1
|
Farouk F, Wahba D, Mogawer S, Elkholy S, Elmeligui A, Abdelghani R, Ibahim S. Development and Validation of a New LC-MS/MS Analytical Method for Direct-Acting Antivirals and Its Application in End-Stage Renal Disease Patients. Eur J Drug Metab Pharmacokinet 2020; 45:89-99. [PMID: 31667795 DOI: 10.1007/s13318-019-00584-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
BACKGROUND AND OBJECTIVE The effectiveness of direct-acting antivirals (DAAs) is not well established in end-stage renal disease (ESRD) patients. Assessment of the plasma concentrations may support understanding of their therapeutic outcomes in this population. The aim of this study is to develop a direct, yet matrix-effect tolerant, analytical method for determining DAAs in the plasma of ESRD patients while maintaining a moderate cost per sample and with an improved analyte extraction recovery. METHODS In this study, a liquid chromatography-tandem mass spectrometric (LC-MS/MS) method was developed for the analysis of ombitasvir (OMB), paritaprevir (PRT) and ritonavir (RIT) in plasma. Sample preparation was performed using the liquid-liquid extraction (LLE) method. Isocratic separation was performed using a mixture of methanol and 10 mM ammonium acetate (79:21, v/v) followed by MS/MS detection. The method was validated and applied to determine DAAs in the plasma of ESRD patients (n = 7). RESULTS The developed method was linear (r2 > 0.995), accurate (89.4 ± 7.8 to 108.3 ± 3.0) and precise (% CV 0.9-15.0) and showed improved recovery (> 80) over previously published ones in the range 5-250, 30-1,500, 20-1,000 ng/mL for OMB, PRT and RIT, respectively. Relative matrix effect was absent, and the method accurately determined the three DAAs in real-life samples (n = 7). CONCLUSIONS An efficient analytical method for the determination of DAAs is presented. The method overcomes the potential analytical response fluctuation in ESRD. The developed method show improved extraction recoveries and is suitable for routine application in developing economies where hepatitis C virus is most prevalent.
Collapse
Affiliation(s)
- Faten Farouk
- Pharmaceutical Chemistry Department, Faculty of Pharmacy, Ahram Canadian University, 6th October City, Egypt.
| | - Dina Wahba
- National Organization of Drug Quality Control and Research, Giza, Egypt
| | - Sherif Mogawer
- Internal Medicine Department, Hepato-gastroenterology Unit, Faculty of Medicine, Cairo University, Giza, Egypt
| | - Shaimaa Elkholy
- Internal Medicine Department, Hepato-gastroenterology Unit, Faculty of Medicine, Cairo University, Giza, Egypt
| | - Ahmed Elmeligui
- Internal Medicine Department, Hepato-gastroenterology Unit, Faculty of Medicine, Cairo University, Giza, Egypt
| | - Reham Abdelghani
- Internal Medicine Department, Nephrology Unit, Faculty of Medicine, Cairo University, Giza, Egypt
| | - Salwa Ibahim
- Internal Medicine Department, Nephrology Unit, Faculty of Medicine, Cairo University, Giza, Egypt
| |
Collapse
|
2
|
Giacomelli A, Pezzati L, Rusconi S. The crosstalk between antiretrovirals pharmacology and HIV drug resistance. Expert Rev Clin Pharmacol 2020; 13:739-760. [PMID: 32538221 DOI: 10.1080/17512433.2020.1782737] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
INTRODUCTION The clinical development of antiretroviral drugs has been followed by a rapid and concomitant development of HIV drug resistance. The development and spread of HIV drug resistance is due on the one hand to the within-host intrinsic HIV evolutionary rate and on the other to the wide use of low genetic barrier antiretrovirals. AREAS COVERED We searched PubMed and Embase on 31 January 2020, for studies reporting antiretroviral resistance and pharmacology. In this review, we assessed the molecular target and mechanism of drug resistance development of the different antiretroviral classes focusing on the currently approved antiretroviral drugs. Then, we assessed the main pharmacokinetic/pharmacodynamic of the antiretrovirals. Finally, we retraced the history of antiretroviral treatment and its interconnection with antiretroviral worldwide resistance development both in , and middle-income countries in the perspective of 90-90-90 World Health Organization target. EXPERT OPINION Drug resistance development is an invariably evolutionary driven phenomenon, which challenge the 90-90-90 target. In high-income countries, the antiretroviral drug resistance seems to be stable since the last decade. On the contrary, multi-intervention strategies comprehensive of broad availability of high genetic barrier regimens should be implemented in resource-limited setting to curb the rise of drug resistance.
Collapse
Affiliation(s)
- Andrea Giacomelli
- III Infectious Disease Unit, ASST-FBF-Sacco , Milan, Italy.,Department of Biomedical and Clinical Sciences DIBIC L. Sacco, University of Milan , Milan, Italy
| | - Laura Pezzati
- III Infectious Disease Unit, ASST-FBF-Sacco , Milan, Italy.,Department of Biomedical and Clinical Sciences DIBIC L. Sacco, University of Milan , Milan, Italy
| | - Stefano Rusconi
- III Infectious Disease Unit, ASST-FBF-Sacco , Milan, Italy.,Department of Biomedical and Clinical Sciences DIBIC L. Sacco, University of Milan , Milan, Italy
| |
Collapse
|
3
|
Zhang Q, Li X, Qiao S, Shen Z, Zhou Y. Comparing self-reported medication adherence measures with hair antiretroviral concentration among people living with HIV in Guangxi, China. AIDS Res Ther 2020; 17:8. [PMID: 32122394 PMCID: PMC7053048 DOI: 10.1186/s12981-020-00265-4] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Accepted: 02/21/2020] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND Antiretroviral adherence is essential to HIV treatment efficacy. Various self-reported measures are commonly used for assessing antiretroviral adherence. Limited data are available regarding the validity of those self-reported measures in comparison with long-term objective biomarkers of adherence measures such as hair measures. METHODS Self-reported adherence (frequency, percentage, and visual analog scale [VAS]) and hair tenofovir concentration were evaluated at a single time point from 268 people living with HIV in China. The responses to each of three self-reported measures were converted into percentage and then dichotomized as "optimal" (100%) vs. "suboptimal" (less than 100%) adherence. Two composite adherence scores (CAS) were created from the three self-reported measures: (1) an overall adherence was the average percentage of the three self-reported measures; (2) responses were termed optimal adherence if participants reporting optimal adherence in all three self-reported measures, while were termed suboptimal adherence. Hair tenofovir concentration was also dichotomized as "optimal" (above the limit of quantitation, 36 pg/mg) vs. "suboptimal" adherence (blow 36 pg/mg). Spearman correlation, kappa statistics, and logistic regression analysis were used to calculate the correlations, agreements, and predictions of self-reported measures with hair measure, respectively. RESULTS Overall adherence, but any of the three self-reported adherence, was correlated with hair tenofovir concentration (r = 0.13, p < 0.05). Self-reported optimal adherence in VAS and CAS measures were agreed with and predicted optimal adherence assessed by hair measure (Kappa = 0.107, adjusted OR = 1.88, 95% CI 1.03-3.45; Kappa = 0.109, adjusted OR = 1.80, 95% CI 1.02-3.18; all p < 0.05, respectively). CONCLUSION VAS may be a good individual self-reported measure for antiretroviral adherence, and CAS may be a good composite self-reported measure for antiretroviral adherence.
Collapse
Affiliation(s)
- Quan Zhang
- South Carolina SmartState Center for Healthcare Quality (CHQ), Arnold School of Public Health, University of South Carolina, Discovery I, 915 Greene Street, Columbia, SC, 29028, USA.
- Institute of Pedagogy and Applied Psychology, School of Public Administration, Hohai University, Nanjing, Jiangsu, China.
| | - Xiaoming Li
- South Carolina SmartState Center for Healthcare Quality (CHQ), Arnold School of Public Health, University of South Carolina, Discovery I, 915 Greene Street, Columbia, SC, 29028, USA
| | - Shan Qiao
- South Carolina SmartState Center for Healthcare Quality (CHQ), Arnold School of Public Health, University of South Carolina, Discovery I, 915 Greene Street, Columbia, SC, 29028, USA
| | - Zhiyong Shen
- Guangxi Zhuang Autonomous Region Center for Disease Control and Prevention, Nanning, Guangxi, China
| | - Yuejiao Zhou
- Guangxi Zhuang Autonomous Region Center for Disease Control and Prevention, Nanning, Guangxi, China
| |
Collapse
|
4
|
Saberi P, Chakravarty D, Ming K, Legnitto D, Gandhi M, Johnson MO, Neilands TB. Moving Antiretroviral Adherence Assessments to the Modern Era: Correlations Among Three Novel Measures of Adherence. AIDS Behav 2020; 24:284-290. [PMID: 31758349 PMCID: PMC6996539 DOI: 10.1007/s10461-019-02744-w] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
There is no gold standard for estimating antiretroviral therapy (ART) adherence. Feasible, acceptable, and objective measures that are cost- and time-effective are needed. US adults (N = 93) on ART for ≥ 3 months, having access to a mobile phone and internet, and willing to mail in self-collected hair samples, were recruited into a pilot study of remote adherence data collection methods. We examined the correlation of self-reported adherence and three objective remotely collected adherence measures: text-messaged photographs of pharmacy refill dates for pharmacy-refill-based adherence, text-messaged photographs of pills for pill-count-based adherence, and assays of home-collected hair samples for pharmacologic-based adherence. All measures were positively correlated. The strongest correlation was between pill-count- and pharmacy-refill-based adherence (r = 0.68; p < 0.001), and the weakest correlation was between self-reported adherence and hair drug concentrations (r = 0.14, p = 0.34). The three measures provide objective adherence data, are easy to collect, and are viable candidates for future HIV treatment and prevention research.
Collapse
|
5
|
van Elsland SL, Peters RPH, Grobbelaar N, Ketelo P, Kok MO, Cotton MF, van Furth AM. Paediatric ART Adherence in South Africa: A Comprehensive Analysis. AIDS Behav 2019; 23:475-488. [PMID: 30054766 DOI: 10.1007/s10461-018-2235-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Adherence to antiretroviral therapy (ART) remains a challenge for HIV-infected children. In this cross-sectional study, we used structured interview-administered questionnaires and medical records to measure adherence levels and factors associated with adherence and viral suppression. We included 195 South African children aged 2.1-12.9 on ART. Adherence levels ranged between 20.5% (pill count) and 89.1% (self-report). Boys were less adherent according to self-report, girls were less adherent according to pill count. Caregivers ensured medication was taken when the condition directly affected daily life. Well-functioning families and families with high SES provide a context supportive of adherence. Non-disclosure and difficulties administering medication negatively affected adherence and viral suppression. This study shows challenging levels of adherence impacting directly on viral suppression in a South African paediatric HIV program. Gender roles, non-disclosure and difficulty administering medication may undermine adherence and should be taken into account for clinical guidelines, policy design and inform strategies.
Collapse
Affiliation(s)
- Sabine L van Elsland
- Department of Paediatric Infectious Diseases and Immunology, VU University Medical Centre, Amsterdam, The Netherlands.
