Frequency and characteristics of hospital admissions associated with drug-related problems in paediatrics

The epidemiology of drug-related hospital admissions in paediatrics - a systematic review

BACKGROUND

Despite previous efforts, medication safety in paediatrics remains a major concern. To inform improvement strategies and further research especially in outpatient care, we systematically reviewed the literature on the frequency and nature of drug-related hospital admissions in children.

METHODS

Searches covered Embase, Medline, Web of Science, grey literature sources and relevant article citations. Studies reporting epidemiological data on paediatric drug-related hospital admissions published between 01/2000 and 01/2024 were eligible. Study identification, data extraction, and critical appraisal were conducted independently in duplicate using templates based on the 'Joanna Briggs Institute' recommendations.

RESULTS

The review included data from 45 studies reporting > 24,000 hospitalisations for adverse drug events (ADEs) or adverse drug reactions (ADRs). Due to different reference groups, a total of 52 relative frequency values were provided. We stratified these results by study characteristics. As a percentage of inpatients, the highest frequency of drug-related hospitalisation was found with 'intensive ADE monitoring', ranging from 3.1% to 5.8% (5 values), whereas with 'routine ADE monitoring', it ranged from 0.2% to 1.0% (3 values). The relative frequencies of 'ADR-related hospitalisations' ranged from 0.2% to 6.9% for 'intensive monitoring' (23 values) and from 0.04% to 3.8% for 'routine monitoring' (8 values). Per emergency department visits, five relative frequency values ranged from 0.1% to 3.8% in studies with 'intensive ADE monitoring', while all other eight values were ≤ 0.1%. Heterogeneity prevented pooled estimates. Studies rarely reported on the nature of the problems, or studies with broader objectives lacked disaggregated data. Limited data indicated that one in three (median) drug-related admissions could have been prevented, especially by more attentive prescribing. Besides polypharmacy and oncological therapy, no other risk factors could be clearly identified. Insufficient information and a high risk of bias, especially in retrospective and routine observational studies, hampered the assessment.

CONCLUSION

Given the high frequency of drug-related hospitalisations, medication safety in paediatrics needs to be further improved. As routine identification appears unreliable, clinical awareness needs to be raised. To gain more profound insights especially for generating improvement strategies, we have to address under-reporting and methodological issues in future research.

TRIAL REGISTRATION

PROSPERO (CRD42021296986).

Tripled likelihood: polypharmacy increases the occurrence of drug therapy problems in hospitalized pediatric patients

Background

A drug therapy problem (DTP) is any undesirable event experienced by a patient that accompanies drug therapy, prevents the patient from achieving their desired therapeutic goals, and requires expert judgment to resolve. Pediatric populations are at a higher risk of DTP than adults due to their immature organ systems, including the liver and kidneys, which play crucial roles in drug metabolism and excretion. Most previous studies have focused on only one element of DTP. Therefore, by considering all elements of DTP, we aimed to assess the prevalence of DTP and associated factors among pediatric patients admitted to the Wolaita Sodo University Comprehensive Specialized Hospital.

Methods

An institution-based cross-sectional study was conducted among pediatric patients admitted to Wolaita Sodo University Comprehensive Specialized Hospital from 8 July 2020, to 7 July 2021. A simple random sampling technique was employed to select study participants. Cipolle's and Strand's classification method of drug therapy problems was used to identify and categorize DTP. Data were obtained by reviewing the patient's medical records using a data abstraction checklist, entered into Epi data version 4.6, and exported to SPSS version 25 for analysis. Binary logistic regression analysis was performed to identify independent predictors of DTP.

Results

Medical records of 369 pediatric patients were reviewed, and the overall prevalence of DTP was 60.2% (95% CI:55.2%, 65.2%) with a total of 281 identified DTPs. Among them, 164 (74.2%) had only one DTP. Need additional drug therapy was the most common (140 [49.8%]) DTP identified. The number of disease conditions (AOR = 2.13, 95% CI:1.16, 3.92), polypharmacy (AOR = 3.01, 95% CI:1.70, 5.32), and duration of hospital stay (AOR = 1.80, 95% CI:1.04, 3.10) were independent predictors of DTP among admitted pediatric patients.

Conclusion

The prevalence of DTP in pediatric patients in the current setting was high. The number of disease conditions, polypharmacy, and duration of hospital stay were independent predictors of DTP. Enhancements to pharmaceutical care services, optimized dosage practices, improved deprescribing by clinicians, and efficient, comprehensive diagnostic procedures have the potential to significantly reduce specific drug therapy problems in hospitalized pediatrics.

Medication Errors in Pediatric Emergency Departments: A Systematic Review and Recommendations for Enhancing Medication Safety

OBJECTIVE

This systematic review aims to investigate the prevalence, preventability, and severity of medication errors in pediatric emergency departments (P-EDs). It also aims to identify common types of medication errors, implicated medications, risk factors, and evaluate the effectiveness of interventions in preventing these errors.

METHODS

A systematic review analyzed 6 primary studies with sample sizes ranging from 96 to 5000 pediatric patients in P-EDs. The review followed Preferred Reporting Items for Systematic Review and Meta-Analysis (PRISMA) guidelines and included observational studies and randomized controlled trials involving patients aged 18 years and younger. Comprehensive searches in biomedical databases were conducted, and conflicts in record screening were resolved by a third reviewer using systematic review software.

RESULTS

Medication errors in P-EDs are prevalent, ranging from 10% to 15%, with dosing errors being the most common, accounting for 39% to 49% of reported errors. These errors primarily stem from inaccurate weight estimations or dosage miscalculations. Inadequate dosing frequency and documentation also contribute significantly to medication errors. Commonly implicated medications include acetaminophen, analgesics, corticosteroids, antibiotics, bronchodilators, and intravenous fluids. Most errors are categorized as insignificant/mild (51.7% to 94.5%) or moderate (47.5%). Risk factors associated with medication errors in P-EDs include less experienced physicians, severely ill patients, and weekend/specific-hour ordering. Human factors such as noncompliance with procedures and communication failures further contribute to medication errors. Interventions such as health information technology solutions like ParentLink and electronic medical alert systems, as well as structured ordering systems, have shown promise in reducing these errors, although their effectiveness varies.

CONCLUSIONS

Overall, this systematic review provides valuable insights into the complexity of medication errors in the P-ED, emphasizes the need for targeted interventions, and offers recommendations to enhance medication safety and reduce preventable errors in this critical health care setting.

Drug-Related Problems of Children With Chronic Diseases in a Chinese Primary Health Care Institution: A Cross-Sectional Study

Introduction: Drug-related problems (DRPs) refer to events or circumstances involving drug therapy that actually or potentially interfere with desired health outcomes. DRPs might be severe for children with chronic diseases managed at primary health care institutions, but the relevant research is scarce.

Objective: In this cross-sectional study, we aimed to explore the prevalence, types, causes, and influencing factors of DRPs in children with chronic diseases in a Chinese primary health care institution.

Methods: We recruited children with chronic diseases who visited the pediatric outpatient department in a primary health care institution from July 1 to 12 October 2021. Clinical pharmacists identified DRPs through medication therapy reviews, classified the types and causes of DRPs, and distinguished the manifested DRPs that affected the outcome and potential DRPs that were going to affect the outcome.

Results: A total of 188 children with chronic diseases was included, and 584 DRPs were identified in 89.89% of participants. The most common type of DRPs was “treatment effectiveness” (a manifested problem or potential problem with the effect of the pharmacotherapy; 83.56%), of which 67.29% were potential DRPs. The second common type was “treatment safety” (patient suffers or could suffer from an adverse drug event; 14.21%), of which 89.16% were potential DRPs. The most common cause of DRPs was related to the process of use (42.24%), such as “patient uses/takes less drug than prescribed or does not take the drug at all,” “patient stores drug inappropriately,” and “patient administers/uses the drug in a wrong way.” The second common cause was related to the process of dispensing (29.83%), such as “necessary information not provided or incorrect advice provided” and “prescribed drug is not available.” The third common cause was related to the process of prescribing (26.21%), such as “drug dose is too low” and “no or incomplete drug treatment despite an existing indication.” The number of combined medications was an influencing factor for the frequency of DRPs (p < 0.05).

Conclusion: This cross-sectional study showed that the current situation regarding DRPs among children with chronic diseases managed in the primary health care institution was serious. The types of DRPs were mainly related to treatment effectiveness, and improper usage of medications was one of the main causes of DRPs. The number of combined drugs was the influencing factor for the frequency of DRPs. In the future, pharmacists should consider formulating pharmaceutical intervention strategies for this specific group according to the characteristics of DRPs.

Systematic review of the prevalence and nature of drug‐related problems in paediatric patients

What is known and objective

Methods

Results

What is new and conclusion

The Extent of Medication-Related Hospital Admissions in Australia: A Review from 1988 to 2021

Introduction

Medication-related problems often lead to patient harm. This paper aims to review the Australian literature to determine the overall incidence, severity and preventability of medication-related hospital admissions, as well as providing a national estimate on their extent and cost.

