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Liu X, Chen P, Liu Y, Jia X, Xu D. Medication burden in patients with dialysis-dependent CKD: a systematic review. Ren Fail 2024; 46:2353341. [PMID: 38832502 DOI: 10.1080/0886022x.2024.2353341] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2023] [Accepted: 05/06/2024] [Indexed: 06/05/2024] Open
Abstract
This systematic review aimed to statistically profile the medication burden and associated influencing factors, and outcomes in patients with dialysis-dependent chronic kidney disease (DD-CKD). Studies of medication burden in patients with DD-CKD in the last 10 years from 1 January 2013 to 31 March 2024 were searched from PubMed, Embase, and Cochrane databases. Newcastle-Ottawa Scale (NOS) or Agency for Healthcare Research and Quality (AHRQ) methodology checklist was used to evaluate quality and bias. Data extraction and combining from multiple groups of number (n), mean, and standard deviation (SD) were performed using R programming language (version4.3.1; R Core Team, Vienna, Austria). A total of 10 studies were included, and the results showed a higher drug burden in patients with DD-CKD. The combined pill burden was 14.57 ± 7.56 per day in hemodialysis (HD) patients and 14.63 ± 6.32 in peritoneal dialysis (PD) patients. The combined number of medications was 9.74 ± 3.37 in HD and 8 ± 3 in PD. Four studies described the various drug classes and their proportions, in general, antihypertensives and phosphate binders were the most commonly used drugs. Five studies mentioned factors associated with medication burden. A total of five studies mentioned medication burden-related outcomes, with one study finding that medication-related burden was associated with increased treatment burden, three studies finding that poor medication adherence was associated with medication burden, and another study finding that medication complexity was not associated with self-reported medication adherence. Limitations: meta-analysis was not possible due to the heterogeneity of studies.
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Affiliation(s)
- Xuemei Liu
- Department of Nephrology, The First Affiliated Hospital of Shandong First Medical University & Shandong Provincial Qianfoshan Hospital, Jinan, China
- Shandong First Medical University, Jinan, China
- Shandong Institute of Nephrology, Jinan, China
| | - Ping Chen
- Department of Nephrology, The First Affiliated Hospital of Shandong First Medical University & Shandong Provincial Qianfoshan Hospital, Jinan, China
- Shandong Institute of Nephrology, Jinan, China
| | - Yun Liu
- Key Laboratory of Emergency and Critical Care Medicine of Shandong Province, Key Laboratory of Cardiopulmonary-Cerebral Resuscitation Research of Shandong Province, Shandong Provincial Engineering Laboratory for Emergency and Critical Care Medicine, Qilu Hospital of Shandong University, Jinan, China
| | - Xiaoyan Jia
- Department of Nephrology, The First Affiliated Hospital of Shandong First Medical University & Shandong Provincial Qianfoshan Hospital, Jinan, China
- Shandong Institute of Nephrology, Jinan, China
| | - Dongmei Xu
- Department of Nephrology, The First Affiliated Hospital of Shandong First Medical University & Shandong Provincial Qianfoshan Hospital, Jinan, China
- Shandong Institute of Nephrology, Jinan, China
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Albadrani MS, Aljeelani YO, Farsi SH, Aljohani MA, Qarh AA, Aljohani AS, Alharbi AA, A Tobaiqi MA, Aljohani AM, Alzaman NS, Fadlalmola HA. Effect of medication adherence on quality of life, activation measures, and health imagine in the elderly people: a cross-sectional study. BMC Geriatr 2024; 24:631. [PMID: 39048952 PMCID: PMC11271039 DOI: 10.1186/s12877-024-05227-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Accepted: 07/17/2024] [Indexed: 07/27/2024] Open
Abstract
BACKGROUND Usually, old age brings a poor quality of life due to illness and frailty. To prolong their lives and ensure their survival, all elderly patients with chronic diseases must adhere to their medications. In our study, we investigate medication adherence for elderly patients and its impact on the general health of the patient. METHODS We implemented a cross-sectional survey-based study with four sections in April 2022 in Saudi Arabia. Data about the participants' demographic characteristics, the Morisky Medication Adherence Scale, Patient Activation Measure (PAM) 13, and EQ-5D-5 L. RESULTS A total of 421 patients participated in this study, their mean age was 60.4 years, and most of them were males. Most of our population is living independently 87.9%. The vast majority of people have a low adherence record in the Morisky Medication Adherence Scale (8-MMAS) classes (score = < 6). Moreover, the average PAM13 score is 51.93 (Level2) indicating a low level of confidence and sufficient knowledge to take action. Our analysis showed a significant correlation between socioeconomic status and medication adherence. Also, there was an association between housing status and medication adherence. On the other hand, we found no correlation between medication adherence and quality of life (QOL) by EQ-5D-5 L. CONCLUSION Medication adherence is directly affected by living arrangements, as patients who live with a caretaker who can remind them to take their medications at the appropriate times have better medication adherence than those who live alone. Medication adherence was also significantly influenced by socioeconomic status, perhaps as a result of psychological effects and the belief of the lower-salaried population that they would be unable to afford the additional money required to cure any comorbidities that arose as a result of the disease. On the other hand, we did not find any correlation between medication adherence and quality of life. Finally, awareness of the necessity of adherence to medication for the elderly is essential.
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Affiliation(s)
- Muayad Saud Albadrani
- Department of Family and Community Medicine and Medical Education College of Medicine, Taibah University, Madinah, Saudi Arabia.
