An evaluation of near-patient testing for Helicobacter pylori in general practice

Introduction : A knowledge of Helicobacter pylori status is likely to be important in the management of patients presenting in general practice with dyspepsia. Near-patient testing kits for the detection of the H. pylori antibodies in whole blood, which provide results very quickly, are now available.
Aim : To determine the test characteristics of the Helisal Rapid Blood test in general practice and to describe the ways in which general practitioners incorporate the results of H. pylori testing into their management of patients with dyspepsia.
Setting : Nine general practices in the United Kingdom.
Patients : Consecutive patients presenting with dyspepsia in whom further investigation or referral was considered.
Methods : A whole blood fingerstick sample was tested for H. pylori antibodies using the Helisal Rapid Blood test and a venous sample was obtained for subsequent laboratory testing using Helisal Serum and Helico G (ELISA) methods. Results of the three tests were compared and analysed. Clinical data were recorded by the general practitioners.
Results : Full serological data were obtained on 123 patients, mean age 44.8 years. The sensitivity and specificity of the Helisal Rapid Blood test, compared with concordant results of the laboratory tests, were 83% and 78%, respectively. The prevalence of H. pylori -positive patients was 57%, with a positive predictive value of 83% and a negative predictive value of 78%. The results of the test had a significant impact on the clinical management of the patients in the study.
Comment : The Helisal Rapid Blood test is a useful and convenient method of improving the clinical care of patients with dyspepsia in general practice.     

Synthesis and anticonvulsant testing of 4-phenylsemicarbazides

A series of compounds based on the semicarbazide structure have been synthesized. Anticonvulsant activity was found in a majority of the compounds using both the maximal electroshock seizure and the subcutaneous pentylenetetrazol seizure threshold tests. Activity of the compounds was weaker than the 1,1,2-trisubstituted semicarbazides previously reported.     

Compliance with anticonvulsant therapy in a hospital clinic and in the community

1 Seizure control, saliva anticonvulsant concentration, prescribing habits and compliance with anticonvulsant medication have been compared in 86 epileptic subjects attending either a specialist hospital clinic or general practice surgeries. 2 Of all subjects experiencing recurrent seizures 70% had saliva concentrations of phenytoin below the range equivalent to the 'therapeutic range' of plasma concentration. Mean saliva phenytoin concentrations did not differ significantly between the two treatment settings and were low largely because of the low mean dosage prescribed. 3 Eleven subjects in all had no detectable phenytoin in their and could clearly be identified as noncompliant. Freedom from seizures appeared to predispose to poor compliance in these subjects as well as among those admitting repeated omission of doses.     

Changing patterns of antidepressant use and costs in a health maintenance organisation

This study examined changes in the utilisation and costs of different antidepressants, particularly the selective serotonin reuptake inhibitors (SSRIs), and changes in the use of mental health services in a US health maintenance organisation (HMO) over the 8-year period following the introduction of SSRIs. It was hypothesised that SSRIs would be used increasingly in this setting, and that SSRI users would show a pattern of mental health service utilisation that was indicative of more severe psychiatric illnesses or prior treatment failures. Both hypotheses were accepted. The use of antidepressants nearly tripled over the 8-year period, with SSRIs showing the largest increase; per capita antidepressant costs increased more than 10-fold, largely because of the high cost per unit of SSRIs. Estimated daily doses of SSRIs were largely within the recommended ranges, although the duration of use was short if their primary purpose was the treatment of depression. Incident (first-time) users of SSRIs, and patients who switched to SSRIs from other antidepressants, used more inpatient and outpatient mental health services than users of other antidepressants. Use of the psychiatric hospital among antidepressant users increased, then decreased back to its first year level, psychiatric hospital days appeared to decrease over time, and outpatient mental health visits increased. The inverse relationship between use of SSRIs and use of inpatient mental health services suggests the need for a cost-effectiveness analysis in this setting.     

