Anatomical Therapeutic Chemical Classification/Defined Daily Doses Research Articles

Analysis of the availability of bronchodilators and anti-inflammatory drugs for patients with chronic obstructive pulmonary disease

Background. The study of drug availability for patients with chronic obstructive pulmonary disease (COPD) represents one of the priority tasks in the organization of effective counteraction to COPD in the Russian Federation.Objective: to assess drug prices, affordability, and availability for COPD patients.Material and methods. The analysis of drug availability for COPD patients was carried out according to the methodology of the World Health Organization and Health Action International (WHO/HAI). Bronchodilator and anti-inflammatory therapy of originator brands and lowestpriced generics was evaluated. The consumption volume of the studied drugs was also analyzed using the ATC/DDD (Anatomical Therapeutic Chemical classification / defined daily dose) pharmacoepidemiologic methodology over a three-year period (from 2020 to 2022), taking into account their share of total DDD (drug utilization analysis, DU90%).Results. According to the results of DU90% analysis, the most purchased drugs for bronchodilator and anti-inflammatory therapy for all the years under study were drugs from the groups of short-acting bronchodilators (salbutamol, fenoterol, ipratropium bromide + fenoterol) and inhaled glucocorticoids (budesonide, beclomethasone). The obtained data were confirmed by the results of the physical availability study. Thus, the highest percentage of physical availability was for short-acting inhaled beta-2-agonists (SABA) (salbutamol). Analysis of drug affordability also revealed a tendential superiority of SABA and short-acting anticholinergics over baseline bronchodilators and antiinflammatory drugs.Conclusion. Low affordability of the main drugs of baseline therapy contributes to the burden of COPD and necessitates improvement of drug supply mechanisms for individuals, especially those with low material income, which in the long term will significantly reduce the costs of the healthcare system for the treatment of these patients by decreasing the severity and frequency of exacerbations.

The Status and Prescription Patterns of Opioid Utilization in a Large Comprehensive Teaching Hospital in China According to the Anatomical Therapeutic Chemical Classification/Defined Daily Dose Methodology.

BackgroundFew studies have analyzed opioid consumption and the average daily dose and duration for different patients in hospital settings in China. The aim of this study was to measure the status of and trends in prescribed opioids and the prescribing patterns at the Second Xiangya Hospital.MethodsThe data were obtained from the prescribed medicine database of the inpatient department. We included patients who were >18 years old and received any level of opioid analgesic between 2012 and 2017. The international Anatomical Therapeutic Chemical Classification/Defined Daily Dose (ATC/DDD) methodology was used to standardize the consumption rates. All opioid units were converted into morphine equivalents (MEs) to analyze the specific opioid usage.ResultsThe consumption of prescribed opioids increased from 3.16 to 3.74 DDD/100 bed-days (+18.3%) from 2012 to 2017. Both cancer and noncancer patients had similar administration routes and median daily dosages in MEs, but cancer patients had longer treatment durations (median: 5 days vs. 1 day, respectively). The median average daily dose and treatment duration for all patients were 15 MEs/day and 2 days, respectively, for oral administration, 100 MEs/day and 1 day for parenteral administration, and 47.14 MEs/day and 5 days for both oral and parenteral administration.ConclusionAlthough there was a tendency toward an increase in opioid consumption, the overall level of consumption in the Second Xiangya Hospital remained relatively low. Thus, it is urgently necessary to increase the availability of opioids and alter prescription habits for them in order adopt the current concept of pain management developed by the World Health Organization (WHO).

Analysis of the consumption volumes of antithrombotic drugs used for pharmacotherapy of atrial fibrillation in Saratov Region

Objective: To study the evolution of consumption of antithrombotic drugs used for the treatment of atrial fibrillation (AF) at the outpatient stage in the Saratov Region using the ATC/DDD (Anatomical Therapeutic Chemical Classification / Defined Daily Doses) and drug utilization 90% (DU90%) analysis.Material and methods. We analyzed the outpatient stage of treatment using the data reflected in 511 case histories of AF patients hospitalized in specialized cardiology departments of the Saratov Region in 2011–2018. The study of the consumption volumes of antithrombotic drugs was carried out using the ATC/DDD- and DU90%-analysis methodology. The consumption of drugs with proven efficacy in AF was expressed as the number of daily doses (NDDD) per 1000 AF patients per day.Results. In 2011, the number of prescribed DDD of oral anticoagulants (OACs) was 5.29 NDDD per 1000 AF patients per day, and all of them were represented by warfarin; in 2018, this indicator increased up to 277.51 NDDD per 1000 AF patients per day, of which direct OACs amounted to 237.06. The consumption of antiplatelet agents remained at a high level, and in 2018, was 582.53 NDDD per 1000 AF patients per day. Acetylsalicylic acid was included in the group of drugs accounting for 90% of all antithrombotic drugs at the outpatient stage – 99.02% in 2011, 93.08% in 2012, 58.55% in 2016, 60.27% in 2017, and 46.66% in 2018.Conclusion. The consumption volumes of OACs used at the outpatient stage of treatment of AF in the Saratov Region increased significantly in the period from 2011 to 2018, mainly due to direct OACs. At the same time, the consumption volumes of antiplatelet agents remained at a high level.

