Milan Kriška

Should medical students learn to develop a personal formulary? An international, multicentre, randomised controlled study

ObjectiveThis study was performed to determine whether students who are trained in developing a personal formulary become more competent in rational prescribing than students who have only learned to use existing formularies.MethodsThis was a multicentre, randomised, controlled study conducted in eight universities in India, Indonesia, the Netherlands, the Russian Federation, Slovakia, South Africa, Spain and Yemen. Five hundred and eighty-three medical students were randomised into three groups: the personal formulary group (PF; 94), the existing formulary group (EF; 98) and the control group (C; 191). The PF group was taught how to develop and use a personal formulary, whereas e the EF group was taught how to review and use an existing formulary. The C group received no additional training and participated only in the tests. Student’s prescribing skills were measured by scoring their treatment plans for written patient cases.ResultsThe mean PF group score increased by 23% compared with 19% for the EF group (p < 0.05) and 6% for controls (p < 0.05). The positive effect of PF training was only significant in universities that had a mainly classic curriculum.ConclusionTraining in development and use of a personal formulary was particularly effective in universities with a classic curriculum and with traditional pharmacology teaching. In universities with a general problem-based curriculum, pharmacotherapy teaching can be based on either existing or personal formularies.

Drug utilisation in outpatient children. A comparison among Tenerife, Valencia, and Barcelona (Spain), Toulouse (France), Sofia (Bulgaria), Bratislava (Slovakia) and Smolensk (Russia)

IntroductionScarce information about comparative diagnostic and therapeutic patterns in paediatric outpatients of different countries is found in the literature.ObjectiveTo describe the similarities and differences observed in diagnosis and therapeutic patterns of paediatric patients of seven locations in different countries.DesignCross-sectional, prospective, international comparative, descriptive study.Patients and methodsA randomly selected sample of 12,264 paediatric outpatients seen in consultation rooms of urban and rural areas and attended by paediatricians or general practitioners of the participating locations. Data on patient demographic information, diagnosis and pharmacological treatment were collected using pre-designed forms. Diagnoses were coded using the ICD-9 and drugs according to the ATC classification.ResultsAmong the ten most common diagnoses, upper respiratory tract infections are in the first position in all locations; asthma prevalence is highest in Tenerife (8.4%). Tonsillitis, otitis, bronchitis and dermatological affections are the most common diagnoses in all locations. Pneumonia is only reported in Sofia (3.8%) and Smolensk (2.3%). The average number of drugs prescribed per child varied from 1.3 in Barcelona to 2.9 in Smolensk. There are no great differences in the profile of pharmacological groups prescribed, but a considerable range of variations in antibiotic therapy is observed: prescription of cephalosporins is low in Smolensk (0.7%) and higher in the other locations, from 16.5% (Bratislava) to 28% (Tenerife). Macrolides prescriptions range from 12.6% (Toulouse) to 24.7% (Smolensk), except in Sofia where they drop to 5.6%. Trimethoprim and its combinations are used in Smolensk (23.3%), Sofia (11.8%) and Bratislava (8.7%). Check-up consultations are not recorded in Smolensk and Bratislava, whereas in Toulouse these visits account for 16.2% of all consultations and in the other locations the percentage varies from 6.1% (Tenerife) to 1.9% (Sofia). Homeopathic treatments are registered only in Toulouse.ConclusionExcept in asthma prevalence, there are no great differences in diagnostic maps among locations. Significant variations in the number of drugs prescribed per child and antibiotic therapies are observed. Areas for improvement have been identified.

Pharmacological treatment of acute otitis media in children. A comparison among seven locations: Tenerife, Barcelona and Valencia (Spain), Toulouse (France), Smolensk (Russia), Bratislava (Slovakia) and Sofia (Bulgaria)