- Department of Paediatrics and Child Health, Tygerberg Children's Hospital and Stellenbosch University, Francie van Zijl Avenue, Clinical Building, 2nd Floor, Tygerberg, Cape Town, South Africa.
| | | | | | | | - Maarten O Kok
- Department of Health Care Governance, Erasmus School of Health Policy and Management at Erasmus University Rotterdam, Rotterdam, The Netherlands
| | - Mark F Cotton
- FAM-CRU, Department of Paediatrics and Child Health, Stellenbosch University and Tygerberg Children's Hospital, Cape Town, South Africa
| | - A Marceline van Furth
- Department of Paediatric Infectious Diseases and Immunology, VU University Medical Centre, Amsterdam, The Netherlands
| |
Collapse
|
6
|
Saberi P, Ming K, Legnitto D, Neilands TB, Gandhi M, Johnson MO. Feasibility and acceptability of novel methods to estimate antiretroviral adherence: A longitudinal study. PLoS One 2019; 14:e0210791. [PMID: 30645641 PMCID: PMC6333375 DOI: 10.1371/journal.pone.0210791] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2018] [Accepted: 01/02/2019] [Indexed: 11/25/2022] Open
Abstract
Due to marked reductions in morbidity and mortality, antiretroviral (ARV) adherence monitoring is of high interest. Researchers and clinicians often resort to the most feasible and cost-effective adherence methods possible, which may result in biased or inaccurate estimates and require the physical presence of a participant at a research or clinic site. The objective of our study was to evaluate the feasibility and acceptability of three objective, innovative, and remote methods to estimate ARV adherence which may be conducted with less time and financial resources in a wide range of clinic and research settings. These three methods included: (a) text-messaged photographs of pharmacy refill dates to measure refill-based adherence, (b) text-messaged photographs of ARV medications to estimate pill-count-based adherence, and (c) home-collected hair samples for the measurement of ARV concentration to determine pharmacologic-based adherence. We conducted a pilot study from March through October 2017 to examine the feasibility and acceptability of these three adherence measures and the remotely conducted study procedures in 93 adults living with HIV nationwide. From our diverse national sample of participants, 95.7% were retained until the end of the study, 89.9% sent all text messages, and 84.3% sent all hair samples. Approximately 74.2% of participants reported excellent overall experience with the study, 60.2% were very or extremely satisfied with participating in a hair collection study, and 76.3% noted extremely high likelihood of participating in a similar study including text messaging pictures of medications or refill dates. We noted high levels of feasibility and acceptability with the remote study methodology, collection of photographed and text messaged pharmacy refill dates and pill counts, and home-collected hair samples. Here we describe the feasibility and acceptability metrics, results from the exit qualitative interviews with the participants, and lessons learned. These adherence measures represent innovative approaches to expand monitoring tools for HIV treatment and prevention adherence in future research.
Collapse
Affiliation(s)
- Parya Saberi
- Department of Medicine, Division of Prevention Sciences, University of California San Francisco, San Francisco, CA, United States of America
| | - Kristin Ming
- Department of Medicine, Division of Prevention Sciences, University of California San Francisco, San Francisco, CA, United States of America
| | - Dominique Legnitto
- Department of Medicine, Division of Prevention Sciences, University of California San Francisco, San Francisco, CA, United States of America
| | - Torsten B. Neilands
- Department of Medicine, Division of Prevention Sciences, University of California San Francisco, San Francisco, CA, United States of America
| | - Monica Gandhi
- Department of Medicine, Division of HIV, Infectious Diseases, and Global Medicine, University of California San Francisco, San Francisco, CA, United States of America
| | - Mallory O. Johnson
- Department of Medicine, Division of Prevention Sciences, University of California San Francisco, San Francisco, CA, United States of America
| |
Collapse
|
7
|
Antiretroviral drug concentrations in hair are associated with virologic outcomes among young people living with HIV in Tanzania. AIDS 2018; 32:1115-1123. [PMID: 29438196 PMCID: PMC5945296 DOI: 10.1097/qad.0000000000001788] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
OBJECTIVE We assessed the relationship of self-reported adherence versus antiretroviral therapy (ART) concentrations in hair with virologic outcomes among young people living with HIV. DESIGN This was a cross-sectional study that enrolled young people living with HIV age 11-24 years, who attended a youth HIV clinic in Moshi, Tanzania. METHODS ART adherence was assessed by self-report, drug concentration in hair samples, and plasma HIV-1 RNA measurements. Those with virologic failure, defined as plasma HIV-1 RNA more than 400 copies/ml, had genotypic resistance assessed. Receiver operating characteristic curves were used to evaluate ART-concentration threshold cutoffs for virologic suppression, after excluding those with known high-level resistance mutations. RESULTS Among 280 young people enrolled, 227 were included in the final analysis. Seventy-two (32%) self-reported inadequate adherence and 91 (40%) had virologic failure. Hair ART-concentration (P < 0.001), but not self-reported adherence (P = 0.53), was associated with virologic outcome. Sixty-seven (74%) of those with virologic failure had resistance testing performed, of whom 60% had high-level resistance. Receiver operating characteristic curves demonstrated moderate or high classification performance for association with virologic suppression with specific hair ART-concentration cutoffs for lopinavir (1.8 ng/mg), efavirenz (1.04 ng/mg), and nevirapine (33.2 ng/mg). CONCLUSION Hair ART-concentrations were significantly associated with virologic outcomes among young people living with HIV. ART-concentration thresholds associated with virologic suppression are proposed. Hair analysis may provide a noninvasive, cost-effective adherence assessment tool in settings with limited second and third-line treatment options.
Collapse
|
8
|
Wu Y, Yang J, Duan C, Chu L, Chen S, Qiao S, Li X, Deng H. Simultaneous determination of antiretroviral drugs in human hair with liquid chromatography-electrospray ionization-tandem mass spectrometry. J Chromatogr B Analyt Technol Biomed Life Sci 2018; 1083:209-221. [PMID: 29550683 DOI: 10.1016/j.jchromb.2018.03.021] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2017] [Revised: 01/04/2018] [Accepted: 03/10/2018] [Indexed: 11/29/2022]
Abstract
The determination of the concentrations of antiretroviral drugs in hair is believed to be an important means for the assessment of the long-term adherence to highly active antiretroviral therapy. At present, the combination of tenofovir, lamivudine and nevirapine is widely used in China. However, there was no research reporting simultaneous determination of the three drugs in hair. The present study aimed to develop a sensitive method for simultaneous determination of the three drugs in 2-mg and 10-mg natural hair (Method 1 and Method 2). Hair samples were incubated in methanol at 37 °C for 16 h after being rinsed with methanol twice. The analysis was performed on high performance liquid chromatography tandem mass spectrometry with electronic spray ionization in positive mode and multiple reactions monitoring. Method 1 and Method 2 showed the limits of detection at 160 and 30 pg/mg for tenofovir, at 5 and 6 pg/mg for lamivudine and at 15 and 3 pg/mg for nevirapine. The two methods showed good linearity with the square of correlation coefficient >0.99 at the ranges of 416-5000 and 77-5000 pg/mg for tenofovir, 12-5000 and 15-5000 pg/mg for lamivudine and 39-50,000 and 6-50,000 pg/mg for nevirapine. They gave intra-day and inter-day coefficient of variation <15% and the recoveries ranging from 80.6 to 122.3% and from 83.1 to 114.4%. Method 2 showed LOD and LOQ better than Method 1 for tenofovir and nevirapine and matched Method 1 for lamivudine, but there was high consistency between them in the determination of the three drugs in hair. The population analysis with Method 2 revealed that the concentrations in hair were decreased with the distance of hair segment away from the scalp for the three antiretroviral drugs.
Collapse
Affiliation(s)
- Yan Wu
- Key Laboratory of Child Development and Learning Science (Southeast University), Ministry of Education, and Institute of Child Development and Education, Southeast University, Nanjing 210096, China
| | - Jin Yang
- Key Laboratory of Child Development and Learning Science (Southeast University), Ministry of Education, and Institute of Child Development and Education, Southeast University, Nanjing 210096, China; School of Public Health, Southeast University, Nanjing 210009, China
| | - Cailing Duan
- Key Laboratory of Child Development and Learning Science (Southeast University), Ministry of Education, and Institute of Child Development and Education, Southeast University, Nanjing 210096, China
| | - Liuxi Chu
- Key Laboratory of Child Development and Learning Science (Southeast University), Ministry of Education, and Institute of Child Development and Education, Southeast University, Nanjing 210096, China
| | - Shenghuo Chen
- Key Laboratory of Child Development and Learning Science (Southeast University), Ministry of Education, and Institute of Child Development and Education, Southeast University, Nanjing 210096, China
| | - Shan Qiao
- Department of Health Promotion, Education and Behavior, South Carolina SmartState Center for Healthcare Quality (CHQ), Arnold School of Public Health, University of South Carolina, Columbia, SC 29208, USA
| | - Xiaoming Li
- Department of Health Promotion, Education and Behavior, South Carolina SmartState Center for Healthcare Quality (CHQ), Arnold School of Public Health, University of South Carolina, Columbia, SC 29208, USA
| | - Huihua Deng
- Key Laboratory of Child Development and Learning Science (Southeast University), Ministry of Education, and Institute of Child Development and Education, Southeast University, Nanjing 210096, China.
| |
Collapse
|
9
|
Saberi P, Ming K, Legnitto D, Neilands TB, Gandhi M, Johnson MO. Novel methods to estimate antiretroviral adherence: protocol for a longitudinal study. Patient Prefer Adherence 2018; 12:1033-1042. [PMID: 29950816 PMCID: PMC6014386 DOI: 10.2147/ppa.s166380] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
BACKGROUND There is currently no gold standard for assessing antiretroviral (ARV) adherence, so researchers often resort to the most feasible and cost-effective methods possible (eg, self-report), which may be biased or inaccurate. The goal of our study was to evaluate the feasibility and acceptability of innovative and remote methods to estimate ARV adherence, which can potentially be conducted with less time and financial resources in a wide range of clinic and research settings. Here, we describe the research protocol for studying these novel methods and some lessons learned. METHODS The 6-month pilot study aimed to examine the feasibility and acceptability of a remotely conducted study to evaluate the correlation between: 1) text-messaged photographs of pharmacy refill dates for refill-based adherence; 2) text-messaged photographs of pills for pill count-based adherence; and 3) home-collected hair sample measures of ARV concentration for pharmacologic-based adherence. Participants were sent monthly automated text messages to collect refill dates and pill counts that were taken and sent via mobile telephone photographs, and hair collection kits every 2 months by mail. At the study end, feasibility was calculated by specific metrics, such as the receipt of hair samples and responses to text messages. Participants completed a quantitative survey and qualitative exit interviews to examine the acceptability of these adherence evaluation methods. The relationship between the 3 novel metrics of adherence and self-reported adherence will be assessed. DISCUSSION Investigators conducting adherence research are often limited to using either self-reported adherence, which is subjective, biased, and often overestimated, or other more complex methods. Here, we describe the protocol for evaluating the feasibility and acceptability of 3 novel and remote methods of estimating adherence, with the aim of evaluating the relationships between them. Additionally, we note the lessons learned from the protocol implementation to date. We expect that these novel measures will be feasible and acceptable. The implications of this research will be the identification and evaluation of innovative and accurate metrics of ARV adherence for future implementation.
Collapse
Affiliation(s)
- Parya Saberi
- Department of Medicine, University of California San Francisco, San Francisco, CA, USA
- Correspondence: Parya Saberi, Department of Medicine, University of California San Francisco, UCSF Box 0886, San Francisco, CA 94143, USA, Tel +1 415 476 6357, Fax +1 415 476 5348, Email
| | - Kristin Ming
- Department of Medicine, University of California San Francisco, San Francisco, CA, USA
| | - Dominique Legnitto
- Department of Medicine, University of California San Francisco, San Francisco, CA, USA
| | - Torsten B Neilands
- Department of Medicine, University of California San Francisco, San Francisco, CA, USA
| | - Monica Gandhi
- Department of Medicine, University of California San Francisco, San Francisco, CA, USA
| | - Mallory O Johnson
- Department of Medicine, University of California San Francisco, San Francisco, CA, USA
| |
Collapse
|
10
|
A cross-sectional study to evaluate second line virological failure and elevated bilirubin as a surrogate for adherence to atazanavir/ritonavir in two urban HIV clinics in Lilongwe, Malawi. BMC Infect Dis 2017; 17:461. [PMID: 28673254 PMCID: PMC5496231 DOI: 10.1186/s12879-017-2528-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2017] [Accepted: 06/06/2017] [Indexed: 11/11/2022] Open
Abstract
Background Malawi’s national antiretroviral therapy program provides atazanavir/ritonavir–based second line regimens which cause concentration-dependent rise in indirect bilirubin. We sought to determine if elevated bilirubin, as a surrogate of atazanavir/ritonavir adherence, can aid in the evaluation of second line virological failure in Malawi. Methods We conducted a cross-sectional study of HIV-infected patients ≥15 years who were on boosted protease inhibitor-based second line antiretroviral therapy for at least 6 months in two urban HIV clinics in Lilongwe, Malawi. Antiretroviral therapy history and adherence data were extracted from the electronic medical records and blood was drawn for viral load, complete blood count, total bilirubin, and CD4 cell count at a clinic visit. Factors associated with virological failure were assessed using multivariate logistic regression model. Results Out of 376 patients on second line antiretroviral therapy evaluated, 372 (98.9%) were on atazanavir/ritonavir-based therapy and 142 (37.8%) were male. Mean age was 40.9 years (SD ± 10.1), mean duration on second line antiretroviral therapy was 41.9 months (SD ± 27.6) and 256 patients (68.1%) had elevated bilirubin >1.3 mg/dL. Overall, 35 (9.3%) patients had viral load >1000 copies/ml (virological failure). Among the virologically failing vs. non-failing patients, bilirubin was elevated in 34.3% vs. 72.0% respectively (p < 0.001), although adherence by pill count was similar (62.9% vs. 60.7%, p = 0.804). The odds of virological failure were higher for adults aged 25–40 years (adjusted odds ratio (aOR) 2.5, p = 0.048), those with CD4 cell count <100 (aOR 17.5, p < 0.001), and those with normal bilirubin levels (aOR 5.4, p < 0.001); but were lower for the overweight/obese patients (aOR 0.3, p = 0.026). Poor pill count adherence (aOR 0.7, p = 0.4) and male gender (aOR 1.2, p = 0.698) were not associated with second line virological failure. Conclusions Among patients receiving atazanavir/ritonavir-based second line antiretroviral therapy, bilirubin levels better predicted virological failure than pill count adherence. Therefore, strategic use of bilirubin and viral load testing to target adherence counseling and support may be cost-effective in monitoring second line antiretroviral therapy adherence and virological failure. Drug resistance testing targeted for patients with virological failure despite elevated bilirubin levels would facilitate timely switch to third line antiretroviral regimens whenever available.