Methods

The first part of the paper includes a literature search to identify studies that provided estimates of medication-related problems that caused hospital admissions. Incidence of medication-related hospital admissions, type of medication-related problem contributing to admission (e.g. adverse medicine reaction) and method used to estimate incidence (e.g. chart review) were extracted. Data on severity and preventability of the admissions were extracted where available. The second part of the paper involves use of methodological triangulation to estimate the extent and cost of medication-related hospital admission. Median estimates used to assess medication-related hospital admissions and the 2019–2020 national hospital admissions data were used to calculate the national estimate on the extent of medication-related hospital admission. Costs were also estimated.

Results

Seventeen studies provided estimates on the extent of medication-related hospital admissions as assessed using medication chart review. The median incidence of 2.5% (interquartile range [IQR] 0.6%) as a proportion of all hospital admissions suggests 275,000 hospital admissions annually in Australia are medication related. The median incidence of 9% (IQR 3.9%) of emergency admissions suggests that 270,000 admissions annually are medication related. Eight studies provided estimates of the extent of medication-related hospital admissions identified from administrative health data; the median incidence of 1.7% with an under-reporting rate of 82% suggests 280,000 hospital admissions annually are medication related. Triangulation of results suggests that at least 250,000 hospital admissions annually in Australia are medication related, with an estimated cost of 1.4 billion Australian dollars (AUD$). Five studies assessed severity, and nine studies assessed preventability. Preventability estimates suggest two-thirds of medication-related hospital admissions are potentially preventable.

Conclusions

We estimated that 250,000 hospital admissions in Australia are medication related, with an annual cost of AUD$1.4 billion to the healthcare system. Two-thirds of medication-related hospital admissions are potentially preventable.

Supplementary Information

The online version contains supplementary material available at 10.1007/s40264-021-01144-1.

Parents' perspectives towards paediatric confectionary masked medications: a qualitative study

Background The availability of age-appropriate, taste-masked oral solid medications for the paediatric population is currently inadequate. We have developed a novel chocolate-based drug delivery platform to taste-mask bitter drugs commonly utilised in the hospital setting, but there is limited evidence regarding parent's perspectives on these medications. Aim To identify key themes regarding parents' perspectives on taste-masked medications that look like confectionary. Additionally, to explore and identify the various barriers and facilitators to using oral medication among the paediatric population.Methods Qualitative descriptive study (July to August 2020) at a single tertiary paediatric hospital (Perth Children's Hospital-PCH). Parents with at least one child (2-18 years) that underwent any elective operation at PCH were included in the study, in total 17 were interviewed. Results The two primary themes that underpinned parent's perspectives on taste-masked medications that look like confectionary were medication safety and taste. Majority of parents supported the use of the proposed medication on the basis that the favourable taste profile will facilitate oral consumption, as opposed to their previous experiences with conventional paediatric medications that do not taste mask the bitter flavour. However, medication safety, in the forms of patient education and appropriate packaging, must be considered to minimise harmful misuse of the proposed medication. Conclusion Participants unanimously support the short-term use of taste-masked medications that look like confectionary, particularly in the hospital setting. However, patient education is highly sought after by parents regarding the role of these medications, to ensure medication safety with their children.

Expert Consensus on a List of Inappropriate Prescribing after Prescription Review in Pediatric Units in Abidjan, Côte d'Ivoire

Introduction

Inappropriate prescribing (IP) includes inappropriate prescription and omission of prescription. IP can adversely affect the quality of health care in pediatric units. A list of IP taking into account frequently encountered drug-related problems (DRPs) can be useful to optimize prescriptions in pediatrics. The aim of this study was to validate by expert consensus a list of IP after a prescription review in pediatric units in Abidjan.

Materials and Methods

A list of IPs was developed from a prescription review of inpatients and outpatients aged 1 month to 15 years and followed in pediatric units at teaching hospitals of Abidjan during 16 months. A two-round Delphi method was used to validate a qualitative list of IPs by experts according to their level of agreement on a six-point Likert scale of 0–5 (0, no opinion; 5, strongly agree). Only propositions obtaining the agreement (rating 4 or 5) of >70% of experts who gave a non-zero rating for the first round and 80% for the second round were retained.

Results

A qualitative list of 54 IPs was drawn up from 267 DRPs detected after prescription review of 4,992 prescription lines for 881 patients. Our panel comprised 22 pediatricians (96%) and one clinical pharmacist (4%). Mean agreement ratings were 4.43/5 (95% CI 4.39–4.48) and 4.6/5 (95% CI 4.56–4.64), respectively, during the first Delphi round and the second (p<0.001). At the end of the first round, all items submitted (54) were retained, including 13 items that had been reworded. In the second round, 20 experts participated and two IPs (4%) were not retained for the final list. This list comprised 52 IPs (44 inappropriate prescriptions and eight omissions of prescription).

Conclusion

The list of IP validated in this study should help in the detection of DRPs and optimize prescriptions in pediatric units in Côte d’Ivoire.

The extent of community pharmacists' involvement in detecting and resolving Drug Related Problems (DRPs) in prescriptions – A real time study from Sri Lanka

Background

Appropriate medication use is necessary to ensure patient safety. Drug Related Problems (DRPs) could result in patient harm.

Purpose

To assess the prevalence and types of DRPs in prescriptions, and the proportion of DRPs detected and resolved by community pharmacists during dispensation of prescriptions in a selected community pharmacy.

Methods

A prospective, cross-sectional study was conducted in a selected community pharmacy in Colombo, Sri Lanka, where one researcher reviewed for DRPs in systematically selected prescriptions (N = 400), and another directly observed the frequency of DRPs identified by community pharmacists in the same set of prescriptions. Actions taken by pharmacists on resolving DRPs were also documented. DRPs were classified according to a slightly modified version of Pharmaceutical Care Network Euro pe classification V8.01. Descriptive and comparative data analysis were performed using SPSS database V.21. P < 0.05 was considered as significant.

Results

Among 1986 medications, a total of 1211 DRPs were identified by researchers, of which only 441 DRPs were detected by community pharmacists who participated in the study (N = 24). DRPs identified by the researcher were related to medication selection (N = 15), medication form (N = 1), dose selection (N = 817), duration of treatment (N = 128), incomplete prescriptions (N = 128), and other (outdated prescriptions, missing unit of measurements, and ambiguous names of medications that could not be read by both community pharmacists and researcher) (N = 122) of which only one, one, 394, 13, five, and 27 were identified by pharmacists, respectively. Among 441 DRPs identified by pharmacists, 406 were resolved by them. Most DRPs were self-resolved by pharmacists themselves (367/406), while patients were also sent back to the prescriber (13/406), and some dispensation of medications to patients were refused (9/406).

Conclusion

Among the DRPs frequently observed in the sample of community prescriptions, the community pharmacists identified significantly fewer DRPs in relation to each type identified by the researcher, and pharmacists missed some, including incomplete prescriptions, that had potential to harm. Systematic and sustainable training of pharmacists on performing a preliminary prescription review and continuous education programs must be implemented to improve community pharmacist dispensing practices in this community.

Magnitude and determinants of drug-related problems among patients admitted to medical wards of southwestern Ethiopian hospitals: A multicenter prospective observational study

BACKGROUND

Drug-related problem (DRP) is an event involving drugs that can impact the patient's desired goal of therapy. In hospitalized patients, DRPs happen during the whole process of drug use such as during prescription, dispensing, administration, and follow-up of their treatment. Unrecognized and unresolved DRPs lead to significant drug-related morbidity and mortality. Several studies conducted in different hospitals and countries showed a high incidence of DRPs among hospitalized patients. Despite the available gaps, there were scanties of studies conducted on DRPs among patients admitted to medical wards in Ethiopia. Therefore, this study assessed the magnitude of drug-related problems and associated factors among patients admitted to the medical wards of selected Southwestern Ethiopian hospitals.

PATIENTS AND METHODS

A multicenter prospective observational study was conducted at medical wards of Mettu Karl Hospital, Bedele General Hospital and Darimu General Hospital. Adult patients greater than 18 years who were admitted to the non-intensive care unit (ICU) of medical wards and with more than 48 h of length of stay were included. Identified DRPs were recorded and classified using the pharmaceutical care network Europe foundation classification system and adverse drug reaction was assessed using the Naranjo algorithm of adverse drug reaction probability scale. Hill-Bone Compliance to High Blood Pressure Therapy Scale was used to measure medication adherence. Multivariable logistic regression was used to analyze the associations between the dependent variable and independent variables.

RESULT

Of the 313 study participants, 178 (56.9%) were males. The prevalence of actual or potential DRPs among study participants taking at least a single drug was 212 (67.7%). About 125 (36.63%) patients had one or more co-morbid disease and the average duration of hospital stay of 7.14 ± 4.731 days. A total of 331 DRPs were identified with an average 1.06 DRP per patient. The three-leading categories of DRPs were unnecessary prescription of drugs 92 (27.79%), non-adherence (17.22%) and dose too high (16.92%). The most common drugs associated with DRPs were ceftriaxone (28.37%), cimetidine (14.88%), and diclofenac (14.42%). The area of residence (AOR = 2.550, 95CI%: 1.238-5.253, p = 0.011), hospital stay more than 7 days (AOR = 9.785, 95CI%: 4.668-20.511, p≤0.001), poly pharmacy (AOR = 3.229, 95CI%: 1.433-7.278, p = 0.005) were predictors of drug-related problem in multivariable logistic regression analysis.

