RESUMEN
INTRODUCTION: Our goal was to perform a systematic review of the literature on the use of intravenous lidocaine in adults for status epilepticus (SE) and refractory status epilepticus (RSE) to determine its impact on seizure control. METHODS: All articles from MEDLINE, BIOSIS, EMBASE, Global Health, HealthStar, Scopus, Cochrane Library, the International Clinical Trials Registry Platform (inception to November 2014), and gray literature were searched. The strength of evidence was adjudicated using both the Oxford and GRADE methodology by two independent reviewers. RESULTS: Overall, 13 studies were identified, with 11 manuscripts and 2 meeting abstracts. Seventy-six adult patients were treated for 82 episodes of SE/RSE. Patients had varying numbers of anti-epileptic drugs (AEDs), 1-12, on board prior to lidocaine therapy. During 69 of the 82 (84.1%) episodes of SE/RSE, phenytoin was on board. The dose regimen of lidocaine varied, with some utilizing bolus dosing alone; others utilizing a combination of bolus and infusion therapy. Overall, 70.7% of seizures responded to lidocaine, with complete cessation and greater than 50% reduction seen in 64.1% and 6.1% respectively. Patient outcomes were sparingly reported. CONCLUSIONS: There currently exists level 4, GRADE C evidence to support the consideration of lidocaine for SE and RSE in the adult population. Thus there is currently weak evidence to support the use of lidocaine in this context. Further prospective studies of lidocaine administration in this setting are warranted.
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Anticonvulsivantes/uso terapéutico , Lidocaína/uso terapéutico , Estado Epiléptico/tratamiento farmacológico , Adulto , Anticonvulsivantes/efectos adversos , Humanos , Lidocaína/efectos adversos , Convulsiones/tratamiento farmacológico , Convulsiones/fisiopatología , Estado Epiléptico/fisiopatologíaRESUMEN
BACKGROUND: Our goal was to perform a systematic review of the literature on the insertion of vagal nerve stimulators (VNS) for refractory status epilepticus (RSE) and its impact on the control of RSE. METHODS: All articles from MEDLINE, BIOSIS, EMBASE, Global Health, HealthStar, Scopus, Cochrane Library, the International Clinical Trials Registry Platform, clinicaltrials.gov (inception to June 2014), reference lists of relevant articles, and gray literature were searched. The strength of evidence was adjudicated using both the Oxford and GRADE methodology by two independent reviewers (FZ and MW). RESULTS: Overall, 17 studies were identified, with 7 manuscripts and 10 meeting abstracts. A total of 28 patients were treated. In those with generalized RSE, 76% displayed cessation of RSE with VNS insertion. In cases of focal RSE, 25% responded to VNS insertion. Few adverse effects related to VNS insertion were described. CONCLUSIONS: We currently cannot recommend the use of VNS for RSE. Oxford level 4, GRADE D evidence exists to suggest improvement in seizure control with the use of urgent VNS in generalized RSE. No comments can be made on the utility of VNS in focal RSE. Further prospective study is warranted.
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Estado Epiléptico/terapia , Estimulación del Nervio Vago/métodos , HumanosRESUMEN
The global shortage of organs for transplantation and the development of new and better medical technologies for organ preservation have resulted in a renewed interest in non-heart-beating donation (NHBD). This article discusses ethical questions related to controlled and uncontrolled NHBD. It argues that certain preparative measures, such as giving anticoagulants, should be acceptable before patients are dead, but when they have passed a point where further curative treatment is futile, they are in the process of dying and they are unconscious. Furthermore, the article discusses consequences of technological developments based on improvement of a chest compression apparatus used today to make mechanical heart resuscitation. Such technological development can be used to transform cases of non-controlled NHBD to controlled NHBD. In our view, this is a step forward since the ethical difficulties related to controlled NHBD are easier to solve than those related to non-controlled NHBD. However, such technological developments also evoke other ethical questions.