Collapse
|
11
|
Phillips T, Brittain K, Mellins CA, Zerbe A, Remien RH, Abrams EJ, Myer L, Wilson IB. A Self-Reported Adherence Measure to Screen for Elevated HIV Viral Load in Pregnant and Postpartum Women on Antiretroviral Therapy. AIDS Behav 2017; 21:450-461. [PMID: 27278548 PMCID: PMC5145763 DOI: 10.1007/s10461-016-1448-0] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Maternal adherence to antiretroviral therapy (ART) is a concern and monitoring adherence presents a significant challenge in low-resource settings. We investigated the association between self-reported adherence, measured using a simple three-item scale, and elevated viral load (VL) among HIV-infected pregnant and postpartum women on ART in Cape Town, South Africa. This is the first reported use of this scale in a non-English speaking setting and it achieved good psychometric characteristics (Cronbach α = 0.79). Among 452 women included in the analysis, only 12 % reported perfect adherence on the self-report scale, while 92 % had a VL <1000 copies/mL. Having a raised VL was consistently associated with lower median adherence scores and the area under the curve for the scale was 0.599, 0.656 and 0.642 using a VL cut-off of ≥50, ≥1000 and ≥10000 copies/mL, respectively. This simple self-report adherence scale shows potential as a first-stage adherence screener in this setting. Maternal adherence monitoring in low resource settings requires attention in the era of universal ART, and the value of this simple adherence scale in routine ART care settings warrants further investigation.
Collapse
Affiliation(s)
- Tamsin Phillips
- Division of Epidemiology & Biostatistics, Faculty of Health Sciences, School of Public Health & Family Medicine, University of Cape Town, Cape Town, South Africa.
| | - Kirsty Brittain
- Division of Epidemiology & Biostatistics, Faculty of Health Sciences, School of Public Health & Family Medicine, University of Cape Town, Cape Town, South Africa
| | - Claude A Mellins
- HIV Center for Clinical and Behavioral Studies, New York State Psychiatric Institute, Columbia University, New York, NY, USA
| | - Allison Zerbe
- ICAP, Mailman School of Public Health, Columbia University, New York, NY, USA
| | - Robert H Remien
- HIV Center for Clinical and Behavioral Studies, New York State Psychiatric Institute, Columbia University, New York, NY, USA
| | - Elaine J Abrams
- ICAP, Mailman School of Public Health, Columbia University, New York, NY, USA
- College of Physicians & Surgeons, Columbia University, New York, NY, USA
| | - Landon Myer
- Division of Epidemiology & Biostatistics, Faculty of Health Sciences, School of Public Health & Family Medicine, University of Cape Town, Cape Town, South Africa
| | - Ira B Wilson
- Department of Health Services, Policy & Practice, Brown University School of Public Health, Providence, RI, USA
| |
Collapse
|
12
|
Previously Unidentified Single Nucleotide Polymorphisms in HIV/AIDS Cases Associate with Clinical Parameters and Disease Progression. BIOMED RESEARCH INTERNATIONAL 2016; 2016:2742648. [PMID: 28050553 PMCID: PMC5165134 DOI: 10.1155/2016/2742648] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 08/19/2016] [Accepted: 11/08/2016] [Indexed: 12/20/2022]
Abstract
The genetic background of an individual plays an important role in the progression of HIV infection to AIDS. Identifying previously unknown or uncharacterized single nucleotide polymorphisms (SNPs) that associate with disease progression may reveal important therapeutic targets and provide a greater understanding of disease pathogenesis. In the present study, we employed ultra-high multiplex PCR on an Ion Torrent next-generation sequencing platform to sequence 23 innate immune genes from 94 individuals with HIV/AIDS. This data was used to identify potential associations of SNPs with clinical parameters and disease progression. SNPs that associated with an increased viral load were identified in the genes for the interleukin 15 receptor (IL15RA), toll-like receptor 7 (TLR7), tripartite motif-containing protein 5 (TRIM5), and two killer-cell immunoglobulin-like receptors (KIR2DL1 and KIR2DL3). Additionally, SNPs that associated with progression from HIV infection to AIDS were identified in two 2'-5'-oligoadenylate synthetase genes (OAS2 and OAS3). In contrast, other SNPs identified in OAS2 and OAS3 genes, as well as in the TRIM5 and KIR2DS4 genes, were associated with a slower progression of disease. Taken together, our data demonstrates the utility of ultra-high multiplex PCR in identifying polymorphisms of potential clinical significance and further,identifies SNPs that may play a role in HIV pathogenesis.
Collapse
|
13
|
Yan J, Liu J, Su B, Pan X, Wang Z, Wu J, Zhang J, Ruan Y, Hsi J, Liao L, Shao Y, Xing H. Lamivudine Concentration in Hair and Prediction of Virologic Failure and Drug Resistance among HIV Patients Receiving Free ART in China. PLoS One 2016; 11:e0154421. [PMID: 27119346 PMCID: PMC4847920 DOI: 10.1371/journal.pone.0154421] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2016] [Accepted: 04/13/2016] [Indexed: 11/29/2022] Open
Abstract
Background The assessment of adherence to antiretroviral therapy (ART) is important in order to predict treatment outcomes. Lamivudine (3TC) is one of the most widely used NRTIs in China, but its concentrations in hair and association with virologic failure and drug resistance have not been studied. Methods We conducted a cross-sectional survey to investigate 3TC concentrations in hair as a predictor of virologic failure and drug resistance among HIV patients receiving free ART. We also compared the capacity of hair 3TC concentrations with self-reported adherence in predicting virologic responses. Hair 3TC concentrations were detected through the LC-MS/MS system. Results In patients without HIV drug resistance (HIVDR), with a threshold hair 3TC concentration of 260 ng/g, the sensitivity and specificity in predicting virologic suppression were 76.9% and 89.9%, respectively. Some factors, including CD4+ cell counts, initial treatment regimens with 3TC, and current regimens with second-line drugs, influenced the association between hair 3TC concentrations and virologic suppression. In patients who experienced virologic failure with HIVDR, with a threshold of 180 ng/g, the sensitivity and specificity were 70.0% and 74.4%, respectively. Hair 3TC concentrations had higher sensitivity and specificity in predicting virologic failure and drug resistance than self-reported adherence. Conclusions The hair 3TC concentration was a stronger indicator than self-reported adherence in predicting virologic failure and drug resistance in HIV patients receiving free ART.
Collapse
Affiliation(s)
- Jing Yan
- State Key Laboratory of Infectious Disease Prevention and Control (SKLID), National Center for AIDS/STD Control (NCAIDS) and Prevention, Chinese Center for Disease Control and Prevention (China CDC), Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Beijing, China
| | - Jia Liu
- Henan Center for Disease Control and Prevention, Zhenzhou, Henan Province, China
| | - Bin Su
- Anhui Center for Disease Control and Prevention, Hefei, Anhui Province, China
| | - Xiaohong Pan
- Zhejiang Center for Disease Control and Prevention, Hangzhou, Zhejiang Province, China
| | - Zhe Wang
- Henan Center for Disease Control and Prevention, Zhenzhou, Henan Province, China
| | - Jianjun Wu
- Anhui Center for Disease Control and Prevention, Hefei, Anhui Province, China
| | - Jiafeng Zhang
- Zhejiang Center for Disease Control and Prevention, Hangzhou, Zhejiang Province, China
| | - Yuhua Ruan
- State Key Laboratory of Infectious Disease Prevention and Control (SKLID), National Center for AIDS/STD Control (NCAIDS) and Prevention, Chinese Center for Disease Control and Prevention (China CDC), Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Beijing, China
| | - Jenny Hsi
- State Key Laboratory of Infectious Disease Prevention and Control (SKLID), National Center for AIDS/STD Control (NCAIDS) and Prevention, Chinese Center for Disease Control and Prevention (China CDC), Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Beijing, China
| | - Lingjie Liao
- State Key Laboratory of Infectious Disease Prevention and Control (SKLID), National Center for AIDS/STD Control (NCAIDS) and Prevention, Chinese Center for Disease Control and Prevention (China CDC), Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Beijing, China
| | - Yiming Shao
- State Key Laboratory of Infectious Disease Prevention and Control (SKLID), National Center for AIDS/STD Control (NCAIDS) and Prevention, Chinese Center for Disease Control and Prevention (China CDC), Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Beijing, China
| | - Hui Xing
- State Key Laboratory of Infectious Disease Prevention and Control (SKLID), National Center for AIDS/STD Control (NCAIDS) and Prevention, Chinese Center for Disease Control and Prevention (China CDC), Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Beijing, China
- * E-mail:
| |
Collapse
|
14
|
Prasitsuebsai W, Kerr SJ, Truong KH, Ananworanich J, Do VC, Nguyen LV, Kurniati N, Kosalaraksa P, Sudjaritruk T, Chokephaibulkit K, Thammajaruk N, Singtoroj T, Teeraananchai S, Horng H, Bacchetti P, Gandhi M, Sohn AH. Using Lopinavir Concentrations in Hair Samples to Assess Treatment Outcomes on Second-Line Regimens Among Asian Children. AIDS Res Hum Retroviruses 2015; 31:1009-14. [PMID: 26200586 PMCID: PMC4576945 DOI: 10.1089/aid.2015.0111] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
We conducted a prospective monitoring study to determine whether antiretroviral (ARV) levels in hair of Asian children on second-line protease inhibitor-based ARV therapy (ART) are associated with virologic failure (VF), compared to plasma drug levels and self-reported adherence. HIV-infected Asian children on second-line ART regimens were enrolled into a longitudinal cohort. Traditional adherence measures, plasma, and hair samples were collected 24 weeks after study enrollment. Hair ARV levels were determined via liquid chromatography/tandem mass spectrometry. Among 149 children on lopinavir/ritonavir-based regimens, 47% were female; the median [interquartile range (IQR)] age was 10.3 (7.9-13.3) years. The median CD4% was 26% (IQR 21.7-32.1%) and the median CD4 cell count 754 (IQR 596-1,013) cells/mm(3). The median duration of lopinavir-based ART prior to week 24 of the study was 2.9 (IQR 1.6-4.2) years. Adherence was >95% in 91% (135/148) by visual analogue scale and 89% (129/145) by pill count. The median lopinavir hair concentrations were 5.43 (IQR 3.21-9.01) ng/mg in children with HIV RNA >1,000 copies/ml and 9.96 (IQR 6.51-12.31) ng/mg in children with HIV RNA <1,000 copies/ml (p = 0.003). Plasma trough and lopinavir hair concentrations were not statistically significantly correlated (Pearson's correlation coefficient 0.20; p = 0.13). Increasing lopinavir hair concentrations in quartiles were strongly associated with virologic success (odds ratios ≥4.0, overall p = 0.02), while self-reported adherence, pill count, and plasma lopinavir levels were not. Based on this first report of hair ARV concentrations and virologic outcomes in children, ARV hair concentrations, representing longer-term adherence, may be useful to identify children at risk for VF.