- Preventive Medicine Clinics Complex Madinah Health Cluster, Madinah, Saudi Arabia.
| | | | | | | | | | | | | | - Muhammad Abubaker A Tobaiqi
- Department of Family and Community Medicine and Medical Education College of Medicine, Taibah University, Madinah, Saudi Arabia
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Al Haqimy Mohammad Yunus MA, Akkawi ME, Fata Nahas AR. Investigating the association between medication regimen complexity, medication adherence and treatment satisfaction among Malaysian older adult patients: a cross-sectional study. BMC Geriatr 2024; 24:447. [PMID: 38778251 PMCID: PMC11110348 DOI: 10.1186/s12877-024-05016-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2023] [Accepted: 04/26/2024] [Indexed: 05/25/2024] Open
Abstract
BACKGROUND The prevalence of medication nonadherence among Malaysian older adults is approximately 60%. However, there is a lack of studies assessing the factors associated with medication nonadherence among this population. This research aims to explore the association between medication regimen complexity (MRC), treatment satisfaction and medication adherence among Malaysian older adults. METHOD A cross-sectional study was conducted in outpatient clinics of a teaching hospital in Pahang, Malaysia, between April 2023 and September 2023. MRC Index (MRCI), Treatment Satisfaction for Medication version II (TSQM v.II), and the Malaysian Medication Adherence Assessment Tool (MyMAAT) were used. Multivariate linear and logistic regression models were performed to test the factors affecting treatment satisfaction and medication adherence. Mediator analysis was implemented to assess the mediating role of treatment satisfaction. RESULT The study involved 429 Malaysian older adult patients, with a prevalence of nonadherence of 51.0% (n = 219) and an MRCI mean score of 17.37 (SD = 7.07). The mean overall treatment satisfaction score was 73.91 (SD = 15.23). Multivariate logistic regression analysis expressed four significant predictors associated with nonadherence: MRC (AOR = 1.179, p = 0.002), overall treatment satisfaction (AOR = 0.847, p < 0.001), partially self-managed medication (AOR = 2.675, p = 0.011) and fully managed medication by family members/caregivers (AOR = 8.436, p = 0.004). Multivariate linear regression shows three predictors of treatment satisfaction: MRC (β = -1.395, p < 0.001), Charlson Comorbidity Index (CCI) (β = -0.746, p = 0.009) and self-managed medication (β = 5.554, p = 0.006). Mediator analysis indicated that treatment satisfaction partially mediated the association between MRC and nonadherence. CONCLUSION Nonadherence was quite prevalent among Malaysian older outpatients and was associated with regimen complexity, treatment satisfaction and patient dependence on others to manage their medications. Future studies should focus on interventions to control the factors that negatively affect patients' medication adherence.
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Affiliation(s)
| | - Muhammad Eid Akkawi
- Department of Pharmacy Practice, Faculty of Pharmacy, International Islamic University Malaysia, Kuantan, Malaysia.
- Quality Use of Medicines Research Group, Faculty of Pharmacy, International Islamic University Malaysia, Kuantan, Malaysia.
| | - Abdul Rahman Fata Nahas
- Department of Pharmacy Practice, Faculty of Pharmacy, International Islamic University Malaysia, Kuantan, Malaysia
- Quality Use of Medicines Research Group, Faculty of Pharmacy, International Islamic University Malaysia, Kuantan, Malaysia
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Aby ES, Shen TH, Murugappan MN, Stenehjem DD, Leventhal TM. High rifaximin out-of-pocket costs are associated with decreased treatment retention among patients with hepatic encephalopathy. Hepatol Commun 2023; 7:e0215. [PMID: 37534941 PMCID: PMC10553020 DOI: 10.1097/hc9.0000000000000215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/04/2023] [Accepted: 06/07/2023] [Indexed: 08/04/2023] Open
Abstract
BACKGROUND AND AIMS Hepatic encephalopathy (HE) is associated with significant morbidity and mortality for those with cirrhosis. Despite the known benefits of rifaximin use for HE, treatment retention remains low. This study aimed to evaluate the impact of out-of-pocket (OOP) rifaximin cost on treatment retention among commercially insured patients in the United States. METHODS Adult patients with cirrhosis and HE were identified from the IBM MarketScan claims database. Those who began rifaximin treatment between January 1, 2011, and December 1, 2021 were included. Regression models were used to analyze the relationship between patients' 30-day OOP rifaximin cost and rifaximin retention (≥80% eligible days with rifaximin supply) at 180, 360, and 540 days. Models were controlled for patient demographic and clinical characteristics including age, sex, comorbid conditions, Charlson comorbidity index (CCI), and lactulose use. RESULTS A total of 6839 adult patients were included. Most patients were between 55 and 64 years (57.1%), male (60.4%), and living in urban settings (84.6%). Treatment retention was low for all time periods; retention rates for rifaximin were 42%, 25%, and 16% at 180, 360, and 540 days, respectively. In multivariable analysis, 30-day OOP costs of ≥ $150 were associated with a decreased likelihood of rifaximin retention at 180, 360, and 540 days [relative risk (RR) = 0.67, RR = 0.62, and R = 0.60, respectively]. Younger age was associated with reduced treatment retention for all time periods. Metastatic cancer and depression were associated with reduced treatment retention at 180 days (RR = 0.70 and RR = 0.87, respectively). CONCLUSIONS Rates of rifaximin treatment retention are low despite the known benefits of rifaximin use for breakthrough HE. High 30-day OOP cost is associated with reduced rifaximin treatment retention.