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Paro Cardíaco , Trasplante de Corazón , Donantes de Tejidos/ética , Recolección de Tejidos y Órganos/ética , Obtención de Tejidos y Órganos/ética , Toma de Decisiones/ética , Ética Clínica , Familia/psicología , Femenino , Humanos , Consentimiento Informado/legislación & jurisprudencia , Masculino , Preservación de Órganos/métodos , Factores de TiempoRESUMEN
OBJECTIVES: To investigate prognostic factors for long-term outcome of patients after inpatient withdrawal because of drug-induced chronic daily headache. PROCEDURES: Fifty-five patients (36 females) were re-examined by means of a standardized interview after inpatient withdrawal. The mean observation period was 9.28 +/- 2.85 years (mean +/- SD; median 8.58; range 5.00-13.50). RESULTS: Five years after withdrawal, one-third of the patients (34.6%) had an overall favourable outcome, one-third (32.7%) had no recurrent drug overuse and reported a clear-cut improvement of headache, and one-third (32.7%) developed recurrent drug overuse. Most relapses occurred within 2 years, and a small percentage within 5 years. No predictors for long-term outcome after inpatient withdrawal were found. CONCLUSIONS: All patients with drug-induced chronic daily headache should be considered as good candidates for inpatient withdrawal, and no patient should be excluded from that therapy.
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Trastornos de Cefalalgia , Evaluación de Resultado en la Atención de Salud/estadística & datos numéricos , Adulto , Anciano , Anciano de 80 o más Años , Femenino , Estudios de Seguimiento , Trastornos de Cefalalgia/fisiopatología , Trastornos de Cefalalgia/terapia , Humanos , Masculino , Persona de Mediana Edad , Pronóstico , Modelos de Riesgos Proporcionales , RecurrenciaRESUMEN
BACKGROUND: Ventilator-associated pneumonia rates in the medical-surgical intensive care unit first exceeded the 90th percentile in September 1997 and were significantly (P <.05) higher than National Nosocomial Infections Surveillance System pooled mean data. In January 1998, a multidisciplinary "Critical Care Bug Team" was developed by the Infection Control Committee to review 1997 National Nosocomial Infections Surveillance System data for four adult intensive care units in a 583-bed tertiary care hospital. METHODS: Membership included clinical nurse specialists, a dietitian, a pharmacist, a respiratory therapist, an infection control professional, a research specialist, and a physician adviser. Having the team report directly to the hospital's Infection Control and Adult Critical Care Committees maximized support for recommendations and provided a direct link from patient care to hospital administration. By identifying issues, evaluating patient care processes, performing literature searches, and monitoring compliance, the team implemented numerous interventions, including policy and procedure changes, purchasing of equipment, and implementation of various education tools. RESULTS: Each member of the Critical Care Bug Team contributed to a synergized effort that may have produced the desired outcome of decreasing ventilator-associated pneumonia rates. Except for August 1998, ventilator-associated pneumonia rates have been below the 75th percentile since May 1998. CONCLUSION: This study illustrates the effectiveness of a multidisciplinary team approach devised to reduce and stabilize ventilator-associated pneumonia rates in a medical-surgical intensive care unit.
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Cuidados Críticos/organización & administración , Infección Hospitalaria/etiología , Infección Hospitalaria/prevención & control , Control de Infecciones/organización & administración , Grupo de Atención al Paciente/organización & administración , Neumonía/etiología , Neumonía/prevención & control , Respiración Artificial/efectos adversos , Adulto , Infección Hospitalaria/epidemiología , Georgia , Hospitales Universitarios , Humanos , Unidades de Cuidados Intensivos , Innovación Organizacional , Política Organizacional , Evaluación de Procesos y Resultados en Atención de Salud/organización & administración , Personal de Hospital/educación , Neumonía/epidemiología , Vigilancia de la Población , Desarrollo de Programa , Evaluación de Programas y Proyectos de Salud , Factores de RiesgoRESUMEN
OBJECTIVE: To investigate the effects of vaccinations and steroids on disease progression and mood in patients with multiple sclerosis (MS). MATERIAL AND METHODS: Twenty-three patients with clinically definite MS were questioned with respect to vaccination history and the cumulative dose of steroids given during their life-time. EDSS scores and MRI scans of the brain were obtained and used to quantify clinical and MRI disease progression. Mood was assessed by using a self-estimated adjective mood scale. RESULTS: The number of vaccinations showed no effect on disease progression or mood. High cumulative steroid doses were associated with rapid MRI disease progression and the number of supratentorial MRI lesions. The absence of band-like MRI lesions was correlated with rapid clinical and MRI disease progression. Self-estimated mood tended to be worse in patients with chronic-progressive MS compared to those with relapsing-remitting MS. CONCLUSION: Neither clinical nor MRI-documented disease progression nor mood are influenced by the total number of vaccinations whereas high cumulative steroid doses and the absence of band-like MRI lesions indicate rapidly progressive MS. Self-estimated mood tends to be worse in patients with chronic-progressive MS compared to patients with relapsing-remitting MS.