The impact of anaemia and its treatment on employee disability and medical costs

OBJECTIVE: Anaemia is a common haematological complication of cancer and cytotoxic treatment. The incremental economic burden associated with medical care and short-term disability of anaemia in patients with malignancy and receiving chemotherapy has not been well documented. This study evaluates the effect of anaemia on the costs associated with cancer treated with chemotherapy. METHODS: Patients receiving chemotherapy within 6 months of their initial cancer diagnosis were identified in a commercial claims database for 1999-2000. Data for these individuals were linked to their employers' short-term disability records via unique encrypted personal identification numbers provided by employers. Patients with anaemia were identified by a diagnosis of anaemia or treatment with transfusion or erythropoietin alfa (EPO). Healthcare expenditure and short-term disability leave were observed for up to 6 months following initial cancer diagnosis and were summarised into monthly averages. Exponential conditional mean models and zero-inflated negative binomial models were used to analyse mean monthly healthcare expenditures and short-term disability days. RESULTS: Twenty-five percent of the 619 newly diagnosed cancer patients treated with chemotherapy had anaemia. The presence of anaemia and longer length of transfusion therapy were associated with increased expenditures, while longer length of EPO treatment was associated with lower expenditures. The incremental costs due to anaemia among patients receiving chemotherapy were US$5,538 (year 2001 values) per month in the first 6 months following cancer diagnosis, 10.8% of which were costs related to short-term disability leave. CONCLUSION: Anaemia in patients undergoing chemotherapy presents a substantial burden to employers and payers. The findings also suggest that patients with anaemia treated with erythropoietin alfa can achieve expenditure levels similar to those patients without anaemia.     

The impact of chronic obstructive pulmonary disease on long-term disability costs

OBJECTIVES: Chronic obstructive pulmonary disease (COPD) as a cause of disability with subsequent costs remains poorly recognized. The small, growing body of literature on COPD shows that it is one of the leading causes of missed work.greater than asthma or diabetes. However, much less is known about the impact of COPD on long-term disability (LTD). Because the health care burden for disabled, working-age patients will fall heavily on managed care organizations, better estimates of the economic and pharmacoeconomic costs of COPD are required. We seek to improve understanding of the burden of COPD on several national LTD programs. METHODS: We reviewed occupational health and disability literature and government statistics to determine how long-term, respiratory-related disability is addressed by disability pension programs in 8 developed countries (Canada, France, Germany, Italy, Japan, Spain, the United Kingdom, and the United States). We then applied respiratory-specific disability definitions to country-specific population and pension information to estimate the potential burden of COPD on LTD insurance programs in each country. RESULTS: Comprehensive, relevant data to evaluate respiratory-related disability are lacking. Of the study countries, only the United States has explicit respiratory specific criteria for disability eligibility, which are based solely on spirometry. We estimate that the total burden of COPD in the study countries may range from 5 billion dollars to as high as 25 billion dollars per year if all persons who met U.S. eligibility criteria for respiratory-related disability were granted compensation. CONCLUSION: The potential burden of COPD on LTD programs may be large. The lack of standard criteria for respiratory-related disability may lead to underrecognition of COPD's true potential impact. Further work is needed to develop consistent and cost-effective ways to measure the impact of COPD and to assist in disability determination for COPD patients.     

The impact of esophageal candidiasis on hospital charges and costs across patient subgroups

ABSTRACT

Objective: Assess the impact of esophageal candidiasis on US hospital inpatient charges, length of stay (LOS), and costs across clinically relevant subgroups.

Methods: Total hospital charge (THC) and LOS data extracted from the 2005 National Inpatient Sample (NIS) were compared for patients with and without esophageal candidiasis within the top 20 most commonly assigned Diagnosis Related Groups (DRGs) for the disease. Total hospital costs were estimated using hospital charges in the 2005 Medicare Provider Analysis and Review (MEDPAR) file and hospital cost-to-charge ratios published in the Center for Medicare and Medicaid Service's (CMS) 2005 Inpatient Prospective Payment System Standardization File.

