Hospital admissions caused by adverse drug events: an Australian prospective study.

OBJECTIVE: To assess the frequency of adverse drug event (ADE)-related admissions (ADE-RAs) during a prospective medical record review of patients admitted to a metropolitan tertiary referral hospital. METHODS: Potential ADE-RA cases were identified by examination of case records of randomly selected patients. Cases were assessed by an expert panel to measure study outcomes, which were the frequency (ADEs and ADE-RAs) as well as type, likelihood of causality, severity, avoidability and detection of ADEs. RESULTS: Of the 370 subjects, 59 (16.0%) had a confirmed ADE-RA, with 15 (4.1%) of these serious and preventable. The 59 ADE-RAs were a result of 72 discreet ADEs. Adverse drug reactions were the most common type of ADE, followed by non-compliance. Of the 72 discreet ADEs, 31.9% were classified as 'probable' or 'highly probable'. Most ADEs (54.2%) were classified as 'definitely avoidable', 34.7% were classified as 'severe' and 21.8% were classified as both 'definitely avoidable' and 'severe'. Half the ADEs were detected after the patient had been admitted and most were detected by medical practitioners. Antineoplastics followed by antidiabetic agents were most frequently implicated. CONCLUSIONS: Implementing a systems approach that involves multiple strategies, such as improving tertiary-to-primary care information transfer and promoting medication adherence through education programs, is necessary to tackle the problem of avoidable ADE-RAs and the associated cost burden. WHAT IS KNOWN ABOUT THE TOPIC? It is estimated that 2-3% of Australian hospital admissions are due to adverse drug events (ADEs), but recent data are lacking. According to the Australian Statistics on Medicines, over 250 million prescriptions were dispensed in 2007, compared with just under 180 million in 1997. This 40% increase in drug utilisation over the 10 years surpasses the Australian population growth of 14% in the same period. An increase in drug use per person indicates that the rate of ADEs and possible ADE-related admissions (ADE-RAs) is likely to have increased. WHAT DOES THIS PAPER ADD? This prospective study was conducted at a large Australian metropolitan teaching hospital and we report that 59 of 370 participants (16.0%) presenting to the Emergency Department had a confirmed ADE-RA, with 15 (4.1%) presenting with a serious and preventable ADE-RA. WHAT ARE THE IMPLICATIONS FOR PRACTITIONERS? The findings of this study support implementing a systems approach involving multiple strategies to tackle the problem of avoidable ADE-RAs and the associated cost burden. This study reveals that half the ADEs were not detected until after the admission process, which reinforces the importance of focusing efforts towards preventing ADE-RAs and detecting ADE-RAs through measures such as those recommended in the Australian Pharmaceutical Advisory Council guiding principles.

ReactNMR and ReactIR as reaction monitoring and mechanistic elucidation tools: the NCS mediated cascade reaction of α-thioamides to α-thio-ß-chloroacrylamides.

On-flow ReactIR and (1)H NMR reaction monitoring, coupled with in situ intermediate characterization, was used to aid in the mechanistic elucidation of the N-chlorosuccinimide mediated transformation of an α-thioamide. Multiple intermediates in this reaction cascade are identified and characterized, and in particular, spectroscopic evidence for the intermediacy of the chlorosulfonium ion in the chlorination of α-thioamides is provided. Further to this, solvent effects on the outcome of the transformation are discussed. This work also demonstrates the utility of using a combination of ReactIR and flow NMR reaction monitoring (ReactNMR) for characterizing complex multicomponent reaction mixtures.

Renal dysfunction in cystic fibrosis: is there cause for concern?

Most people associate cystic fibrosis (CF) with lung disease. Although this is the major cause of morbidity and mortality, CF is in fact a multi-organ disease. Patients with CF are living longer. Accompanying their increased life expectancy are complications not previously encountered. One of the less obvious concerns is that of renal dysfunction associated with long-term exposure to aminoglycosides as well as renally toxic immunosuppressants in lung transplant recipients. This article reviews what is known about the extent of the problem, summarizes what the current practices of measuring and monitoring renal function in patients with CF, and makes suggestions for alternative approaches. In particular, the potential role of cystatin C will be discussed.

Post-discharge medication reviews for patients with heart failure: a pilot study.