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Afecto , Inmunoterapia/estadística & datos numéricos , Esclerosis Múltiple/diagnóstico , Esteroides/administración & dosificación , Adulto , Progresión de la Enfermedad , Femenino , Humanos , Esquemas de Inmunización , Inyecciones Intravenosas , Masculino , Persona de Mediana Edad , Índice de Severidad de la Enfermedad , Encuestas y CuestionariosRESUMEN
PURPOSE: To study cardiac alterations (changes in heart rate and cardiac arrhythmias) at the transition from the pre-ictal to the ictal state during focal epileptic seizures. METHODS: We assessed ECG changes during 92 seizures recorded with scalp EEG in 30 patients and 35 seizures in 11 patients evaluated with subdural strip and/or grid electrodes. Consecutive RR intervals were analyzed with a newly developed mathematical model for a total of 90 seconds (60 seconds pre-ictal, 30 seconds ictal). RESULTS: We found an ictal tachycardia (heart rate increase > 10 bpm) in 82.5% of seizures, and an ictal bradycardia (heart rate decrease > 10 bpm) in 3.3% of seizures. Bradycardia was only observed in seizures of frontal lobe origin. Heart rate changes occurred several seconds prior to EEG seizure onset on scalp-EEG in 76.1% of seizures, but also prior to EEG seizure onset on invasive EEG in 45.7% of seizures. Early tachycardia occurred significantly more often in temporal than in frontal lobe origin seizures. We found no significant effect of the side of seizure onset on both the quality and quantity of ictal heart rate changes. The occurrence of an aura or of awakening prior to the seizure had no influence on peri-ictal heart rate changes. Low risk cardiac arrhythmias were more frequently observed in frontal lobe origin seizures. CONCLUSIONS: Epileptic discharges directly influence portions of the central autonomic network, within a brain area too small or too deep to be detected on EEG, most likely deep mesial structures such as the amygdala or portions of the hippocampus. The potential clinical applications of our results include (1) automatic seizure detection, (2) differentiation between seizures of temporal and frontal lobe origin, (3) detection of peri-ictal cardiac arrhythmias, and (4) clarification of SUDS (sudden unexplained death syndrome) in epilepsy.
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Enfermedades del Sistema Nervioso Autónomo/fisiopatología , Epilepsia/fisiopatología , Frecuencia Cardíaca/fisiología , Adulto , Enfermedades del Sistema Nervioso Autónomo/complicaciones , Bradicardia/etiología , Epilepsia/complicaciones , Femenino , Humanos , Masculino , Persona de Mediana Edad , Estudios Retrospectivos , Convulsiones/fisiopatología , Nodo Sinoatrial/fisiopatología , Taquicardia/etiologíaRESUMEN
Moderately elevated plasma homocysteine levels have been established as an independent risk factor for atherosclerosis and its complications, including cerebrovascular disease. A common mutation (C677T) in the gene encoding for the enzyme methylenetetrahydrofolate reductase (MTHFR) has been linked to increased plasma homocysteine levels in homozygous carriers, particularly in the presence of low folate levels. However, the results of most of the previous studies suggest that the C677T MTHFR mutation is not a significant risk factor for arterial disease. This discrepancy might, at least partly, be due to the fact that plasma homocysteine levels are influenced by several other factors, including age, gender, renal function, and vitamin status. We investigated the relation between plasma homocysteine levels, the C677T MTHFR mutation, and these other factors in a population of 96 patients with transient ischemic attacks or minor strokes and in 96 age- and sex-matched healthy control subjects. We further tested the value of a multivariate model for the prediction of plasma homocysteine levels under particular consideration of the MTHFR mutation status. In the patients, plasma homocysteine levels were significantly higher than in the healthy control subjects. With regard to the MTHFR mutation, the distribution of the C/C, C/T, and T/T genotypes was not significantly different between patients and healthy control subjects. Univariate (linear regression) analysis revealed significant (positive) correlations between plasma homocysteine levels on the one hand and age and creatinine on the other, the latter particularly in subjects with creatinine levels in the upper quartile. Significant (negative) correlations were found between plasma homocysteine levels, vitamin B12, and