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Affiliation(s)
- Elizabeth S. Aby
- Department of Medicine, Division of Gastroenterology, Hepatology and Nutrition, University of Minnesota, Minneapolis, Minnesota, USA
| | - Tsung-Hua Shen
- Department of Pharmacy Practice and Pharmaceutical Sciences, University of Minnesota, College of Pharmacy, Minneapolis, Minnesota, USA
| | - Meena N. Murugappan
- Department of Pharmacy Practice and Pharmaceutical Sciences, University of Minnesota, College of Pharmacy, Minneapolis, Minnesota, USA
| | - David D. Stenehjem
- Department of Pharmacy Practice and Pharmaceutical Sciences, University of Minnesota, College of Pharmacy, Minneapolis, Minnesota, USA
| | - Thomas M. Leventhal
- Department of Medicine, Division of Gastroenterology, Hepatology and Nutrition, University of Minnesota, Minneapolis, Minnesota, USA
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Wu X, Tang F, Li H, Chen C, Zhang H, Liu X, Lai H, Li Q, Deng L, Ye Z. Development and validation of a nomogram model for medication non-adherence in patients with chronic kidney disease. J Psychosom Res 2023; 171:111385. [PMID: 37301180 DOI: 10.1016/j.jpsychores.2023.111385] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/07/2023] [Revised: 05/17/2023] [Accepted: 05/19/2023] [Indexed: 06/12/2023]
Abstract
OBJECTIVE The high prevalence of medication non-adherence in patients with chronic kidney disease places a tremendous burden on healthcare resources. The study was designed to develop and validate a nomogram model of medication non-adherence in patients with chronic kidney disease in China. METHODS A multicenter cross-sectional study was conducted. 1206 chronic kidney disease patients were consecutively enrolled from Be Resilient to Chronic Kidney Disease (registration number: ChiCTR2200062288) between September 2021 and October 2022 in four tertiary hospitals in China. The Chinese version of four-item Morisky Medication Adherence Scale was used to assess the medication adherence of the patients and associated factors consisted of socio-demographic information, self-designed medication knowledge questionnaire, the 10-item Connor-Davidson Resilience Scale, the Beliefs about Medicine questionnaire, the Acceptance Illness Scale, and the Family Adaptation Partnership Growth and Resolve Index. Least Absolute Shrinkage and Selection Operator regression was performed to select significant factors. Concordance index, Hosmer-Lemeshow test and decision curve analysis were estimated. RESULTS The prevalence of medication non-adherence was 63.8%. Area under the curves ranged from 0.72 to 0.96 in internal and external validation sets. The predicted probabilities of the model were consistent with those of the actual observations by Hosmer-Lemeshow test (all P > .05). The final model included educational level, occupational status, duration of chronic kidney disease, medication beliefs (perceptions of the need to take medications and concerns about adverse effects), and illness acceptance (adaptation and acceptance of the disease). CONCLUSIONS There is a high prevalence of medication non-adherence among Chinese patients with chronic kidney disease. A nomogram model based on five factors has been successfully developed and validated and could be incorporated into long-term medication management.
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Affiliation(s)
- Xiaona Wu
- School of Nursing, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Fang Tang
- Chronic Disease Management Center, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou, China
| | - Huanhuan Li
- Department of Nephrology, The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Cuiqing Chen
- Department of Nephrology, Foshan Hospital of Traditional Chinese Medicine, Foshan, China
| | - Haiyan Zhang
- Department of Rheumatology and Immunology, The Second Affiliated Hospital of Shaoyang University, Shanoyang, China
| | - Xiuzhu Liu
- Department of Gastroenterology, Puning People's Hospital, Puning, China
| | - Huijing Lai
- Department of Pulmonology, Foshan Hospital of Traditional Chinese Medicine, Foshan, China
| | - Qiang Li
- Department of Nephrology, The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Lili Deng
- Nursing Department, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou, China.
| | - Zengjie Ye
- School of Nursing, Guangzhou University of Chinese Medicine, Guangzhou, China.
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Russell AM, Opsasnick L, Yoon E, Bailey SC, O'Brien M, Wolf MS. Association between medication regimen complexity and glycemic control among patients with type 2 diabetes. J Am Pharm Assoc (2003) 2022; 63:769-777. [PMID: 36682933 DOI: 10.1016/j.japh.2022.12.028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Revised: 12/02/2022] [Accepted: 12/28/2022] [Indexed: 01/02/2023]
Abstract
INTRODUCTION Type 2 diabetes mellitus (T2DM) and comorbid conditions require patients to take complex medication regimens. Greater regimen complexity has been associated with poorer T2DM management; however, the relationship between overall regimen complexity and glycemic control is unclear. OBJECTIVES Our objectives were: (1) to examine associations between regimen complexity (with the Medication Regimen Complexity Index [MRCI]) and glycemic control (A1C), and (2) to compare overall MRCI with other measures of regimen complexity (overall and diabetes-specific medication count) and diabetes-specific MRCI. METHODS This was a secondary data analysis of cross-sectional data from a parent trial. Participants were patients with T2DM taking at least 3 chronic medications followed in safety net clinics in the Chicago area. The MRCI measures complexity based on dosing frequency, route of administration, and special instructions for prescribed medications. MRCI scores were created for overall regimens and diabetes-specific medications. Sociodemographics and outpatient visit utilization were included in models as covariates. Linear regression was used to examine the associations between variables of interest and hemoglobin A1C. RESULTS Participants (N = 432) had a mean age of 56.9 years, most were female (66.0%), and Hispanic or Latino (73.3%). Regimen complexity was high based on overall medications (mean = 6.6 medications, SD: 3.09) and MRCI (mean = 21.4, SD: 11.3). Higher diabetes-specific MRCI was associated with higher A1C in bivariate and multivariable models. In multivariable models, overall MRCI greater than 14, fewer outpatient health care visits, male gender, and absence of health insurance were independently associated with higher A1C. The variance in A1C explained by MRCI was higher compared to medication count for overall and diabetes-specific regimen complexity. CONCLUSIONS More complex regimens are associated with worse A1C and measuring complexity with MRCI may have advantages. Deprescribing, increasing insurance coverage, and promoting engagement in health care may improve A1C among underserved populations with complex regimens.
