RESUMO
Extracorporeal cardiopulmonary resuscitation (eCPR) may be considered as a rescue attempt for highly selected patients with refractory cardiac arrest and potentially reversible etiology. Currently there are no randomized, controlled studies on eCPR, and valid predictors of benefit and outcome which might guide the indication for eCPR are lacking. Currently selection criteria and procedures differ across hospitals and standardized algorithms are lacking. Based on expert opinion, the present consensus statement provides a proposal for a standardized treatment algorithm for eCPR.
Assuntos
Reanimação Cardiopulmonar/métodos , Parada Cardíaca/terapia , Algoritmos , Consenso , Oxigenação por Membrana Extracorpórea/métodos , HumanosRESUMO
A focal neurological deficit with sudden onset or rapid progression is an alarming symptom indicating a neurological disorder with often urgent need for treatment. Particularly in the emergency room, where time and resources are limited, it is necessary to rapidly assign such a focal neurological deficit to a certain syndrome and to define a suspected diagnosis in order to execute the correct diagnostics and emergency therapy. In this article, we highlight frequent and typical neurological disorders presenting in the emergency room and their corresponding focal neurological deficits. The article and a suggested algorithm are to guide less-experienced colleagues to find quick steps from acute symptoms to diagnosis and emergency treatment of frequent and relevant neurological disorders in the emergency room.
Assuntos
Estado Terminal/terapia , Técnicas de Diagnóstico Neurológico , Serviços Médicos de Emergência/métodos , Doenças do Sistema Nervoso/diagnóstico , Doenças do Sistema Nervoso/terapia , Exame Físico/métodos , Diagnóstico Diferencial , Serviço Hospitalar de Emergência/organização & administração , HumanosRESUMO
Prolonged weaning of patients with neurological or neurosurgery disorders is associated with specific characteristics, which are taken into account by the German Society for Neurorehabilitation (DGNR) in its own guideline. The current S2k guideline of the German Society for Pneumology and Respiratory Medicine is referred to explicitly with regard to definitions (e.g., weaning and weaning failure), weaning categories, pathophysiology of weaning failure, and general weaning strategies. In early neurological and neurosurgery rehabilitation, patients with central of respiratory regulation disturbances (e.g., cerebral stem lesions), swallowing disturbances (neurogenic dysphagia), neuromuscular problems (e.g., critical illness polyneuropathy, Guillain-Barre syndrome, paraplegia, Myasthenia gravis) and/or cognitive disturbances (e.g., disturbed consciousness and vigilance disorders, severe communication disorders), whose care during the weaning of ventilation requires, in addition to intensive medical competence, neurological or neurosurgical and neurorehabilitation expertise. In Germany, this competence is present in centers of early neurological and neurosurgery rehabilitation, as a hospital treatment. The guideline is based on a systematic search of guideline databases and MEDLINE. Consensus was established by means of a nominal group process and Delphi procedure moderated by the Association of the Scientific Medical Societies in Germany (AWMF). In the present guideline of the DGNR, the special structural and substantive characteristics of early neurological and neurosurgery rehabilitation and existing studies on weaning in early rehabilitation facilities are examined.Addressees of the guideline are neurologists, neurosurgeons, anesthesiologists, palliative physicians, speech therapists, intensive care staff, ergotherapists, physiotherapists, and neuropsychologists. In addition, this guideline is intended to provide information to specialists for physical medicine and rehabilitation (PMR), pneumologists, internists, respiratory therapists, the German Medical Service of Health Insurance Funds (MDK) and the German Association of Health Insurance Funds (MDS). The main goal of this guideline is to convey the current knowledge on the subject of "Prolonged weaning in early neurological and neurosurgery rehabilitation".