CONCLUSION

The magnitude of drug therapy problems among patients admitted to the medical wards of study settings was found to be high. Therefore, the clinical pharmacy services should be established in hospitals to tackle the DTPs in this area. Additionally, healthcare providers of hospitals also should create awareness for patients seeking care from health facilities of the importance of rational drug usage.

The Burden of Preventable Adverse Drug Events on Hospital Stay and Healthcare Costs in Japanese Pediatric Inpatients: The JADE Study

Background:

Adverse drug events (ADEs) are a burden to the healthcare system. Preventable ADEs, which was ADEs due to medication errors, could be reduced if medication errors can be prevent or ameliorate.

Objective:

We investigated the burden of preventable ADEs on the length of hospital stay (LOS) and costs, and estimated the national burden of preventable ADEs in pediatric inpatients in Japan.

Methods:

We analyzed data from the Japan Adverse Drug Events (JADE) study on pediatric patients and estimated the incidence of preventable ADEs and associated extended LOS. Costs attributable to extended LOS by preventable ADEs were calculated using a national statistics database and we calculated the effect of preventable ADEs on national cost excess.

Results:

We included 907 patients with 7377 patient-days. Among them, 31 patients (3.4%) experienced preventable ADEs during hospitalization. Preventable ADEs significantly increased the LOS by 14.1 days, adjusting for gender, age, ward, resident physician, surgery during hospitalization, cancer, and severe malformation at birth. The individual cost due to the extended LOS of 14.1 days was estimated as USD 8258. We calculated the annual extra expense for preventable ADEs in Japan as USD 329 676 760. Sensitivity analyses, considering the incidence of preventable ADEs and the length of hospital stay, showed that the expected range of annual extra expense for preventable ADEs in Japan is between USD 141 468 968 and 588 450 708.

Conclusion:

Preventable ADEs caused longer hospitalization and considerable extra healthcare costs in pediatric inpatients. Our results would encourage further efforts to prevent and ameliorate preventable ADEs.

The prevalence and perception of self-medication among adults in the Klang Valley, Malaysia

OBJECTIVES

Self-medication, while potentially beneficial, also brings certain risks such as inappropriate treatment and adverse effects. In this study, we determine the prevalence and perception towards self-medication among adults living in the Klang Valley, Malaysia.

METHODS

This study was a cross-sectional study which sampled 562 respondents across the Klang Valley, Malaysia using a stratified quota sampling method and a self-administered questionnaire. The questionnaire consisted of three sections: demographic data, self-medication practices and perception towards self-medication. Perception towards self-medication was measured using 20 statements with a 5-point Likert scale. Descriptive and inferential tests as well as factor analysis were used to analyse the data.

KEY FINDINGS

The overall prevalence of self-medication for minor ailments was 63.5%. Self-medication was practised to a similar degree regardless of respondent demographics. Respondents most frequently obtained their medicines for self-medication of minor ailments from pharmacies without consulting the pharmacist (68.6%), followed by using leftover medications at home (44.8%) and obtaining medicines from friends and family (16.0%). Factor analysis revealed that self-medication behaviour is driven by good perception towards self-medication in terms of efficacy, safety and convenience, as well as by previous personal or shared experiences.

CONCLUSION

The prevalence of self-medication is high among adults in the Klang Valley, Malaysia. Adults who self-medicate view the consequences of self-medication in a positive light and may be influenced by previous personal or shared experiences. As certain risks with self-medication may be underestimated, efforts to educate the public while promoting a more proactive approach among healthcare professionals should be encouraged.

Medication - A boon or bane: Emergencies due to medication-related visits

BACKGROUND:

Medication-related visits (MRV) to the Emergency Department (ED) are substantial though weakly recognized and intervened. Data from developing countries on the prevalence of MRV-related ED admissions are scanty. This study is first of its kind in India to estimate the prevalence of MRV, its severity and the factors contributing to these visits.

METHODOLOGY:

This prospective observational study was done in the ED of an apex tertiary care center in August 2018. A convenient cross-sectional sample of patients presenting with emergencies regarding drug use or ill-use were included and a questionnaire filled after obtaining a written informed consent.

RESULTS:

During the study period, a cross-sectional sample of 443 patients was studied and the prevalence of MRV was 27.1% (120/443). The mean age was 55 (standard deviation: 15) years with a male preponderance (60.8%). Triage priority I patients comprised 39.1%. Common presenting complaints included vomiting (25%), seizure (20.8%), giddiness (20%), and abdomen pain (17.5%). Less than ½ (43.3%) were compliant to prescribed medication. The most common reasons for MRV were failure to receive drugs/noncompliance (47.5%), subtherapeutic dosage (25%), and adverse drug reaction (16.7%). Severity of MRV was classified as mild (50%), moderate (38.3%), and severe (11.7%). Out of these visits, 71 (59.2%) were deemed preventable. Three-fourths (73.3%) were stabilized and discharged from the ED.

CONCLUSION:

The fact that a quarter of the ED visits are due to MRV and that more than half of them are preventable is quite alarming. Diligent patient education by the treating physicians may perhaps help in decreasing the incidence of this deleterious event.

Drug-related problems in a general paediatric ward of a tertiary care hospital in Malaysia

Background Drug-related problems are relatively common among hospitalised patients and may be detrimental to patients and even increase healthcare costs. Characterising drug-related problems allows remedial actions to be in place to minimise the frequency and ensure higher medication safety for the patients involved. Currently, the incidence of drug-related problems among hospitalised paediatric patients in Malaysia is unknown. Objective To determine the incidence, types and intervention acceptance, as well as the risk factors associated with drug-related problems in a Malaysian general paediatric ward. Setting General paediatric ward in Universiti Kebangsaan Malaysia Medical Centre. Method A cross-sectional observational study was conducted from March to May 2019. Data were collected from patients' medical charts, clinical notes and medical records for problem identification based on the modified Pharmaceutical Care Network Europe (PCNE) classification V 8.02. The incidence, types, causes and intervention acceptance as well as the risk factors were assessed. Main outcome measure Drug-related problems based on the modified PCNE classification V 8.02. Results In total, 225 paediatric patients with a total of 694 prescriptions were included in this study. The incidence of drug-related problems was 52.9% (198 prescriptions with problems in 119 patients). The main types of problems were treatment safety (68 prescriptions, 34.3%), incomplete prescription (56 prescriptions, 28.3%) and un-optimised drug treatment (35 prescriptions, 17.7%). The main causes for the problems were necessary information not provided (n = 63, 30.1%), inappropriate dose selection (n = 47, 22.5%) and medication served without a valid prescription (n = 40, 19.1%). Of the 143 interventions proposed to prescribers by the pharmacist, 117 (81.8%) were accepted. The number of prescriptions was found to be the only risk factor associated with DRPs (odds ratio, 1.91; 95% confidence interval, 1.54-2.38; p < 0.001). Conclusion The frequency of drug-related problems among general paediatric ward patients is high and with each increase in prescription a patient received, the risk of a DRP doubles.

Identification and Resolution of Drug-Related Problems among Childhood Cancer Patients in Ethiopia

Background

Even though medications play a major role in the cure, palliation, and inhibition of disease, they also expose patients to drug-related problems. Drug-related problems are frequent and may result in reduced quality of life, morbidity, and mortality.

Objectives

The study was aimed to identify, characterize, and resolve drug-related problems in the Pediatric Hematology/Oncology ward of Tikur Anbessa Specialized Hospital, Addis Ababa, Ethiopia.

Methods

A prospective observational study was conducted from 25 June to 25 October 2018 to assess DRPs on patients admitted at the pediatric hematology/oncology ward of Tikur Anbessa Specialized Hospital, which is the highest level governmental tertiary care hospital in Ethiopia. Data were obtained from patients' medical charts, physicians, patients/caregivers, pharmacists, and nurses. All the collected data were entered and analyzed using the Statistical Package for the Social Sciences version 25e. Descriptive statistics were used to represent the data.

Results

Among the total 156 participants, DRPs were identified in 68.6% of the study subjects. Dosing problems which include dosage too low and high were the top ranking (39.3%) of all DRPs followed by needs additional therapy (27.2%) and nonadherence (14.0%). Systemic anti-infectives were the most common class of drugs involved in DRPs. Trimethoprim-sulfamethoxazole, methotrexate, vincristine, ondansetron, and metoclopramide were frequently involved in DRPs. The addition of drugs and change in drug dose were the two most proposed intervention types. Among the proposed interventions, 223 (92.15%) were fully accepted, 9 (3.72%) partially accepted, and 10 (4.13%) not accepted.

Conclusion

DRPs are common among Pediatric Hematology/Oncology ward patients. The hospital should develop a pediatric dosing chart for the commonly prescribed medications to prevent drug-related morbidity and mortality. The integration of clinical pharmacists can mitigate risks associated with DRPs.