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Belachew EA, Netere AK, Sendekie AK. Medication regimen complexity and its impact on medication adherence and asthma control among patients with asthma in Ethiopian referral hospitals. Asthma Res Pract 2022; 8:7. [PMID: 36529750 PMCID: PMC9761953 DOI: 10.1186/s40733-022-00089-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Accepted: 12/13/2022] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND Various studies have found that medication adherence is generally low among patients with asthma, and that the complexity of the regimen may be a potential factor. However, there is no information on the complexity of the regimen and its relationship to adherence and asthma outcomes in Ethiopian asthma patients. Therefore, this study assessed how complex medication regimens affected medication adherence and asthma control in patients with asthma. METHOD From February 1 to May 30, 2022, a multicenter cross-sectional study was conducted in three public referral hospitals in northwestern Ethiopia. The Medication Complexity Index (MRCI), a 65-item validated instrument, was used to represent the complexity of medication regimens The Medication Adherence Rating Scale for Asthma (MARS-A) was used to assess medication adherence, and the ACT was used to measure the level of asthma control. The association between predictor and outcome variables was determined using multivariable logistic regression analysis. P-values of < 0.05 were declared as a significant association. RESULT Patients with asthma (n = 396) who met the inclusion criteria were included in the final analysis. About 21.2% and 24.5% of the participants had high asthma-specific MRCI and patient-level MRCI, respectively. The majority (84.4%) of the participants did not adhere to their medication, and 71% of the participants were classified as having uncontrolled asthma. According to the result of the multivariable analysis, moving from a high asthma-specific MRCI to a moderate asthma MRCI enhances the likelihood of medication adherence by 2.51 times (AOR = 2.51, 95%CI: (1.27, 7.71). Likewise, patients who have low asthma MRCI were four times more likely to adhere to the medication compared with high asthma MRCI (AOR = 3.80, 95%CI: (2.0, 11.1). Similarly, patients having low patient-level MRCI were eight times more likely their asthma level had been controlled (AOR = 7.84, 95%CI: 1.46 to 21.3) and patients who had moderate patient-level MRCI were three times (AOR = 2.83, 95%CI: 1.05 to 8.25) more controlled asthma compared with patients who had high patient level MRCI. CONCLUSION The majority of asthma patients had low and moderate complexity of MRCI. Patients with low and moderate regimen complexity demonstrated high adherence and had well-controlled asthma. Therefore, future researchers should consider MRCI as one factor for adherence and asthma control levels.
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Affiliation(s)
- Eyayaw Ashete Belachew
- grid.59547.3a0000 0000 8539 4635Department of Clinical Pharmacy, School of Pharmacy,College of Medicine and Health Sciences, University of Gondar, 196 Gondar, Ethiopia
| | - Adeladlew Kassie Netere
- grid.59547.3a0000 0000 8539 4635Department of Clinical Pharmacy, School of Pharmacy,College of Medicine and Health Sciences, University of Gondar, 196 Gondar, Ethiopia
| | - Ashenafi Kibret Sendekie
- grid.59547.3a0000 0000 8539 4635Department of Clinical Pharmacy, School of Pharmacy,College of Medicine and Health Sciences, University of Gondar, 196 Gondar, Ethiopia
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Colombijn JMT, Vonk S, Cornelis T, Boorsma S, Krekels MME, Abrahams AC, van Jaarsveld BC. Impact of phosphate binders on quality of life in dialysis patients: Results from the prospective Dutch nOcturnal and hoME dialysis Study To Improve Clinical Outcomes study. Nephrology (Carlton) 2022; 27:834-844. [PMID: 36122909 PMCID: PMC9826474 DOI: 10.1111/nep.14088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Revised: 06/29/2022] [Accepted: 07/14/2022] [Indexed: 01/11/2023]
Abstract
BACKGROUND Phosphate binders cause high pill burden for dialysis patients, complicate medication regimens, and have unpleasant taste and large size which may affect patients' quality of life. This study explores the association between phosphate binder pill burden and health-related quality of life (HRQoL) in dialysis patients. METHODS We conducted a cross-sectional multi-centre cohort study in 21 Dutch dialysis centres. Phosphate binder pill burden was extracted from electronic patient records. Primary outcome was HRQoL measured with the Short Form 12 physical and mental component summary scores (PCS and MCS). Secondary endpoints were severity of gastro-intestinal symptoms, itching, dry mouth, and mental health symptoms, measured with the Dialysis Symptom Index. RESULTS Of 388 included patients, aged 62 ± 16 years, 77% underwent haemodialysis. PCS scores were comparable for patients with and without phosphate binders. Patients using 1-3 pills reported lower scores for decreased appetite (β -0.5; 95%CI -0.9 to -0.2), implying better appetite, than patients without phosphate binders. Patients using 4-6 pills also reported lower scores for decreased appetite (β -0.5; 95%CI -0.8 to -0.1) and for itching (β -0.5; 95%CI -0.9 to -0.1). Patients using >6 pills reported lower MCS (β -2.9; 95%CI -6.2-0.4) and higher scores for feeling nervous (β 0.6; 95%CI 0.1-1.1) and feeling sad (β 0.4; 95%CI 0.0-0.9). CONCLUSION Phosphate binder pill burden is not associated with physical quality of life. A higher pill burden is associated with better appetite and less itching. Patients using >6 pills per day report lower mental quality of life and felt nervous and sad more often.