Results: Across 274 DRGs, 45 727 esophageal candidiasis patients were identified. Mean age was 50.8 years; 52.5% were female, 59.3% Caucasian. Median LOS was 7 days; median THC was $25 649.

Of all esophageal candidiasis cases identified, 65% fell into the top 20 most commonly assigned DRGs. Within this subset, HIV-related DRGs accounted for 22% of the esophageal candidiasis cases. The difference in mean THC and LOS for esophageal candidiasis patients in HIV-related DRGs was not significant. However, total hospital costs were higher for esophageal candidiasis patients in this subset ($11 886 vs. $10 534, p?<?0.01). The remaining 78% of esophageal candidiasis cases were assigned to 19 non-HIV-related DRGs. Mean LOS, THC, and total hospital costs were significantly higher for esophageal candidiasis patients within these 19 non-HIV-related DRGs, (8.4 vs. 6.1; $35 704 vs. $23 874, and $10 917 vs. $7474, p?<?0.01 in all cases).

Conclusions: Esophageal candidiasis affects a wide range of patient groups; it increases LOS and total charges within non-HIV-related hospitalizations. Although the costs presented in this study are estimates, they do suggest a significant increase in cost among esophageal candidiasis cases. Future studies on treatment and preventive care strategies for esophageal candidiasis should not be limited to HIV patients, but instead performed across a wider range of disease settings.     

Analysis of the costs of NSAID-associated gastropathy. Experience in a US health maintenance organisation

Clinicians recognise nonsteroidal anti-inflammatory drugs (NSAIDs) as valuable first-line agents in the treatment of rheumatic disorders and as dangerous irritants to the gastrointestinal tract. This has led to questions about the economic impact of NSAID-induced gastropathy in populations. This study estimated the 1992 costs of NSAID-associated gastropathy episodes, and calculated an iatrogenic cost factor for NSAID-associated gastropathy among elderly members of a health maintenance organisation (HMO), the Northwest Region of Kaiser Permanente. Using data retrieved from automated databases and from medical records, NSAID and antiulcer drug costs were calculated, and estimates were made of the incidence rates of inpatient and outpatient NSAID-associated gastropathies, the services provided to treat them, and the cost of those services. Kaiser Permanente Northwest spent $US0.35 for each $US1.00 spent on NSAID therapy for the elderly, an iatrogenic cost factor of 1.35. The estimated average treatment per NSAID-associated gastropathy episode was $US2172. The average outpatient pharmacy cost per elderly NSAID user was $US80 and estimated average NSAID-associated treatment cost per elderly NSAID user was $US43. Although the findings were specific to the HMO because of the databases used, the methodology employed and the drug formulary influence on NSAID selection, they show that a substantial amount of resources were used to treat NSAID-induced gastropathies in the elderly, underscoring the risk of prescribing NSAIDs and reinforcing the need for their prudent use in elderly patients.     

小檗碱的药理研究及临床应用

小檗碱通过竞争性阻断α-肾上腺能受体增强心房收缩力,起到抗心律失常和降血压的作用;通过促进胰岛β细胞修复和增生,使胰岛素释放增加,同时抑制糖元异生,和(或)促进糖酵解,产生降血糖的作用,通过抗胃肠道粘膜细菌感染治疗溃疡性胃肠道炎。因此,小檗碱临床应用前景广泛。     

Modelling the impact of compliance on the costs and effects of long-acting risperidone in Canada