Assuntos
Doenças do Sistema Nervoso/reabilitação , Reabilitação Neurológica/normas , Procedimentos Neurocirúrgicos/reabilitação , Procedimentos Neurocirúrgicos/normas , Guias de Prática Clínica como Assunto , Insuficiência Respiratória/prevenção & controle , Desmame do Respirador/normas , Alemanha/epidemiologia , Humanos , Doenças do Sistema Nervoso/cirurgia , Desmame do Respirador/métodosRESUMO
BACKGROUND AND PURPOSE: Detection of autoantibodies against neuronal surface antigens and their correlation with the pattern and severity of symptoms led to the definition of new autoimmune-mediated forms of encephalitis and was essential for the initiation of immunotherapies including plasma exchange. The elimination of autoantibodies using selective immunoadsorption (IA) is a pathophysiologically guided therapeutic approach but has not yet been evaluated in a separate analysis. METHODS: A retrospective analysis was performed of patients with autoimmune encephalitis who were treated with tryptophan IA in six neurological clinics between 2009 and 2013. The modified Rankin scale (mRS) was used to evaluate neurological status before and after IA. RESULTS: Data on 13 patients were documented. Twelve patients were positive for specific autoantibodies (NMDA-R, GABA, GAD, Lgl1). Patients received a series of a median of six IA treatments. Median mRS of all patients was 3.0 before IA and 2.0 after IA (P < 0.001). Eleven patients improved by at least one point in mRS after IA. CONCLUSION: For autoimmune-mediated forms of encephalitis rapid elimination of autoantibodies with selective IA seems to be an effective therapeutic option as part of multimodal immune therapy.
Assuntos
Autoanticorpos/sangue , Encefalite/imunologia , Encefalite/terapia , Técnicas de Imunoadsorção , Triptofano/metabolismo , Adulto , Idoso , Encefalite Antirreceptor de N-Metil-D-Aspartato/terapia , Proteínas do Citoesqueleto/imunologia , Encefalite/sangue , Feminino , Glutamato Descarboxilase/imunologia , Humanos , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos , Resultado do Tratamento , Adulto Jovem , Ácido gama-Aminobutírico/imunologiaRESUMO
Large hemispheric infarction (LHI), synonymously called malignant middle cerebral artery (MCA) infarction, is a severe neurological disease with a high mortality and morbidity. Treating physicians as well as relatives are often faced with few and low quality data when attempting to apply optimal treatment to these patients and make decisions. While current stroke treatment guidelines focus on risk factors, prevention and acute management, they include only limited recommendations concerning intensive care management of LHI. The Neurocritical Care Society (NCS) and the German Society for Neurocritical and Emergency Medicine (DGNI) organized an interdisciplinary consensus conference on intensive care management of LHI to meet this demand. European and American experts in neurology, neurocritical care, neurosurgery, neuroradiology and neuroanesthesiology were selected based on their expertise and research focus. Subgroups for several main topics elaborated a number of central clinical questions concerning this topic and evaluated the quality of the currently available data according to the grading of recommendation assessment, development and evaluation (GRADE) guideline system. Subsequently, evidence-based recommendations were compiled after weighing the advantages against the disadvantages of certain management options. This is a commented abridged version of the results of the consensus conference.
Assuntos
Infarto Cerebral/diagnóstico , Infarto Cerebral/terapia , Cuidados Críticos/normas , Serviços Médicos de Emergência/normas , Neurologia/normas , Guias de Prática Clínica como Assunto , AlemanhaRESUMO
BACKGROUND: Optimal management of physiological parameters in neurological/neurosurgical intensive care units (NICUs) is largely unclear as high-quality evidence is lacking. The aim of this survey was to investigate if standards exist in the use of clinical scores, systemic and cerebral monitoring and the targeting of physiology values and in what way this affects clinical management in German NICUs. METHODS: National survey, on-line anonymized questionnaire. German departments stating to run a neurological, neurosurgical or interdisciplinary neurological/neurosurgical intensive care unit were identified by a web-based search of all German hospitals and contacted via email. RESULTS: Responses from 78 German NICUs were obtained. Of 19 proposed clinical/laboratory/radiological scores only 5 were used regularly by >60 %. Bedside neuromonitoring (NM) predominantly consisted of transcranial Doppler sonography (94 %), electroencephalography (92 %) and measurement of intracranial pressure (ICP) (90 %), and was installed if patients had or were threatened by elevated ICP (86 %), had specific diseases like subarachnoid hemorrhage (51 %) or were comatose (35 %). Although mean trigger values for interventions complied with guidelines or wide-spread customs, individual trigger values varied widely, e.g., for hyperglycemia (maximum blood glucose between 120 and 250 mg/dl) or for anemia (minimum hemoglobin values between 5 and 10 g/dl). CONCLUSIONS: Although apparently aiming for standardization in neurocritical care, German NICUs show substantial differences in NM and monitoring-associated interventions. In terms of scoring and monitoring methods, German NICUs seem to be quite conservative. These survey results suggest a need of prospective and randomized interventional trials in neurocritical care to help define standards and target values.