Collapse
Affiliation(s)
- Wasana Prasitsuebsai
- The HIV Netherlands Australia Thailand Research Collaboration (HIV-NAT), The Thai Red Cross AIDS Research Centre, Bangkok, Thailand
| | - Stephen J. Kerr
- The HIV Netherlands Australia Thailand Research Collaboration (HIV-NAT), The Thai Red Cross AIDS Research Centre, Bangkok, Thailand
| | | | - Jintanat Ananworanich
- U.S. Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, Maryland and the Henry M. Jackson Foundation for the Advancement of Military Medicine, Bethesda, Maryland
| | - Viet Chau Do
- Children's Hospital 2, Ho Chi Minh City, Vietnam
| | | | - Nia Kurniati
- Cipto Mangunkusumo General Hospital, Jakarta, Indonesia
| | - Pope Kosalaraksa
- Division of Infectious Diseases, Department of Pediatrics, Khon Kaen University, Khon Kaen, Thailand
| | - Tavitiya Sudjaritruk
- Research Institute for Health Sciences and Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
| | | | - Narukjaporn Thammajaruk
- The HIV Netherlands Australia Thailand Research Collaboration (HIV-NAT), The Thai Red Cross AIDS Research Centre, Bangkok, Thailand
| | - Thida Singtoroj
- TREAT Asia/amfAR—The Foundation for AIDS Research, Bangkok, Thailand
| | - Sirinya Teeraananchai
- The HIV Netherlands Australia Thailand Research Collaboration (HIV-NAT), The Thai Red Cross AIDS Research Centre, Bangkok, Thailand
| | - Howard Horng
- Department of Bioengineering and Therapeutic Sciences, University of California, San Francisco, San Francisco, California
| | - Peter Bacchetti
- Department of Epidemiology and Biostatistics, University of California, San Francisco, San Francisco, California
| | - Monica Gandhi
- Department of Medicine, University of California, San Francisco, San Francisco, California
| | - Annette H. Sohn
- TREAT Asia/amfAR—The Foundation for AIDS Research, Bangkok, Thailand
| |
Collapse
|
15
|
Wu P, Johnson BA, Nachega JB, Wu B, Ordonez CE, Hare AQ, Kearns R, Murphy R, Sunpath H, Marconi VC. The combination of pill count and self-reported adherence is a strong predictor of first-line ART failure for adults in South Africa. Curr HIV Res 2015; 12:366-75. [PMID: 25426940 DOI: 10.2174/1570162x1205141121102501] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2014] [Revised: 08/28/2014] [Accepted: 09/19/2014] [Indexed: 11/22/2022]
Abstract
BACKGROUND Suboptimal adherence to antiretroviral therapy (ART) is a strong predictor of virologic failure (VF) among people with HIV. Various methods such as patient self-report, pill counts and pharmacy refills have been utilized to monitor adherence. However, there are limited data on the accuracy of combining methods to better predict VF in routine clinical settings. We examined various methods to assess adherence including pill count, medication possession ratio (MPR), and self-reported adherence in order to determine which was most highly associated with VF after > 6 months on ART. METHODS We conducted a secondary analysis of data from a case-control study. At enrollment, pharmacy refill data were collected retrospectively from the medical chart, pill counts were completed to derive a pill count adherence ratio (PCAR) and a self-report questionnaire was administered to all participants. Parametric smooth splines and receiver operator characteristic (ROC) analyses were carried out to assess the accuracy of the adherence methods. RESULTS 458 patients were enrolled from October 2010 to June 2012. Of these, 158 (34.50%) experienced VF (cases) and 300 (65.50%) were controls. The median (IQR) PCAR was 1.10 (0.99-1.14) for cases and 1.13 (1.08-1.18) for controls (p < 0.0001). The median MPR was 1.00 (0.97-1.07) for cases and 1.03 (0.96-1.07) for controls (p = 0.83). Combination of PCAR and self-reported questions was highly associated with VF. CONCLUSION In this setting, a combination of pill count adherence and self-report adherence questions had the highest diagnostic accuracy for VF. Further validation of this simple, low-cost combination is warranted in large prospective studies.
Collapse
|
16
|
Duong M, Golzi A, Peytavin G, Piroth L, Froidure M, Grappin M, Buisson M, Kohli E, Chavanet P, Portier H. Usefulness of Therapeutic Drug Monitoring of Antiretrovirals in Routine Clinical Practice. HIV CLINICAL TRIALS 2015; 5:216-23. [PMID: 15472796 DOI: 10.1310/nxju-9erq-adww-uc5x] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
BACKGROUND Clinical trials have shown that therapeutic drug monitoring (TDM) of antiretrovirals (ARV) improves patient care. However, little is known about the usefulness of TDM in routine practice. METHOD We reviewed all the trough concentrations of protease inhibitors and nonnucleoside reverse transcriptase inhibitors that were performed for therapeutic failure, suspected drug toxicity, or routine purposes. RESULTS Between 1998 and 2001, 146 TDMs were done in 109 HIV patients. Of the 48 patients with therapeutic failure, 62% had resistance to ARV with adequate ARV concentrations, 16% had insufficient drug exposure without any ARV resistance mutations, and 16% combined both resistance and suboptimal drug concentrations. Subsequent therapeutic interventions (increasing adherence and/or changing HAART) resulted in an undetectable viral load in 37.5% of the patients (14/48). Five (24%) of 21 patients with suspected drug toxicity had high drug concentrations associated with side effects. In all the cases, adverse events regressed after reduction of drug dosage. Of the 77 TDMs done for routine purposes, 26% were outside the therapeutic range. CONCLUSION The data show that TDM of ARVs in the clinical setting provides important information that can be used to improve the management of HIV patients receiving antiretroviral therapy.
Collapse
Affiliation(s)
- Michel Duong
- Division of Infectious Diseases, University Hospital, Dijon, France.
| | | | | | | | | | | | | | | | | | | |
Collapse
|
17
|
Nabukeera-Barungi N, Kalyesubula I, Kekitiinwa A, Byakika-Tusiime J, Musoke P. Adherence to antiretroviral therapy in children attending Mulago Hospital, Kampala. ACTA ACUST UNITED AC 2013; 27:123-31. [PMID: 17565809 DOI: 10.1179/146532807x192499] [Citation(s) in RCA: 82] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Abstract
BACKGROUND Non-adherence reduces the effectiveness of antiretroviral therapy in children attending the paediatric HIV/AIDS clinic at Mulago Hospital, Kampala. AIM To determine the levels of adherence to HAART and identify factors associated with non-adherence. METHODS A cross-sectional study of 170 children aged 2-18 years. Adherence to HAART was defined as taking > or =95% of prescribed medication. It was determined using three measures: a 3-day self-report by the caregivers, clinic-based pill counts at enrolment and home-based unannounced pill counts 2-3 weeks later. RESULTS The 3-day self-reported > or =95% adherence was 89.4% (n=170). Using clinic-based pill counts, 94.1% (n=170) had > or =95% adherence to treatment compared with only 72% (n=164) by unannounced pill counts. When the primary caregiver was the only one who knew the child's serostatus, he/she was three times more likely to be non-adherent (p=0.02, OR 3.34, 95% CI 1.14-9.82). Those who had been hospitalised twice or more before starting HAART were more likely to have > or =95% adherence (p=0.02, OR 0.44, 95% CI 0.20-0.92). CONCLUSION The majority of children had good adherence levels when estimated by unannounced pill counts. Disclosing the child's HIV serostatus only to the primary caregiver and having been hospitalised only once or not at all were associated with poor adherence.
Collapse
|
18
|
Bulgiba A, Mohammed UY, Chik Z, Lee C, Peramalah D. How well does self-reported adherence fare compared to therapeutic drug monitoring in HAART? Prev Med 2013; 57 Suppl:S34-6. [PMID: 23313585 DOI: 10.1016/j.ypmed.2013.01.002] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/16/2012] [Accepted: 01/02/2013] [Indexed: 11/28/2022]
Abstract
OBJECTIVE The aim of the study was to determine how well self-reported adherence fares compared to therapeutic drug monitoring in monitoring HAART adherence. METHODS We administered a validated self-reported adherence (SRA) questionnaire to 925 HIV patients on HAART in a large Malaysian hospital from 2010 to 11. We also performed Therapeutic Drug monitoring (TDM) by concurrently collecting and testing blood samples for Efavirenz, Nevirapine and Lamivudine using Liquid Chromatography/Mass Spectrometry. We compared the SRA against the TDM results. Sensitivity, specificity, positive (PPV) and negative predictive (NPV) and diagnostic accuracy values were computed for each drug. RESULTS Self-reported adherence (SRA) over-estimates adherence by between 6 and 10 percentage points compared to therapeutic drug monitoring (TDM). SRA is highly sensitive with sensitivity exceeding 0.90 but is not very specific (0.56-0.63). PPV for SRA ranged between 0.76 (Lamivudine) and 0.84 (Efavirenz) while NPV ranged between 0.78 (Lamivudine) and 0.81 (Efavirenz). Overall diagnostic accuracy ranged between 0.76 (Lamivudine) and 0.84 (Nevirapine). CONCLUSION Self-reported adherence is a surprisingly accurate instrument for measuring HAART adherence compared to TDM and can be reliably used in practice in resource-poor settings.
Collapse
Affiliation(s)
- Awang Bulgiba
- Julius Centre University of Malaya, Department of Social and Preventive Medicine, Faculty of Medicine, University of Malaya, Malaysia.
| | | | | | | | | |
Collapse
|
19
|
Thompson MA, Mugavero MJ, Amico KR, Cargill VA, Chang LW, Gross R, Orrell C, Altice FL, Bangsberg DR, Bartlett JG, Beckwith CG, Dowshen N, Gordon CM, Horn T, Kumar P, Scott JD, Stirratt MJ, Remien RH, Simoni JM, Nachega JB. Guidelines for improving entry into and retention in care and antiretroviral adherence for persons with HIV: evidence-based recommendations from an International Association of Physicians in AIDS Care panel. Ann Intern Med 2012; 156:817-33, W-284, W-285, W-286, W-287, W-288, W-289, W-290, W-291, W-292, W-293, W-294. [PMID: 22393036 PMCID: PMC4044043 DOI: 10.7326/0003-4819-156-11-201206050-00419] [Citation(s) in RCA: 481] [Impact Index Per Article: 40.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
DESCRIPTION After HIV diagnosis, timely entry into HIV medical care and retention in that care are essential to the provision of effective antiretroviral therapy (ART). Adherence to ART is among the key determinants of successful HIV treatment outcome and is essential to minimize the emergence of drug resistance. The International Association of Physicians in AIDS Care convened a panel to develop evidence-based recommendations to optimize entry into and retention in care and ART adherence for people with HIV. METHODS A systematic literature search was conducted to produce an evidence base restricted to randomized, controlled trials and observational studies with comparators that had at least 1 measured biological or behavioral end point. A total of 325 studies met the criteria. Two reviewers independently extracted and coded data from each study using a standardized data extraction form. Panel members drafted recommendations based on the body of evidence for each method or intervention and then graded the overall quality of the body of evidence and the strength for each recommendation. RECOMMENDATIONS Recommendations are provided for monitoring entry into and retention in care, interventions to improve entry and retention, and monitoring of and interventions to improve ART adherence. Recommendations cover ART strategies, adherence tools, education and counseling, and health system and service delivery interventions. In addition, they cover specific issues pertaining to pregnant women, incarcerated individuals, homeless and marginally housed individuals, and children and adolescents, as well as substance use and mental health disorders. Recommendations for future research in all areas are also provided.
