PMCC PMCC

Search tips
Search criteria

Advanced
Results 1-7 (7)
 

Clipboard (0)
None
Journals
Authors
more »
Year of Publication
Document Types
1.  Which patients are prescribed inhaled anti-asthma drugs? 
Thorax  1994;49(11):1090-1095.
BACKGROUND--Prescribing rates for inhaled anti-asthmatic drugs in the UK vary considerably from area to area and between individual practices. The objectives of this study were to determine the prevalence of patients prescribed inhaled steroids and beta agonist bronchodilators, the indications for these prescriptions, and to relate prescribing to the recorded levels of morbidity for specific respiratory disease. METHODS--Anonymised patient-specific prescription and diagnostic data were extracted from computerised general practice records for the 41 practices in the Northern region (total population 330,749) whose data had been validated for inclusion in a research databank. Patients were included if they were either prescribed an inhaled steroid or bronchodilator during a 12 month period, or had a recorded diagnosis of asthma, bronchitis or chronic obstructive pulmonary disease. Prescribing of inhalers per 1000 population was determined within age, sex, and diagnostic groups. Respiratory diagnosis rates within different patient groups were used to measure the underlying level of morbidity in the population. RESULTS--Inhaled anti-asthma drugs were prescribed for 5% of the study population. Prescribing prevalences peaked at ages 5-14 (steroids 40 per 1000 population; bronchodilators 68 per 1000) and at ages 65-74 (steroids 53 per 1000; bronchodilators 79 per 1000). Prescribing frequency for both drugs increased from two or three items per patient annually at age 0-14 to about six in the over 65 age group. Of the 39,424 respiratory patients 38% received inhalers and 7% only non-inhaler medication. Inhaler therapy was used in only 6% of patients with bronchitis, but in 66% of those with asthma, though the proportions varied with patient age and gender. Study practices differed in their overall levels of both inhaler prescribing and respiratory diagnosis, and had lower prescribing patterns of these drugs than other practices in the Northern region. CONCLUSIONS--Inhaled steroid and bronchodilator prescribing have age-related and gender-related prevalences. Treatment for respiratory diagnoses varies with patient age and gender, and with the diagnosis. Prescribing differences between practices are attributable to variation in both diagnostic rates for respiratory disease and therapeutic intervention patterns. For asthma patients study practices show consensus in approach, perhaps illustrating the value of clear guidelines for asthma prescribing.
Images
PMCID: PMC475267  PMID: 7831622
2.  'Tactile sensation': a new clinical sign during fine needle aspiration of breast lumps. 
The tactile sensation (TS) felt during fine needle aspiration (FNA) of symptomatic breast abnormalities was recorded prospectively in 169 patients. TS was classified as malignant (if 'gritty'), or benign (if 'rubbery', 'soft' or 'fibrous'). This assessment was compared with fine needle aspiration cytology (FNAC) and the final diagnosis, to evaluate the clinical utility of TS. A 'gritty' TS was recorded in 55/59 cancers and 22/110 benign lesions (sensitivity 93.2%, specificity 80%). Comparison of TS and FNAC in 69 patients with definitive histopathology revealed complementary results (TS, sensitivity 88.9%, specificity 48.5%; FNAC, sensitivity 55.6%, specificity 100%). Combining the sensitivity of TS with that of FNAC increased the overall sensitivity to 97.2%. Recording TS during FNA of symptomatic breast lumps enhances diagnosis, and alerts the clinician to the possibility of an underlying carcinoma when FNAC fails to confirm malignancy.
PMCID: PMC2502213  PMID: 8154809
3.  Medical marriages. 
BMJ : British Medical Journal  1994;309(6970):1673.
PMCID: PMC2542659  PMID: 7819978
4.  Is travel prophylaxis worth while? Economic appraisal of prophylactic measures against malaria, hepatitis A, and typhoid in travellers. 
BMJ : British Medical Journal  1994;309(6959):918-922.