Assuntos
Pesquisas sobre Atenção à Saúde , Unidades de Terapia Intensiva/normas , Monitorização Fisiológica/normas , Doenças do Sistema Nervoso/diagnóstico , Alemanha , HumanosRESUMO
The prognosis of neurointensive care patients depends largely on the occurrence of secondary ischemic/hypoxic tissue damage, which is mediated by different pathomechanisms, such as edema formation or increased intracranial pressure. Due to the cerebral damage and need for sedation as well as intubation, clinical assessment of these patients is limited. Furthermore, clinical signs of secondary damage, such as advanced herniation syndromes are often delayed and therefore mostly indicate irreversible brain damage. To adequately predict and detect secondary neuronal damage, various neuromonitoring techniques have been developed in recent years with ongoing technical refinement. These can be used for bedside and ideally continuous monitoring of various functional systems of the brain. Neuromonitoring is used to implement early therapeutic measures before irreversible brain damage has occurred, to monitor therapeutic effects, for evaluation of the prognosis and to improve the neurological outcome of patients. Different monitoring techniques are often combined in multimodal neuromonitoring. This article gives an overview of the most promising neuromonitoring techniques available.
Assuntos
Encefalopatias/diagnóstico , Encefalopatias/terapia , Cuidados Críticos/tendências , Monitorização Fisiológica/tendências , Neurologia/tendências , Sistemas Automatizados de Assistência Junto ao Leito/tendências , HumanosRESUMO
BACKGROUND: Neurological critical care lacks high-quality evidence to guide optimal treatment. Furthermore, it is presently rather unclear as to what extent German neurological intensivists adhere to guidelines, employ standard operating procedures or use scoring tools. METHODS: An e-mail-based questionnaire was distributed to physicians directing German neurological, neurosurgical and neurological/neurosurgical interdisciplinary intensive care units (ICUs). RESULTS: Of the 326 departments 78 answered the questionnaire and of these 53% were university units. The ICUs were either led by neurologists (37%), neurosurgeons (22%), anesthetists (28%) or a combination of these (13%). The mean number of ICU beds was 11.2 and the mean number of intensivists 7.7. Guideline adherence was stated to amount to 75 % by 41 % of the ICUs. Applications of standard procedures was achieved by more than 80 % for several ICU management aspects, while only 5 out of 19 of the respondents routinely used scoring tools in > 60% of the ICUs. The extent of protocol and score applications differed significantly according to hospital status or leading speciality. CONCLUSION: This survey suggests an obvious interest in but also an unfulfilled need of guidance in a standardized approach to neurological critical care in Germany. More activity in multicentre clinical research with a neurocritical focus to provide optimization of protocols, scores and guidelines appears to be warranted.
Assuntos
Cuidados Críticos/estatística & dados numéricos , Cuidados Críticos/normas , Fidelidade a Diretrizes/estatística & dados numéricos , Neurologia/estatística & dados numéricos , Neurologia/normas , Guias de Prática Clínica como Assunto , Padrões de Prática Médica/estatística & dados numéricos , Alemanha/epidemiologia , Pesquisas sobre Atenção à Saúde , Padrões de Prática Médica/normasRESUMO
BACKGROUND: While the application of intravenous systemic thrombolysis (IVT) with rt-PA (recombinant tissue plasminogen activator) in older patients is currently moving into the focus of epidemiological studies, only few data are available regarding the application in young patients ≤40 years. Single-center data of a thrombolysis register were analyzed with respect to safety and efficacy of the treatment of young patients. METHODS: In a retrospective subgroup analysis of 450 patients treated by IVT within a 3-hour time window, patients ≤40 years were identified (n = 20). Clinical data [age, pretherapeutic stroke severity (National Institute of Health Stroke Scale, NIHSS), OTT (onset to-treatment time), rt-PA-dose, DNT (door[-]to[-]needle time), rate of symptomatic intracranial hemorrhages] and medical history were determined. The clinical outcome was assessed by the mRS (modified Rankin Scale). The results were compared to those of patients >40 years (n = 430). RESULTS: Twenty patients ≤40 years (mean age 32 years) out of 450 patients (4%) were treated by IVT. The percentage of predisposing diseases and vascular risk factors was significantly lower when compared to patients >40 years (p < 0.05). In contrast, the percentage of smokers was significantly higher (55 vs. 24%; p < 0.05). In comparison to patients >40 years, OTT, DNT and NIHSS at admission were not significantly different. After 3 months, 11 of 20 young patients (55%) showed a favorable outcome (mRS 0-1) and 80% were functionally independent (mRS 0-2). In the group of patients >40 years (n = 430), the respective percentages were significantly lower [p < 0.05; 34% (mRS 0-1) and 52% (mRS 0-2), respectively]. Symptomatic intracranial hemorrhages were not observed (in patients >40 years: 4%, p < 0.05). CONCLUSIONS: In comparison to the cohort of patients >40 years, IVT in young patients is safe and leads to a significantly better outcome after 3 months. Our data therefore encourage the use of IVT in young patients.