Collapse
|
20
|
Saberi P, Johnson MO, McCulloch CE, Vittinghoff E, Neilands TB. Medication adherence: tailoring the analysis to the data. AIDS Behav 2011; 15:1447-53. [PMID: 21833689 DOI: 10.1007/s10461-011-9951-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
The purpose of this paper is to explore more comprehensive methods to analyze antiretroviral non-adherence data. Using illustrative data and simulations, we investigated the value of using binary logistic regression (LR; dichotomized at 0% non-adherence) versus a hurdle model (combination of LR plus generalized linear model for >0% non-adherence) versus a zero-inflated negative binomial (ZINB) model (simultaneously modeling 0% non-adherence and >0% non-adherence). In simulation studies, the hurdle and ZINB models had similar power but both had higher power in comparison to LR alone. The hurdle model had higher power than ZINB in settings where covariate effects were restricted to one or the other part of the model (0% non-adherence or degree of non-adherence). Use of the hurdle and ZINB models are powerful and valuable approaches in analyzing adherence data which yield a more complete picture than LR alone. We recommend adoption of this methodology for future antiretroviral adherence research.
Collapse
|
21
|
A new multidisciplinary home care telemedicine system to monitor stable chronic human immunodeficiency virus-infected patients: a randomized study. PLoS One 2011; 6:e14515. [PMID: 21283736 PMCID: PMC3024968 DOI: 10.1371/journal.pone.0014515] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2010] [Accepted: 12/01/2010] [Indexed: 12/02/2022] Open
Abstract
Background Antiretroviral therapy has changed the natural history of human immunodeficiency virus (HIV) infection in developed countries, where it has become a chronic disease. This clinical scenario requires a new approach to simplify follow-up appointments and facilitate access to healthcare professionals. Methodology We developed a new internet-based home care model covering the entire management of chronic HIV-infected patients. This was called Virtual Hospital. We report the results of a prospective randomised study performed over two years, comparing standard care received by HIV-infected patients with Virtual Hospital care. HIV-infected patients with access to a computer and broadband were randomised to be monitored either through Virtual Hospital (Arm I) or through standard care at the day hospital (Arm II). After one year of follow up, patients switched their care to the other arm. Virtual Hospital offered four main services: Virtual Consultations, Telepharmacy, Virtual Library and Virtual Community. A technical and clinical evaluation of Virtual Hospital was carried out. Findings Of the 83 randomised patients, 42 were monitored during the first year through Virtual Hospital (Arm I) and 41 through standard care (Arm II). Baseline characteristics of patients were similar in the two arms. The level of technical satisfaction with the virtual system was high: 85% of patients considered that Virtual Hospital improved their access to clinical data and they felt comfortable with the videoconference system. Neither clinical parameters [level of CD4+ T lymphocytes, proportion of patients with an undetectable level of viral load (p = 0.21) and compliance levels >90% (p = 0.58)] nor the evaluation of quality of life or psychological questionnaires changed significantly between the two types of care. Conclusions Virtual Hospital is a feasible and safe tool for the multidisciplinary home care of chronic HIV patients. Telemedicine should be considered as an appropriate support service for the management of chronic HIV infection. Trial Registration Clinical-Trials.gov: NCT01117675.
Collapse
|
22
|
Unge C, Södergård B, Marrone G, Thorson A, Lukhwaro A, Carter J, Ilako F, Ekström AM. Long-term adherence to antiretroviral treatment and program drop-out in a high-risk urban setting in sub-Saharan Africa: a prospective cohort study. PLoS One 2010; 5:e13613. [PMID: 21049045 PMCID: PMC2963610 DOI: 10.1371/journal.pone.0013613] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2010] [Accepted: 10/01/2010] [Indexed: 12/04/2022] Open
Abstract
Background Seventy percent of urban populations in sub-Saharan Africa live in slums. Sustaining HIV patients in these high-risk and highly mobile settings is a major future challenge. This study seeks to assess program retention and to find determinants for low adherence to antiretroviral treatment (ART) and drop-out from an established HIV/ART program in Kibera, Nairobi, one of Africa's largest informal urban settlements. Methods and Findings A prospective open cohort study of 800 patients was performed at the African Medical Research Foundation (AMREF) clinic in the Kibera slum. Adherence to ART and drop-out from the ART program were independent outcomes. Two different adherence measures were used: (1) “dose adherence” (the proportion of a prescribed dose taken over the past 4 days) and (2) “adherence index” (based on three adherence questions covering dosing, timing and special instructions). Drop-out from the program was calculated based on clinic appointment dates and number of prescribed doses, and a patient was defined as being lost to follow-up if over 90 days had expired since the last prescribed dose. More than one third of patients were non-adherent when all three aspects of adherence – dosing, timing and special instructions – were taken into account. Multivariate logistic regression revealed that not disclosing HIV status, having a low level of education, living below the poverty limit (US$ 2/day) and not having a treatment buddy were significant predictors for non-adherence. Additionally, one quarter of patients dropped out for more than 90 days after the last prescribed ART dose. Not having a treatment buddy was associated with increased risk for drop-out (hazard ratio 1.4, 95% CI = 1.0–1.9). Conclusion These findings point to the dilemma of trying to sustain a growing number of people on life-long ART in conditions where prevailing stigma, poverty and food shortages threatens the long-term success of HIV treatment.
Collapse
Affiliation(s)
- Christian Unge
- Division of Global Health, IHCAR, Department of Public Health Sciences, Karolinska Institutet, Stockholm, Sweden.
| | | | | | | | | | | | | | | |
Collapse
|
23
|
Simplified Assessment of Antiretroviral Adherence and Prediction of Virological Efficacy in HIV-Infected Patients in Cambodia. AIDS Res Treat 2009; 2010:142076. [PMID: 21490902 PMCID: PMC3065847 DOI: 10.1155/2010/142076] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2009] [Accepted: 11/24/2009] [Indexed: 11/17/2022] Open
Abstract
Background. Adherence to antiviral therapy is important for HIV-infected people living in low- and middle-income countries, because of poor access to alternative regimens. Methods. We conducted a cross-sectional survey of adherence in Cambodian patients enrolled in the ESTHER program and treated with WHO first-line regimen for at least 6 months. The survey was based on a self-report questionnaire, drug assay, MCV measurement, visual analog scale, and viral load HIV RNA. Results. Two hundred fifty-nine patients treated for a median of 16 months participated in the survey. At inclusion in the program, 158 patients (61%) were ARV-naïve. The virological success rate was 71% overall and 81% in previously ARV-naive patients. Considered individually, the measures suggested perfect adherence in 71% to 93% of patients. In multivariate analysis adjusted for sex and therapeutic status before HAART initiation, only the biological markers were associated with virological efficacy. Self-funded treatment before entry to the program was highly predictive of virological failure. Conclusion. Adherence was excellent in these Cambodian patients. Biological markers were predictive of virological efficacy. MCV might thus serve as a simple alternative for assessing adherence and predicting virological efficacy among patients receiving AZT- or d4T-based regimens.
Collapse
|
24
|
Martin S, Elliott-DeSorbo DK, Calabrese S, Wolters PL, Roby G, Brennan T, Wood LV. A comparison of adherence assessment methods utilized in the United States: perspectives of researchers, HIV-infected children, and their caregivers. AIDS Patient Care STDS 2009; 23:593-601. [PMID: 19591601 DOI: 10.1089/apc.2009.0021] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
This study sought to elucidate methodological issues in adherence research by comparing multiple methods of assessing adherence to antiretroviral medication. From 2003 to 2004, 24 youths with vertically infected HIV disease (mean age = 14.0 years; range, 8-18) and their caregivers participated in a 6-month study. These children were all on highly active antiretroviral therapy (HAART) and were relatively healthy (mean CD4 absolute count = 711.8 +/- 604.5). Adherence was assessed with the Medication Event Monitoring System (MEMS), pill counts, and interviews. Patients and caregivers completed the Perceptions of Adherence Study Participation (PASP) questionnaire. MEMS provided the most detailed adherence information, and good reliability was indicated by significant correlations with medical markers. Pill counts provided similar adherence rates, while patients and caregivers reported nearly perfect adherence in interviews. Problems were experienced with each method: MEMS were expensive, had cap malfunctions, and lack a consistent guiding principle for data interpretation. With pill counts, families forgot to bring all medication bottles to clinic, and interviews were compromised by social desirability and difficulty reaching families by telephone. Most patients and caregivers believed study participation improved the child's adherence, although PASP ratings were unrelated to adherence at the study endpoint. While MEMS may be most reliable, pill counts offer comparable data and are less costly, while interviews seemed least accurate in this study. Most participants reported positive perceptions of their research experience. A consensus among researchers is needed for defining and measuring adherence, and specific recommendations are offered for achieving this goal.
Collapse
Affiliation(s)
- Staci Martin
- National Cancer Institute, Center for Cancer Research, Bethesda, Maryland
- Medical Illness Counseling Center, Chevy Chase, Maryland
| | - Deborah K. Elliott-DeSorbo
- National Cancer Institute, Center for Cancer Research, Bethesda, Maryland
- United States Air Force Academy, Colorado Springs, Colorado
| | - Sarah Calabrese
- National Cancer Institute, Center for Cancer Research, Bethesda, Maryland
| | - Pamela L. Wolters
- National Cancer Institute, Center for Cancer Research, Bethesda, Maryland
- Medical Illness Counseling Center, Chevy Chase, Maryland
| | - Gregg Roby
- National Cancer Institute, Center for Cancer Research, Bethesda, Maryland
- Intramural Clinical Management and Operations Branch, National Institute of Allergy and Infectious Diseases, Bethesda, Maryland
| | - Tara Brennan
- National Cancer Institute, Center for Cancer Research, Bethesda, Maryland
- Children's National Medical Center, Washington, D.C
| | - Lauren V. Wood
- National Cancer Institute, Center for Cancer Research, Bethesda, Maryland
- Vaccine Branch, Center for Cancer Research, Bethesda, Maryland
| |
Collapse
|
25
|
Bajunirwe F, Arts EJ, Tisch DJ, King CH, Debanne SM, Sethi AK. Adherence and treatment response among HIV-1-infected adults receiving antiretroviral therapy in a rural government hospital in Southwestern Uganda. ACTA ACUST UNITED AC 2009; 8:139-47. [PMID: 19258526 DOI: 10.1177/1545109709332470] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
BACKGROUND Large-scale, government-based antiretroviral therapy (ART) programs in rural areas of resource-poor countries remain largely unevaluated. METHODS We conducted a retrospective review of all patients receiving ART (n = 399) to assess survival and retention in care and a prospective evaluation of patients on ART for at least 6 months (n = 175). We used 3-day self-report to measure adherence. RESULTS The probability (95% confidence interval [CI]) of surviving and remaining in care was 0.76 (0.72, 0.81) at 1 year. Men and patients with advanced disease were more likely to die or be lost to follow-up. At baseline, 149 (85%) reported 100% adherence. Nonadherence was associated with lack of suppression of viral replication (odds ratio [OR] = 4.5; 95% CI: 1.8, 11.5). Missing a scheduled clinic visit and lack of disclosure of HIV status were associated with nonadherence. CONCLUSION Viral suppression was high, but counseling to include HIV disclosure to family and keeping scheduled clinic appointments may improve long-term adherence and treatment outcomes.