folate levels. However, these relations could much better be expressed by means of a multiplicative regression model. T/T subjects exhibited slightly higher homocysteine levels than C/C and C/T subjects; however, the differences between the 3 genotypes were not significant. Multivariate (stepwise regression) analysis revealed age, vitamin B12 levels, folate levels, and creatinine levels as significant independent variables influencing plasma homocysteine levels, whereas the MTHFR mutation status and gender were removed from the model. Considering all 192 subjects, only 28.8% of the variance of plasma homocysteine levels could be accounted for by the model. However, in homozygous carriers of the MTHFR mutation, the predictive power of the model is very high, explaining 76.1% of the variance of plasma homocysteine levels. According to our results, the C677T mutation does not constitute a major risk factor for transient ischemic attack or minor stroke, even under consideration of other possibly confounding factors that are known to affect plasma homocysteine levels. However, it is possible to predict plasma homocysteine levels in homozygous carriers of the mutation with high accuracy. The knowledge of the MTHFR mutation status may therefore help to identify subjects at high risk for hyperhomocysteinemia.
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Homocisteína/sangre , Ataque Isquémico Transitorio/genética , Adulto , Anciano , Anciano de 80 o más Años , Análisis de Varianza , Femenino , Ácido Fólico/sangre , Genotipo , Humanos , Ataque Isquémico Transitorio/sangre , Ataque Isquémico Transitorio/enzimología , Masculino , Metilenotetrahidrofolato Reductasa (NADPH2) , Persona de Mediana Edad , Mutación , Oxidorreductasas actuantes sobre Donantes de Grupo CH-NH/genética , Vitamina B 12/sangreRESUMEN
A common C677T mutation in the gene for the enzyme 5,10-methylenetetrahydrofolate reductase (5,10-MTHFR) has been linked to elevated levels of homocysteine and was therefore suspected to be a candidate genetic risk factor for arterial occlusive disease. Another mutation, factor V Leiden, has been established as a common hereditary risk factor for venous thrombosis, but its role in arterial disease remains controversial. We investigated the prevalence of both the C677T MTHFR mutation and the factor V Leiden mutation in 81 patients with transient ischemic attack (TIA) or minor stroke (MS) and in 81 age- and sex-matched control subjects free from clinically manifest vascular disease. We further compared clinical and laboratory data as well as clinical course of patients carrying the factor V Leiden mutation alone or in combination with the C677T MTHFR mutation and mutation-free patients. The prevalence of the MTHFR mutation did not differ between patients and control subjects with 11.1% homozygous carriers in both groups (OR for homozygous carriers 1.0; 95% CI 0.38-2.66). However, there was a trend towards a higher prevalence of carriers of factor V Leiden in patients (12.3%) than in control subjects (4.9%) (OR 2.75; 95% CI 0.83-9.17;p=0.09). Furthermore, we found some evidence that the combined occurrence of the C677T MTHFR mutation and factor V Leiden might unfavorably affect the clinical course of the disease, but the number of respective patients was small. Larger studies with a greater number of carriers of both the C677T MTHFR mutation and factor V Leiden seem therefore warranted.
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Trastornos Cerebrovasculares/genética , Factor V/genética , Ataque Isquémico Transitorio/genética , Mutación Puntual , Tetrahidrofolatos/genética , Adulto , Anciano , Anciano de 80 o más Años , Análisis de Varianza , Estudios de Casos y Controles , Femenino , Homocisteína/sangre , Humanos , Masculino , Persona de Mediana Edad , Factores de RiesgoRESUMEN
We report postictal nose wiping as a postictal symptom of localizing and lateralizing significance in focal epilepsy. We reviewed videotapes of 444 focal seizures in 101 patients who underwent prolonged video and EEG monitoring during presurgical epilepsy evaluation, and observed postictal nose wiping in 51.3% of 76 patients with temporal lobe epilepsy. The hand used to perform postictal nose wiping was ipsilateral to the side of seizure origin in 86.5% of all seizures and in 97.3% of all patients. We conclude that postictal nose wiping is a common, easily assessed symptom after focal seizures of temporal lobe origin that provides reliable lateralizing information on the side of seizure onset.