Assuntos
Fibrinolíticos/uso terapêutico , Acidente Vascular Cerebral/tratamento farmacológico , Terapia Trombolítica/métodos , Ativador de Plasminogênio Tecidual/uso terapêutico , Adulto , Fatores Etários , Estudos de Coortes , Feminino , Fibrinolíticos/administração & dosagem , Fibrinolíticos/efeitos adversos , Alemanha , Humanos , Injeções Intravenosas , Masculino , Estudos Retrospectivos , Medição de Risco , Ativador de Plasminogênio Tecidual/administração & dosagem , Ativador de Plasminogênio Tecidual/efeitos adversos , Resultado do TratamentoRESUMO
BACKGROUND: A calcified chronic subdural hematoma is a rare disease and its neuroradiological presentation is variable. The degree of calcification extends from thin calcified inner membranes to dense calcification and even ossification of the hematoma. Previous reports described a maximum of two hematoma cavities with calcified inner hematoma membranes. METHODS: Neuroimaging report with illustrative computerized tomography images. RESULTS: A patient with a bilateral symptomatic calcified chronic subdural hematoma, or so-called "armoured brain", was admitted to our intensive care unit with clinical signs of increased intracranial pressure. Computerized cranial tomography demonstrated multiple bilaterally located hematoma cavities with thin calcified inner membranes. After neurosurgical intervention by bilateral burr hole trepanation, clinical symptoms improved. CONCLUSIONS: Our case of a calcified chronic subdural hematoma presents with an uncommon imaging pattern with more than four hematoma cavities bounded by predominantly convex- and concave-configured thin calcified inner membranes.
Assuntos
Calcinose/diagnóstico por imagem , Hematoma Subdural/diagnóstico por imagem , Tomografia Computadorizada por Raios X , Idoso de 80 Anos ou mais , Doença Crônica , Lateralidade Funcional/fisiologia , Humanos , Masculino , Índice de Gravidade de DoençaRESUMO
We here report on a 43-year-old man who was repeatedly admitted to our stroke unit with acute onset of sensorimotor hemisyndrome of acute onset. In most cases symptoms ceased shortly after admission, but twice when symptoms persisted thrombolytic therapy was applied. This case demonstrates that in emergency situations a rare differential diagnosis like conversion disorder with sensorimotor deficits may be hard to establish even if the patient presents to the same emergency unit.
Assuntos
Transtorno Conversivo/terapia , Transtornos dos Movimentos/terapia , Transtornos de Sensação/terapia , Terapia Trombolítica , Adulto , Diagnóstico Diferencial , Serviços Médicos de Emergência , Humanos , Masculino , Paresia/terapia , Escalas de Graduação Psiquiátrica , Acidente Vascular Cerebral/diagnóstico , Acidente Vascular Cerebral/terapiaRESUMO
The diagnostic work-up of patients with third cranial nerve palsy includes neuroimaging because the lesion of the oculomotor nerve may result from compression due to an aneurysm. The advantages and disadvantages of different neuroimaging techniques, i. e. magnetic resonance angiography (MRA), computed tomography angiography (CTA) and intra-arterial digital subtraction angiography (DSA), are still under debate. In this context, the present case report demonstrates that the application of 3 Tesla-MRA may help to detect an aneurysm of the internal carotid artery which had remained undetected by non-invasive standard methods applied before. Therefore 3 Tesla-MRA may help to fill a gap in diagnostic approaches between non-invasive (MRA, CTA) and invasive (DSA) neuroimaging techniques.