Schizophrenia is a chronic, relapsing disease that requires more healthcare resources to manage than any other single psychiatric illness. The main cost of treatment is hospitalization as a result of the exacerbation of symptoms often caused by poor compliance. Although the costs of hospitalization and relapse have been well documented, the differential effects of various medications on healthcare expenditure are still being determined. The aim of the present study was to estimate the cost effectiveness of long-acting risperidone in the treatment of high-risk, non-compliant patients with schizophrenia over a 5-year period in Canada. A discrete event model was developed comparing three scenarios, each with a different starting treatment: haloperidol depot, long-acting risperidone or oral risperidone. Second and third-line treatment options were olanzapine and clozapine, respectively, for all three scenarios. On the basis of 3000 simulated patient characteristics, the model generated individual patient histories. Outcomes included the number and duration of psychotic episodes, the cumulative Positive and Negative Syndrome Scale (PANSS) score and direct medical costs. The time horizon of the model was 5 years and a 5% discount rate was used for costs and effects. The perspective of the model was that of the Canadian healthcare system. After 5 years, treatment with long-acting risperidone saved Canada dollars 6908 and Canada dollars 13,130 (discounted) and avoided 0.28 and 0.54 relapses per patient, compared with haloperidol depot and oral risperidone, respectively. In this model, initiating treatment of high-risk, non-compliant patients with schizophrenia with long-acting risperidone was the dominant strategy. With long-acting risperidone, direct costs were lower and clinical effectiveness was greater, compared with haloperidol depot or oral risperidone, during years 4 and 5.     

基于抗小鼠惊厥和成分分析探讨僵蚕粉末入药的合理性

目的:通过抗惊厥作用和化学成分分析探讨僵蚕古代经典"粉末入药"的科学性与合理性。方法:建立戊四氮急性惊厥小鼠模型,以惊厥潜伏期、惊厥发生率、死亡潜伏期和存活率为指标评价僵蚕水煎液和粉末入药的抗惊厥作用差异;采用仿生提取法模拟粉末在胃肠环境中的溶出过程,通过干浸膏得率、蛋白类成分、白僵菌素含量和水溶性小分子成分测定,分析僵蚕古代经典"粉末入药"与现代"水煎入药"两种用药形式化学成分的差异,探讨僵蚕古代经典"粉末入药"的合理性。结果:僵蚕粉末入药对小鼠的抗惊厥作用显著强于水煎液;相比水煎液,僵蚕仿生液的干浸膏得率、蛋白含量明显增加;通过SDS-PAGE分析发现,僵蚕仿生液中蛋白类成分条带信息比水煎液明显丰富;HPLC分析结果表明,仿生液中水溶性成分组成更丰富,多数色谱峰峰面积明显增加,通过HPLC-Q-TOF-MS分析确定了其中部分成分的结构。结论:该研究证实了僵蚕古代经典"粉末入药"的科学合理性,可为僵蚕临床合理用药形式的选择提供科学依据。     

The impact of clinical pharmacy services on pneumococcal vaccine frequency and appropriateness in a family medicine clinic

ObjectiveTo evaluate the impact of an ambulatory clinical pharmacy service (inclusive of immunization needs assessments) on the frequency and appropriateness of pneumococcal vaccine administration in a family medicine clinic.MethodsThis cohort study had an observational and retrospective design and included patients who received pneumococcal vaccines at a family medicine clinic in a medically underserved area in Southwestern Pennsylvania across a 42-month period from January 1, 2015, to June 30, 2018. The outcome measures included the administration and appropriateness of pneumococcal 13-valent conjugate (PCV13) and pneumococcal 23-valent polysaccharide (PPSV23) vaccines across 3 time cohorts including before, during, and after the establishment of a clinical pharmacy service.ResultsA total of 457 pneumococcal vaccines were administered, including 198 (43.3%) PCV13 and 259 (56.7%) PPSV23, across all time cohorts. Overall vaccine administration per month increased by 143% with the introduction of a dedicated clinical pharmacy service, including a 270% increase for PCV13 and an 87% increase for PPSV23. A strong correlation was found between recommendations made and doses administered for both pneumococcal vaccines (r = 0.89; P < 0.003). Across the entire time frame, PPSV23 administrations were appropriate in more than 96% of instances, whereas the appropriateness of PCV13 administrations were statistically significantly improved after the introduction of a fully dedicated clinical pharmacy service (58.5% vs. 90.8%; P < 0.05). The appropriateness of vaccine administration remained high even after the reduction of clinical pharmacy services.ConclusionClinical pharmacy service implementation in a family medicine clinic was associated with increased pneumococcal vaccine administration and increased appropriateness of PCV13 administrations.     