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Epilepsia del Lóbulo Temporal/diagnóstico , Epilepsia del Lóbulo Temporal/fisiopatología , Lateralidad Funcional , Movimiento , Adolescente , Adulto , Electroencefalografía , Femenino , Mano , Humanos , Masculino , Persona de Mediana Edad , Nariz , Grabación de Cinta de VideoRESUMEN
UNLABELLED: Epileptic seizures are followed by dynamic alterations in neurologic function in the postictal period which have received little attention by clinicians over a long period of time. We therefore retrospectively studied videotapes of 160 patients with focal epilepsy who underwent presurgical evaluation, for the occurrence of postictal symptoms to determine whether these phenomena have any localizing or lateralizing value in defining the seizure onset zone. RESULTS: (1) We found postictal paresis in 22 of 160 patients (18.8%) in each case contralateral to the hemisphere of seizure onset. (2) 'Perservative' automatisms which start during the ictus and continue in the postictal period occurred in 25.2% of 135 patients with temporal lobe epilepsy but not in patients with frontal lobe epilepsy. (3) Sexual automatisms defined as manipulations of the genitals were found exclusively in patients with temporal lobe epilepsy (in 5.9% of 135 patients). (4) Postictal 'Nose-wiping' was evident in 51.3% of 76 temporal lobe epilepsy patients but only in 12.0% of 25 extratemporal lobe epilepsy patients and was performed with the hand ipsilateral to the hemisphere of seizure onset in 86.5% of all temporal lobe seizures. (5) Postictal language disturbances were observed only in patients with temporal lobe epilepsy (34% of 97 patients) and pointed to a seizure onset in the dominant hemisphere in 80.8%. We conclude that postictal phenomena can provide reliable information for the localization of the seizure onset zone in patients with complex partial seizures. Thus, more attention should be given to the postictal state during presurgical epilepsy monitoring.
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Epilepsias Parciales/diagnóstico , Examen Neurológico , Afasia/diagnóstico , Afasia/fisiopatología , Afasia/cirugía , Automatismo/diagnóstico , Automatismo/fisiopatología , Automatismo/cirugía , Mapeo Encefálico , Corteza Cerebral/fisiopatología , Corteza Cerebral/cirugía , Dominancia Cerebral/fisiología , Electroencefalografía , Epilepsias Parciales/fisiopatología , Epilepsias Parciales/cirugía , Epilepsia Parcial Compleja/diagnóstico , Epilepsia Parcial Compleja/fisiopatología , Epilepsia Parcial Compleja/cirugía , Epilepsia del Lóbulo Temporal/diagnóstico , Epilepsia del Lóbulo Temporal/fisiopatología , Epilepsia del Lóbulo Temporal/cirugía , Humanos , Estudios Retrospectivos , Conducta Estereotipada/fisiología , Grabación de Cinta de VideoRESUMEN
The aim of this study was to elucidate possible electrocardiographic effects of sumatriptan in a selected group of patients with severe headache requiring in-patient treatment. The patients (n = 21) were treated with sumatriptan in addition to various other compounds and were asked to record any symptoms following the administration of sumatriptan. In addition, Holter monitoring was performed in all subjects. In agreement with other studies, the adverse events reported by the patients were not related to ECG changes and, vice versa, ECG changes were not accompanied by clinical symptoms. The Holter findings before and after administration of sumatriptan were significantly different in three patients, i.e. recurrent episodes of ST depression and increase in extrasystoles. These changes occurred within a period of 1.45 to 18 hours and were not reproducible when Holter monitoring was repeated without sumatriptan. Even though the findings might be explained by spontaneous variability of Holter monitoring or other factors, this study does not definitely discount the possibility that sumatriptan may cause ST segment changes and increase pre-existing extrasystoles. Controlled studies are required to clarify this issue.