Application of the anatomical chemical system/defined daily doses: Challenges and way forward for resource-limited countries.

The Anatomical Therapeutic Chemical Classification/Defined Daily Doses (ATC/DDD) methodology is a WHO gold standard for ensuring systematic Drug Utilization Research (DUR) and has been mainly used in the developed world. This article examines the challenges and way forward for using this methodology in resource-limited countries. The ATC/DDD is superior over other methods employed in DUR as it offers a unified medicines regulation and management system at all care levels. The ATC/DDD allows access to standardized and validated information on DUR by: assessing patterns of utilization, defining optimal use levels, identification of gaps, aggregating and analysing statistics for reporting adverse drug reactions, as well as assisting in developing rational medicines use interventions and monitoring their outcomes. Application of the ATC/DDD methodology is crucial for improved patient management, optimal consumption of national pharmaceutical budgets and policy formulation in resource-limited countries.

A Novel Metric System to Quantify Antibiotic Consumption in Paediatric Population: A Hospital Based, Biphasic Pilot Study.

BACKGROUND: The Anatomical Therapeutic Chemical Classification / Defined Daily Dose (ATC/DDD) system recommended by World Health Organization is accepted worldwide as the standard method of quantification of drug consumption. However, owing to individual variation in body weight, the ATC/DDD system cannot be used for comparison across paediatric population. OBJECTIVE: This study aimed to develop a novel metric system for standard quantification of antibiotic consumption in paediatric population. METHOD: The standard unit of drug quantification in adult population is DDD/100 patient days (PD). We conceived a new unit of DDD/1000 kg-days (KD) where KD is the product of the body weight and length of hospital stay of an individual patient. We simulated the quantification and comparison of drugs in a computer model of five virtual paediatric hospitals (H1 to H5, n=100, 200, 100, 100, 100 respectively). We re-applied the metric system on two, real world, hospital-based, time cohorts (TC) (TC18, n=38 and TC19, n=47) of 2 weeks each, in two consecutive years. RESULTS: The body weights (mean±SD) in H1-H5 were 5.7±3.0, 5.7±2.8, 25.3±8.5, 20.6±11.7 and 19.8±11.4 kg, respectively. The antibiotic consumption in terms of DDD/100 PD and DDD/1000 KD in the five hospitals was 1.26, 1.20, 5.52, 4.41 and 2.00, and 2.24, 2.14, 2.22, 2.17 and 1.06 respectively. In TC18 and TC19, the mean body weight, DDD/100 PD and DDD/1000 KD were 12.24±13.17, 30.93, 20.34 and 19.51±12.28, 11.99, 6.23, respectively. CONCLUSION: DDD/1000 kg-days is a potential standard unit for drug quantification in paediatric population independent of weight distribution and size of the study sample. The universal application and comparison across diverse samples can generate useful information for resource allocation, anti-microbial stewardship, disease burden and drug use, and can help in taking policy decisions to improve healthcare delivery in the paediatric population.

Development and validation of a mathematical model to quantify antibiotic consumption in paediatric population: A hospital‐based pilot study

A standard drug classification system and a fundamental measurement unit of drug consumption are prerequisites in a healthcare information system for generating quality data on drug use. Globally, the ATC/DDD (Anatomical Therapeutic Chemical Classification/Defined Daily Dose) system recommended by WHO is accepted as the international standard. However, owing to variability in body weight, it cannot be used directly in paediatric population. In our work, we aimed to develop a standard method of quantification of antibiotic consumption in paediatric population using a modified approach of the ATC/DDD system. We developed a mathematical model in a simulated paediatric cohort (n=1000) and calculated antibiotic consumption in units of days of therapy (DOT) and DDD/100 patient days (PD). We validated the model in an observational cohort (n=38) of inpatients admitted in Paediatric Department of a tertiary care centre. Model simulation showed near perfect positive correlation (R=.99-1.00) between DOT and DDD/100 PD in discrete weight based sub-cohorts (weight 1-10kg). In the validation cohort, consumption of antibiotics was 121.76 and 33.16 in terms of DOT and DDD/100 PD respectively. Strong positive correlation between the two units (R=.73) was obtained. The correlation was better in predefined age and weight categories as compared to the uncategorised consumption (R=.78-.97). The model was proved validated when weight specific (in sub-cohorts of patients weighing 4, 5, 7kg) DDD/100 PD and DOT also showed near perfect positive correlation (R=.96-.99). Weight specific DDD/100 PD can be explored further as a tool to standardise the quantification and comparison of consumption of drugs in paediatric population.