Epidemiology of Preventable Drug-Related Problems (DRPs) Among Hospitalized Children at KAMC-Jeddah: a Single-Institution Observation Study

Aim

Drug-related problems (DRPs) "are the unwanted effects of drugs that potentially lead to a harmful outcome" thereby requiring considerable attention. Hospitalized pediatric patients, in particular, represent a population at risk of DRPs. The epidemiology of preventable DRPs among children in Saudi Arabia remains scarce, which thus poses distinct challenges to all healthcare professionals. We aim to characterize preventable DRPs among hospitalized children at KAMC-Jeddah.

Methods

A prospective observational study of children (≤15 years) admitted to pediatric units (excluding cancer units) at KAMC-Jeddah over a 3-month period (May 29 to August 30, 2016) is carried out to determine the incidence of preventable DRPs and investigate the possible associated factors (gender, age, admission location, type of admission, and number of medications).

Results

A total of 319 DRPs were identified among 235 patients, of which 280 DRPs (87.8%, 280/319) were deemed preventable. The majority of preventable DRPs were related to dose selection (78%, 219/280). None of the preventable DRPs were life threatening or fatal, and the majority were assessed as moderate in severity (94.3%, 264/280). There was no significant difference between DRP incidences with age mean 3.5 (P=0.389), gender mean (P=0.436), and weight mean 13.47 (P=0.323). Younger children (age ≤2years) admitted to PICU were more likely to have DRP (OR 4.44, 95% CI, 1.87 to 10.52, P=0.00001). Scheduled admissions were 2.89 times more likely to be exposed to DRP compared to transferred admissions (OR 2.8, 95% CI, 1.83 to 4.70, P=0.005). Additionally, DRP incidences increased proportionally to the number of medications.

Conclusion

Our data suggest that establishing appropriate prevention strategies towards improvement and safety in medicine use among this vulnerable patient population is a high priority.

Prevalence and risk factors of drug-related hospitalizations in multimorbid patients admitted to an internal medicine ward

Background

Knowledge of risk factors for drug-related hospitalizations (DRHs) is limited.

Aim

To examine the prevalence of DRHs and the relationships between DRHs and various variables in multimorbid patients admitted to an internal medicine ward.

Methods

Multimorbid patients ≥ 18 years, using minimum of four regular drugs from minimum two therapeutic classes, were included from the Internal Medicine ward, Oslo University Hospital, Norway, from August 2014 to March 2016. Clinical pharmacists prospectively conducted medicines reconciliations and reviews to reveal drug-related problems (DRPs). Blinded for identified DRPs, an interdisciplinary group retrospectively made comprehensive, clinical assessments of each patient case to classify hospitalizations as drug-related (DRH) or non-drug-related (non-DRH). Age, sex distribution, Charlson Comorbidity Index (CCI), renal function, aberrant genotype frequencies, body-mass index, number of drugs, proportion of patients which received assistance for drug administration from the home care service, and/or through multidose-dispensed drugs, and occurrence of specific DRP subgroups, were compared separately between patients with DRHs versus non-DRHs, followed by multiple logistic regression analysis.

Results

Hospitalizations were classified as drug-related in 155 of the 404 included patients (38%). Factors significantly associated with DRHs were occurrence of adverse effect DRPs (adjusted odds ratio (OR) 3.3, 95% confidence interval (CI) 1.4–8.0), adherence issues (OR 2.9, 1.1–7.2), home care (OR 1.9, 1.1–3.5), drug monitoring DRPs (OR 1.9, 1.2–3.0), and CCI score ≥6 (OR 0.33, 0.14–0.77). Frequencies of aberrant genotypes did not differ between the patient groups, but in 41 patients with DRHs (26.5%), gene-drug interactions influenced the assessments of DRHs.

Conclusion

DRHs are prevalent in multimorbid patients with adverse effect DRPs and adherence issues as the most important risk factors.

Potential drug-drug interactions and their risk factors in pediatric patients admitted to the emergency department of a tertiary care hospital in Mexico

Background

Drug-drug interactions (DDIs) detected in a patient may not be clinically apparent (potential DDIs), and when they occur, they produce adverse drug reactions (ADRs), toxicity or loss of treatment efficacy. In pediatrics, there are only few publications assessing potential DDIs and their risk factors. There are no studies in children admitted to emergency departments (ED). The present study estimates the prevalence and describes the characteristics of potential DDIs in patients admitted to an ED from a tertiary care hospital in Mexico; in addition, potential DDI-associated risk factors are investigated.

Methods

A secondary analysis of data from 915 patients admitted to the ED of the Hospital Infantil de México “Federico Gómez” was conducted. The Medscape Drug Interaction Checker software was used to identify potential DDIs. The results are expressed as number of cases (%), means (95% CI) and medians (25-75^th percentiles). Count data regressions for number of total and severity-stratified potential DDIs were performed adjusting for patient characteristics, number of administered drugs, days of stay, presence of ADRs and diagnoses.

Results

The prevalence of potential DDIs was 61%, with a median of 4 (2–8). A proportion of 0.2% of potential DDIs was “Contraindicated”, 7.5% were classified as “Serious”, 62.8% as “Significant” and 29.5% as “Minor”. Female gender, age, days of stay, number of administered drugs and diagnoses of Neoplasms (C00-D48), Congenital malformations (Q00-Q99), Diseases of the Blood, Blood-forming Organs and Immunity (D50-D89) and Diseases of the nervous system (G00-G99) were significantly associated with potential DDIs.

Conclusion

The prevalence of potential DDIs in the ED is high, and strategies should therefore be established to monitor patients’ safety during their stay, in addition to conducting investigations to estimate the real harm potential DDIs inflict on patients.

Assessment of drug-related problems in pediatric ward of Zewditu Memorial Referral Hospital, Addis Ababa, Ethiopia

Background Although medications play a vital role in the cure, palliation, and inhibition of disease, they also expose patients to drug-related problems (DRPs). DRPs are common in hospitalized patients. Specifically, pediatrics population are easily affected by DRPs, as dynamic and kinetic behaviors of drugs in this population are usually different than  in adults. Objectives To assess the prevalence of DRPs and associated factors in a pediatric setting in Ethiopia. Setting Pediatric ward of Zewditu Memorial Referral Hospital, Addis Abbeba, Ethiopia. Methods A cross-sectional study was conducted on 285 randomly selected patients. Data were obtained through review of physician medication orders and patient files. The prevalence and type of DRPs were studied and documented using the Pharmaceutical Care Network Europe Foundation classification system. The results were summarized using descriptive statistics including frequency, mean, and standard deviation. To identify the independent predicators of DRPs, logistic regression analysis was run and a P value ≤0.05 was considered as statistically significant. Main outcome measure DRPs, types of DRPs, drugs that are frequently involved in DRPs, and factors associated with DRPs. Main outcome measure Number of DRPs. Results Of the 1055 medication orders reviewed, a total of 106 DRPs were identified in 90 patients. This gives an overall rate of drug-related problems of 31.57%. The most frequently identified DRPs were dosing problems, with dose too low being 34.9% and dose too high being 7.5%. This was followed by drug-drug interactions (38.67%) and adverse drug reactions (8.49%). The number of prescribed drugs (AOR 2.3, 95% CI 1.3-4.3, P = 0.007) and total number of disease conditions (AOR 4.8, 95% CI 1.9, 12.1, P = 0.001) were potential risk factors for occurrence of DRPs. Conclusion The present study demonstrated that DRPs were common at the pediatric ward of Zewditu Memorial Referral Hospital and that it needs great attention. The most frequently identified DRPs were dosing problems, followed by drug-drug interactions and adverse drug reaction. Poly-pharmacy and number of disease conditions have been identified as important risk factors for occurrence of DRPs. The investigators recommend establishing a system for reporting DRPs in the pediatric ward of the hospital as it may facilitate appropriate measures for prospective interventions, such as training the healthcare team, as well as detail precautions to be followed by the practitioners. In addition to this, improving communication between the healthcare team members such as physicians, pharmacists, nurses, and other healthcare workers in the hospital is recommended.

Medication-related visits in a pediatric emergency department: an 8-years retrospective analysis

Background

There are limited data on the characterization of medication-related visits (MRVs) to the emergency department (ED) in pediatric patients in Italy. We have estimated the frequency, severity, and classification of MRVs to the ED in pediatric patients.

Methods

We retrospectively analyzed data for children seeking medical evaluation for a MRV over an 8 years period. A medication-related ED visit was identified by using a random pharmacist assessment, emergency physician assessment, and in case of conflicting events, by a third investigators random assessment.

Results

In this study, regarding a single tertiary center in Italy, on a total of 147,643 patients from 0 to 14 years old, 497 medication-related visits were found, 54% of which occurred in children from 0 to 2 years of age. Severity was classified as mild in 21.6% of cases, moderate in 67.2% of cases, and severe in 11.2% of cases. The most common events were related to drug use without indication (51%), adverse drug reactions (30.3%), supratherapeutic dosage (13.2%) and improper drug selection (4.5%).

The medication classes most frequently implicated in an ADE were anti-infective drugs for systemic use (28.9%), central nervous system agents (22.3%) and respiratory system drugs (10.8%).