ObjectiveTo describe patterns observed in the treatment of acute otitis media (AOM) in several locations of five countries.Patients and methodsCross-sectional, descriptive study. Random sample of 12,264 paediatric outpatients seen by paediatricians or general practitioners (GPs). Data on patient demographics, diagnoses and treatment were collected. Diagnoses were coded by ICD-9 and drugs by ATC classification. Patients diagnosed with AOM (ICD-9 codes: 381 and 382) were selected for analysis.ResultsCases of AOM (873) accounted for 7.1% of the sample. There is a clear variation in the percentage of children diagnosed with AOM and treated with antibiotics in the different locations, antibiotic prescriptions being higher in Barcelona (93% of children), and lowest in Smolensk (56.4 % of children were treated without antibiotics). The antibiotics used varied widely: ampicillin use is almost limited to Smolensk (26.7%) and Bratislava (13.8%), whereas amoxicillin plus clavulanic acid is the choice in Toulouse (33.8%), Valencia (30.2%) and Barcelona (28.9%), and cephalosporins are more frequently prescribed in Tenerife (51.7%). Finally, macrolides are used in Barcelona (18.3%), Valencia (17.5%) and Tenerife (13.6%), but not prescribed in Toulouse or Sofia. Prescriptions of anti-inflammatory drugs were only relevant in Valencia (31.7%), Tenerife (27.2%) and Toulouse (17.4%) and of otological preparations in Sofia, where almost each child received ear drops (91.9%). Nasal preparations are commonly used only in Sofia (41.9%), Bratislava (65.5%) and Smolensk (68.6%).ConclusionDespite the general agreement of most guidelines, wide differences in the treatment of uncomplicated AOM in children are observed. Non-antibiotic therapy for AOM and the use of first-choice antibiotics should be more actively encouraged in the primary care centres. Studies to measure prevailing rates of antibiotic resistance in these populations are needed.

Analysis of non-steroidal anti-inflammatory drug use in hospitalized patients and perception of their risk

ABSTRACT Non-steroidal anti-inflammatory drugs (NSAIDs) belong to the most widely prescribed and used pharmacological agents worldwide. Data gathered in the last decade show increased incidence of thrombotic events during NSAID administration. Analysis of NSAID usage and assessment of risk for development of cardiovascular adverse effects is needed for improving patient safety. For limiting the impact of adverse effects on the health of patients, NSAID users should be informed about the possible adverse effects and their symptoms to ensure early detection and treatment discontinuation. In the presented study, we retrospectively analyzed the administration of NSAIDs in a group of patients (n=428) in need of analgesic treatment hospitalized at a department of internal medicine. Factors increasing the risk for cardiovascular adverse effects were also investigated. A separate questionnaire study was conducted to gather information concerning the knowledge of hospitalized NSAID users (n=251) about adverse effects of the medication used. For purpose of comparison, we conducted a similar study in a group of 234 random respondents from a shopping center. Data were evaluated using descriptive statistics, Student´s t-test and chi-squared test. Our results suggest that the majority of patients treated with NSAIDs have factors indicating increased risk of development of adverse effects, most commonly arterial hypertension (58.2% of patients). The results of our questionnaire study show limited knowledge of NSAID users about the risk of the therapy. Nearly half of the respondents were unaware of any adverse effects. We consider as alarming that only a limited number of respondents were informed by their physician or pharmacist about the possible risks of treatment. In conclusion, we found that hospitalized NSAID users often have a history of diseases predisposing to the development of cardiovascular adverse effects of NSAIDs. Despite this, their knowledge about the risk of treatment is insufficient.

Factors influencing prognosis of pneumonia in elderly patients.

Background and aims: Polymorbidity reduces the survival of elderly patients with pneumonia. The aim of the proposed study was to identify factors determining mortality in such patients. Methods: From January 1, 1999 to December 31, 2001, 2870 patients were admitted to the Clinic of Geriatric Medicine, Faculty of Medicine, Comenius University, Bratislava. From these, 199 patients treated for pneumonia (average age ±SD 79.7±7.6 yr) were assigned to a retrospective study. 112 patients recovered and 87 died. The prognostic significance of the chosen factors was evaluated by comparing their incidence between the groups of surviving and non-surviving patients. Results: Prognosis for patients with pneumonia is worsened significantly by: older age; immobilization syndrome; incontinence of urine and feces; presence of some clinical and laboratory characteristics at the time of diagnosis of pneumonia (respiratory insufficiency, absence of fever, leukocytosis); pneumonia acquired in hospital; immunosuppressive therapy and comorbid conditions (congestive heart failure, chronic renal insufficiency, anemia, hepatic, psychiatric and neoplastic diseases). According to multivariate analysis, the most significant mortality-predicting characteristics were: immobilization (odds ratio (OR) 9.36; 95% confidence interval (CI) 3.92-22.33); congestive heart failure (OR 8.26; 95% CI 3.08-22.14); immunosuppressive therapy (OR 7.47; 95% CI 2.54–21.98) and psychiatric diseases (OR 4.53; 95% CI 1.94–10.58). Conclusions: Patients with immobilization, congestive heart failure, immunosuppressive therapy, or psychiatric diseases run a high risk of death and require intensive medical care.