Utilization of the Parenteral Morphine in Emergency Department using the Anatomical Therapeutic Chemical Classification/Defined Daily Doses (ATC/DDD) System.

Objective:To evaluate the utilization of the parenteral morphine in Emergency Department (ED) using the Anatomical Therapeutic Chemical Classification/Defined Daily Doses (ATC/DDD) system.Methods:In this retrospective cross-sectional study, morphine administration was recorded in 4-year time period from January 2013 to December 2016 in the ED of a referral center. The dose of the administered morphine was evaluated using the ATC/DDD system. The ATC/DDD of the parenteral morphine was calculated based on the world health organization (WHO). The data was evaluated based on the different diagnosis and conditions using the ATC/DDD protocol. Results:In this study, 500 patients referred to ED with mean age of 48.29 ± 10.10 years were included. There were 306 (61.2%) men and 194 (38.8%) women among the patients. The lowest and highest DDD of parenteral morphine were 0.1 and 0.43, respectively. The utilization of parenteral morphine was significantly higher in men when compared to women (p<0.001). Those with history of tricyclic anti-depressant (TCA) consumption (p<0.001) and opium addiction (p<0.001) had significantly higher parenteral morphine utilization. Those with pain in the extremities and chest pain had significantly higher parenteral morphine utilization (p<0.001).Conclusion:The utilization of parenteral morphine in the ED of our center was higher than the WHO standard dosage. The morphine utilization was associated with male gender, opium addiction and TCA consumption.

Tacrolimus Utilization and Expenditure in Serbia.

Increasing immunosuppressant consumption and expenditure is a quite a challenge in transplantation medicine. The aim of the study was to characterize the utilization and expenditure of tacrolimus, backbone, and standard of care in immunosuppression regimen in Serbian solid organ transplant recipients. This study was performed as retrospective cross-sectional study during a 3-year period (from 2013 to 2015) in Serbia. The Anatomical Therapeutic Chemical Classification/Defined Daily Doses (ATC/DDD) international system was used for consumption evaluation. Two hundred and sixty-nine patients were transplanted in Serbia from 2013 to 2015 (185 recipients from deceased donors and 84 recipients from living donors). Total number of deceased donors in this period was 81. The consumption of tacrolimus increased (from 0.051 DDD/1,000 inhabitants/day to 0.069 DDD/1,000 inhabitants/day in 2013 and 2015, respectively). The total cost of tacrolimus was also increased; from 1,206,816€ to 1,483,472€ in 2013 and 2015, respectively. On the other hand, the number of all new solid organ transplants (from deceased and living donors) per million population per year was decreased from 17.39 to 10.02, from 2013 to 2015, respectively. In spite downward trend in the number of solid organ transplants, tacrolimus consumption and expenditure in the examined 3-year period in Serbia increased. Since tacrolimus is a high-cost and life-preserving drug, its increasing utilization and expenditure will most likely continue consuming an enhancing share of Serbian pharmaceutical expenditure, as well as its health care, as a whole.

Drug utilization pattern of NSAIDs assessed with the anatomical therapeutic chemical classification/defined daily dose system in an orthopedic department