BACKGROUND: Medication misadventure is greatest at times of change such as the transition from hospital to community. Patients with heart failure are prone to medication misadventure due to polypharmacy, inappropriate medication use and frequent readmissions. OBJECTIVE: To identify the barriers encountered when implementing a Liaison Pharmacist facilitated post-discharge medication management service for patients with heart failure. METHOD: A Liaison Pharmacist contacted the patient's General Practitioner (GP), sent them a medication discharge summary and organised an appointment for the patient with the GP approximately 2 days post-discharge to make a Home Medicines Review (HMR) referral. The patient's community pharmacist was also contacted, sent a medication discharge summary and requested to engage an accredited pharmacist to undertake the HMR. The Liaison Pharmacist arranged for the HMR report to be sent to the outpatient department clinic to enable assessment of outcomes at the outpatient department follow-up 12 weeks post-discharge. MAIN OUTCOME MEASURE: GP HMR referral rates. RESULTS: 90 patients were offered the service. Fifty-nine patients (66%) agreed to have their GP contacted with 56 GPs agreeing to order a HMR and 41 patients having an HMR post-discharge. Barriers to the implementation of a HMR post-discharge included: patient withdrawal, low GP awareness of the HMR process and conducting the HMR in a timely manner. CONCLUSION: This study provides evidence for the feasibility of a post-discharge pharmacy service for patients with heart failure although barriers to implementation have been identified.

Pharmacist elicited medication histories in the Emergency Department: Identifying patient groups at risk of medication misadventure

The Australian Pharmaceutical Advisory Committee guidelines call for a detailed medication history to be taken at the first point of admission to an Emergency Department (ED). The elderly, in particular those residing in Residential Aged Care Facilities and those with a non-English speaking background, have been identified as patient groups vulnerable to medication misadventure. Objective: to analyse the incidence of discrepancies in medication histories in these demographic groups when pharmacist elicited medication histories were compared with those taken by ED physicians. It also aimed to investigate the incidence of medication related ED presentations. Methods: The study was conducted over a six week period and included 100 patients over the age of 70, who take five or more regular medications, have three or more clinical co-morbidities and/or have been discharged from hospital in three months prior to the study. Results: Twenty four participants were classified as 'language barrier'; 12 participants were from residential aged care facilities, and 64 participants were classified as 'general'. The number of correctly recorded medications was lowest in the 'language barrier' group (13.8%) compared with 18% and 19.6% of medications for 'general' patients and patients from residential aged care facilities respectively. Seven of the patients (29.2%) with 'language barrier'; 1 from a residential aged care facility (8.3%) and 13 of the (20.3%) patients from the 'general' category were suspected as having a medication related ED presentation. Conclusion: This study further highlights the positive contribution an ED pharmacist can make to enhancing medication management along the continuum of care. This study also confirms the vulnerability of patients with language barrier to medication misadventure and their need for interpreter services at all stages of their hospitalisation, in particular at the point of ED presentation (AU)

Las guías del Comité Consultivo Farmacéutico Australiano establecen que se lleve una historia de medicación detallada desde el primer punto de entrada en un servicio de urgencias (SU). Los ancianos, en particular los que residen en Residencias de Ancianos y los que no son hablantes nativos ingleses, se han identificado como grupos de pacientes vulnerables a las desgracias medicamentosas. Objetivo: Analizar la incidencia de discrepancias en las historias de medicación en estos grupos demográficos cuando el farmacéutico obtuvo el historial farmacoterapéutico comparado con los recopilados por los médicos del Servicio de Urgencias. También trató de investigar la incidencia de visitas al SU relacionadas con medicamentos. Métodos. Este estudio se condujo en un periodo de seis semanas e incluyó 100 pacientes de edad superior a 70 años, que tomaban regularmente 5 o más medicamentos, tenían 3 o mas comorbilidades clínicas y/o habían sido dados de alta del hospital en los 3 meses anteriores al estudio. Resultados: 24 participantes fueron calificados con 'barreras lingüísticas'; 12 participantes estaban en residencias de ancianos, y 64 participantes fueron calificados de 'generales'. El número de medicaciones correctamente registradas fue menor en los de 'barreras lingüísticas' (13,8%) comparado con el 18% y el 19,6% de las medicaciones para los 'generales' y los pacientes de residencias de ancianos, respectivamente. En 7 de los pacientes (29,2%) con 'barreras lingüísticas', 1 de residencias de ancianos (8,3%) y 13 (20,3%) de los 'generales' se sospechó que tenían una visita al SU relacionada con los medicamentos. Conclusiones: Este estudio ensalza la contribución positiva que un farmacéutico de urgencias puede realizar para elevar la gestión de la medicación en el continuum de cuidados. Este estudio también confirma la vulnerabilidad e los pacientes con barreras lingüísticas ante las desgracias medicamentosas y su necesidad de servicios de interpretes en todas las etapas de su hospitalización, en particular en el punto de entrada al SU (AU)

Eliciting comprehensive medication histories in the emergency department: the role of the pharmacist