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Affiliation(s)
- Julia M. T. Colombijn
- Department of Nephrology, Amsterdam Cardiovascular SciencesAmsterdam UMC, Vrije Universiteit AmsterdamAmsterdamThe Netherlands,Department Nephrology and HypertensionUniversity Medical Centre UtrechtUtrechtThe Netherlands,Julius Centre for Health Sciences and Primary Care, University Medical Centre UtrechtUtrecht UniversityUtrechtThe Netherlands
| | - Sanne Vonk
- Department Nephrology and HypertensionUniversity Medical Centre UtrechtUtrechtThe Netherlands
| | - Tom Cornelis
- Department of NephrologyJessa HospitalHasseltBelgium
| | - Siska Boorsma
- Department of NephrologyLaurentius HospitalRoermondThe Netherlands
| | | | - Alferso C. Abrahams
- Department Nephrology and HypertensionUniversity Medical Centre UtrechtUtrechtThe Netherlands
| | - Brigit C. van Jaarsveld
- Department of Nephrology, Amsterdam Cardiovascular SciencesAmsterdam UMC, Vrije Universiteit AmsterdamAmsterdamThe Netherlands,Diapriva Dialysis CentreAmsterdamThe Netherlands
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Alshogran OY, Shatnawi EA, Altawalbeh SM, Jarab AS, Farah RI. Medication non-adherence and the achievement of therapeutic goals of anemia therapy among hemodialysis patients in Jordan. Hosp Pract (1995) 2022; 50:82-88. [PMID: 35061551 DOI: 10.1080/21548331.2022.2032073] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Accepted: 01/19/2022] [Indexed: 06/14/2023]
Abstract
OBJECTIVES Anemia is prevalent in hemodialysis (HD) patients. Data about factors associated with medication non-adherence in anemic HD patients is limited. This study examined determinants of medication non-adherence and its association with achievement of therapeutic goals of anemia measures among HD patients. METHODS A cross-sectional study was conducted among a representative group of HD patients in Jordan. Medication adherence was assessed using Morisky Green Levine Medication Adherence Scale (MGL). Other utilized instruments were modified Charlson Comorbidity Index (mCCI), general Health-Related Quality of Life (HRQoL) EQ-5D-5 L, and Hospital Anxiety and Depression Scale (HADS). Pharmacy claim data during the years of (2016-2017) were also retrieved from patients' medical records. Logistic regression was conducted to identify factors associated with medication non-adherence and achieving therapeutic goals of anemia therapy. RESULTS More than two-thirds of the participants (69.1%) were found non-adherent and the mean score of MGL scale was 2.4 ± 1.4. The non-adherence rate measured using refill data (69.6%) was comparable to that observed using self-reported MGL instrument. Education level of college or over was significantly associated with lower odds of non-adherence (OR = 0.365, p = 0.036), while complaining of a headache was associated with 2.5-fold risk of medication non-adherence (OR = 2.5, p = 0.017). A trend toward better achievement of iron indices therapeutic goals was observed with improved adherence measured using refill data. Multiple factors such as improved knowledge about prescribed medications was significantly associated with achieving anemia therapeutic goals (p < 0.05). CONCLUSION The findings suggest poor medication adherence among HD patients with anemia. Future interventions by health-care providers should target modifiable factors to improve medication adherence and, hence, health outcomes among HD patients with anemia.
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Affiliation(s)
- Osama Y Alshogran
- Department of Clinical Pharmacy, Faculty of Pharmacy, Jordan University of Science and Technology, Irbid, Jordan
| | - Esraa A Shatnawi
- Department of Clinical Pharmacy, Faculty of Pharmacy, Jordan University of Science and Technology, Irbid, Jordan
| | - Shoroq M Altawalbeh
- Department of Clinical Pharmacy, Faculty of Pharmacy, Jordan University of Science and Technology, Irbid, Jordan
| | - Anan S Jarab
- Department of Clinical Pharmacy, Faculty of Pharmacy, Jordan University of Science and Technology, Irbid, Jordan
| | - Randa I Farah
- Department of Internal Medicine, School of Medicine, The University of Jordan, Amman, Jordan
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Fotaraki ZM, Gerogianni G, Vasilopoulos G, Polikandrioti M, Giannakopoulou N, Alikari V. Depression, Adherence, and Functionality in Patients Undergoing Hemodialysis. Cureus 2022; 14:e21872. [PMID: 35273844 PMCID: PMC8901145 DOI: 10.7759/cureus.21872] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/02/2022] [Indexed: 12/21/2022] Open
Abstract
Background Patients undergoing hemodialysis face multiple problems such as difficulties in performing daily activities, low functional capacity, non-adherence to the hemodialysis regimen, and depressive symptoms that lead to poor health outcomes. The present study aimed to assess the levels of depression, adherence, and functionality in patients undergoing hemodialysis, as well as the association between the above variables. Materials and methods In this cross-sectional study, 100 patients undergoing hemodialysis from a private hospital in Athens participated. Data were collected via the Zung Self-Rating Depression Scale, the Barthel Scale/Index, and the Greek Simplified Medication Adherence Questionnaire-Hemodialysis for the evaluation of patients’ depression, functionality, and adherence to hemodialysis regimen, respectively. In addition, sociodemographic and clinical characteristics were recorded. The study was conducted during the period of December 2020 to February 2021. IBM SPSS Statistics for Windows, Version 25.0 (Released 2017. IBM Corp., Armonk, New York) was used for the statistical analysis of the data. The statistical significance level was set up at 0.05. Results Of the patients, 50% scored < 38 (possible range 20-80) in the scale pof depression, and 25% of patients scored < 34. Regarding adherence, the median value was 7 (IQR: 7-7) while 77% scored 7 (possible range of 0-8). Regarding functionality, mild dependence (score 91-99) was referred by 77% of the participants, moderate dependence (score 61-90) by 17%, and severe dependence (score 21-60) was referred by 6% of the patients. A statistically significant negative association emerged between depression and functionality (r= -0.342, p=0.001) while no significant association arised between depression and adherence (r= 0.021,p=0.836) as well as between adherence and functionality (r = 0.078, p = 0.439). Statistical significantly higher scores of depression were seen in women (β = 3.65, p = 0.001) and elderly >70 years old (β = 3.51, CI=0.09-6.93, p = 0.044). Statistically significantly lower functionality were referred by patients >70 years old (β = -13.58, CI: -21.68-5.49, p = 0.001) and by patients with high depression score (β= -0.62, 95% CI: -1.06-0.20, p = 0.005). Conclusion Patients experienced moderate to low levels of depression and high levels of adherence and functionality. The higher the functionality scores, the lower the depression scores. Demographic characteristics, such as age and gender, seem to be significant predictors of depression and functionality.