Collapse
Affiliation(s)
- Francis Bajunirwe
- Department of Community Health, Mbarara University of Science and Technology, Mbarara, Uganda.
| | | | | | | | | | | |
Collapse
|
26
|
|
27
|
Zaric GS, Bayoumi AM, Brandeau ML, Owens DK. The cost-effectiveness of counseling strategies to improve adherence to highly active antiretroviral therapy among men who have sex with men. Med Decis Making 2008; 28:359-76. [PMID: 18349433 DOI: 10.1177/0272989x07312714] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
OBJECTIVE Inadequate adherence to highly active antiretroviral therapy (HAART) may lead to poor health outcomes and the development of HIV strains that are resistant to HAART. The authors developed a model to evaluate the cost-effectiveness of counseling interventions to improve adherence to HAART among men who have sex with men (MSM). METHODS The authors developed a dynamic compartmental model that incorporates HIV treatment, adherence to treatment, and infection transmission and progression. All data estimates were obtained from secondary sources. The authors evaluated a counseling intervention given prior to initiation of HAART and before all changes in drug regimens, combined with phone-in support while on HAART. They considered a moderate-prevalence and a high-prevalence population of MSM. RESULTS If the impact of HIV transmission is ignored, the counseling intervention has a cost-effectiveness ratio of $25,500 per quality-adjusted life year (QALY) gained. When HIV transmission is included, the cost-effectiveness ratio is much lower: $7400 and $8700 per QALY gained in the moderate- and high-prevalence populations, respectively. When the intervention is twice as costly per counseling session and half as effective as estimated in the base case (in terms of the number of individuals who become highly adherent, and who remain highly adherent), then the intervention costs $17,100 and $19,600 per QALY gained in the 2 populations, respectively. CONCLUSIONS Counseling to improve adherence to HAART increased length of life, modestly reduced HIV transmission, and cost substantially less than $50,000 per QALY gained over a wide range of assumptions but did not reduce the proportion of drug-resistant strains. Such counseling provides only modest benefit as a tool for HIV prevention but can provide significant benefit for individual patients at an affordable cost.
Collapse
Affiliation(s)
- Gregory S Zaric
- Ivey School of Business, University of Western Ontario, London, Ontario, Canada.
| | | | | | | |
Collapse
|
28
|
Glintborg B, Hillestrøm PR, Olsen LH, Dalhoff KP, Poulsen HE. Are patients reliable when self-reporting medication use? Validation of structured drug interviews and home visits by drug analysis and prescription data in acutely hospitalized patients. J Clin Pharmacol 2008; 47:1440-9. [PMID: 17962430 DOI: 10.1177/0091270007307243] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
The medication history among hospitalized patients often relies on patients' self-reports due to insufficient communication between health care professionals. The aim of the present study was to estimate the reliability of patients' self-reported medication use. Five hundred patients admitted to an acute medical department at a Danish university hospital were interviewed on the day of admission about their recent medication use. Blood samples drawn immediately after admission were screened for contents of 5 drugs (digoxin, bendroflumethiazide, amlodipine, simvastatin, glimepiride), and the results were compared to the patients' self-reported medication history. Information on prescribed drugs dispensed from any Danish pharmacy was collected from nationwide real-time pharmacy records. The authors performed home visits in a subgroup of 115 patients 4 weeks after their discharge. Stored drugs were inspected, and patients were interviewed about their drug use. Additional blood samples were drawn for drug analysis. The median age of included patients was 72 years, and 298 patients (60%) were women. Patients reported use of 3 (median) prescription-only medications (range, 0-14) during the structured interview. The congruence between self-report and drug analysis was high for all 5 drugs measured (all kappa >0.8). However, 9 patients (2%) reported use of drugs that were not detected in their blood samples. In 29 patients (6%), the blood samples contained drugs not reported during the structured interview, but 14 of these drugs were registered in either hospital files or pharmacy records. Overall, the sensitivity of information from hospital files, structured interviews, and pharmacy records in identifying drug users was 87% to 93%, with no significant differences between methods. In conclusion, patients' self-reports are reliable when estimating recent use of cardiovascular and antidiabetic drugs.
Collapse
Affiliation(s)
- Bente Glintborg
- Department of Clinical Pharmacology Q7642, Rigshospitalet, Blegdamsvej 9, DK-2100 Copenhagen, Denmark.
| | | | | | | | | |
Collapse
|
29
|
Herrmann S, McKinnon E, John M, Hyland N, Martinez OP, Cain A, Turner K, Coombs A, Manolikos C, Mallal S. Evidence-based, multifactorial approach to addressing non-adherence to antiretroviral therapy and improving standards of care. Intern Med J 2007; 38:8-15. [PMID: 17916167 DOI: 10.1111/j.1445-5994.2007.01477.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
BACKGROUND Near-perfect adherence to antiretroviral therapy over time is critical to achieve viral suppression and recovery of functional immunity in individuals infected with HIV. The concept of adherence as a dynamic behaviour influenced by multiple biopsychosocial factors motivated us to implement an integrated, multifactorial programme in our hospital-based setting. The aims of this study were to survey the scope and determinants of non-adherence in patients attending the Ambulatory HIV Service at Royal Perth Hospital, to develop a method for longitudinal monitoring and to implement measures tailored to support individuals. METHODS The US Adult AIDS Clinical Trials Group self-report baseline adherence, follow-up and side-effect questionnaires were used to survey 247 patients at two time-points between September 2002 and February 2003. A longitudinal monitoring method was developed and the WA HIV Cohort Study database used to collate results with clinical markers up to December 2005. RESULTS Adherence was associated with viral suppression and CD4 T-cell recovery and improved over the 3-year period under observation (all P < 0.001). Diminishing adherence was associated with younger age (P = 0.002), substance use (P < 0.01), perceived stress (P = 0.04) and indicators of depression (P = 0.03). The analyses showed relationships between personal experience of side-effects and the depression indicator scale in patients on antiretroviral therapy. CONCLUSION The programme resulted in an improvement in adherence in our cohort even after adjusting for pill burden, dosing frequency and highly active antiretroviral therapy regimen and has enhanced focus on patients vulnerable to non-adherence while supporting those not currently at risk.
Collapse
Affiliation(s)
- S Herrmann
- Centre for Clinical Immunology and Biomedical Statistics, Royal Perth Hospital and Murdoch University, Perth, WA, Australia
| | | | | | | | | | | | | | | | | | | |
Collapse
|
30
|
González MJC, Valín LO, Pérez-Simón MDR, Fernández JLM, Leza MA, Sánchez VM. A Prospective Study of Adherence and Virologic Failure in HIV-Infected Patients: Role of a Single Determination of Plasma Levels of Antiretroviral Medications. ACTA ACUST UNITED AC 2007; 6:245-50. [PMID: 17873246 DOI: 10.1177/1545109707305444] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
This study explores the contribution of a single determination of plasma levels for measuring adherence by means of forecasting virologic failure. Adherence was measured by questionnaires, punctuality at appointments to withdraw drugs, and plasma levels. Virologic failure was considered when 2 detectable consecutive viral loads were observed in 2 consecutive determinations with at least 1 month between them. Univariant analysis, logistic regression, and receiver operating characteristic curves were carried out. In 29 cases, virologic failure was observed. The lowest incidence was found in patients considered adherent by plasma levels and highest in those who declared nonfulfillment. The combination of methods increased the association of the incidence of virologic failure with nonadherence. The use of questionnaires plus pharmacy information implies a gain in sensitivity and a slight loss of specificity. There is a high incidence of virologic failure in these patients and a strong link with their classification as nonadherent with methods such as questionnaires and pharmacy collection information. Plasma levels do not contribute much to the prediction of virologic failure.
Collapse
|
31
|
Koneru S, Shishov M, Ware A, Farhey Y, Mongey AB, Graham TB, Passo MH, Houk JL, Higgins GC, Brunner HI. Effectively measuring adherence to medications for systemic lupus erythematosus in a clinical setting. ACTA ACUST UNITED AC 2007; 57:1000-6. [PMID: 17665465 DOI: 10.1002/art.22898] [Citation(s) in RCA: 83] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
OBJECTIVE To assess the reliability and concurrent validity of the Medication Adherence Self-report Inventory (MASRI) when used in systemic lupus erythematosus (SLE), to investigate the predictive validity of the MASRI using pharmacy refill information as the criterion standard, and to propose a sensible approach to the screening for nonadherence in a clinical setting. METHODS Adherence to 2 medications (hydroxychloroquine and prednisone) was measured in 55 patients using the MASRI, pill counts, and physician ratings (MD scale). Adherence based on pharmacy refill information served as a criterion standard with nonadherence defined as adherence rates <80%. To determine test-rest reliability of the MASRI, 20 patients completed the measure twice within a 2-week period. RESULTS Using pharmacy information, 39% of the patients were nonadherent to prednisone and 51% to hydroxychloroquine. The MASRI had acceptable internal consistency (Cronbach's alpha 0.7) and good reliability. Irrespective of the drug assessed, MASRI ratings were moderately correlated with patient adherence (pharmacy), supporting the concurrent validity of the MASRI. The combination of adherence estimation by MD scale rating at <85% and by MASRI at <90% was 87% sensitive and 86% specific for identifying patients who were nonadherent to prednisone. These cutoff values also appeared suitable for identifying nonadherence to hydroxychloroquine. CONCLUSION The MASRI is a reliable measure of adherence to medications in SLE. The measure has concurrent and predictive validity. When combined with the MD scale, the MASRI appears to be a useful screening tool for nonadherence in patients with SLE that could be suitable for clinical practice.
Collapse
Affiliation(s)
- Sri Koneru
- University of Cincinnati Medical Center, Cincinnati, Ohio, USA
| | | | | | | | | | | | | | | | | | | |
Collapse
|
32
|
Pearson CR, Simoni JM, Hoff P, Kurth AE, Martin DP. Assessing antiretroviral adherence via electronic drug monitoring and self-report: an examination of key methodological issues. AIDS Behav 2007; 11:161-73. [PMID: 16804749 PMCID: PMC5096443 DOI: 10.1007/s10461-006-9133-3] [Citation(s) in RCA: 112] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
We explored methodological issues related to antiretroviral adherence assessment, using 6 months of data collected in a completed intervention trial involving 136 low-income HIV-positive outpatients in the Bronx, NY. Findings suggest that operationalizing adherence as a continuous (versus dichotomous) variable and averaging adherence estimates over multiple assessment points (versus using only one) explains greater variance in HIV-1 RNA viral load (VL). Self-reported estimates provided during a phone interview accounted for similar variance in VL as EDM estimates (R (2) = .17 phone versus .18 EDM). Self-reported adherence was not associated with a standard social desirability measure, and no difference in the accuracy of self-report adherence was observed for assessment periods of 1-3 days. Self-reported poor adherence was more closely associated with EDM adherence estimates than self-reported moderate and high adherence. On average across assessment points, fewer than 4% of participants who reported taking a dose of an incorrect amount of medication.
Collapse
Affiliation(s)
- Cynthia R Pearson
- Department of Health Services, School of Public Health and Community Medicine, University of Washington, Seattle, WA 98105-1525, USA.
| | | | | | | | | |
Collapse
|
33
|
Barałkiewicz G, Juszczyk J. Changes of erythrocytes corpuscular volume in HIV-infected patients on antiretroviral therapy. HIV & AIDS REVIEW 2007. [DOI: 10.1016/s1730-1270(10)60075-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
|
34
|
Garcia R, Badaró R, Netto EM, Silva M, Amorin FS, Ramos A, Vaida F, Brites C, Schooley RT. Cross-sectional study to evaluate factors associated with adherence to antiretroviral therapy by Brazilian HIV-infected patients. AIDS Res Hum Retroviruses 2006; 22:1248-52. [PMID: 17209767 DOI: 10.1089/aid.2006.22.1248] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Antiretroviral therapy success is highly dependent on the ability of the patient to fully adhere to the prescribed treatment regimen. We present the results of a cross-sectional study that evaluates the predictive value of a self-administered questionnaire of adherence to antiretroviral (ARV) therapy. Study participants were interviewed using a 36-item Patient Medication Adherence Questionnaire (PMAQ) designed to assess knowledge about ARV therapy, motivation to adhere to treatment, and behavioral skills. Plasma HIV-1 RNA levels were correlated with the results obtained from the PMAQ. Of the 182 study participants, 82 (45%) were receiving their initial ARV regimen. Of the remaining patients, 39 (21%) and 61 (34%) were on a second or additional ARV regimen, respectively. An undetectable viral load was documented in 47/62 (76%) patients on their first regimen who reported missing medication on less than 4 days in the last 3 months. The PMAQ had a higher predictive value of plasma viral suppression for patients in the initial regimen than for patients in salvage therapy. The overall predictive value of the PMAQ to identify adherence was 74%, and 59% for nonadherence, with an overall efficacy of 64%. Of the 74 patients (45%) who did not understand the concept of antiretroviral therapy, 80% were failing or had previously failed the ARV treatment. Of 35 patients with doubts about their HIV status or skeptical of the benefits of ARV therapy, 29 (84%) were nonadherent. Despite the positive predictive value of PMAQ in identifying adherence, self-reported adherence is not a sufficiently precise predictor of treatment success to substitute for viral load monitoring. On the other hand, the use of such an instrument to identify factors associated with nonadherence provides an excellent opportunity to apply early intervention designed to specifically address factors that might be contributing to the lack of adherence prior to regimen failure.