Assuntos
Aneurisma Intracraniano/diagnóstico , Doenças do Nervo Oculomotor/diagnóstico , Idoso , Angiografia Digital , Artéria Carótida Interna/patologia , Estenose das Carótidas/complicações , Angiografia Cerebral , Movimentos Oculares/fisiologia , Humanos , Aneurisma Intracraniano/etiologia , Aneurisma Intracraniano/patologia , Angiografia por Ressonância Magnética , Masculino , Exame Neurológico , Doenças do Nervo Oculomotor/complicações , Doenças do Nervo Oculomotor/patologia , Tomografia Computadorizada por Raios XRESUMO
BACKGROUND: The effectiveness of plasma exchange and intravenous application of immunoglobulins (IVIG) for the treatment of the Guillain Barré syndrome (GBS) has been demonstrated in large collectives. In contrast, there are only a few investigations in GBS patients with severe symptoms admitted to the intensive care unit (ICU) and treated with selective immune adsorption (SIA). We compared the efficacy and safety of SIA only versus SIA followed by IVIG in patients with severe GBS. METHODS: Patients with severe GBS admitted to the ICU were treated with SIA only or in combination with IVIG. Severity of symptoms was assessed using Hughes grades and severe GBS was defined as ≥ 3. Data were acquired retrospectively for the last 10 years (1998-2008). RESULTS: Data from 30 GBS patients (age 53 ± 16 years) with severe symptoms (Hughes grade 5: 30% [n = 9], grade 4: 57% [n = 17], grade 3: 13% [n = 4]) were analyzed. The mean Hughes grade at admission was 4.2 ± 0.7. Ten patients were treated by SIA only, 20 patients were treated sequentially with SIA followed by IVIG (30 g/d) over 3 days. The number of SIA sessions was 3.2 ± 0.8. Improvement of Hughes grade 4.2 ± 0.7 to 3.4 ± 0.9 (P < 0.001) occurred within 14.6 ± 15.5 days. Treatment with SIA only was as effective as the sequential therapy with IVIG. The Hughes grade decreased significantly in the group of patients where SIA was performed only (P = 0.008) and in the sequential treatment group (P < 0.001), respectively. In one patient SIA had to be terminated after one session due to ICU complications. Other severe side effects were not observed. CONCLUSIONS: In severely affected GBS patients admitted to ICU treatment with SIA seems to be safe and effective. In comparison to treatment with SIA only, sequential therapy with IVIG was not more effective.
Assuntos
Síndrome de Guillain-Barré/imunologia , Síndrome de Guillain-Barré/terapia , Imunoglobulinas Intravenosas/administração & dosagem , Imunoterapia/métodos , Unidades de Terapia Intensiva , Adulto , Idoso , Terapia Combinada , Feminino , Humanos , Técnicas de Imunoadsorção , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos , Índice de Gravidade de Doença , Resultado do TratamentoRESUMO
Severe acute hyponatremia is a life-threatening illness. We report the case of a 38-year-old woman with lethal cerebral edema due to acute isovolemic hyponatremia.
Assuntos
Edema Encefálico , Hiponatremia , Adulto , Edema Encefálico/etiologia , Feminino , Humanos , Hiponatremia/complicaçõesRESUMO
Extracorporeal cardiopulmonary resuscitation (eCPR) may be considered as a rescue attempt for highly selected patients with refractory cardiac arrest and potentially reversible etiology. Currently there are no randomized, controlled studies on eCPR, and valid predictors of benefit and outcome which might guide the indication for eCPR are lacking. Currently selection criteria and procedures differ across hospitals and standardized algorithms are lacking. Based on expert opinion, the present consensus statement provides a proposal for a standardized treatment algorithm for eCPR.