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Affiliation(s)
- Zoi-Maria Fotaraki
- Department of Nursing, Postgraduate Program "Applied Clinical Nursing", University of West Attica, Athens, GRC
| | - Georgia Gerogianni
- Department of Nursing, Postgraduate Program "Applied Clinical Nursing", University of West Attica, Athens, GRC
| | - Georgios Vasilopoulos
- Department of Nursing, Postgraduate Program "Applied Clinical Nursing", University of West Attica, Athens, GRC
| | - Maria Polikandrioti
- Department of Nursing, Postgraduate Program "Applied Clinical Nursing", University of West Attica, Athens, GRC
| | | | - Victoria Alikari
- Department of Nursing, Postgraduate Program "Applied Clinical Nursing", University of West Attica, Athens, GRC
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Bai HH, Nie XJ, Chen XL, Liang NJ, Peng LR, Yao YQ. Beliefs about medication and their association with adherence in Chinese patients with non-dialysis chronic kidney disease stages 3-5. Medicine (Baltimore) 2022; 101:e28491. [PMID: 35029199 PMCID: PMC8757969 DOI: 10.1097/md.0000000000028491] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Accepted: 12/16/2021] [Indexed: 01/05/2023] Open
Abstract
There is a scarcity of research into the impact of medication beliefs on adherence in patients with non-dialysis chronic kidney disease (CKD). This study is to determine the psychometric properties of the Chinese version of the Beliefs about Medicines Questionnaire (BMQ)-Specific among patients with non-dialysis CKD stages 3-5, and to assess the beliefs of CKD patients and their association with medication adherence.A cross-sectional study was conducted in CKD patients who recruited at the nephrology clinics of Xi'an Central Hospital, Xi'an, Shaanxi, China. The original BMQ-Specific was translated into Chinese. The internal consistency and test-retest reliability of the Chinese version of the BMQ-Specific scale were assessed, while exploratory and confirmatory factor analyses were also applied to determine its reliability and validity. The Kruskal-Wallis test and multiple ordered logistic regression were performed to identify the relationship between beliefs about and adherence to medication among CKD patients.This study recruited 248 patients. Cronbach's α values of the BMQ-Specific necessity and concern subscales were 0.826 and 0.820, respectively, with intraclass correlation coefficients of 0.784 and 0.732. Factor analysis showed that BMQ-Specific provided a good fit to the two-factor model. The adherence of patients was positively correlated with perceived necessity (r = 0.264, P < .001) and negatively correlated with concern (r = -0.294, P < .001). Medication adherence was significantly higher for the accepting group (high necessity and low concern scores) than for the ambivalent group (high necessity and concern scores; β = -0.880, 95% confidence interval [CI] = -1.475 to -0.285), skeptical group (low necessity and high concern scores; β = -2.620, 95% CI = -4.209 to -1.031) and indifferent group (low necessity and concern scores; β = -0.918, 95% CI = -1.724 to -0.112).The Chinese version of BMQ-Specific exhibited satisfactory reliability and validity for use in patients with non-dialysis CKD stages 3-5 and has been demonstrated to be a reliable screening tool for clinicians to use to predict and identify the non-adherence behaviors of patients.
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Affiliation(s)
- He-He Bai
- Department of Pharmacy, Xi’ an Central Hospital, Xi’an, Shaanxi, China
| | - Xiao-Jing Nie
- Department of Pharmacy, Xi’ an Central Hospital, Xi’an, Shaanxi, China
| | - Xiao-Lin Chen
- Department of Nephrology, Xi’ an Central Hospital, Xi’an, Shaanxi, China
| | - Ning-Jing Liang
- Department of Nephrology, Xi’ an Central Hospital, Xi’an, Shaanxi, China
| | - Li-Rong Peng
- Department of Pharmacy, Xi’ an Central Hospital, Xi’an, Shaanxi, China
| | - Yan-Qin Yao
- Department of Pharmacy, The Third Affiliated Hospital of Xi ’an Medical University, Xi’an, Shaanxi, China
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12
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Improve medication adherence in older adults with chronic kidney disease by identifying and addressing underlying factors. DRUGS & THERAPY PERSPECTIVES 2021. [DOI: 10.1007/s40267-021-00865-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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13
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Federman AD, O’Conor R, Wolf MS, Wisnivesky JP. Associations of Medication Regimen Complexity with COPD Medication Adherence and Control. Int J Chron Obstruct Pulmon Dis 2021; 16:2385-2392. [PMID: 34434045 PMCID: PMC8382307 DOI: 10.2147/copd.s310630] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Accepted: 05/04/2021] [Indexed: 12/30/2022] Open
Abstract
Introduction Medication adherence is often low among people with chronic obstructive pulmonary disease (COPD) and medication regimen complexity may be a contributing factor. In this study, we sought to examine the role of medication regimen complexity in COPD medication adherence among patients with multimorbidity. Methods We performed cross-sectional analysis of data on COPD patients in primary care and pulmonary practices in New York City and Chicago (n=400). Regimen complexity was represented by the medication regimen complexity index (MRCI) and simple medication count. Adherence was measured by self-report and inhaler dose counts. Disease control measures included the COPD severity score (COPDSS) and the Medical Research Council (MRC) severity index. Results Mean age of study participants was 69 years, 66% had MRC grades 4 or 5, and 45% had low medication adherence. MRCI scores did not differ significantly between those with and without adequate medication adherence. Patients with higher MRCI scores were more likely to have severe COPD (OR 5.00, 95% CI 1.46-17.1, p=0.01) and dyspnea grades 3 or 4 (OR 2.27, 95% CI 1.03-5.03, p=0.04). Significant associations of medication count with COPD severity were also observed. Discussion These findings demonstrate that among patients with COPD and comorbid hypertension and diabetes, higher medication regimen complexity is associated with worse COPD control but not with COPD medication adherence.