The most common symptom manifestations were dermatologic conditions (46.1%), general disorder and administration site conditions (29.7%) and gastrointestinal symptoms (16.0%).

Conclusions

To our knowledge, this is the first study in Italy evaluating the epidemiologic characteristics of MRVs confirming a significant cause of healthcare contact resulting in ED visits and hospital admissions with associated resource utilization. Our results suggests further future prospective, large-sample sized, and multicenter research is necessary to better understand the impact of MRVs and to develop strategies to provide care plans and monitor patients to prevent medication-related visits.

Trial registration

Not applicable.

Investigating the Relative Significance of Drug-Related Problem Categories

The aim of the review was to investigate whether an assessment of clinical significance can be related to specific drug-related problems (DRPs) and hence may assist in prioritizing individual categories of DRP categorization systems. The literature search using Google Scholar was performed for the period 1990 to 2013 and comprised primary research studies of clinical pharmacy interventions including DRP and clinical significance assessments. Two reviewers assessed the titles, abstracts, and full-text papers individually, and inclusion was determined by consensus. A total of 27 unique publications were included in the review. They had been conducted in 14 different countries and reported a large range of DRPs (71-5948). Five existing DRP categorisation systems were frequently used, and two methods employed to assess clinical significance were frequently reported. The present review could not establish a consistent relation between the DRP categories and the level of clinical significance. However, the categories "ADR" and possibly "Drug interaction" were often associated with an assessed high clinical significance, albeit they were infrequently identified in the studies. Hence, clinical significance assessments do not seem to be useful in prioritizing individual DRPs in the DRP categorization systems. Consequently, it may be necessary to reconsider our current approach for evaluating DRPs.

Pediatric hospital admission due to adverse drug reactions: Report from a tertiary center

OBJECTIVE

Adverse drug reactions (ADRs) are known as a cause of hospital admission. We have carried out a prospective study to characterize and assess the frequency, probability, preventability, and severity of ADRs, which lead to hospital admission in children.

METHODS

In a prospective observational study, a cohort of children admitted to a tertiary pediatric hospital was randomly screened to assess ADR as the cause of admission from June 2014 to January 2015. ADRs causing admissions were detected based on patients' records, interviewing their parents, and confirmation by medical team. The probability of the ADRs was assessed based on WHO criteria and Naranjo tool. The preventability assessment was performed using Schumock and Thornton questionnaire.

FINDINGS

Of the 658 evaluated emergency admissions, 27 were caused by an ADR giving an incidence of 4.1%. Among ADRs, 37.1% were estimated to be preventable. Antibiotics were the most common medication class which caused hospital admission.

CONCLUSION

Pediatric pharmacotherapy still needs evidence-based strategies to improve child care including education, monitoring, planning for medications after ADR occurrence, and implementing preventive measures when applicable.

Pattern of Adverse Drug Reactions in Children Attending the Department of Pediatrics in a Tertiary Care Center: A Prospective Observational Study

AIM

To study the pattern of various adverse drug reactions (ADRs) occurring in children attending the Department of Pediatrics, SMGS Hospital, Jammu over 1 year.

SUBJECTS AND METHODS

This was a prospective study, with study population of patients attending Department of Pediatrics over a period of 1 year. A structured format was used to enroll the participants. A pilot study was conducted to test the suitability of the format and feasibility of the study. The study was carried out to review various pattern of ADRs by using the Naranjo probability scale, and severity was assessed by using the Hartwig severity scale. ADRs were classified according to the classification used by the Adverse Drug Reaction Monitoring Center, Central Drugs Standard Control Organization, New Delhi, India.

RESULTS

In the present study, 104 patients were found to have developed acute drug reactions. Among these, 83.6% were type B, 14.42% type A, and 1.92% were type U. Furthermore, 25.96% ADRs were due to anticonvulsants, followed by antibiotics (22.11%), antipyretics (11.53%), vaccination (8.65%), steroids (6.73%), decongestants (5.67%), snake antivenom and antiemetics (3.84%), and fluids, insulin, and antacids (1.92%). The patients’ dermatological system was involved in 67.30%, followed by the central nervous system (CNS) in 11.53% patients. Renal system was involved in 6.73% patients. Cardiac, musculoskeletal, metabolic, and other systems were involved in 4.80%, 3.84%, 2.88%, and 0.96%, respectively. According to the Hartwig severity scale of ADRs, 64.4% patients had moderate ADRs, 29.8% patients had severe ADRs, and 5.76% had mild ADRs. In the present study, 64.4% patients expressed moderate severity, whereas 29.8% expressed high severity and 5.76% expressed mild ADRs.

CONCLUSION

ADRs were seen in 71% of the patients between 1 and 5 years of age, 26% in the age group of 5–10 years, and 3% were more than 10 years old. Anticonvulsants (25.96%) and antibiotics (22.11%) were responsible for majority of ADRs. Rash (55.76%) was the most common presentation of ADR. Owing to the high number of ADRs, the present study points to the need for rigid adverse drug monitoring among pediatric patients to ensure the safety of drug therapy.

Medication-related emergency department visits in pediatrics: a prospective observational study

BACKGROUND AND OBJECTIVE

There are few data on the rate and characterization of medication-related visits (MRVs) to the emergency department (ED) in pediatric patients. We sought to evaluate the frequency, severity, preventability, and classification of MRVs to the ED in pediatric patients.

METHODS

We performed a prospective observational study of pediatric patients presenting to the ED over a 12-month period. A medication-related ED visit was identified by using pharmacist assessment, emergency physician assessment, and an independent adjudication committee.

RESULTS

In this study, 2028 patients were enrolled (mean age, 6.1 ± 5.0 years; girls, 47.4%). An MRV was found in 163 patients (8.0%; 95% confidence interval [CI]: 7.0%-9.3%) of which 106 (65.0%; 95% CI: 57.2%-72.3%) were deemed preventable. Severity was classified as mild in 14 cases (8.6%; 95% CI: 4.8%-14.0%), moderate in 140 cases (85.9%; 95% CI: 79.6%-90.8%), and severe in 9 cases (5.5%; 95% CI: 2.6%-10.2%). The most common events were related to adverse drug reactions 26.4% (95% CI: 19.8%-33.8%), subtherapeutic dosage 19.0% (95% CI: 13.3%-25.9%), and nonadherence 17.2% (95% CI: 11.7%-23.9%). The probability of hospital admission was significantly higher among patients with an MRV compared with those without an MRV (odds ratio, 6.5; 95% CI: 4.3-9.6) and, if admitted, the median (interquartile range) length of stay was longer (3.0 [5.0] days vs 1.5 [2.5] days, P = .02).

CONCLUSIONS

A medication-related cause was found in ∼1 of every 12 ED visits by pediatric patients, of which two-thirds were deemed preventable. Pediatric patients who present to the ED with an MRV are more likely to be admitted to hospital and when admitted have a longer length of stay.

Epidemiology and potential risk factors of drug-related problems in Hong Kong paediatric wards

AIMS

A drug-related problem (DRP) is ‘an event or circumstance involving drug therapy that actually or potentially interferes with the desired health outcome’. The extent and characteristics of DRPs in children in Hong Kong are unknown. The aim of this study was to determine the epidemiology of and identify riskf actors for DRPs in hospitalized children in Hong Kong.

METHODS

This was a prospective cohort study in children aged 0–18 years who were admitted to a medical ward, paediatric intensive care unit or neonatal intensive care unit of seven Hong Kong hospitals, during a 3 month period. Patients’ charts, medical records and laboratory data were reviewed daily to identify DRPs; their preventability and severity were assessed. Logistic regression was used to analyse potential risk factors associated with the incidence of DRPs.

RESULTS

Three hundred and twenty-nine children (median age, 2 years; interquartile range, 0 months to 9 years) were included. In total, 82 DRPs were experienced by 69 patients. The overall incidence of DRPs was 21.0% (95% confidence interval, 16.7–25.8%). The incidence was higher in neonatal and paediatric intensive care units than medical wards. Dosing problems were the most frequently reported DRPs (n = 35; 42.7%), followed by drug choice problems (n = 19; 23.2%) and adverse drug reactions (n = 11; 13.4%). Sixty-seven (81.7%) DRP cases were assessed as preventable, 42 (51.2%) as minor and 40 (48.8%) as moderate. The number of prescribed drugs and ‘certain infectious and parasitic diseases’ were potential risk factors for occurrence of DRPs.

CONCLUSIONS

Drug-related problems were common in hospitalized children in this study in Hong Kong; the most frequent were dosing and drug choice problems, and the majority of them were preventable. Polypharmacy and ‘certain infectious and parasitic diseases’ were potential risk factors.

Pediatric perspective on pharmacogenomics

The advances in high-throughput genomic technologies have improved the understanding of disease pathophysiology and have allowed a better characterization of drug response and toxicity based on individual genetic make up. Pharmacogenomics is being recognized as a valid approach used to identify patients who are more likely to respond to medication, or those in whom there is a high probability of developing severe adverse drug reactions. An increasing number of pharmacogenomic studies are being published, most include only adults. A few studies have shown the impact of pharmacogenomics in pediatrics, highlighting a key difference between children and adults, which is the contribution of developmental changes to therapeutic responses across different age groups. This review focuses on pharmacogenomic research in pediatrics, providing examples from common pediatric conditions and emphasizing their developmental context.