Assuntos
Reanimação Cardiopulmonar , Oxigenação por Membrana Extracorpórea , Parada Cardíaca , Consenso , Parada Cardíaca/terapia , Humanos , Seleção de PacientesRESUMO
The present study aims to examine the performance of the TONOPORT VI ambulatory blood pressure (BP) monitor in the inflation and deflation measurement methods, according to the European Society of Hypertension International Protocol revision 2010 (ESH-IP 2010). Systolic and diastolic blood pressures (SBP and DBP, respectively) of 33 subjects (23 female, 10 male) were sequentially measured and compared with reference measurements obtained by two observers using a standard mercury sphygmomanometer. The subjects were selected according to the recruitment instructions of the ESH-IP 2010. Three comparative readings were performed per subject. Among the 99 readings in the inflation measurement method were 92/94 (SBP/DBP) with differences ⩽5, 97/99 ⩽10 and 98/99 ⩽15 mm Hg. All of the 33 subjects had at least 2 out of 3 comparative readings with differences ⩽5 mm Hg and 0/0 of the subjects had no reading ⩽15 mm Hg. The validation of the deflation measurement method resulted in differences where 93/91 were ⩽5, 98/98 were ⩽10, and 99/99 were ⩽15 mm Hg. Thirty-two of the 33 subjects had at least 2 out of 3 comparative readings ⩽5 mm Hg and 0/0 of the subjects had no reading ⩽15 mm Hg. In conclusion, the TONOPORT VI, respectively, in the inflation and deflation measurement methods met all requirements of Part 1 and 2 of the ESH-IP 2010. Based on the study results, the TONOPORT VI can be recommended for BP measurements in adults.
Assuntos
Monitorização Ambulatorial da Pressão Arterial/instrumentação , Adulto , Idoso , Idoso de 80 Anos ou mais , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Oscilometria/instrumentaçãoRESUMO
PURPOSE: We here evaluated (1) the differential characteristics of status epilepticus (SE) in older (≥60 years) compared to younger adults (18-59 years). In particular, we were interested in (2) the proportion and characteristics of new onset SE in patients with no history of epilepsy (NOSE) in older compared to younger adults, and (3) predictive parameters for clinical outcome in older subjects with NOSE. METHODS: We performed a monocentric retrospective analysis of all adult patients (≥18years) admitted with SE to our tertiary care centre over a period of 10 years (2006-2015) to evaluate clinical characteristics and short-time outcome at discharge. RESULTS: One-hundred-thirty-five patients with SE were included in the study. Mean age at onset was 64 years (range 21-90), eighty-seven of the patients (64%) were older than 60 years. In 76 patients (56%), SE occurred as NOSE, sixty-seven percent of them were aged ≥60 years. There was no age-dependent predominance for NOSE. NOSE was not a relevant outcome predictor, especially regarding age-related subgroups. Older patients with NOSE had less frequently general tonic clonic SE (GTCSE; p=0.001) and were more often female (p=0.01). Regarding outcome parameters and risk factors in older patients with NOSE, unfavourable outcome was associated with infections during in-hospital treatment (0.04), extended stay in ICU (p=0.001), and generally in hospital (p<0.001). CONCLUSION: In our cohort, older patients represented the predominant subgroup in patients with SE. Older patients suffered more often from non-convulsive semiology and had a less favourable short-time outcome. NOSE was not a predictive outcome parameter in older patients. Data suggest that avoiding infections should have a priority because higher infection rates were associated with unfavourable outcome.
Assuntos
Estado Epiléptico/epidemiologia , Adolescente , Adulto , Fatores Etários , Idade de Início , Idoso , Idoso de 80 Anos ou mais , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos , Estado Epiléptico/complicações , Estado Epiléptico/fisiopatologia , Adulto JovemRESUMO
BACKGROUND: Bacterial meningitis is a life-threatening emergency that is still associated with high mortality and poor outcome. OBJECTIVE: The purpose of this article is to provide a review of clinical presentation, diagnostic procedure, therapy, and prognosis in bacterial meningitis. Prognostic factors which could be influenced positively are identified and a focused procedure in the emergency setting and for the treatment of complications are provided. MATERIAL AND METHODS: This work is based on a literature search (PubMed, guidelines) and personal experience (standard operating procedures, SOP). RESULTS: Despite improved health care, bacterial meningitis is still associated with high mortality and poor neurological outcome, which has remained largely unaltered during recent decades. Diagnosis and, more importantly, effective therapy of bacterial meningitis are often delayed, having an immediate negative influence on clinical outcome. Neurological and nonneurological complications often necessitate intensive care and may occur rapidly or in the further course of the disease. CONCLUSION: Immediate initiation of effective therapy is crucial to positively influence mortality and neurological outcome. Antibiotics should be administered within 30 min after admission. To achieve this, a focused and well-organized procedure in the emergency setting is necessary. Because of intra- and extracranial complications, patients need to be treated on intensive care units including neurological expertise and interdisciplinary support.