OBJECTIVES--To estimate the costs and benefits of prophylaxis against travel acquired malaria, typhoid fever, and hepatitis A in United Kingdom residents during 1991. DESIGN--Retrospective analysis of national epidemiological and economic data. MAIN OUTCOME MEASURES--Incidence of travel associated infections in susceptible United Kingdom residents per visit; costs of prophylaxis provision from historical data; benefits to the health sector, community, and individuals in terms of avoided morbidity and mortality based on hospital and community costs of disease. RESULTS--The high incidence of imported malaria (0.70%) and the low costs of providing chemoprophylaxis resulted in a cost-benefit ratio of 0.19 for chloroquine and proguanil and 0.57 for a regimen containing mefloquine. Hepatitis A infection occurred in 0.05% of visits and the cost of prophylaxis invariably exceeded the benefits for immunoglobulin (cost-benefit ratio 5.8) and inactivated hepatitis A vaccine (cost-benefit ratio 15.8). Similarly, low incidence of typhoid (0.02%) and its high cost gave whole cell killed, polysaccharide Vi, and oral Ty 21a typhoid vaccines cost-benefit ratios of 18.1, 18.0, and 22.0 respectively. CONCLUSIONS--Fewer than one third of travellers receive vaccines but the total cost of providing typhoid and hepatitis A prophylaxis of 25.8m pounds is significantly higher than the treatment costs to the NHS (1.03m pounds) of cases avoided by prophylaxis. Neither hepatitis A prophylaxis nor typhoid prophylaxis is cost effective, but costs of treating malaria greatly exceed costs of chemoprophylaxis, which is therefore highly cost effective.
PMCID: PMC2541147  PMID: 7726905
5.  Inactivation of a Cdk2 inhibitor during interleukin 2-induced proliferation of human T lymphocytes. 
Molecular and Cellular Biology  1994;14(7):4889-4901.
Peripheral blood T lymphocytes require two sequential mitogenic signals to reenter the cell cycle from their natural, quiescent state. One signal is provided by stimulation of the T-cell antigen receptor, and this induces the synthesis of both cyclins and cyclin-dependent kinases (CDKs) that are necessary for progression through G1. Antigen receptor stimulation alone, however, is insufficient to promote activation of G1 cyclin-Cdk2 complexes. This is because quiescent lymphocytes contain an inhibitor of Cdk2 that binds directly to this kinase and prevents its activation by cyclins. The second mitogenic signal, which can be provided by the cytokine interleukin 2, leads to inactivation of this inhibitor, thereby allowing Cdk2 activation and progression into S phase. Enrichment of the Cdk2 inhibitor from G1 lymphocytes by cyclin-CDK affinity chromatography indicates that it may be p27Kip1. These observations show how sequentially acting mitogenic signals can combine to promote activation of cell cycle proteins and thereby cause cell proliferation to start. CDK inhibitors have been shown previously to be induced by signals that negatively regulate cell proliferation. Our new observations show that similar proteins are down-regulated by positively acting signals, such as interleukin 2. This finding suggests that both positive and negative growth signals converge on common targets which are regulators of G1 cyclin-CDK complexes. Inactivation of G1 cyclin-CDK inhibitors by mitogenic growth factors may be one biochemical pathway underlying cell cycle commitment at the restriction point in G1.
Images
PMCID: PMC358861  PMID: 7516474
7.  Tetanus in a parenteral drug abuser: report of a case. 
Tetanus is an infection caused by Clostridium tetani. In the United States, tetanus remains a significant problem primarily among nonimmunized or inadequately immunized individuals. This article reports a fatal case of tetanus that occurred in a 45-year-old parenteral drug abuser who presented to Harlem Hospital Center with nuchal rigidity, trismus, dysphagia, and spasms of the pectoralis musculature. Multiple cutaneous ulcerations also were observed. Despite aggressive measures that included: endotracheal intubation, administration of human tetanus, hyperimmune globulin, tetanus toxoid, and intravenous penicillin, the patient rapidly deteriorated and manifestations of heightened sympathetic nervous system activity, seizures, and cardiac arrest ensued. The diagnosis of tetanus must be based upon clinical grounds. Clinicians must remain aware of the possibility of tetanus, especially among drug abusers who also are more likely to be evaluated for complications of human immunodeficiency viral infection, which in some cases may mimic tetanus or make the diagnosis more difficult to establish.
PMCID: PMC2568180  PMID: 8189456

Results 1-7 (7)