Trends in vascular pharmacology research in the Department of Pharmacology and Clinical Pharmacology, Faculty of Medicine, Comenius University, Bratislava

Trends in vascular pharmacology research in the Department of Pharmacology and Clinical Pharmacology, Faculty of Medicine, Comenius University, Bratislava Research in the Department of Pharmacology started to focus intensively on fetal circulation in the 60s. Results of experiments contributed to clarification of the conversion of fetal circulation type to the adult type: the mechanism of the ductus arteriosus closure, examination of fetal and neonatal pulmonary vessel responses. In the early 80s, increased attention was dedicated to fetal vascular endothelium, later on to vascular reactivity in relation to the endothelium in adult animals. We developed original models of vascular endothelial damage using the perfusion method (repeated vasoconstrictive stimuli, deendothelization by air bubbles). We developed a new technique for in vitro endothelial loss quantification on Millipore filters. Under in vitro conditions, the protective effects of sulodexide and pentoxifylline on vascular endothelium were evaluated. In recent years were studied protective effects of selected substances in vivo in models of endothelial damage (e.g. stress, toxic tissue damage, diabetes mellitus, hypertension). The role of potassium channels in the hypertension model was studied in cooperation with the Czech Academy of Sciences. Assessment of vascular reactivity in the diabetic model was significantly improved by computer. In addition to experimental work, the department is solving problems of clinical pharmacology - especially drug risk evaluation (non-steroidal anti-inflammatory drugs). Recently, we have dealt with pharmacoepidemiological studies in geriatric patients and with cardiovascular risk of NSAIDs in relation to pharmacotherapy. The results of these studies may be an impulse for targeted problem solving in our experiments.

Drug-Induced Rheumatic Syndromes

More than 15 % of patients seek medical care for musculoskeletal complaints. Prevalence of musculoskeletal disorders grows with the increasing age. The most common of them are osteoarthritis, gout, rheumatoid arthritis, polymyalgia rheumatica and infectious arthritis. The initial diagnosis of a disease as systemic lupus erythematosus (SLE), idiopathic inflammatory myositis or dermatosclerosis is not common in older individuals and should be subject to additional diagnosis, taking into account mainly in older patients also drug-induced conditions.

A commentary on a decrease in consumption of selective COX-2 inhibitors (coxibs) Comparison between Slovakia and Nordic countries.

PURPOSE The aim of our work was to analyze utilization patterns in Slovakia and Nordic countries and to determine coxib risk perception among medical professionals. METHODS The consumption of coxibs in Slovakia during 1999-2009 was analyzed. Data were obtained from the State Institute for Drug Control in SR. Obtained results were compared to data based on annual health statistics in Denmark, Finland and Norway. General Practitioners were asked on a perceived risk. RESULTS We observed an increase of consumption in first years, followed with a marked decrease after year 2004. Slovak consumption was very small. Coxibs represented in Slovakia only a small part of totally prescribed non-steroidal anti-inflammatory drugs. They constituted only 1.44 % in the year 2003, whereas in Norway 41.2 %. 14 % of respondents (n=570) marked coxibs to be the safest analgesic drug. CONCLUSION Published data show that consumption of coxibs (rofecoxib was linked with serious thrombotic cardiovascular adverse effect) fall down markedly. Consumption data from 1999 until 2009 from Slovakia and three Nordic countries showed significant differences (p<0.001). During the observed period, the utilization of coxibs in Slovakia was very small - a possible explanation is new drug, higher prize, doctors habits (Tab. 2, Fig. 1, Ref. 11).

Prescribers' indications for drugs in childhood: A survey of five European countries (Spain, France, Bulgaria, Slovakia and Russia): Prescriptions for children in five countries

Background: Indication‐based, in comparison to diagnoses‐based, drug utilization studies in children are scarce in the literature. Aim: To determine the adequacy of the prescribers indications for specific drug treatments compared to the current literature in five different European countries; and to show the possibilities of performing indication‐based drug utilization studies. Design: a descriptive, cross‐sectional, international study. Patients and methods: Randomly selected sample of 12 264 paediatric outpatients seen in consultation rooms attended by paediatricians or general practitioners. Data on patient demographics, diagnoses, and pharmacological treatment, with therapeutic indications for each drug, were collected in pre‐designed forms. Diagnoses and indications were coded using the ICD‐9 and drugs according to the ATC classifications. Results: Indications were registered for every drug prescribed in all locations. Antibiotic indications considered incorrect (common cold, upper respiratory tract infections, viral infections, general symptoms or “not specified”) accounted from 24.1% of the total antibiotics prescribed in Tenerife to 67.4% in Slovakia. Incorrect indication of first‐choice antibiotics prescribed in acute otitis media and tonsillitis ranged from 28.9% of total antibiotics use in Russia to 75.4% in Tenerife. Correct antibiotic indications ranged from 23.4% of total antibiotics used in Slovakia to 65.7% in Tenerife. Aspirin use in febrile viral conditions was detected mainly in Toulouse and Russia.