A prospective three-step intervention study to prevent medication errors in drug handling in paediatric care

AIMS AND OBJECTIVES

To prevent medication errors in drug handling in a paediatric ward.

BACKGROUND

One in five preventable adverse drug events in hospitalised children is caused by medication errors. Errors in drug prescription have been studied frequently, but data regarding drug handling, including drug preparation and administration, are scarce.

DESIGN

A three-step intervention study including monitoring procedure was used to detect and prevent medication errors in drug handling.

METHODS

After approval by the ethics committee, pharmacists monitored drug handling by nurses on an 18-bed paediatric ward in a university hospital prior to and following each intervention step. They also conducted a questionnaire survey aimed at identifying knowledge deficits. Each intervention step targeted different causes of errors. The handout mainly addressed knowledge deficits, the training course addressed errors caused by rule violations and slips, and the reference book addressed knowledge-, memory- and rule-based errors.

RESULTS

The number of patients who were subjected to at least one medication error in drug handling decreased from 38/43 (88%) to 25/51 (49%) following the third intervention, and the overall frequency of errors decreased from 527 errors in 581 processes (91%) to 116/441 (26%). The issue of the handout reduced medication errors caused by knowledge deficits regarding, for instance, the correct 'volume of solvent for IV drugs' from 49-25%.

CONCLUSION

Paediatric drug handling is prone to errors. A three-step intervention effectively decreased the high frequency of medication errors by addressing the diversity of their causes.

RELEVANCE TO CLINICAL PRACTICE

Worldwide, nurses are in charge of drug handling, which constitutes an error-prone but often-neglected step in drug therapy. Detection and prevention of errors in daily routine is necessary for a safe and effective drug therapy. Our three-step intervention reduced errors and is suitable to be tested in other wards and settings.

ADRIC: Adverse Drug Reactions In Children – a programme of research using mixed methods

Aims

To comprehensively investigate the incidence, nature and risk factors of adverse drug reactions (ADRs) in a hospital-based population of children, with rigorous assessment of causality, severity and avoidability, and to assess the consequent impact on children and families. We aimed to improve the assessment of ADRs by development of new tools to assess causality and avoidability, and to minimise the impact on families by developing better strategies for communication.

Review methods

Two prospective observational studies, each over 1 year, were conducted to assess ADRs in children associated with admission to hospital, and those occurring in children who were in hospital for longer than 48 hours. We conducted a comprehensive systematic review of ADRs in children. We used the findings from these studies to develop and validate tools to assess causality and avoidability of ADRs, and conducted interviews with parents and children who had experienced ADRs, using these findings to develop a leaflet for parents to inform a communication strategy about ADRs.

Results

The estimated incidence of ADRs detected in children on admission to hospital was 2.9% [95% confidence interval (CI) 2.5% to 3.3%]. Of the reactions, 22.1% (95% CI 17% to 28%) were either definitely or possibly avoidable. Prescriptions originating in the community accounted for 44 out of 249 (17.7%) of ADRs, the remainder originating from hospital. A total of 120 out of 249 (48.2%) reactions resulted from treatment for malignancies. Off-label and/or unlicensed (OLUL) medicines were more likely to be implicated in an ADR than authorised medicines [relative risk (RR) 1.67, 95% CI 1.38 to 2.02;p < 0.001]. When medicines used for the treatment of oncology patients were excluded, OLUL medicines were not more likely to be implicated in an ADR than authorised medicines (RR 1.03, 95% CI 0.72 to 1.48;p = 0.830). For children who had been in hospital for > 48 hours, the overall incidence of definite and probable ADRs based on all admissions was 15.9% (95% CI 15.0 to 16.8). Opiate analgesic drugs and drugs used in general anaesthesia (GA) accounted for > 50% of all drugs implicated in ADRs. The odds ratio of an OLUL drug being implicated in an ADR compared with an authorised drug was 2.25 (95% CI 1.95 to 2.59;p < 0.001). Risk factors identified were exposure to a GA, age, oncology treatment and number of medicines. The systematic review estimated that the incidence rates for ADRs causing hospital admission ranged from 0.4% to 10.3% of all children [pooled estimate of 2.9% (95% CI 2.6% to 3.1%)] and from 0.6% to 16.8% of all children exposed to a drug during hospital stay. New tools to assess causality and avoidability of ADRs have been developed and validated. Many parents described being dissatisfied with clinician communication about ADRs, whereas parents of children with cancer emphasised confidence in clinician management of ADRs and the way clinicians communicated about medicines. The accounts of children and young people largely reflected parents’ accounts. Clinicians described using all of the features of communication that parents wanted to see, but made active decisions about when and what to communicate to families about suspected ADRs, which meant that communication may not always match families’ needs and expectations. We developed a leaflet to assist clinicians in communicating ADRs to parents.

Conclusion

The Adverse Drug Reactions In Children (ADRIC) programme has provided the most comprehensive assessment, to date, of the size and nature of ADRs in children presenting to, and cared for in, hospital, and the outputs that have resulted will improve the management and understanding of ADRs in children and adults within the NHS. Recommendations for future research: assess the values that parents and children place on the use of different medicines and the risks that they will find acceptable within these contexts; focusing on high-risk drugs identified in ADRIC, determine the optimum drug dose for children through the development of a gold standard practice for the extrapolation of adult drug doses, alongside targeted pharmacokinetic/pharmacodynamic studies; assess the research and clinical applications of the Liverpool Causality Assessment Tool and the Liverpool Avoidability Assessment Tool; evaluate, in more detail, morbidities associated with anaesthesia and surgery in children, including follow-up in the community and in the home setting and an assessment of the most appropriate treatment regimens to prevent pain, vomiting and other postoperative complications; further evaluate strategies for communication with families, children and young people about ADRs; and quantify ADRs in other settings, for example critical care and neonatology.

Funding

The National Institute for Health Research Programme Grants for Applied Research programme.

Public perceptions of pharmacogenetics

BACKGROUND AND OBJECTIVES

Pharmacogenetics (PGx) promises to optimize patient response to therapy. However, the public's acceptance of PGx is not well known, notably when this applies to children. Our objective was to explore perceptions of PGx testing among individuals, who differ from each other by either parental status or educational exposure to PGx, and to explore parents' views between PGx testing for oneself and PGx testing for their children.

METHODS

An exploratory survey was conducted among parents and other adults. Surveys P and C were completed by parents, survey NP by middle-aged nonparents, and survey MS by medical students.

RESULTS

Proper explanation before PGx testing appeared to be the most important issue to the respondents (eg, P = 1.55 × 10(-38) for survey NP). Respondents who were more knowledgeable about PGx were also more comfortable with PGx testing (eg, P = 2.53 × 10(-7) in case of mild disease). When PGx testing was for one's child, parents valued their own understanding more than their child's assent (P = 1.57 × 10(-17)).

CONCLUSIONS

The acceptability of PGx testing, either for oneself or for one's child, seemed to depend on baseline PGx knowledge, but not on parenthood.

Adverse drug reactions of spontaneous reports in Shanghai pediatric population

Background

Knowledge of drug safety in the pediatric population of China is limited. This study was designed to evaluate ADRs in children reported to the spontaneous reporting system (SRS) of Shanghai in 2009.

Methodology and Principal Findings

Crude ADR reports submitted to Shanghai SRS in 2009 for individuals aged from birth to 17 years (including 17 years) were included. Data were analyzed with respect to age, gender, category of ADR (System Organ Class [SOC]), the severity of reports and type of reporter.

Results

A male overrepresentation was observed regarding the total number of reports. The most frequently reported group of drugs were vaccines (42.15%). Skin rash and fever were the commonest symptoms reported in the total pediatric dataset. The proportion of children that suffered from a serious ADR was 2.16% and that for drug related deaths was 0.34%. And we found that the multiple drug exposure experienced a high proportion of serious ADRs compared with the single drug use (χ² = 15.99, P<0.0001). Sixty-five percent of ADRs were for children less than 6 years of age. And more than half of reports were from doctors.

Conclusions

In our study, consumers were more likely to report new ADRs though they appear to contribute a relatively small percentage of total reports. We propose that patients would take an active role in reporting ADRs. More researches are needed in order to achieve better understanding the characteristics of ADRs in pediatric population of China.

Comparative epidemiology of hospital-acquired adverse drug reactions in adults and children and their impact on cost and hospital stay--a systematic review

PURPOSE

To study and analyze the comparative impact of hospital-acquired adverse drug reactions (ADRs) in adult and pediatric patients in terms of the economic implications, (length of) hospital stay, and salient features in relation to the incidence rate, severity, morbidity, mortality, and preventability of the ADRs.

METHODS

A systematic search to identify and retrieve relevant articles/studies in the PubMed, Medline, Scopus, MEDPAR, and Cochrane databases and by the Google search engine was performed for the study period 2000 to April 2013. In total, 51 studies were identified on patients hospitalized for ADRs, and these were included in the study. The incidence rate of ADRs, their severity, mortality, morbidity, preventability, cost, and association with extended hospital stay due to ADRs were extracted and scrutinized.

