, variable outcome reporting and low quality of evidence). Ginger did not significantly affect vomiting episodes, nor pose a risk for side-effects or adverse events during pregnancy. Based on evidence from this SR, ginger could be considered a harmless and possibly effective alternative option for women suffering from NVP. International Prospective Register of Systematic Reviews (PROSPERO) registration number: CRD42011001237.
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    A systematic review of the effect and safety of ginger in the treatment of pregnancy-associated nausea and vomiting
    (Stellenbosch : Stellenbosch University, 2012-03) Viljoen, Estelle; Visser, Janicke; Koen, Nelene; Musekiwa, Alfred; Stellenbosch University. Faculty of Health Sciences. Dept. of Interdisciplinary Health Sciences. Human nutrition.
    ENGLISH ABSTRACT: Background: Nausea and vomiting during pregnancy (NVP) is a common medical condition. Due to possible harmful side-effects that conventional medicine may pose to the fetus, many mothers choose not to use it, and are left helpless against NVP. There is a need for alternative treatment to relieve NVP symptoms. Objectives: This systematic review (SR) investigated current evidence regarding ginger for the treatment of NVP. The primary objective was to assess the effectiveness of ginger in treating NVP. The secondary objective was to assess the safety of ginger during pregnancy, by identifying adverse events or side-effects. Search strategy: Electronic search of bibliographic databases (1966-February 2011). Selection criteria: Randomized controlled trials (RCTs) of the efficacy of ginger by any route, as treatment for NVP in pregnant women regardless of their age or stage of pregnancy. Data collection and analysis: The principal investigator and independent reviewer individually identified relevant studies, extracted data and assessed trial quality. Data analysis was performed using the RevMan5 software. Differences at the level of p<0.05 were considered to be statistically significant. Results: Eleven RCTs involving 1176 pregnant women were included. The quality of evidence was low, hence the high risk of bias and imprecision of results. Ginger significantly improved the symptoms of nausea when compared to placebo, when comparing the results of this SR to past SRs, and taking into account a meta-analysis performed on two relatively large included studies (mean difference (MD) 1.20, 95% confidence interval (CI) 0.56-1.84, p=0.0002, I2=0%). However, another meta-analysis on two smaller studies indicated no significant improvement in nausea. Ginger did not significantly improve nausea when compared to vitamin B6 (MD 0.34, 95% CI -1.52-2.20, p=0.7, I2=91%). Similarly, ginger did not significantly reduce the number of vomiting episodes during NVP, when compared to placebo, although there was a trend towards improvement (MD 0.72, 95% CI -0.03-1.46, p=0.06, I2=71%). Subgroup analyses performed seemed to favor the lower daily dosage of <1500mg ginger to possibly be more effective for the relief of nausea. Ginger did not pose a significant risk for spontaneous abortion when compared to placebo (RR 3.14, 95% CI 0.65-15.11, p=0.15; I2=0%), or to vitamin B6 (RR 0.49, 95% CI 0.17-1.42, p=0.19, I2=40%). Similarly, ginger did not pose a significant risk for the side effects of heartburn or drowsiness when compared to placebo or vitamin B6. When compared to dimenhydrinate, ginger posed a smaller risk for drowsiness (RR 0.08, 95% CI 0.03-0.18) and no increased risk for heartburn. Conclusions: This review suggests potential benefits of ginger in reducing nausea symptoms in pregnancy (bearing in mind the limited number of studies, variable outcome reporting and quality of evidence). Ginger did not have a significant impact on vomiting episodes, nor pose a risk for side effects or adverse events during pregnancy. Based on evidence from this SR, ginger could be considered a harmless and possibly effective alternative option for women suffering from the symptoms of NVP. Large RCTs are necessary to confirm the possible benefit of ginger as treatment for NVP.