To study the drug utilization pattern of NSAIDs using the Anatomical Therapeutic Chemical classification/Defined Daily Dose (ATC/DDD) system in patients admitted to the orthopedic department of a tertiary-care teaching hospital. A cross-sectional prospective observational study was carried out in 200 patients from March to August 2014. Demographic information, disease related details, drug history and adverse drug reactions (ADRs) were recorded by personal interview and from case files daily for drug utilization analysis. The majority of patients were aged 18–30 years (30 %), most were male (80 %) and the most common orthopaedic condition causing hospitalization was fracture/dislocation (77 %). The most commonly prescribed drug group was analgesics, with NSAIDs being the most commonly prescribed type of analgesic (97 %). The majority of prescribed drugs were from the World Health Organization (WHO) Essential Medicine List (92 %) and Indian national essential drug list (100 %). Polypharmacy and high polypharmacy was reported in 71 and 14.5 % of patients respectively. No fixed-dose combinations of analgesics were used. Oral tablet diclofenac (M01AB05) 50 mg was the most frequently prescribed analgesic (97 % of patients; 840.5 DDD), followed by intravenous injection tramadol (N02AX02) in 56 % (189.3 DDD), intramuscular injection diclofenac (M01AB05) 75 mg in 55 % (87 DDD) and oral tablet paracetamol (N02BE01) 500 mg in 38.5 % (58.3 DDD) of patients. ADRs (mainly gastritis despite concomitant use of histamine H2 blockers) were reported in 4 % of patients; all ADRs were of ‘possible’ category according to the WHO–Uppsala Monitoring Centre causality assessment method. Fracture-dislocation and arthritis were the most common causes for hospitalization in the orthopedic department. Selection of analgesics and their dosage regimen complied with the WHO guidelines of pain management.

Distribution and trends in outpatient utilization of generic versus brand name psychopharmaceuticals during a ten-year period in Croatia.

BackgroundDrug costs increasingly pose a burden upon the otherwise inadequate health care resources and rational drug utilization is an important segment of every national health policy. Optimal patient care should be the goal of rational pharmacotherapy, whereby the economic burden of treatment is just one of the elements to be considered on choosing appropriate therapy.The aim of this study was to determine distribution and trends in the outpatient utilization of generic versus brand name psychopharmaceuticals and to evaluate the rationality of prescribing psychopharmaceuticals during a ten-year period.MethodsUsing the World Health Organization Anatomical-Therapeutic-Chemical classification/Defined Daily Doses (ATC/DDD) methodology, the number of DDD was calculated from data collected from pharmacies on the number and size of drug packages. The ratio of generic and brand name drug costs served as an indicator on assessing the rationality of drug utilization.ResultsTotal cost for psychopharmaceuticals increased by 20.1%, more for brand name than for generic agents (32.7% vs. 7.4%). The highest share of generic psychopharmaceuticals as compared with brand name drugs according to DDD per 1000 inhabitants per day (DDD/1000/day) was in the group of psycholeptics (83.6% in 2001 vs. 82.2% in 2010), most in hypnotics and sedatives, and least in antipsychotics. The share of generic psychopharmaceuticals in total drug utilization according to financial indicators decreased by 9.6% and according to DDD/1000/day by 12%. The greatest decrease was in antidepressants, i.e. by 33.8% according to financial indicators and by 46% according to DDD/1000/day; and in antipsychotics by 30.9% according to DDD/1000/day, while showing an increase by 8.5% according to financial indicators. In the therapeutic subgroup of mood stabilizers, the share of generic drugs in total drug utilization declined by 32% according to DDD/1000/day, but increased by 25.1% according to financial indicators.ConclusionsThe lack of uniform national guidelines and the still strong impact of pharmaceutical industry marketing continue favoring the rise in prescribing brand name antidepressants and antipsychotics. Depression, schizophrenia and bipolar diseases are complex diseases. As a result, specific measures are needed to encourage the prescribing of generic psychopharmaceuticals.

Assessment of perioperative antimicrobial prophylaxis using ATC/DDD methodology

In the light of international experience and guidelines and in order to improve the quality of perioperative antimicrobial prophylaxis (PAP), various hospitals have set up their own multidisciplinary healthcare teams and have evaluated the density of PAP through close supervision and interventions. The aim of the present study was to compare the density, quality, and cost of PAP before and after an intervention implemented at our hospital in order to increase the quality of PAP. PAP was monitored using a form prepared in line with the international guidelines, which was completed by the infection control nurse under the supervision of the infectious diseases specialist. In order to reduce the frequent errors in our PAP procedures, an intervention was implemented, and the period before this intervention (January-April 2011) was compared with the post-intervention period 1 year later (January-April 2012). The density of PAP was calculated according to the Anatomical Therapeutic Chemical classification/defined daily dose (ATC/DDD) methodology. A total of 2398 patients received PAP during this period. The most frequently used antibiotic before and after the intervention was cefazolin. Its use further increased after the intervention (p<0.001). After the intervention, the ratio of the correct timing of the first antibiotic dose increased from 91.7% to 99.0% (p<0.001), while the excessively long administration of PAP was reduced from 77.0% to 44.7% (p<0.001). The ratio of full compliance with the guidelines increased from 15.5% to 40.2% (p<0.001) and the rate of surgical site infections dropped from 18.5% to 12.0%. The density of antibiotic use dropped from 305.7 DDD/100 procedures=3.1 DDD/procedure to 162.1 DDD/100 procedures=1.6 DDD/procedure. The quality of PAP may be improved through better compliance with healthcare guidelines, close supervision, and training activities. Also, surgical site infections and the cost of PAP may be reduced through more appropriate antibiotic use, thus contributing to the national healthcare budget.

