Is time to search the Wells Score 4.0? / ¿Ha llegado el momento de buscar la escala de Wells 4.0?

BACKGROUND: Wells score for deep vein thrombosis presents problems for implementation in the hospital emergencies, mainly due to the complexity of its enforcement. OBJECTIVE: To assess whether the inclusion of D-dimer as a predictor might lead to a simplification of this clinical decision rule. PATIENTS AND METHODS: A database of deep vein thrombosis patients was studied by logistic regression model in which the 10 predictors in the Wells score and the dimer D were included. The diagnosis was made with compression ultrasonography with Doppler signal. D-dimer was determined by a quantitative method of latex, a technique immunofiltration or a turbidimetric technique. RESULTS: 577 patients (54.1% women) were studied, with a mean age of 66.7 (14.2) years. 25.1% were diagnosed with deep vein thrombosis. Only four variables were independent, building a weighted model with greater predictive ability (area under the curve) than the original model (0.844 vs. 0.751, p<0.001). Both models showed an acceptable safety, with a similar rate of failure (0.8% vs. 1%). The simplified model allowed to select a higher percentage of patients who could have benefited from the non performance of the imaging test (20.6% vs. 15.8%, p=0.039). CONCLUSIONS: The introduction of D-dimer in a regression model simplifies the Wells score and maintain the same efficacy and safety, which could improve its implementation in the hospital emergencies.

[Referrals to a gastroenterology outpatient clinic: differences according to patients' geographical origin]. / Derivaciones a consultas de aparato digestivo: diferencias en función del medio geográfico de procedencia.

INTRODUCTION: The characteristics of users of the Spanish public health system have been evaluated in multiple studies. However, these studies usually refer to users of primary care and emergency services and less frequently to users of specialized services. Some studies have described differences according to patients' geographical origin. OBJECTIVE: To analyze the demographic profile of patients attending our gastroenterology outpatient clinic over a prolonged period. PATIENTS AND METHOD: The geographical origin, age and sex of all patients referred for an initial consultation in the gastroenterology outpatient clinic from 2001-2003 were analyzed. RESULTS: Women accounted for 53.7% of all appointments but no significant differences in referral rates were observed in comparison with men. A total of 65.5% of patients were from urban areas and the referral rate was significantly higher in these patients than in those from rural areas, although attendance rates were equal between patients from the two types of area. Referral rates increased in direct proportion with age; a predominance of referrals was observed in women aged < 74 years and in men aged 75 years or older. Some discrepancies were found among the distinct years analyzed. CONCLUSIONS: In our catchment area, demand is greater in the urban population than in the rural population. No overall differences were found in sex but significant differences were found in age and length of follow-up.

[Impact of automatized systems in a high resolution model of outpatients clinics]. / Impacto de los sistemas automatizados en un modelo de consulta de alta resolución.

OBJECTIVE: To analyse the impact of computerised systems in Radiology and Laboratory Departments on the reduction in the waiting time of the patients attending to an Internal Medicine outpatient consultation organised in a high resolution model. METHODS: For one year, we studied the delay in diagnostic explorations (laboratory test, simple radiology, ultrasonic diagnostics and brain scanner) that were all applied for and performed in a single day. We compared the traditional organization (n = 312 explorations), in which the results were handed in by hospital auxiliary staff, to a computerised method (n = 457 explorations), which was implemented via our intranet. RESULTS: The global delay decreased 10% in average, the differences being significant only for the variables "brain scanner" (12.7%) and "laboratory" (19%). The average reduction in the waiting time per patient was 11.7%, ranging from 7.8% (when only one exploration was performed) to 13.2% (when 2 explorations were carried out). The percentage of patients who needed to wait more than 3 hours to receive their results also diminished significantly. CONCLUSION: The implementation of computerised systems reduced the waiting time to receive the results of complementary explorations. However, our results were not homogeneous for the different explorations.

[Do women demand to be assisted at medical clinics more often than men?]. / Solicitan las mujeres más consultas al área médica que los hombres?

BACKGROUND: Different features of the users of the Spanish Public Health System have been previously assessed, specially in General Practice and Hospital Emergency Departments. Nevertheless, the epidemiological characteristics of those patients who attend to specialised clinics have not been so thoroughly evaluated. PATIENTS AND METHODS: The referee of the demand, the place of residence, the age and the sex of patients were all analysed for the ,first visits, at the Medical Department clinics (Internal Medicine, Cardiology, Gastroenterology, Pneumology) in our hospital, during 2002. RESULTS: A total of 7,486 demands for attention (53.3% were women) were asked for by 5,841 patients (52.8%) were women. When analysing the variable, place of residence, we find women asked for more frequently than men, in the categories of General Practice Department and age less than 60 years. Those patients coming from urban areas were more in percentage than those coming from rural areas. Whereas the, index of frequency, was higher in women than in men, however, there were no differences between urban and rural areas. CONCLUSION: In our targeted population we have observed a higher demand for medical clinics in women, though the actual demand will depend on factors such as age, place of residence and the referee.