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Arritmias Cardíacas/inducido químicamente , Cefalalgia Histamínica/tratamiento farmacológico , Electrocardiografía Ambulatoria/efectos de los fármacos , Trastornos Migrañosos/tratamiento farmacológico , Agonistas de Receptores de Serotonina/efectos adversos , Sumatriptán/efectos adversos , Adulto , Anciano , Arritmias Cardíacas/diagnóstico , Femenino , Humanos , Masculino , Persona de Mediana Edad , Agonistas de Receptores de Serotonina/uso terapéutico , Sumatriptán/uso terapéuticoRESUMEN
It was the aim of this study to determine the associations of clinical and laboratory data with plasma homocyst(e)ine levels in patients with transient ischemic attack (TIA) or minor stroke (MS), with special reference to their 677C to T mutation status in the 5,10-methylenetetrahydrofolate reductase (5,10-MTHFR) gene. Seventy-six patients with TIA or MS were investigated at least 3 months after their (last) clinical event. By means of univariate analysis, significant correlations of homocyst(e)ine levels with male gender (P<0.02), age (P<0.0005), creatinine levels (P<0.0002), folate levels (inversely, P<0.05), and alcohol use (P<0.02) were found, but not with vitamin B12 levels. Multivariate regression analysis, including age, creatinine levels, and folate levels as independent variables, revealed age (P<0.01) and creatinine levels (P<0.02) to be significantly correlated with homocyst(e)ine levels. After adjustment for age, creatinine levels and homocyst(e)ine levels remained significantly correlated to each other (P<0.005), whereas the relation between folate levels and homocyst(e)ine levels was no longer significant (P=0.10). Mutation-positive patients exhibited moderately and statistically non-significantly higher homocyst(e)ine levels than mutation-negative patients, particularly those who were homozygous positive. Homocyst(e)ine levels were closely correlated with creatinine levels (P<0.0002) and with folate levels (inversely, P<0.05), but only in mutation-positive and not in mutation-negative patients. Homozygous positive, heterozygous positive, and mutation-negative patients did not differ with respect to clinical and laboratory data concerning 'risk factors for stroke' or co-existing vascular disease. In conclusion, the associations of creatinine levels and, inversely, of folate levels with plasma homocyst(e)ine levels in patients with TIA or MS are dependent on the 5,10-MTHFR mutation status. Significant correlations between these variables were found only in mutation-positive but not in mutation-negative patients.
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Trastornos Cerebrovasculares/genética , Homocisteína/sangre , Ataque Isquémico Transitorio/genética , Mutación/fisiología , Oxidorreductasas/genética , 5,10-Metilenotetrahidrofolato Reductasa (FADH2) , Adulto , Anciano , Anciano de 80 o más Años , Análisis de Varianza , Trastornos Cerebrovasculares/sangre , Trastornos Cerebrovasculares/enzimología , Femenino , Ácido Fólico/sangre , Humanos , Ataque Isquémico Transitorio/sangre , Ataque Isquémico Transitorio/enzimología , Masculino , Metilenotetrahidrofolato Reductasa (NADPH2) , Persona de Mediana Edad , Factores de Riesgo , Vitamina B 12/sangreRESUMEN
BACKGROUND AND PURPOSE: Experimental studies suggest a beneficial effect of hemodilution on acute ischemic stroke. This was not proven by previous multicenter trials in the clinical setting. Various reasons have been suggested for the failure of these studies, which we attempted to consider in the Multicenter Austrian Hemodilution Stroke Trial (MAHST). METHODS: MAHST is a randomized, double-blind, placebo-controlled study of hypervolemic hemodilution (HHD) within 6 hours of a clinically first ischemic stroke localized in the middle cerebral artery territory. The treatment consisted of 10% hydroxyethyl starch 200/0.5 (HES) and was tested against pure rehydration with Ringer's lactate over a period of 5 days. Our primary outcome measure was clinical improvement within 7 days as measured by the Graded Neurologic Scale (GNS). We performed an adaptive interim analysis to reevaluate the study goal after entering half of the projected number of patients (n = 200). At least 600 patients per group would have been required for significant results, and therefore we decided to terminate the trial. RESULTS: Ninety-eight patients received HHD and 102 patients placebo. The baseline characteristics were comparable between both groups. In the HHD group the absolute reduction of the hematocrit was 2.5% on day 2 with a maximum of 3.7% on day 5, which compares with a reduction in the placebo group of 1% and 1.9%, respectively. Intention-to-treat analysis showed no significant difference of the change of the GNS scores between HHD-treated (median, -8.5; 95% confidence interval, -14.2 to -4.0) and placebo-treated patients (median, -6.0; 95% confidence interval, -11.0 to 0.0) on day 7, and GNS scores remained similar in both treatment groups throughout the trial. At 3 months, slightly more HHD patients showed complete independence on the Barthel Index (28 versus 24), and fewer HHD than placebo patients had died (13 versus 17), but these differences were not statistically significant. HHD treatment was not associated with any specific adverse event. CONCLUSIONS: Mild HHD is safe but failed to demonstrate a significant beneficial effect over the pure rehydration regimen in patients with acute ischemic stroke.
