Language used to describe medication review activities: does it require standardisation? A narrative synthesis

Introduction

Medication review (MR) is a health care professional’s systematic assessment of a patient’s medications with recommendations for improvement (1). To enable comparison between different evaluations of medication review-based interventions to determine whether the nature of activity differs, it is important that standardised language is used. Currently, there is no accepted international taxonomy for describing medication review activities. Therefore, we undertook a systematic review of literature with narrative synthesis to determine whether standardisation may be appropriate.

Aim

To determine the range of terms used to describe medication review activities.

Method

A PROSPERO registered systematic review (CRD 42020215992) was performed using search terms according to the Population, Intervention, Comparison and Outcome (PICO) framework. ‘Population’ & ‘Comparison’ were not used. Synonyms for medication review activities were used for both ‘Intervention’ and ‘Outcomes’, e.g., stop, start, change, alter. We included all papers reporting medication review activities in English with empirical data. Papers not using language to describe medication review activities were excluded. Two researchers reviewed all titles, abstracts, and full-text papers independently; discussion resolved any disagreement. Data extraction was carried out independently as per Cochrane Effective Practice and Organisation of Care (EPOC) as follows:

The papers were assessed using the Mixed Method Appraisal Tool (MMAT). The research team themed the extracted terms.

Results

After deleting duplicates, 9746 titles were screened. Twenty-one studies were included: eight quantitative non-randomised trials, eight randomised controlled trials, and five quantitative descriptive studies. The studies covered the UK, Netherlands, Australia, Sweden, Norway, Belgium, Canada, and Jordan. The table summarises the medication review activities reported in these papers.

Conclusion

Various authors reported medication review activities. ‘Alter’ and ‘adaptation’ are examples of ambiguous terms. Determining whether actions are related with activities to reduce or increase doses is difficult due to such terminology. As a result, comparing medication review approaches may be difficult. Limiting the search strategy to English-language only may have missed some studies. A taxonomy to describe and define medication review activities, thereby standardising MR reporting, should improve the presentation of data from process evaluations and the ability to compare activity between studies.

Reference

(1) Christensen M, Lundh A. Medication review in hospitalised patients to reduce morbidity and mortality. Cochrane Database Syst Rev [Internet]. 2016 Feb 20; Available from: https://doi.wiley.com/10.1002/14651858.CD008986.pub3

Nephroprotective Role of Selenium Nanoparticles Against Glycerol-Induced Acute Kidney Injury in Rats

Acute kidney injury (AKI) is a clinical syndrome associated with the incidence of rhabdomyolysis (RM). The current study was carried out to evaluate whether selenium nanoparticles (SeNPs) can protect against the glycerol-induced AKI model. Rats were distributed into four equal groups (n = 7): the control group (G1), SeNPs group (G2), AKI group (G3), and SeNPs+AKI group (G4). Rats in G1 were intramuscularly injected with physiological saline (0.9% NaCl). Rats in G2 were gavaged with SeNPs (0.1 mg/kg) for 14 days. Rats in G3 were intramuscularly injected with 50% glycerol (10 ml/kg). Rats in G4 were administered with SeNPs for 14 days and then injected with glycerol, as in G3. Glycerol-injected rats showed a significant increase in the kidney relative weight, as well as in the serum urea, creatinine, Kim-1, and renal malondialdehyde, nitric oxide, TNF-α, IL-1β, cytochrome c, Bax, and caspase-3 levels. In addition, a significant decrease in glutathione, glutathione peroxidase, glutathione reductase, superoxide dismutase, and catalase was recorded in the renal tissue. Selenium nanoparticles reduced the biochemical, molecular, and histological changes produced by glycerol. Overall, our results suggest that selenium nanoparticles could be used to protect against AKI development via antioxidant, anti-inflammatory, and anti-apoptotic activities.

P250 Evaluation of coronary endothelial dysfunction by positron emission tomography: does gender make a difference

Funding Acknowledgements

None

Introduction

Endothelial dysfunction (ED) manifested as abnormality of coronary microvasculature is associated with poor prognosis in patients presenting with chest pain. ED can be noninvasively evaluated by assessment of coronary flow reserve with positron emission tomography (PET). Studies directly comparing ED in men and women are limited. The aim of this study is to compare gender differences in ED as measured by CFR on PET myocardial perfusion imaging.

Methods

All the consecutive patients referred to PET-MPI between May 2011 and June 2018 were reviewed. Patient without known CAD who had normal perfusion were included in the analysis. Patient with abnormal electrocardiogram, significant transient ischemic dilatation, low left ventricular ejection fraction and high calcium score (>1000 AU) and renal failure were excluded. CFR is calculated as the ratio of stress/rest myocardial blood flow. CFR < 2 was considered as abnormal indicating the presence of ED.