Collapse
|
35
|
Llabre MM, Weaver KE, Durán RE, Antoni MH, McPherson-Baker S, Schneiderman N. A measurement model of medication adherence to highly active antiretroviral therapy and its relation to viral load in HIV-positive adults. AIDS Patient Care STDS 2006; 20:701-11. [PMID: 17052140 DOI: 10.1089/apc.2006.20.701] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
This study compared a multiple method measurement model of highly active antiretroviral therapy (HAART) adherence with single-method models to determine optimal validity in predicting HIV viral load. Repeated measures of antiretroviral adherence were collected over a 15-month period using three different measurement methods: a self-report questionnaire, an adherence interview item, and electronic medication monitoring. The participants included HIV-positive men and women (n = 323) who were currently prescribed HAART. Single-factor models composed of multiple measurements over time were developed for each adherence method and HIV viral load. The three adherence methods were then combined in a second order factor measurement model. Structural equation modeling was used to test the models. Mean adherence, defined as percent of doses taken, was 92%, 90%, and 57% by self-report, interview, and electronic monitoring, respectively. Reliability of individual measurements of adherence was low. Four or seven assessments were needed to attain acceptable stability, depending on the method. The second-order factor model of adherence fit the data and explained 45% of the variability in HIV viral load. Models including only one method of assessing adherence explained between 20% and 24% of the variability. Models that included both self-report and electronic monitoring optimized predictive validity. Using at least two different methods of adherence measurement, each assessed at multiple times is recommended to derive reliable and valid measurement of medication adherence, which is predictive of biological outcomes such as HIV viral load.
Collapse
Affiliation(s)
- Maria M Llabre
- Department of Psychology, University of Miami, 5665 Ponce de Leon Boulevard, Coral Gables, Florida 33146, USA.
| | | | | | | | | | | |
Collapse
|
36
|
Carrieri MP, Leport C, Protopopescu C, Cassuto JP, Bouvet E, Peyramond D, Raffi F, Moatti JP, Chêne G, Spire B. Factors associated with nonadherence to highly active antiretroviral therapy: a 5-year follow-up analysis with correction for the bias induced by missing data in the treatment maintenance phase. J Acquir Immune Defic Syndr 2006; 41:477-85. [PMID: 16652057 DOI: 10.1097/01.qai.0000186364.27587.0e] [Citation(s) in RCA: 90] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
This study aimed to identify factors associated with nonadherence during the maintenance phase of highly active antiretroviral therapy (months 12-60) in the Anti PROtease Cohort (APROCO) cohort after correcting for the bias due to missing outcome data. A Heckman 2-stage approach (generalized estimating equations probit model) was used to compare visits with moderate or poor adherence and visits with high adherence. Between months 12 and 60, at least 1 self-reported adherence measure was available for 970 of the 1110 patients with at least 12 months of follow-up (3889 visits with adherence assessments). Adherence was rated as high at 2466 visits, moderate at 1125, and poor at 298. After adjustment for "missingness," moderate and poor adherence were independently associated with age (younger), perceived treatment side effects, dosing frequency different from twice daily, and a protease inhibitor-based regimen. They were also associated with depression and lack of support from the main partner. High adherence was most likely among patients born outside the European Union. A comparison restricted to poor-adherence and high-adherence visits yielded a similar pattern of predictors. Adjusting for missing outcome data changed the predictor set. Reasons for nonadherence are multifactorial. Psychosocial interventions and the selection of the best-tolerated regimens are needed to improve long-term adherence of HIV-infected patients to their lifelong treatment.
Collapse
|
37
|
Simoni JM, Kurth AE, Pearson CR, Pantalone DW, Merrill JO, Frick PA. Self-report measures of antiretroviral therapy adherence: A review with recommendations for HIV research and clinical management. AIDS Behav 2006; 10:227-45. [PMID: 16783535 PMCID: PMC4083461 DOI: 10.1007/s10461-006-9078-6] [Citation(s) in RCA: 522] [Impact Index Per Article: 29.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A review of 77 studies employing self-report measures of antiretroviral adherence published 1/1996 through 8/2004 revealed great variety in adherence assessment item content, format, and response options. Recall periods ranged from 2 to 365 days (mode = 7 days). The most common cutoff for optimal adherence was 100% (21/48 studies, or 44%). In 27 of 34 recall periods (79%), self-reported adherence was associated with adherence as assessed with other indirect measures. Data from 57 of 67 recall periods (84%) indicated self-reported adherence was significantly associated with HIV-1 RNA viral load; in 16 of 26 (62%), it was associated with CD4 count. Clearly, the field would benefit from item standardization and a priori definitions and operationalizations of adherence. We conclude that even brief self-report measures of antiretroviral adherence can be robust, and recommend items and strategies for HIV research and clinical management.
Collapse
Affiliation(s)
- Jane M Simoni
- Department of Psychology, University of Washington, Seattle, Washington, 98195-1525, Box 351525, USA.
| | | | | | | | | | | |
Collapse
|
38
|
Demas PA, Thea DM, Weedon J, McWayne J, Bamji M, Lambert G, Schoenbaum EE. Adherence to zidovudine for the prevention of perinatal transmission in HIV-infected pregnant women: the impact of social network factors, side effects, and perceived treatment efficacy. Women Health 2006; 42:99-115. [PMID: 16418124 PMCID: PMC4561172 DOI: 10.1300/j013v42n01_06] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Adherence to zidovudine (ZDV) prophylaxis among 78 pregnant HIV-infected women was measured with 2 physiologic markers. Long-term adherence was measured with blood assays for macrocytosis, a clinical indicator of ZDV use; 53 women (67.9%) were adherent. Short-term adherence was measured with urine assays for ZDV; 48 women (61.5%) were adherent. Comparison of urine assay and interview data indicated that 29% had not taken the last dose that they reported. Participation in HIV support groups and disclosure to the participant's mother were associated with better adherence. These social network factors may enable HIV-infected pregnant women to cope more effectively with the multiple stressors they face and facilitate prenatal care.
Collapse
Affiliation(s)
- Penelope A Demas
- AIDS Research Program, Montefiore Medical Center, 111 East 210 Street, Bronx, NY 10467, USA.
| | | | | | | | | | | | | |
Collapse
|
39
|
Hoefnagel JGM, Koopmans PP, Burger DM, Schuurman R, Galama JMD. Role of the Inhibitory Quotient in HIV Therapy. Antivir Ther 2005. [DOI: 10.1177/135965350501000802] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
A systemic review is presented of all studies that have evaluated the inhibitory quotient (IQ). The IQ is defined as the ratio between (trough) drug concentration and level of drug resistance of the HIV isolate. From the studies presented, it can be concluded that for protease inhibitors (PIs) and efavirenz, the phenotypic IQ is associated with virological response. The genotypic IQ (GIQ) for PIs was also demonstrated to be associated with virological response. An intrinsic limitation of the GIQ is that it is only applicable for PIs, of which resistance is based on the cumulative effect of mutations. As the IQ can be modified by adjustment of the drug dosage, it may be of clinical value. Its application in patient care should therefore be further investigated.
Collapse
Affiliation(s)
- Jolanda GM Hoefnagel
- Department of Medical Microbiology, Radboud University Nijmegen Medical Centre, the Netherlands
- Nijmegen University Centre for Infectious diseases (NUCI), The Netherlands
| | - Peter P Koopmans
- Nijmegen University Centre for Infectious diseases (NUCI), The Netherlands
- Department of General Internal Medicine, Radboud University Nijmegen Medical Centre, The Netherlands
| | - David M Burger
- Nijmegen University Centre for Infectious diseases (NUCI), The Netherlands
- Department of Clinical Pharmacy, Radboud University Nijmegen Medical Centre, The Netherlands
| | - Rob Schuurman
- Department of Virology, University Medical Centre Utrecht, The Netherlands
| | - Jochem MD Galama
- Department of Medical Microbiology, Radboud University Nijmegen Medical Centre, the Netherlands
- Nijmegen University Centre for Infectious diseases (NUCI), The Netherlands
| |
Collapse
|
40
|
Petersen K, Riddle MS, Jones LE, Furtek KJ, Christensen AR, Tasker SA, Hale BR. Use of bilirubin as a marker of adherence to atazanavir-based antiretroviral therapy. AIDS 2005; 19:1700-2. [PMID: 16184044 DOI: 10.1097/01.aids.0000186826.60983.85] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
We retrospectively reviewed 134 patients to evaluate atazanavir-related bilirubin elevation as an adherence marker. Using a 2 log reduction or undetectable viral load as a marker for suppression, the median bilirubin increase at first follow-up was 1.3 (0.7-2.2), versus 0.2 (-0.05-0.65) for those not suppressed. An increase in bilirubin of more than 0.4 mg/dl correctly classified 81% of patients as having successful treatment response (sensitivity 87%, specificity 63%), suggesting that bilirubin is a good adherence marker.
Collapse
|
41
|
Ribera E, Fernando López-Cortés L, Soriano V, Luis Casado J, Mallolas J. Therapeutic drug monitoring and the inhibitory quotient of antiretroviral drugs: can they be applied to the current situation? Enferm Infecc Microbiol Clin 2005. [DOI: 10.1016/s0213-005x(05)75161-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
42
|
Ribera E, Fernando López-Cortés L, Soriano V, Luis Casado J, Mallolas J. Monitorización terapéutica y cociente inhibitorio de los fármacos antirretrovirales: ¿son aplicables a nuestra realidad? Enferm Infecc Microbiol Clin 2005. [DOI: 10.1016/s0213-005x(05)75160-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
43
|
Knobel H, Escobar I, Polo R, Ortega L, Martín-Conde MT, Casado JL, Codina C, Fernández J, Galindo MJ, Ibarra O, Llinas M, Miralles C, Riera M, Fumaz CR, Segador A, Segura F, Chamorro L. Recomendaciones GESIDA/SEFH/PNS para mejorar la adherencia al tratamiento antirretroviral en el año 2004. Enferm Infecc Microbiol Clin 2005; 23:221-31. [PMID: 15826548 DOI: 10.1157/13073149] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Since the early days of antiretroviral therapy, adherence has emerged as the milestone of success; in fact, it is the most potent predictor of effectiveness. The main factors related to adherence include the complexity of the therapeutic regimen, adverse effects, psychological problems, alcoholism and active addiction to drugs, lack of social and family support and the patient's beliefs and attitudes about the treatment. Adherence monitoring should be part of the HIV patient's regular care, and should be done with feasible, easily applied methods adapted to the different clinical settings. The minimally acceptable measures should include use of a validated questionnaire, together with data from the Pharmacy Department's drug dispensation registry. All patients that begin HAART or undergo a change of treatment should participate in a treatment education program imparted by health professionals with knowledge and experience in the management of patients with HIV infection. The health team (doctors, pharmacists and nursing professionals) should offer maximum availability to solve the doubts and problems that may occur during treatment. When sub-optimal adherence is detected, intervention strategies based on psychological therapy, educational efforts and personal advice should be attempted, in order to adapt the treatment scheme to the patient's habits and provide solutions to the problem of non-compliance. In certain situations, co-morbid conditions will also require attention. Treatment adherence, being a multidimensional problem, needs a multidisciplinary team approach. The choice of therapy, only one aspect of the multidimensional problem of adherence, must be a careful and individualized decision; however, simpler regimens with regard to the number of pills and daily dose are desirable.
Collapse
Affiliation(s)
- Hernando Knobel
- Servicio Medicina Interna, Hospital del Mar, Barcelona, Spain.