Choice of NSAID and management strategy in rheumatoid arthritis and osteoarthritis. The impact on costs and outcomes in the UK

OBJECTIVE: Although nonsteroidal anti-inflammatory drugs (NSAIDs) are an effective therapy for rheumatoid arthritis, they are associated with significant adverse effects, the management of which imposes additional costs on the healthcare system. Prescribing NSAIDs which have a lower risk of major adverse effects as the first-line NSAID for patients with rheumatoid arthritis and osteoarthritis may be expected to lead to an improvement in clinical outcomes and reduce overall treatment costs. This analysis examines data from a published randomised controlled trial of 5 NSAIDs to explore these hypotheses. DESIGN AND SETTING: Data from a clinical trial comparing 5 NSAIDs were combined with published cost data to construct 2 clinical decision models, reflecting alternative approaches to the management of major and minor adverse effects in the UK. INTERVENTIONS: The 5 NSAIDs evaluated in the analysis were nabumetone, diclofenac, ibuprofen, piroxicam and naproxen, although only the results for ibuprofen and nabumetone are reported. MAIN OUTCOME MEASURES AND RESULTS: The total cost of care per patient receiving nabumetone was estimated to be between 25 pounds sterling (Pound) and 41 Pounds more expensive than ibuprofen. In a hypothetical cohort of 100,000 patients, there were between 690 and 821 more major adverse effects using ibuprofen than nabumetone. The cost per life-year gained (LYG) from using nabumetone rather than ibuprofen ranged between 1880 Pounds and 2517 Pounds (1995 values), depending upon the management of adverse effects. CONCLUSIONS: These results indicate that: (i) prescribing the newer, currently more expensive, NSAIDs will not necessarily lead to cost savings; (ii) the management of adverse effects can have a significant impact on costs; and (iii) the additional cost may be justifiable in terms of the mortality and morbidity gains associated with the new lower-risk NSAIDs.     

Economic impact of multiple sclerosis disease-modifying drugs in an employed population: direct and indirect costs*

ABSTRACT

Objective: The study objective is to compare the annual total medical and indirect costs of newly treated and untreated employees with multiple sclerosis (MS).

Research design and methods: A retrospective database analysis of employer medical, drug, and disability claims database (Ingenix Employer database, 1999–2005; 17 large US companies) was conducted for employees 18–64 years of age with ≥1 MS diagnosis after January 1, 2002. Employees with ≥1 MS disease-modifying drug (DMD) claim comprised the newly treated group; employees with MS but no DMD at any time comprised the untreated, comparison group. Index date was the day after the most recent claim (treated, DMD claim; untreated, MS claim) meeting the following requirements: continuous health coverage for 3 months before (baseline period) and 12 months after the index date (study period) and actively employed during baseline.

Main outcome measures: Total medical costs and indirect (work loss) costs over the 1-year study period (2006 $US) were compared for DMD-treated and untreated MS employees, adjusting for baseline characteristics, including comorbidities.

Results: During the baseline, MS employees who became treated (n?=?258) were younger (40.9 vs. 44.4 years, p?<?0.0001) and had a higher proportion of women (72 vs. 62%, p?=?0.007) than the untreated group of MS employees who never received DMD treatment (n?=?322). The 3-month baseline MS-related medical costs were higher among treated MS employees ($2520 vs. $1012, p?<?0.0001). There was a nonsignificant trend toward higher baseline non-MS-related medical costs in untreated versus treated MS employees. Risk-adjusted total annual medical costs ($4393 vs. $6187, p?<?0.0001) and indirect costs ($2252 vs. $3053, p?<?0.0001) were significantly lower for treated MS employees than for untreated MS employees.

Conclusions: Initiation of MS disease-modifying drugs was associated with substantial significant medical and indirect savings for employees with MS. Study findings should be considered in the context of the study limitations (e.g., analytic focus on employees with at least 12-month follow-up; lack of clinical detail on MS severity).