Antibiotic use in pulmonology wards of Chinese children’s hospitals: 2002-2006

To investigate the pattern of antibiotic use in the pulmonology wards of four children's hospitals in China from 2002 to 2006. The Anatomical Therapeutic Chemical Classification/Defined Daily Doses (ATC/DDD) methodology was used. Aggregate data on antibiotic use (ATC code-J01) were expressed in numbers of DDD/100 bed-days for inpatients. The overall consumption of antibiotic drugs in the pulmonology wards of the four children's hospitals were 83.7, 49.9, 53.6 and 79.3 DDD/100 bed-days, respectively. Injectables were among the most widely used antibiotics. In addition, there was a considerable variation in both the amount and the pattern of antibiotics used in the respective hospitals' pulmonology wards. Wide variations were found between the four hospitals studied in the amount and type of antibiotics prescribed although the diseases treated appeared the same. This variation may have been due to differences in disease severity, regional diversity in bacterial resistance or variations in empiric treatment regimens. Despite the introduction of Chinese Ministry of Health Antibiotic Guidelines in 2004, the pattern of antibiotic use in individual hospitals remained unchanged from 2002 to 2006. Antibiotic utilization studies need be taken to the next level; comparing drugs used to treat specific diseases with guideline recommendations. In addition, educational and other interventions to ensure better compliance with guidelines are urgently required.

Antibiotic use in five children's hospitals during 2002–2006: the impact of antibiotic guidelines issued by the Chinese Ministry of Health

To investigate the pattern of antibiotic use in five Chinese children's hospitals from 2002 to 2006. To see if the Guidelines to encourage rational use of antibiotics issued by the Ministry of Health in October 2004 have any impact on the use. The Anatomical Therapeutic Chemical Classification/Defined Daily Doses (ATC/DDD) methodology was used. Aggregate data on antibiotic use (ATC code-J01) were expressed in numbers of DDD/100 bed-days for inpatients. Total 56 different substances of systemic antibiotics were used. The overall consumption of antibiotic drugs was 68.2, 58.4, 65.8, 65.6 and 49.9 DDD/100 bed-days for the years 2002-2006, respectively. The top antibiotics used were third-generation cephalosporins. There was considerable variation in both type and amount of antibiotics used in the five hospitals. In 2002, some hospitals had twice the antibiotic use compared to others. While the overall antibiotic use in 2005 was largely unchanged compared with previous years, by 2006 antibiotic use had decreased by 22.6% and the variation in use between hospitals was also reduced. The ATC/DDD methodology proved useful for studying overall antibiotic usage in children's hospitals. The decline in antibiotic usage found in 2006 (and the reduced variation between hospitals) may be attributed to the impact of the Ministry of Health guidelines which took some time to be promulgated to individual staff members. Further research will focus on compliance of antibiotic use in these five hospitals with particular guideline recommendations for specific clinical problems such as bacterial resistance and surgical antibiotic prophylaxis.

Trends in consumption of opioid analgesics in Slovak Republic during 1998–2002

To describe the patterns of consumption in an opioid analgesic group in Slovakia between 1998 and 2002, to determine prescription habits, and to compare the results with those from selected countries. A drug utilization study using WHO methodology [Anatomical-Therapeutic-Chemical classification/defined daily doses (ATC/DDD)] was made. The wholesale data from the State Institute of Drug Control in the Slovak Republic and drug safety reports from the National Centre for Supervision of Adverse Drug Reaction were collected. Utilization was calculated as the DDDs per 1000 inhabitants per day. Consumption of opioid analgesics (ATC class N02AA-N02AX) in Slovakia was still growing during the study with dominance of tramadol. In comparison with other countries in 2001, consumption of morphine (as a representative of analyzed ATC class) in Slovakia (0.17 DDD/1000 inhabitants per day) is still very low, in contrast with Denmark, Austria or Canada (1.80, 1.61 and 1.58 DDD/1000 inhabitants per day, respectively). The collected safety reports contained only a few reported adverse reactions to the opioid analgesics. Despite recent increases, the consumption of opioid analgesics in the Slovak republic remains low. We have tried to present an overall picture of prescription of opioid analgesics in Slovakia and to focus attention on this topic.