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Affiliation(s)
- Alex D Federman
- Division of General Internal Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Rachel O’Conor
- Division of General Internal Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Michael S Wolf
- Division of General Internal Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Juan P Wisnivesky
- Division of General Internal Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, USA
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Effect of number of medications and complexity of regimens on medication adherence and blood pressure management in hospitalized patients with hypertension. PLoS One 2021; 16:e0252944. [PMID: 34111189 PMCID: PMC8191947 DOI: 10.1371/journal.pone.0252944] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Accepted: 05/25/2021] [Indexed: 11/19/2022] Open
Abstract
INTRODUCTION Good adherence of antihypertensives is recommended for the accomplishment of hypertension therapy. The number of medications and characteristics contributing to medication regimen complexity, such as dosage forms and dosing frequency, are known to influence medication adherence. However, the effect of medication regimen complexity on the therapeutic efficacy of medicines remains to be clarified. In the present study, we retrospectively investigated the effect of number of medications and medication regimen complexity on medication adherence and therapeutic efficacy in patients with hypertension. METHODS According to the inclusion and exclusion criteria, 1,057 patients, who were on medications including antihypertensives on admission at the Mie University Hospital between July 2018 and December 2018, were enrolled in this study. Poor blood pressure management was defined if the systolic or diastolic blood pressure were ≥140 mmHg or ≥ 90 mmHg. Medication regimen complexity was quantified using the medication regimen complexity index (MRCI) score. RESULTS Among 1,057 patients, 164 and 893 patients were categorized into poor and good adherence groups, respectively. The multivariate analyses revealed that age ≥ 71 years and oral MRCI score ≥ 19.5 but not number of oral medications were extracted as risk factors for poor medication adherence. Medication adherence and blood pressure management were poor in the group with oral MRCI score ≥ 19.5, regardless of the age. The rate of readmission was similar. CONCLUSION Our study is the first to demonstrate that medication regimen complexity rather than number of medications is closely related to medication adherence and blood pressure management. Hence, physicians and/or pharmacists should consider the complexity of medication regimens while modifying them.
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Fotokian Z, Pourhabib A, Navabi N, Ghaffari F. Designing a structural equation model of marital satisfaction based on aging perception and demographic and clinical variables in Iranian elderly patients with coronary artery disease. ARYA ATHEROSCLEROSIS 2021; 16:161-169. [PMID: 33598036 PMCID: PMC7867309 DOI: 10.22122/arya.v16i4.2087] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
BACKGROUND Marital satisfaction is an important variable in maintaining or promoting elderly health. Therefore, identifying the effective factors can increase life expectancy and quality of life. This study aimed to determine the relationship between aging perception and demographic and clinical characteristics with marital satisfaction in the elderly patients with coronary artery disease (CAD). METHODS This was a descriptive-correlational study. The sample size was 480 elderly patients with CAD who were referred to the heart clinics of hospitals in the west of Mazandaran Province, Iran, who were recruited by convenience sampling. Data were collected by a demographic checklist, ENRICH Marital Satisfaction Inventory, and Aging Perceptions Questionnaire (APQ). The data were analyzed by structural equation model (SEM) using Goodness of Fit Index (GFI and chi-square test. P-value less than 0.050 was considered as significant level. RESULTS The mean and standard deviation (SD) of marital satisfaction was 145.16 ± 12.12, and the mean and SD of aging perception was 113.39 ± 12.74. The results of the Pearson's correlation coefficient indicated that the highest correlation was between aging perception and marital satisfaction (r = 0.68, P < 0.001). The model fit indices of the hypothesized model met the criteria, with the GFI = 0.91, Comparative Fit Index (CFI) = 0.93, Normed Fit Index (NFI) = 0.94, and non-Normed Fit Index (NNFI) = 0.91. CONCLUSION Considering the psychological risk factors affecting marital satisfaction such as aging perception and suitable measurement can lead to marital health and improve treatment outcomes by increasing elderly motivation in self-care. Therefore, the elderly patients with CAD need more serious and long-term educational, counseling, and supportive interventions.