Assuntos
Cuidados Críticos/métodos , Meningites Bacterianas/terapia , Antibacterianos/uso terapêutico , Diagnóstico Tardio , Intervenção Médica Precoce , Serviço Hospitalar de Emergência , Humanos , Meningites Bacterianas/complicações , Meningites Bacterianas/diagnóstico , Meningites Bacterianas/mortalidade , Meningite Meningocócica/complicações , Meningite Meningocócica/diagnóstico , Meningite Meningocócica/mortalidade , Meningite Meningocócica/terapia , Meningoencefalite/complicações , Meningoencefalite/diagnóstico , Meningoencefalite/mortalidade , Meningoencefalite/terapia , Prognóstico , Análise de SobrevidaRESUMO
We investigated whether medial arterial calcification (MAC) impairs O2 supply to the exercising foot in diabetic patients with foot lesions. Transcutaneous O2 tension (tcPO2) was monitored at the dorsum of the foot before and after bicycle exercise in 11 diabetic patients with peripheral ischemic vascular disease (PIVD) with or without concomitant existence of MAC, 10 patients with MAC but without PIVD, 10 diabetic control subjects, and 6 nondiabetic control subjects. The mean preexercise tcPO2 level was comparable in these four groups. However, tcPO2 decreased significantly with exercise in feet with PIVD (mean +/- SE -17.9 +/- 2.7%, P less than 0.01, n = 11), regardless of presence or absence of vascular calcification. On the other hand, the value increased significantly with exercise in feet with MAC but without PIVD (21.2 +/- 3.5%, P less than 0.01, n = 10) and in those of diabetic control subjects (14.9 +/- 3.6%, P less than 0.01), respectively. The tcPO2 remained unchanged in the feet of nondiabetic control subjects (1.7 +/- 1.1%). The results suggest that MAC is not associated with reduced O2 supply to the exercising foot in diabetic patients.
Assuntos
Artérias/patologia , Calcinose/fisiopatologia , Neuropatias Diabéticas/fisiopatologia , Exercício Físico/fisiologia , Pé/irrigação sanguínea , Isquemia/fisiopatologia , Adulto , Calcinose/metabolismo , Calcinose/patologia , Neuropatias Diabéticas/metabolismo , Neuropatias Diabéticas/patologia , Feminino , Pé/fisiopatologia , Doenças do Pé/metabolismo , Doenças do Pé/patologia , Doenças do Pé/fisiopatologia , Humanos , Isquemia/metabolismo , Isquemia/patologia , Masculino , Oxigênio/metabolismo , Doenças Vasculares/metabolismo , Doenças Vasculares/patologia , Doenças Vasculares/fisiopatologiaRESUMO
BACKGROUND AND PURPOSE: In acute ischemic stroke, the hypoperfused but viable tissue is the main therapeutic target. In clinical routine, time-to-peak (TTP) maps are frequently used to estimate the hemodynamic compromise and to calculate the mismatch volume. We evaluated the accuracy of TTP maps to identify penumbral flow by comparison with positron emission tomography (PET). METHODS: Magnetic resonance imaging (MRI) and PET were performed in 11 patients with acute ischemic stroke (median 8 hours after stroke onset, 60 minutes between MRI and PET imaging). The volumes defined by increasing TTP thresholds (relative TTP delay of >2, >4, >6, >8, and >10 seconds) were compared with the volume of hypoperfusion (<20 mL/100 g per min) assessed by 15O-water PET. In a volumetric analysis, each threshold's sensitivity, specificity, and predictive values were calculated. RESULTS: The median hypoperfusion volume was 34.5 cm3. Low TTP thresholds included large parts of the hypoperfused but also large parts of normoperfused tissue (median sensitivity/specificity: 93%/60% for TTP >2) and vice versa (50%/91% for TTP >10). TTP >4 seconds best identifies hypoperfusion (84%/77%). The positive predictive values increased with the size of hypoperfusion. CONCLUSIONS: This first comparison of quantitative PET-CBF with TTP maps in acute ischemic human stroke indicates that the TTP threshold is crucial to reliably identify the tissue at risk; TTP >4 seconds best identifies penumbral flow; and TTP maps overestimate the extent of true hemodynamic compromise depending on the size of ischemia. Only if methodological restrictions are kept in mind, relative TTP maps are suitable to estimate the mismatch volume.