The Australian Pharmaceutical Advisory Committee guidelines call for a detailed medication history to be taken at the first point of admission to hospital. Accurate medication histories are vital in optimising health outcomes and have been shown to reduce mortality rates. This study aimed to examine the accuracy of medication histories taken in the Emergency Department of the Royal Adelaide Hospital. Medication histories recorded by medical staff were compared to those elicited by a pharmacy researcher. The study, conducted over a six-week period, included 100 patients over the age of 70, who took five or more regular medications, had three or more clinical co-morbidities and/or had been discharged from hospital in three months prior to the study. Following patient interviews, the researcher contacted the patient's pharmacist and GP for confirmation and completion of the medication history. Out of the 1152 medications recorded as being used by the 100 patients, discrepancies were found for 966 medications (83.9%). There were 563 (48.9%) complete omissions of medications. The most common discrepancies were incomplete or omitted dosage and frequency information. Discrepancies were mostly medications that treated dermatological and ear, nose and throat disorders but approximately 29% were used to treat cardiovascular disorders. This study provides support for the presence of an Emergency Department pharmacist who can compile a comprehensive and accurate medication history to enhance medication management along the continuum of care. It is recommended that the patient's community pharmacy and GP be contacted for clarification and confirmation of the medication history (AU)

Las guías del Comité Consultivo Farmacéutico Australiano piden que se realice un historial de medicación detallado en el punto de ingreso del hospital. Para optimizar los resultados en salud son vitales los historiales de medicación fiables que han demostrado reducir las tasas de mortalidad. Este estudio trató de examinar la fiabilidad de los historiales de medicación tomados en el Servicio de Urgencias del Hospital Real de Adelaida registradas por el personal médicos y se compararon con las extraídas por un investigador de farmacia. El estudio, conducido durante seis semanas, incluyó 100 pacientes de mas de 70 años que tomaban cinco o mas medicamentos habituales, tenían tres o más comorbilidades y/o habían sido dados de alta del hospital en los tres meses anteriores al estudio. Después de las entrevistas a los pacientes, el investigador contactaba al farmacéutico y al médico del paciente para la confirmación y compleción del historial. Del as 1152 medicaciones registradas como utilizadas por los 100 pacientes, se encontraron discrepancias en 966 (83,9%). Hubo 563 (48,9%) omisiones completas de medicación. Las discrepancias más comunes fueron la omisión de dosis y frecuencia. Las discrepancias eran mayoritariamente medicaciones dermatológicas y para problemas de oído, nariz y garganta, pero alrededor del 29% eran usadas para tratar problemas cardiovasculares. Este estudio da apoyo a la presencia de un farmacéutico en un Servicio de Urgencias que pueda compilar un historial de medicación intensivo y fiable para mejorar la gestión del a medicación en el continuum de la atención. Es recomendable contactar con el farmacéutico comunitario y el médico del paciente para la clarificación y confirmación del historial de medicación (AU)

Pharmacist elicited medication histories in the Emergency Department: Identifying patient groups at risk of medication misadventure.

UNLABELLED: The Australian Pharmaceutical Advisory Committee guidelines call for a detailed medication history to be taken at the first point of admission to an Emergency Department (ED). The elderly, in particular those residing in Residential Aged Care Facilities and those with a non-English speaking background, have been identified as patient groups vulnerable to medication misadventure. OBJECTIVE: to analyse the incidence of discrepancies in medication histories in these demographic groups when pharmacist elicited medication histories were compared with those taken by ED physicians. It also aimed to investigate the incidence of medication related ED presentations. METHODS: The study was conducted over a six week period and included 100 patients over the age of 70, who take five or more regular medications, have three or more clinical co-morbidities and/or have been discharged from hospital in three months prior to the study. RESULTS: Twenty four participants were classified as 'language barrier'; 12 participants were from residential aged care facilities, and 64 participants were classified as 'general'. The number of correctly recorded medications was lowest in the 'language barrier' group (13.8%) compared with 18% and 19.6% of medications for 'general' patients and patients from residential aged care facilities respectively. Seven of the patients (29.2%) with 'language barrier'; 1 from a residential aged care facility (8.3%) and 13 of the (20.3%) patients from the 'general' category were suspected as having a medication related ED presentation. CONCLUSION: This study further highlights the positive contribution an ED pharmacist can make to enhancing medication management along the continuum of care. This study also confirms the vulnerability of patients with language barrier to medication misadventure and their need for interpreter services at all stages of their hospitalisation, in particular at the point of ED presentation.

Eliciting comprehensive medication histories in the emergency department: the role of the pharmacist.

The Australian Pharmaceutical Advisory Committee guidelines call for a detailed medication history to be taken at the first point of admission to hospital. Accurate medication histories are vital in optimising health outcomes and have been shown to reduce mortality rates. This study aimed to examine the accuracy of medication histories taken in the Emergency Department of the Royal Adelaide Hospital. Medication histories recorded by medical staff were compared to those elicited by a pharmacy researcher. The study, conducted over a six-week period, included 100 patients over the age of 70, who took five or more regular medications, had three or more clinical co-morbidities and/or had been discharged from hospital in three months prior to the study. Following patient interviews, the researcher contacted the patient's pharmacist and GP for confirmation and completion of the medication history. Out of the 1152 medications recorded as being used by the 100 patients, discrepancies were found for 966 medications (83.9%). There were 563 (48.9%) complete omissions of medications. The most common discrepancies were incomplete or omitted dosage and frequency information. Discrepancies were mostly medications that treated dermatological and ear, nose and throat disorders but approximately 29% were used to treat cardiovascular disorders. This study provides support for the presence of an Emergency Department pharmacist who can compile a comprehensive and accurate medication history to enhance medication management along the continuum of care. It is recommended that the patient's community pharmacy and GP be contacted for clarification and confirmation of the medication history.