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Affiliation(s)
- Zahra Fotokian
- Assistant Professor, Nursing Care Research Center, Health Research Institute, Babol University of Medical Sciences, Babol, Iran
| | - Ali Pourhabib
- PhD Candidate, School of Nursing and Midwifery, Golestan University of Medical Sciences, Gorgan, Iran
| | - Nasrin Navabi
- Lecturer, Nursing Care Research Center, Health Research Institute, Babol University of Medical Sciences, Babol, Iran
| | - Fatemeh Ghaffari
- Associate Professor, Nursing Care Research Center, Health Research Institute, Babol University of Medical Sciences, Babol, Iran
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Marienne J, Laville SM, Caillard P, Batteux B, Gras-Champel V, Masmoudi K, Choukroun G, Liabeuf S. Evaluation of Changes Over Time in the Drug Burden and Medication Regimen Complexity in ESRD Patients Before and After Renal Transplantation. Kidney Int Rep 2021; 6:128-137. [PMID: 33426392 PMCID: PMC7785410 DOI: 10.1016/j.ekir.2020.10.011] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Revised: 10/07/2020] [Accepted: 10/13/2020] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND Medication regimen complexity (MRC) has not been characterized in detail in patients with end-stage renal disease (ESRD). The objective of the present study was to quantify changes over time in the prescription drug burden and MRC in patients with ESRD (before transplantation, on discharge after kidney transplantation [M0], and 4 months [M4] and 12 months [M12] afterward). METHODS We retrospectively studied adult patients having undergone kidney transplantation. The number and types of drug prescribed, the pill burden, and the MRC index (MRCI) at 4 different time points (before transplantation, M0, M4, and M12) were extracted from the patients' medical records. MRCI was calculated by adding each drug score (calculated according to its formulation, dosing frequency, and additional instructions concerning administration). Hence, the MRCI took account of all prescription drugs. A logistic regression model was used to identify factors associated with an elevated MRCI at M12. RESULTS The median (interquartile range) age of the 354 study participants was 52 years (42-62). Respectively 21%, 42%, 53%, and 38% of the patients were taking 10 or more drugs before transplantation and at M0, M4, and M12. At M12, the 3 most frequently prescribed drug classes were immunosuppressants, cardiovascular system drugs, and drugs acting on the alimentary tract and metabolism. The pill burden and MRCI before transplantation were significantly lower (P < 0.001) than at each time point after transplantation. Diabetes and dyslipidemia were independently associated with an elevated MRCI at M12. CONCLUSION In kidney transplant recipients, the drug burden and MRCI were greater at all time points after transplantation than before transplantation. The impact of the drug burden and MRC on medication adherence and clinical outcomes in these patients requires further evaluation.
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Affiliation(s)
- Justine Marienne
- Department of Clinical Pharmacology, Amiens University Hospital, Amiens, France
| | - Solène M. Laville
- Centre for Research in Epidemiology and Population Health (CESP), INSERM UMRS 1018, Villejuif, France
| | - Pauline Caillard
- MP3CV Laboratory, EA7517, University of Picardie Jules Verne, Amiens, Amiens, France
- Department of Nephrology, Amiens University Hospital, Amiens, France
| | - Benjamin Batteux
- Department of Clinical Pharmacology, Amiens University Hospital, Amiens, France
- MP3CV Laboratory, EA7517, University of Picardie Jules Verne, Amiens, Amiens, France
| | - Valérie Gras-Champel
- Department of Clinical Pharmacology, Amiens University Hospital, Amiens, France
- MP3CV Laboratory, EA7517, University of Picardie Jules Verne, Amiens, Amiens, France
| | - Kamel Masmoudi
- Department of Clinical Pharmacology, Amiens University Hospital, Amiens, France
| | - Gabriel Choukroun
- MP3CV Laboratory, EA7517, University of Picardie Jules Verne, Amiens, Amiens, France
- Department of Nephrology, Amiens University Hospital, Amiens, France
| | - Sophie Liabeuf
- Department of Clinical Pharmacology, Amiens University Hospital, Amiens, France
- MP3CV Laboratory, EA7517, University of Picardie Jules Verne, Amiens, Amiens, France
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ASSESSMENT OF ADHESION TO TREATMENT OF PATIENTS BEING ON KIDNEY REPLACEMENT THERAPY TAKING INTO ACCOUNT THE PRESENCE OF TYPE 2 DIABETES MELLITUS. WORLD OF MEDICINE AND BIOLOGY 2021. [DOI: 10.26724/2079-8334-2021-3-77-73-77] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Owsiany MT, Hawley CE, Paik JM. Differential Diagnoses and Clinical Implications of Medication Nonadherence in Older Patients with Chronic Kidney Disease: A Review. Drugs Aging 2020; 37:875-884. [PMID: 33030671 DOI: 10.1007/s40266-020-00804-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/22/2020] [Indexed: 12/16/2022]
Abstract
Older adults with chronic kidney disease (CKD) often have many comorbidities, which requires them to take multiple medications. As the number of daily medications prescribed increases, the risk for polypharmacy increases. Understanding and improving medication adherence in this patient population is vital to avoiding the drug-related adverse events of polypharmacy. The primary objective of this review is to summarize the existing literature and to understand the factors leading to medication nonadherence in older patients with CKD. In this review, we discuss the prevalence of polypharmacy, the current lack of consensus on the incidence of medication nonadherence, the heterogeneity of assessing medication adherence, and the most common differential diagnoses for medication nonadherence in this population. Specifically, the most common differential diagnoses for medication nonadherence in older adults with CKD are (1) medication complexity; (2) cognitive impairment; (3) low health literacy; and (4) systems-based barriers. We provide tailored strategies to address these differential diagnoses and subsequently improve medication adherence. The clinical implications include deprescribing to decrease medication complexity and polypharmacy, utilizing a team-based approach to identify and support patients with cognitive impairment, enriching communication between health providers and patients with low health literacy, and improving health care access to address systems-based barriers. Further research is needed to determine the effects of addressing these differential diagnoses and medication adherence in older adults with CKD.
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Affiliation(s)
- Montgomery T Owsiany
- New England Geriatric Research, Education and Clinical Center, VA Boston Healthcare System, 150 South Huntington Avenue, Boston, MA, 12D-94, USA
| | - Chelsea E Hawley
- New England Geriatric Research, Education and Clinical Center, VA Boston Healthcare System, 150 South Huntington Avenue, Boston, MA, 12D-94, USA
| | - Julie M Paik
- New England Geriatric Research, Education and Clinical Center, VA Boston Healthcare System, 150 South Huntington Avenue, Boston, MA, 12D-94, USA. .,Renal Section, VA Boston Healthcare System, Boston, MA, USA. .,Renal Division and Division of Pharmacoepidemiology and Pharmacoeconomics, Department of Medicine, Brigham and Women's Hospital, Boston, MA, USA. .,Harvard Medical School, Boston, MA, USA.
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