Results

1711 patients were included in the analysis (mean age 60.2 ± 10 year, 68% females). Females were older and had higher BMI and diabetes (DM). Both resting and peak myocardial blood flow (MBF) was higher in females (1.16 vs 1.02 (p < 0.0001)) and 3.26 vs 2.9 (p < 0.001)0 respectively.  Around 68% of males had abnormal CFR (<2) compared to 63% of females (p = 0.05). After adjusting for the confounders, female gender was associated with higher peak MBF (Hazard ratio 0.29, 95% CI 0.19 –0.40, p < 0.001) and lower chance of having ED (Hazard ratio -0.15, 95% CI -0.29 - -0.005, p = 0.049)

Conclusions

Endothelial dysfunction as measured noninvasively by CFR on PET is prevalent among both sexes. Higher level of peak MBF in females may call for a different cut-off for abnormal CFR in women. Outcome studies are required to evaluate the clinical utility and prognostic value of such a cut-off.

P6158Prognostic value of non-obstructive coronary artery disease detected on coronary computed tomography angiography among subjects with suspected coronary artery disease

Introduction

Coronary Computed Tomography Angiography (CTA) is an established technique for the detection of coronary artery disease (CAD). However, the prognostic value of non-obstructive CAD is not well defined. Thus, the aim of this analysis is to determine the prognostic value of non-obstructive CAD detected on CTA.

Methods

In the Multi-Center Multi-Ethnic Coronary Computed Tomography Angiography (MECCA) Study, 3209 subjects without known CAD underwent CTA. Patients with obstructive CAD were excluded from this analysis. Patients with ≤70% luminal coronary artery stenosis in vessels other than the left main were classified to have non-obstructive CAD while patients without any plaque were considered to have normal CTA. Patients were followed up for a median duration of 3.4 years for all-cause mortality (ACM). Multivariable Cox models were used to determine the independent predictors of event-free survival.

Results

A total of 1455 subjects had non-obstructive CAD and 1382 subjects had normal coronary arteries. Subjects with non-obstructive CAD were older (55.9±11 vs 46.2±11 years, p<0.001) and more likely to be males (56.8% vs 50.5%, p=0.001) and had more prevalent traditional risk factors. A total of 83 ACM were observed (4.4% in the non-obstructive group and 1.3% in the normal group, p<0.001). Patients with clinical events were older (61.8±14 vs 50.9±12 years, p<0.001) and have more prevalence of DM (42.2% vs 31.4%, p=0.031) and HTN (72.3% vs 54.3%, p=0.001). In Multivariable Cox models, non-obstructive CAD was associated with increased event rate (Hazard ratio 1.75, 95% CI 1.01–3.01, p=0.45).

Kaplan-Meier Survival Curves

Conclusions

Patients with non-obstructive CAD on CTA have a higher rate of all-cause mortality. Non-obstructive CAD on CTA enhances risk stratification among subjects suspected with CAD and should call for more aggressive guidelines directed medical therapy.

Acknowledgement/Funding

None

Hemodialysis Patients' Willingness to Undergo Kidney Transplantation: An Observational Study

BACKGROUND

The number of dialysis patients is increasing, with only 20% undergoing kidney transplantation. In Saudi Arabia, no studies had examined transplantation barriers from the patients' perspectives. We aimed in this study to estimate hemodialysis (HD) patients' willingness to undergo kidney transplantation and to explore its underlying determinants.

METHODS

In an observational cross-sectional study involving adult HD patients from King Abdulaziz Medical City and King Abdullah Dialysis Center-Jeddah, patients were interviewed through a pre-tested questionnaire. Calculated sample size was 243.

RESULTS

Among the 252 HD patients (mean age, 55 years [standard deviation = 15.21]; 59% men; median duration on HD, 24 months [interquartile range, 11.1, 60]), 61% described their knowledge about kidney transplantation as "poor" or "very poor." Only 69% chose "willingness to undergo kidney transplantation" (proportion, 0.69; 95% confidence interval [CI], 0.64-0.75). The main reported reasons against willingness were being too old for transplantation (61%) and fear of surgical complications (26%). Less willingness was shown with age ≥60 years (adjusted odds ratio [AOR], 0.2; 95% CI, 0.11-0.36; P < .001), duration on HD ≥5 years (AOR, 0.47; 95% CI, 0.25-0.89; P = .021), and being non-married (AOR, 0.47; 95% CI, 0.24-0.93; P = .03).

CONCLUSIONS

Approximately one third of the respondents did not choose "willingness to undergo kidney transplantation." Willingness was negatively associated with older age, lack of spouse, and longer duration on HD. The majority of HD patients reported poor knowledge about kidney transplantation. Therefore, structured education may optimize the knowledge, perceptions, and attitudes of HD patients toward kidney transplantation and hence improve their transplantation willingness.