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Hemodilución , Ataque Isquémico Transitorio/terapia , Volumen Plasmático , Anciano , Austria , Método Doble Ciego , Femenino , Estudios de Seguimiento , Hematócrito , Hemodilución/efectos adversos , Humanos , Ataque Isquémico Transitorio/fisiopatología , Masculino , Factores de RiesgoRESUMEN
Immediate diagnostic clarification is required in patients who develop acute or subacute symptoms suggestive of an intraspinal lesion. In case of symptoms indicating a monoradicular lesion a spinal CT investigation is mostly sufficient. Since polyradicular syndromes are often due to inflammation, examination of the cerebrospinal fluid is the most important diagnostic measure. However, in case of symptoms suggestive of intramedullary lesions, spinal MRT is by far the most effective diagnostic procedure. In patients with symptoms suggestive of a lesion of the cauda equina spinal CT is sufficient in most cases as a first measure, particularly if the lesion can be precisely localized by clinical examination. The decision as to which diagnostic method should be performed first is relevant mainly because of the limited availability of MRT examinations within the daily clinical routine. MRT should thus be used selectively in patients with lesions that cannot be identified by alternative diagnostic methods.
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Urgencias Médicas , Imagen por Resonancia Magnética , Compresión de la Médula Espinal/diagnóstico , Neoplasias de la Médula Espinal/diagnóstico , Tomografía Computarizada por Rayos X , Diagnóstico Diferencial , Humanos , Médula Espinal/patología , Compresión de la Médula Espinal/etiología , Neoplasias de la Médula Espinal/etiologíaRESUMEN
BACKGROUND: Polymerase chain reaction (PCR) based detection of species specific sequences of the 16S rRNA gene of Tropheryma whippelii is a recently described method for diagnosis of Whipple's disease. AIMS: Comparison of histology with PCR in mucosal samples of patients with Whipple's disease before, during, and after treatment. Detection of T whippelii in peripheral blood mononuclear cells as a non-invasive test for infection. METHODS: Four consecutive patients with histologically proven Whipple's disease were studied prospectively. RESULTS: In untreated patients biopsy specimens taken from regions with PAS positive macrophages gave a positive result with PCR for T whippelii; however, a PCR signal was also found in tissue biopsy specimens from mucosal regions with negative histology. In two of the patients the PCR performed with nucleic acids extracted from peripheral blood mononuclear cells was positive. After treatment with sulfamethoxazole/trimethoprim the PCR became negative after one month in two patients and after two months in the third patient treated, whereas PAS positive macrophages were found throughout the treatment period in two patients and disappeared in only one of them thereafter. CONCLUSIONS: Detection of T whippelii specific sequences based on the PCR is useful to confirm the diagnosis, is able to detect a positive signal in samples taken from histologically negative mucosal areas, and can be used to monitor treatment. The PCR can sometimes be positive in peripheral blood mononuclear cells, but this cellular compartment cannot be taken as a substitute for duodenal biopsy specimens in the diagnosis of Whipple's disease.