RESULTS

Hospital-acquired ADRs are more widely studied in adults than in children, and the incidence rate is higher in the former. However, a wide variation in the incidence rate worldwide is observed in both groups. Irrespective of the ages of patients, ADRs are among the most frequent causes of morbidity and mortality. Interestingly, preventable ADRs are more frequently observed in patients at the younger and older ends of the age spectrum. Hospital-acquired ADRs place an immense economic burden on healthcare systems, with the overall cost for a hospitalized patient with an ADR reported to be $2,401 per patient, which is equivalent to a 19.86 % additional increase in the total cost of care and an increase in average length of hospital stay of 8.25 %.

CONCLUSION

Based on the findings of this review, we suggest that excellent assertive measures of pharmacovigilance with the aim to diminish the incidence rate of hospital-acquired ADRs and support the development of interventions are needed to promote vital facets of drug safety with an overall objective to avert potential ADRs.

Medication-related emergency department visits and hospital admissions in pediatric patients: a qualitative systematic review

OBJECTIVE

To review and describe the current literature pertaining to the incidence, classification, severity, preventability, and impact of medication-related emergency department (ED) and hospital admissions in pediatric patients.

STUDY DESIGN

A systematic search of PubMED, Embase, and Web of Science was performed using the following terms: drug toxicity, adverse drug event, medication error, emergency department, ambulatory care, and outpatient clinic. Additional articles were identified by a manual search of cited references. English language, full-reports of pediatric (≤18 years) patients that required an ED visit or hospital admission secondary to an adverse drug event (ADE) were included.

RESULTS

We included 11 studies that reported medication-related ED visit or hospital admission in pediatric patients. Incidence of medication-related ED visits and hospital admissions ranged from 0.5%-3.3% and 0.16%-4.3%, respectively, of which 20.3%-66.7% were deemed preventable. Among ED visits, 5.1%-22.1% of patients were admitted to hospital, with a length of stay of 24-72 hours. The majority of ADEs were deemed moderate in severity. Types of ADEs included adverse drug reactions, allergic reactions, overdose, medication use with no indication, wrong drug prescribed, and patient not receiving a drug for an indication. Common causative agents included respiratory drugs, antimicrobials, central nervous system drugs, analgesics, hormones, cardiovascular drugs, and vaccines.

CONCLUSION

Medication-related ED visits and hospital admissions are common in pediatric patients, many of which are preventable. These ADEs result in significant healthcare utilization.

Drug-Related Hospital Visits and Admissions Associated with Laboratory or Physiologic Abnormalities-A Systematic-Review

Countless studies have demonstrated that many emergency-room visits and hospital admissions are drug-related and that a significant proportion of these drug-related visits (DRVs) are preventable. It has not been previously studied which DRVs could be prevented through enhanced monitoring of therapy. The objective of the study was to determine the incidence of DRVs attributed to laboratory or physiologic abnormalities. Three authors independently performed comprehensive searches in relevant health care databases using pre-determined search terms. Articles discussing DRV associated with poisoning, substance abuse, or studied among existing in-patient populations were excluded. Study country, year, sample, design, duration, DRV identification method, proportion of DRVs associated with laboratory or physiologic abnormalities and associated medications were extracted. The three authors independently assessed selected relevant articles according to the Strengthening the reporting of observational studies in epidemiology (STROBE) as applicable according to the studies' methodology. The initial literature search yielded a total of 1,524 articles of which 30 articles meeting inclusion criteria and reporting sufficient laboratory or physiologic data were included in the overall analysis. Half employed prospective methodologies, which included both chart review and patient interview; however, the overwhelming majority of identified studies assessed only adverse drug reactions (ADRs) as a drug-related cause for DRV. The mean (range) prevalence of DRVs found in all studies was 15.4% (0.44%–66.7%) of which an association with laboratory or physiologic abnormalities could be attributed to a mean (range) of 29.4% (4.3%–78.1%) of cases. Most laboratory-associated DRVs could be linked to immunosuppressant, antineoplastic, anticoagulant and diabetes therapy, while physiologic-associated DRVs were attributed to cardiovascular therapies and NSAIDs. Significant proportions of laboratory and physiologic abnormalities contribute to DRVs and are consistently linked to specific drugs. These therapies are potential targets for enhanced medication monitoring initiatives to proactively avert potential DRVs.

Adverse drug reactions causing admission to a paediatric hospital

Objective(s)

To obtain reliable information about the incidence of adverse drug reactions, and identify potential areas where intervention may reduce the burden of ill-health.

Design

Prospective observational study.

Setting

A large tertiary children’s hospital providing general and specialty care in the UK.

Participants

All acute paediatric admissions over a one year period.

Main Exposure

Any medication taken in the two weeks prior to admission.

Outcome Measures

Occurrence of adverse drug reaction.

Results

240/8345 admissions in 178/6821 patients admitted acutely to a paediatric hospital were thought to be related to an adverse drug reaction, giving an estimated incidence of 2.9% (95% CI 2.5, 3.3), with the reaction directly causing, or contributing to the cause, of admission in 97.1% of cases. No deaths were attributable to an adverse drug reaction. 22.1% (95% CI 17%, 28%) of the reactions were either definitely or possibly avoidable. Prescriptions originating in the community accounted for 44/249 (17.7%) of adverse drug reactions, the remainder originating from hospital. 120/249 (48.2%) reactions resulted from treatment for malignancies. The drugs most commonly implicated in causing admissions were cytotoxic agents, corticosteroids, non-steroidal anti-inflammatory drugs, vaccines and immunosuppressants. The most common reactions were neutropenia, immunosuppression and thrombocytopenia.

Conclusions

Adverse drug reactions in children are an important public health problem. Most of those serious enough to require hospital admission are due to hospital-based prescribing, of which just over a fifth may be avoidable. Strategies to reduce the burden of ill-health from adverse drug reactions causing admission are needed.

Parental reporting of adverse drug events and other drug-related problems in children in Finland

PURPOSE

Drug-related problems (DRPs) are common in paediatric pharmacotherapy, but few studies describe them from the parents' perspective. In the present survey, we have investigated the lifetime prevalence and type of DRPs in children in Finland.

METHODS

This was a population-based survey of a random sample of 6,000 children below 12 years of age in 2007. A questionnaire was sent to their parents. The final response rate was 67% with a study population of 4,032. The main outcome measure was the lifetime prevalence and type of DRPs.

RESULTS

The lifetime prevalence of DRPs was 21% (95% CI 20-22). The most common (82%) of the 1,346 reported DRPs were adverse drug events (ADEs). The prevalence of ADEs was 17% (95% CI 16-19), that of other DRPs 5.2% (95% CI 4.5-5.9). The prevalence of serious ADEs was 0.4% and that of unexpected ADEs was 0.8%. The most common system involved in the ADEs was the gastrointestinal tract, comprising 34% of the 1,106 ADEs. The most common of the 240 other DRPs were problems with the administration and dosing of medicine (86%). Overall, 64% of DRPs were related to anti-infectives.

CONCLUSIONS

One fifth of the Finnish children below 12 years of age had experienced DRPs. Appropriate counselling, including possible adverse drug reactions and dosing directions, is important for parents and children at both the prescribing and dispensing of medicines for paediatric patients. Reporting of any suspected serious or unexpected ADEs is an essential part of efficient pharmacovigilance in paediatrics.

Terms used in patient safety related to medication: a literature review

PURPOSE

There is a lack of homogeneity in the terminology used in the context of patient safety related to medication. The aim of this review was to identify the terms and definitions used in patient safety related to medication within the scientific literature.

METHODS

Original and review articles that were indexed between 1998 and 2008 in MEDLINE and EMBASE and contained terms used in patient safety related to medication were included. Terms and definitions were extracted and categorised according to whether its definition referred to the process of medication use, or to the clinical outcome of medication use, or both.

RESULTS

Of 2564 articles, 147 were included. Sixty terms used in patient safety related to medication with 189 different definitions were identified. Among terms that referred only to the process of medication use (n = 23), medication error provided the greatest number of definitions (n = 29). Among terms that referred only to the clinical outcome of medication use (n = 31), adverse drug event provided the greatest number of definitions (n = 15). Finally, among terms that referred both to the process of use and to the clinical outcome of medication use (n = 13), drug-related problem provided the greatest number of definitions (n = 7).

CONCLUSIONS

A multitude of terms and definitions are used in patient safety related to medication. This heterogeneity makes it difficult to compare the results among studies and to appreciate the true magnitude of the problem. Classifying and unifying the terminology is necessary to advance in patient safety strategies.

Epidemiology and potential associated risk factors of drug-related problems in hospitalised children in the United Kingdom and Saudi Arabia

AIM

Drug-related problems (DRP) are "an event or circumstance involving drug therapy that actually or potentially interferes with the desired health outcome". The extent and characteristics of DRPs in children in the UK and the Kingdom of Saudi Arabia (KSA) are unknown. Our aim was to determine the epidemiology of and identify risk factors for DRPs in hospitalised children.