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
44
|
|
45
|
Duval X, Mentré F, Lamotte C, Chêne G, Spire B, Dellamonica P, Panhard X, Salmon D, Raffi F, Peytavin G, Leport C. Indinavir Plasma Concentration and Adherence Score Are Codeterminant of Early Virologic Response in HIV-Infected Patients of the APROCO Cohort. Ther Drug Monit 2005; 27:63-70. [PMID: 15665749 DOI: 10.1097/00007691-200502000-00013] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
To study the respective roles of indinavir concentrations and treatment adherence as predictors of early virologic response, we analyzed the patients of the APROCO cohort treated by indinavir 800 mg TID during the first 4 months. Minimum (Cmin), maximum (Cmax), and the ratio of the measured to expected concentrations (CR) were estimated for each patient at M4, from a population pharmacokinetic analysis of all data. The relationship among virologic success at M4 [plasma HIV RNA (VL) <500 copies/mL], baseline characteristics, estimated indinavir concentrations, and adherence score measured by a self-administered questionnaire, was analyzed by multivariate logistic regression. In the 216 studied patients, baseline median HIV RNA was 4.4 log10 copies/mL, and CD4 cell count was 309/mm. Virologic success was achieved in 195 (90%) patients; it was independently related to baseline viral load (OR = 0.524, CI 0.29-0.93; P = 0.03), antiretroviral treatment naive status (OR = 3.89, CI 1.29-11.76; P = 0.01), and indinavir Cmin (OR = 1.06, CI 1.02-1.10; P = 0.004) when adherence score was not included in the model, whereas full adherence was the only independent related factor when included in the model (OR = 8.8, 95% CI 2.85-27.3; P < 10). In the 168 fully adherent patients, virologic success was more frequent in patients with shorter duration of antiretrovirals at baseline (P = 0.03), lower baseline HIV RNA (P = 0.03), and higher indinavir CR (P < 10); the most discriminating Cmin cut-off was 194 ng/mL. Data on the relationship between indinavir plasma concentration and virologic success are therefore misleading without a concomitant assessment of adherence. These data suggest that any strategy of therapeutic drug monitoring must imply first a combined evaluation of plasma concentrations and adherence level and second an intervention target based on the results of both assessments.
Collapse
Affiliation(s)
- Xavier Duval
- Laboratoire de Recherche en Pathologie Infectieuse, Faculté Xavier Bichat, Paris, France.
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
46
|
Murri R, Ammassari A, Trotta MP, De Luca A, Melzi S, Minardi C, Zaccarelli M, Rellecati P, Santopadre P, Soscia F, Scasso A, Tozzi V, Ciardi M, Orofino GC, Noto P, Monforte AD, Antinori A, Wu AW. Patient-reported and physician-estimated adherence to HAART: social and clinic center-related factors are associated with discordance. J Gen Intern Med 2004; 19:1104-10. [PMID: 15566439 PMCID: PMC1494787 DOI: 10.1111/j.1525-1497.2004.30248.x] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
OBJECTIVES To evaluate the rate of discordance between patients and physicians on adherence to highly active antiretroviral therapy (HAART) and identify factors related to discordance in these two assessments. DESIGN Prospective, multicenter, cohort study (AdICONA) nested within the Italian Cohort Naive Antiretrovirals (ICONA) study. SETTING Tertiary clinical centers. PARTICIPANTS The patients filled out a 16-item self-administered questionnaire on adherence to HAART. At the same time, physicians estimated the current HAART adherence of their patient. MAIN OUTCOME MEASURE Discordance between patient and physician on adherence to antiretroviral therapy. RESULTS From May 1999 to March 2000, 320 paired patient-physician assessments were obtained. Patients had a mean plasma HIV RNA of 315 copies/ml (64% had undetectable HIV RNA) and a mean CD4+ cell count of 577 cells x 10(6)/L. Nonadherence was reported by 30.9% of patients and estimated by physicians in 45.0% cases. In 111 cases (34.7%), patients and physicians were discordant on adherence to HAART. Kappa statistics was 0.27. Using patient-assessed adherence as reference, sensitivity, specificity, positive predictive value, and negative predictive value of physician-estimated adherence were 64.7%, 66.6%, 81.2%, and 45.8%, respectively. On multivariable analysis, low education level, unemployment, absence of a social worker in the clinical center, and unavailability of afternoon visits were significantly correlated with patient-physician discordance on adherence to antiretrovirals. CONCLUSIONS Physicians did not correctly estimate patient-reported adherence to HAART in more than one third of patients. Both social variables and factors related to the clinical center were important predictors of discordance between patients and physicians. Interventions to enhance adherence should include strategies addressed to improve patient-physician relationship.
Collapse
Affiliation(s)
- Rita Murri
- Clinica delle Malattie Infettive, Università Cattolica del S. Cuore, 00168 Rome, Italy.
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
47
|
Carballo E, Cadarso-Suárez C, Carrera I, Fraga J, de la Fuente J, Ocampo A, Ojea R, Prieto A. Assessing relationships between health-related quality of life and adherence to antiretroviral therapy. Qual Life Res 2004; 13:587-99. [PMID: 15130023 DOI: 10.1023/b:qure.0000021315.93360.8b] [Citation(s) in RCA: 63] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE To investigate associations between health-related quality of life (HRQoL), as assessed using the multidimensional quality of life-HIV (MQOL-HIV) questionnaire, and adherence to antiretroviral treatment in HIV-infected subjects. DESIGN Multicentre cross-sectional study in three institutional tertiary hospitals in northwest Spain. PATIENTS AND METHODS The MQOL-HIV was completed by 235 HIV-infected adults undergoing antiretroviral treatment. Adherence to antiretroviral therapy was assessed by using patient's self-report. Information about sociodemographic characteristics and clinical variables was also collected. RESULTS Good adherence (> or = 95% of prescribed pills correctly taken) was reported by 131 patients (55.7%). Univariate analyses indicated that the sociodemographic and clinical variables associated with adherence were age, educational level, income, employment, home stability, transmission route, history of previous antiretroviral therapy, and number of prescribed pills/day. Subscales of MQOL-HIV associated with adherence were mental health, cognitive functioning, financial status, medical care, partner intimacy, and (in men only) sexual functioning. Stepwise logistic regression showed that good adherence was more frequent in patients aged > 40 years (odds ratio, OR: 2.50; 95% confidence interval, CI: 1.15-5.61) and in patients with high cognitive functioning (OR: 2.26; 95% CI: 1.19-4.30). Conversely, poor adherence was more frequent in patients without stable home (OR: 2.96; 95% CI: 1.39-6.32), in patients required to take 14 or more pills/day (OR: 2.17; 95% CI: 1.18-4.28), in patients with low financial status (OR: 3.42; 95% CI: 1.57-7.45), and in patients reporting low medical care (OR: 2.07; 95% CI: 1.07-3.98). CONCLUSIONS HRQoL dimensions, notably cognitive functioning, financial status and medical care, are closely associated with antiretroviral therapy adherence.
Collapse
Affiliation(s)
- E Carballo
- Department of Internal Medicine, Hospital Clínico Universitario, Santiago de Compostela, Spain
| | | | | | | | | | | | | | | |
Collapse
|
48
|
Ortega L, Cuevas MJ, Pérez-Simón R, Villares C, Alcoba M, Martín V. Factores predictores de carga viral detectable en pacientes en tratamiento antirretroviral de gran actividad. Med Clin (Barc) 2004; 123:45-9. [PMID: 15225482 DOI: 10.1016/s0025-7753(04)74407-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
BACKGROUND AND OBJECTIVE Knowledge of the variables predicting detectable viral load in patients with highly active antiretroviral treatment. PATIENTS AND METHOD Observational and cross-sectional study in patients with antiretroviral treatment receiving two nucleoside reverse transcriptase inhibitors and one protease inhibitor. Several sociodemographic and clinic variables were registered. Two models were designed in order to assess the adherence: I. combining self-report and pharmacy criteria, and II. including drug plasma levels in adherent patients with the two former criteria and detectable viral load. Logistic regression analysis with variables found to be associated with detectable viral load in the univariate analysis, diagnostic algorithm and ROC statistics were performed in order to select the best model to predict detectable viral load. RESULTS Among of 136 patients studied, 39 (28.7%) had detectable viral load. Patients less than 35 years old (OR = 2.68), intravenous drug users or heterosexual contacts as the way of HIV infection (OR = 6.42), patients not fully convinced of the capacity of mutation of the HIV by poor adherence (OR = 3.25) and patients considered non-adherent according to the drug plasma levels criteria (OR = 6.91) had more frequently detectable viral load. The best model to predict detectable viral load would include patients considered non-adherent according to the two models used, and moreover, patients where another of the factors of risk were detected; the prevalence of detectable viral load in these was of 10% versus 43%. CONCLUSION Adherence to HAART is a key factor to predict detectable viral load, specially in young patients, infected by intravenous drug use or heterosexual contacts, and patients not convinced of the importance of the adherence.
Collapse
Affiliation(s)
- Luis Ortega
- Servicio de Farmacia, Hospital de León, León, Spain
| | | | | | | | | | | |
Collapse
|
49
|
Heckman BD, Catz SL, Heckman TG, Miller JG, Kalichman SC. Adherence to antiretroviral therapy in rural persons living with HIV disease in the United States. AIDS Care 2004; 16:219-30. [PMID: 14676027 DOI: 10.1080/09540120410001641066] [Citation(s) in RCA: 69] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
The current study delineated patterns and predictors of adherence to antiretroviral therapy in 329 persons living with HIV disease in rural areas of 12 US states. Participants provided self-report data on patterns of HIV medication adherence, reasons for missing medication doses, psychological symptomatology, life-stressor burden, social support, ways of coping, coping self-efficacy, the quality of their relationship with their main physician, and barriers to health care and social services. Based on adherence data collected via retrospective, self-report assessment instruments, only 50% of participants adhered consistently to antiretroviral therapy regimens in the past week. Consistent adherence was more common in White participants, persons who had progressed to AIDS, and 'native infections' (i.e. persons who were born, raised, and infected in their current place of residence). Logistic regression analyses indicated that consistent adherence was reported by persons who drank less alcohol, had a good relationship with their main physician, and engaged in more active coping in response to HIV-related life stressors. As the number of rural persons living with HIV disease continues to increase, research that identifies correlates of non-adherence and conceptualizes approaches to optimize adherence in this group is urgently needed.
Collapse
Affiliation(s)
- B D Heckman
- Department of Psychology, Ohio University, Athens, 45701, USA.
| | | | | | | | | |
Collapse
|
50
|
Carrieri MP, Raffi F, Lewden C, Sobel A, Michelet C, Cailleton V, Chêne G, Leport C, Moatti JP, Spire B. Impact of early versus late adherence to highly active antiretroviral therapy on immuno-virological response: a 3-year follow-up study. Antivir Ther 2003; 8:585-94. [PMID: 14760892 DOI: 10.1177/135965350300800606] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
OBJECTIVE To assess the impact of different patterns of adherence to highly active antiretroviral therapy (HAART), in particular, the relative impact of early and late adherence, on long-term immuno-virological response in HIV-infected individuals started on a protease inhibitor-containing regimen. DESIGN Clinical, immuno-virological and self-reported adherence data were collected at 4 (M4), 12 (M12), 20 (M20), 28 (M28) and 36 (M36) months after HAART initiation in the French APROCO cohort. METHODS A standardized self-administered questionnaire classified patients as non-adherent, moderately or highly adherent at each visit. Stable viral suppression at both M28 to M36, and a CD4 cell increase > 200 between M0 and M36 were used as outcome measures. RESULTS Of the 582 patients followed regularly through M36, 360 patients had complete adherence data. Although 59.2% were highly adherent at M4, only 25.8% maintained consistent high adherence throughout the follow-up. High adherence at M4 was independently associated with both stable viral suppression at M28-M36 [OR (95% CI): 2.8 (1.4-5.5)] and a CD4 cell increase > 200 during the same period [OR (95% CI): 3.9 (1.7-9.7)]. However, 'moderately adherent' patients between M12 and M36 had the same likelihood [OR (95% CI): 1.9 (1.1-3.2)] as patients who were always high adherent [OR (95% CI): 1.9 (1.1-3.2)] of achieving stable viral load suppression, relative to those who reported non-adherence episodes. CONCLUSION Optimizing adherence in the early months of treatment is crucial to ensure long-term immuno-virological high adherence during follow-up have a less negative impact. Priority should be given to interventions aimed to improve adherence in the early months of HAART.
Collapse
|