Endocarditis por Candida parapsilosis tras antibioterapia prolongada / Endocarditis caused by Candida parapsilosis after prolonged antibiotic therapy

Un varón de 48 años fue diagnosticado de endocarditis por Candida Parapsilosis sobre la válvula aórtica previamente sana; cuatro meses antes había precisado antibioterapia endovenosa prolongada y nutrición parenteral total. El cuadro debutó con isquemia arterial aguda de ambas extremidades inferiores y, posteriormente, se diagnosticó la endocarditis mediante ecocardiografía y estudio microbiológico. A pesar de que se instauró tratamiento antifúngico específico, y se realizaron embolectomía y sustitución valvular aórtica, fue imposible controlar la candidemia, falleciendo el enfermo días más tarde. La endocarditis infecciosa sigue siendo una enfermedad grave, cuyo pronóstico ha mejorado globalmente en los últimos años. Sin embargo, paralelamente asistimos a una creciente incidencia de endocarditis nosocomiales fúngicas debido a que una utilización inadecuada de las tecnologías más sofisticadas puede favorecer el crecimiento de gérmenes oportunistas multirresistentes (AU)

[Candida parapsilosis endocarditis after prolonged antibiotic therapy]. / Endocarditis por Candida parapsilosis tras antibioterapia prolongada.

Infective endocarditis is still a very serious disease whose prognosis has improved in recent years, even though advanced technologies have brought a greater number of cases attributable to increased growth of fungi in more virulent forms. We describe a case of endocarditis caused by Candida parapsilosis on a previously healthy aortic valve in a man who had received prolonged intravenous antibiotic treatment a few months earlier. The initial presentation included acute arterial ischaemia of the lower limbs. The diagnosis of endocarditis was then confirmed by echocardiography and microbiology. Specific antifungal therapy was started, and embolectomy and valve replacement were performed; however, the infection could not be controlled and the patient died a few days later.

[Therapeutic approaches in symptomatic hypertrophic obstructive cardiomyopathy]. / Estrategias terapéuticas en la miocardiopatía hipertrófica obstructiva sintomática.

Hypertrophic cardiomyopathy is a complex and heterogeneous disease. Although most patients experience just a few symptoms, and have a good prognosis, there are others whose symptoms are severe and progressive, determined by different pathophysiological elements such as diastolic dysfunction, myocardial ischemia, arrhythmias and subaortic obstruction. Approximately 20-30% of hypertrophic cardiomyopathy patients develop an intraventricular dynamic gradient, which in some cases, is responsible for severe symptoms which are ameliorated once the obstruction is reduced. In many cases the symptoms can be controlled with medical treatment which includes betablockers, calcium-channel antagonists and dysopiramide, but some patients will still experience severe and refractory symptoms. This subgroup of patients, which represent approximately 5-10% of patients with hypertrophic cardiomyopathy, can be problematic from a management perspective. For many years, septal myectomy and/or mitral valve replacement offered the only effective alternative therapy for these patients. However, the high rates of morbidity and mortality associated with these procedures have necessitated the search for new and less invasive procedures such as ventricular pacing and percutaneous septal ablation. Although the initial results with sequential pacing were encouraging, further studies have suggested a significant placebo effect, which makes its application controversial. In the last 5 years selective embolization of the septal artery precipitating a localized myocardial infarction has been utilized to reduce the subaortic gradient. The potential indications and efficacy of these new forms of treatment, like ventricular pacing and percutaneous septal ablation, are presently under evaluation and are the main subject of this review. Medical treatment, with either beta-blockers, calcium channel antagonists or dysopiramide constitutes the first therapeutic step. Surgery, while alleviating the subaortic obstruction and reducing the intraventicular pressure and mitral insufficiency, produces important and long-lasting symptomatic and functional improvement in most of these patients, and it continues to be an important therapeutic alternative in these cases. If the first results with sequential pacemaker implants were encouraging, today it is alluded to an important placebo effect that causes its application to be controversial. In the last 5 years the path has been made in the creation of a septal infarction located through the embolization of the septal branches to reduce the gradient.