Privileged structure based ligands for melanocortin receptors--4,4-disubstituted piperidine derivatives.

Homologation and cyclization back to the chiral methine of compound 3 yields achiral 4,4-disubstituted piperidine privileged structures (e.g., 8a) useful in the construction of melanocortin 4 receptor (MC4R) ligands. The piperidine nitrogen was replaced with carbon, oxygen, sulfur, and sulfone with minor erosion of binding. The methyl cyclohexane substituent was the most potent while significant affinity was still seen for smaller lipophilic groups such as ethyl.

Synthesis and structure-activity relationships of novel dipeptides and reduced dipeptides as ligands for melanocortin subtype-4 receptor.

A series of benzylic piperazines (e.g., 4 and 5) attached to an 'address element', the dipeptide H-D-Tic-D-p-Cl-Phe-OH, 3 has been identified as ligands for the melanocortin subtype-4 receptor (MC4R). We describe herein the structure-activity relationship (SAR) studies on the N-terminal residue of the 'address element'. Several novel dipeptides and reduced dipeptides with high MC4R binding affinities and selectivity emerged from this SAR study.

The Effect of an Interactive Tutorial on the Prescribing Performance of Senior Medical Students.

OBJECTIVES: To evaluate the effectiveness of small group tutorials in teaching senior medical students the requirements of prescription writing. DESIGN: Random allocation to interactive tutorial or didactic lecture with blinded evaluation. SUBJECTS: All 1999 6th year medical students, the University of Adelaide. RESULTS: The Tutorial Attenders (mean 13.3, SD 2.6) performed significantly better than the Lecture Group (mean12.2, SD 3.0) p=0.041 and the Non-attenders (mean10.7, SD 3.1) p=0.041 and the Non-attenders (mean10.7, SD 3.1) p= 0.001. The 13 individual OSCE items formed four logical subgroups, and the Tutorial Attenders performed significantly better in Prescription Writing in all comparisons. CONCLUSION: A single, one-hour interactive tutorial is likely to be the minimum amount of intervention that will be effective in improving prescribing skills.

A prospective multicentre study of pharmacist initiated changes to drug therapy and patient management in acute care government funded hospitals.

AIMS: To determine the cost savings of pharmacist initiated changes to hospitalized patients' drug therapy or management in eight major acute care government funded teaching hospitals in Australia. METHODS: This was a prospective study performed in eight hospitals examining resource implications of pharmacists' interventions assessed by an independent clinical panel. Pharmacists providing clinical services to inpatients recorded details of interventions, defined as any action that directly resulted in a change to patient management or therapy. An independent clinical review panel, convened at each participating centre, confirmed or rejected the clinical pharmacist's assessment of the impact on length of stay (LOS), readmission probability, medical procedures and laboratory monitoring and quantified the resultant changes, which were then costed. RESULTS: A total of 1399 interventions were documented. Eight hundred and thirty-five interventions impacted on drug costs alone. Five hundred and eleven interventions were evaluated by the independent panels with three quarters of these confirmed as having an impact on one or more of: length of stay, readmission probability, medical procedures or laboratory monitoring. There were 96 interventions deemed by the independent panels to have reduced LOS and 156 reduced the potential for readmission. The calculated savings was $263 221 for the eight hospitals during the period of the study. This included $150 307 for length of stay reduction, $111 848 for readmission reduction. CONCLUSIONS: The annualized cost savings relating to length of stay, readmission, drugs, medical procedures and laboratory monitoring as a result of clinical pharmacist initiated changes to hospitalized patient management or therapy was $4 444 794 for eight major acute care government funded teaching hospitals in Australia.

Catalytic regioselective sulfonylation of alpha-chelatable alcohols: scope and mechanistic insight.

This paper describes a convenient protocol for the regioselective sulfonylation of alpha-chelatable alcohols. Typically, the reaction of alpha-heterosubstituted alcohols with 1 equiv of p-TsCl and 1 equiv of Et(3)N in the presence of 2 mol % of Bu(2)SnO leads to rapid, regioselective, and exclusive monotosylation. The pK(a) of the amine was correlated to the reaction rate. A plausible mechanism for this reaction has been proposed on the basis of (119)Sn NMR studies.