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Actinobacteria/genética , Mucosa Intestinal/microbiología , Reacción en Cadena de la Polimerasa , ARN Bacteriano/análisis , ARN Ribosómico 16S/análisis , Enfermedad de Whipple/diagnóstico , Adulto , Anciano , Duodeno/microbiología , Duodeno/patología , Femenino , Estudios de Seguimiento , Humanos , Mucosa Intestinal/patología , Macrófagos/microbiología , Masculino , Persona de Mediana Edad , Estudios Prospectivos , Enfermedad de Whipple/genética , Enfermedad de Whipple/patologíaRESUMEN
Cocaine abuse as a risk factor for acute cerebrovascular events has received too little attention, in particular in young patients. Cocaine hydrochloride causes mainly intracerebral and subarachnoidal bleeding, while crack (freebase) causes intracranial hemorrhage and ischemic infarctions with equal frequency. Although no specific antidote is known, an attempt should be made to detect the substance or its metabolites in the urine so as to provide optimal management, and encourage the patient to seek expert counselling.
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Hemorragia Cerebral/inducido químicamente , Infarto Cerebral/inducido químicamente , Cocaína/efectos adversos , Cocaína Crack/efectos adversos , Narcóticos/efectos adversos , Trastornos Relacionados con Sustancias/complicaciones , Adolescente , Adulto , Femenino , Humanos , Masculino , Factores de Riesgo , Hemorragia Subaracnoidea/inducido químicamenteRESUMEN
Thirty-eight patients with "chronic daily" headache and ergotamine and/or analgesics abuse according to the criteria proposed by the International Headache Society were re-investigated 5 years after inpatient drug withdrawal. At the end of the observation period, 19 patients (50.0%) had their headaches on only 8 days per month or less, 18 patients (47.4%) were free of symptoms or had only mild headaches. A close correlation was found between the frequency of headache and the duration of drug abuse, as well as between the intensity of headache and the number of tablets taken per month. Frequency and intensity of headache had changed within the first 2 years after withdrawal, but remained stable afterwards. Fifteen patients (39.5%) reported on recurrent drug abuse. Patients with migraine showed a tendency towards a better prognosis compared to patients with tension-type headache or with combined migraine and tension-type headache. The results of this study highlight the long-term efficacy of inpatient drug withdrawal in patients with headache and ergotamine and/or analgesics abuse.
Asunto(s)
Analgésicos/efectos adversos , Ergotamina/efectos adversos , Cefalea , Trastornos Relacionados con Sustancias , Adulto , Edad de Inicio , Enfermedad Crónica , Femenino , Estudios de Seguimiento , Cefalea/inducido químicamente , Cefalea/tratamiento farmacológico , Humanos , Masculino , Persona de Mediana Edad , Trastornos Migrañosos/inducido químicamente , Trastornos Relacionados con Sustancias/complicaciones , Trastornos Relacionados con Sustancias/tratamiento farmacológicoRESUMEN
PURPOSE: Only few data are available concerning variations of lipids and lipoproteins in the acute stage after ischemic cerebrovascular events. It was the aim of this study to investigate whether the lipid and lipoprotein levels obtained in the first few days after a transient ischemic attack (TIA) or a minor stroke (MS) actually reflect "correct' values or "changed' (ie, false low) values, as in patients after acute myocardial infarction. PATIENTS AND METHODS: Total cholesterol (TC), HDL-cholesterol (HDL-C), LDL-cholesterol (LDL-C), and triglyceride (TG) levels of 37 unselected patients with TIA or MS were determined within 12-48 hours (Group A) or within 49-168 hours (Group B) after the acute event. After a mean observation period of 15.3 months, all patients were re-examined; the results were compared with those of the baseline evaluation. RESULTS: At the time of the baseline evaluation, TC and LDL-C levels of Group B patients were significantly lower than Group A levels. At the end of the observation period, however, Group A and Group B patients did not differ with regard to all four parameters. In comparison with the baseline examination, the values of Group A patients had not changed. In Group B patients, however, TC, HDL-C, LDL-C, and TG levels had significantly increased. CONCLUSION: Our results strongly suggest that lipid and lipoprotein levels of patients with TIA or MS should be assessed within a maximum of 48 hours after the acute event. If the examination cannot be performed within that period, the determination of reliable values is possible only after several weeks or months.