METHODS

A prospective cohort study was carried out in children aged 0-18 years, admitted to the medical ward, paediatric intensive care unit (PICU) and neonatal intensive care unit (NICU) during a 3-month period in two hospitals. Patients' charts, medical records and laboratory data were reviewed daily to identify DRPs; their preventability and severity were assessed. Logistic regression was used to analyse the potential risk factors associated with DRP incidence.

RESULTS

Seven hundred and thirty-seven children (median age 2.3 years, interquartile range 6 months to 8 years, 58.1% male) were included. Three hundred and thirty-three patients suffered from 478 DRPs. Overall DRP incidence was 45.2% (95% CI, 41.5-48.8); KSA (51.1%; 95% CI, 45.8-56.3), UK (39.4%; 95% CI, 34.4-44.6). Incidence was highest in the PICU (59.7%; 95% CI, 47.0-71.5). Dosing problems were the most frequently reported DRPs (n = 258, 54%). 80.3% of DRP (n = 384) cases were preventable; 72.2% (n = 345) of DRPs were assessed as minor; 27% (n = 129) as moderate. Number of prescriptions and type of admission (transferred) were potential risk factors for DRP occurrence in children.

CONCLUSIONS

Drug-related problems were common in the hospitalised children in this study; the most frequent were dosing problems and drug choice problems; the majority of them were preventable. Polypharmacy and transferred admission (another hospital or ward) were potential risk factors. To improve prescribing practices and minimise the risk of DRPs in hospitalised children, paediatric pharmacology and pharmacotherapy are important in medical education.

Adverse drug reactions in children--a systematic review

BACKGROUND

Adverse drug reactions in children are an important public health problem. We have undertaken a systematic review of observational studies in children in three settings: causing admission to hospital, occurring during hospital stay and occurring in the community. We were particularly interested in understanding how ADRs might be better detected, assessed and avoided.

METHODS AND FINDINGS

We searched nineteen electronic databases using a comprehensive search strategy. In total, 102 studies were included. The primary outcome was any clinical event described as an adverse drug reaction to one or more drugs. Additional information relating to the ADR was collected: associated drug classification; clinical presentation; associated risk factors; methods used for assessing causality, severity, and avoidability. Seventy one percent (72/102) of studies assessed causality, and thirty four percent (34/102) performed a severity assessment. Only nineteen studies (19%) assessed avoidability. Incidence rates for ADRs causing hospital admission ranged from 0.4% to 10.3% of all children (pooled estimate of 2.9% (2.6%, 3.1%)) and from 0.6% to 16.8% of all children exposed to a drug during hospital stay. Anti-infectives and anti-epileptics were the most frequently reported therapeutic class associated with ADRs in children admitted to hospital (17 studies; 12 studies respectively) and children in hospital (24 studies; 14 studies respectively), while anti-infectives and non-steroidal anti-inflammatory drugs (NSAIDs) were frequently reported as associated with ADRs in outpatient children (13 studies; 6 studies respectively). Fourteen studies reported rates ranging from 7%-98% of ADRs being either definitely/possibly avoidable.

CONCLUSIONS

There is extensive literature which investigates ADRs in children. Although these studies provide estimates of incidence in different settings and some indication of the therapeutic classes most frequently associated with ADRs, further work is needed to address how such ADRs may be prevented.

Adverse drug reaction-related admissions in paediatrics, a prospective single-centre study

OBJECTIVE

To investigate the incidence and characteristics of hospital admissions related to adverse drug events in the paediatric setting.

DESIGN

Prospective single-centre study.

SETTING

A secondary and tertiary paediatric care centre.

PARTICIPANTS

A total of 683 acutely admitted patients, aged 0-18 year. All acutely admitted patients, using medication before admission, were prospectively screened for possible Adverse Drug Reactions (ADR)-related admission with a trigger list. Included cases were analysed with the Naranjo score for the assessment of causality.

MAIN OUTCOME MEASURES

This research explored the incidence of ADR-related admissions and investigated the relation between ADR and the licensing status of the medicines, as well as the severity and potential to prevent the ADRs.

RESULTS

A total of 683 patients were admitted acutely during the study period, 47 of them were exposed to cancer chemotherapy. Fifteen patients not exposed to chemotherapy (2.4%) were admitted due to an ADR. Five of these 15 ADRs (33%) were caused by unlicensed or off-label used drugs. Thirty-two patients exposed to chemotherapy (68.1%) were admitted due to an ADR; 27 of these (84%) were caused by unlicensed or off-label used drugs.

CONCLUSIONS

In conclusion, this study shows that ADR-related hospital admissions occur more frequently in the paediatric population compared with adults, and more frequently in patients exposed to cancer chemotherapy. No relation was found between the unlicensed and off-label used drugs and the incidence of ADRs.

Epidemiology and characteristics of adverse drug reactions caused by drug-drug interactions

INTRODUCTION

Drug-drug interactions (DDIs) arise in numerous different ways, involving pharmacokinetic or pharmacodynamic mechanisms. Adverse drug reactions are a possible consequence of DDIs and health operators are often unaware of the clinical risks of certain drug combinations. Many papers on drug interactions have been published in recent years, but most of them focused on potential DDIs while few studies have been conducted on actual interactions.

AREAS COVERED

This paper reviews the epidemiology of actual DDIs in outpatients as well as in hospital settings and in spontaneous reporting databases. The incidence of actual DDIs is consistently lower than that of potential DDIs. However, the absolute number of patients involved is high, representing a significant proportion of adverse drug reactions. The importance of risk factors such as age, polypharmacy and genetic polymorphisms is also evaluated. The relevance and efficacy of tools for recognizing and preventing DDIs are discussed.

EXPERT OPINION

Potential DDIs far outnumber actual drug interactions. The potential for an adverse interaction to occur is often theoretical, and clinically important adverse effects occur only in the presence of specific risk factors. Several studies have shown the efficacy of computers in early detection of DDIs. However, a correct risk-benefit evaluation by the prescribing physician, together with a careful clinical, physiological and biochemical monitoring of patients, is essential. Future directions of drug interaction research include the increasing importance of pharmacogenetics in preventing DDIs and the evaluation of interactions with biological drugs.

Study on drug related hospital admissions in a tertiary care hospital in South India

BACKGROUND AND OBJECTIVES

Accidental and intentional poisonings or drug overdoses constitute a significant source of aggregate morbidity, mortality, and health care expenditure. Studies evaluating drug related hospitalization have estimated that approximately 5-10% of all hospital admissions are drug related. The present study was carried out to investigate type, nature and incidence of drug related admissions in our hospital settings.

METHOD

A hospital based retrospective study was conducted in 575 cases of drug related admissions. The case records of patients admitted in various clinical departments of Amrita Institute of Medical Sciences (AIMS) Hospital during last 8 years (January 2002-December 2009) were collected and analyzed.

RESULTS

During the retrospective study, the total number of drug related cases reported were 575. Out of these, 35.5% cases were induced by central nervous system (CNS) drugs, 19.8% were by cardiovascular system (CVS) drugs, 12.3% were by NSAIDs, 11.3% were by antibiotics and 9.9% were by anticoagulants, 11.3% by other drugs which includes hormones, cytotoxic drugs, hypolipidemics, etc. Four hundred and forty cases were admitted to emergency department. Common drug related problems resulting in hospital visits were due to intentional, accidental and overdose. The incidence of drug related hospital admissions was found to be 0.20%.

CONCLUSION

The most of the accidental and suicidal cases were reported are by CNS drugs. Psychiatric patients intentionally taking medicines as suicidal attempt and as a part of their illness. As drug related problems are so significant, increased awareness and enhanced collaborative efforts among patients, physicians, pharmacists and caregivers within community and hospital have the potential to minimize the impact of this problem.

Adverse drug reactions causing admission to a paediatric hospital: a pilot study

WHAT IS KNOWN AND OBJECTIVE

It is known that adverse drug reactions (ADRs) cause admission to hospital in adults and children. A recent adult study showed that ADRs are an important and frequent cause of hospital admission. The objective of this study is to develop methodology to ascertain the current burden of ADRs through a prospective analysis of all unplanned admissions to a paediatric hospital.

METHODS

Prospective observational study over a 2-week period.

RESULTS AND DISCUSSION

There were 19 admissions to the main hospital wards related to an ADR, giving an estimated incidence of 4%, with the ADR directly leading to the admission in 71% of cases. There were no deaths attributable to ADR. 33% of the reactions were possibly avoidable. The drugs most commonly implicated in causing admissions were anti-neoplastic agents. The most common reactions were neutropenia, vomiting and diarrhoea. The health burden of ADRs in the paediatric population is likely to be significant. This pilot study will be used to inform a much larger prospective study providing more detailed evidence of the burden of ill-health from ADRs in children. This larger study will add to a body of research aiming to identify drug-related problems within children to aid paediatric pharmacovigilance.

WHAT IS NEW AND CONCLUSION

This study provides knowledge regarding the methodology to be used for a larger study investigating ADRs in children. The study will allow authors who wish to replicate the study in their own populations (internationally) to avoid some of the pitfalls in planning a large epidemiological study of paediatric ADRs. The study also provides an estimate of the incidence and problem of admissions caused by ADRs in a UK paediatric population.