Risk of Parkinson's disease dementia related to level I MDS PD-MCI.

BACKGROUND: The International Parkinson and Movement Disorders Society criteria for mild cognitive impairment in PD need validation. The objectives of this present study were to evaluate prognostic validity of level I (abbreviated) International Parkinson and Movement Disorders Society mild cognitive impairment in PD criteria for development of PD dementia and compared them with level II (comprehensive) criteria. METHODS: We analyzed data from 8 international studies (1045 patients) from our consortium that included baseline data on demographics, motor signs, depression, detailed neuropsychological testing, and longitudinal follow-up for conversion to Parkinson's disease dementia. Survival analysis evaluated their contribution to the hazard of Parkinson's disease dementia. RESULTS: Level I mild cognitive impairment in PD, increasing age, male sex, and severity of PD motor signs independently increased the hazard of Parkinson's disease dementia. Level I and level II mild cognitive impairment in PD classification had similar discriminative ability with respect to the time to Parkinson's disease dementia. CONCLUSIONS: Level I mild cognitive impairment in PD classification independently contributes to the hazard of Parkinson's disease dementia. This finding supports the prognostic validity of the abbreviated mild cognitive impairment in PD criteria. © 2019 International Parkinson and Movement Disorder Society.

Is the placement of shunts in patients with idiopathic normal-pressure hydrocephalus worth the risk? Results of a study based on continuous monitoring of intracranial pressure.

OBJECT: Data from many studies have demonstrated that shunt insertion in patients with idiopathic normal-pressure hydrocephalus (NPH) is associated with high morbidity and a lack of significant improvement; however, the use of strict diagnostic and treatment protocols can improve the results of surgery in these patients. The primary aim in this prospective study was to analyze the results of shunt placement in 43 patients with idiopathic NPH. A secondary aim was to determine the relationship between several clinical and neuroimaging factors, and patient outcome after surgery. METHODS: Thirty men and 13 women with a mean age of 71.1 +/- 6.9 years participated in this study. All patients underwent clinical, neuropsychological, and radiological assessment before and 6 months after surgery. In all patients continuous monitoring of intracranial pressure was performed using a fiberoptic extradural sensor. In 31 patients cerebrospinal fluid dynamics were also determined. Eighty-six percent of patients showed clinical improvement after shunt insertion, 11.6% showed no change, and 2.3% exhibited some worsening. Gait improved in 81.4% of the patients, sphincter control in 69.8%, and cognitive dysfunction in 39.5%. There was no treatment-related death. Early or late postsurgical complications occurred in six patients (14%), although all of these complications were minor or were satisfactorily resolved. The complete clinical triad, cortical sulci size, and periventricular lucencies were related to outcome, whereas patient age, symptom duration, ventricular dilation, and the degree of presurgical dementia were unrelated to outcome. CONCLUSIONS: Given the correct diagnosis, shunt insertion can produce marked improvement in patients with idiopathic NPH syndrome, causing few deaths and few clinically relevant complications.

[Changes in the functional magnetic resonance imaging of the sensorimotor cortex in traumatic brain injury after intensive rehabilitation]. / Cambios en resonancia magnética funcional de la corteza sensitivomotora en pacientes con traumatismo craneoencefalico tras un programa intensivo de rehabilitación.

AIM: To evaluate the potential reorganization of the sensorimotor cortex in a patient with traumatic brain injury after an intensive motor rehabilitation. PATIENTS AND METHODS: A 17-year-old male with severe traumatic brain injury was submitted to functional magnetic resonance imaging (fMRI) analyses of motor control before and after motor rehabilitation. The motor tasks performed during fMRI were finger tapping, ankle plantar flexion, and toe flexion. RESULTS: Prior to treatment, the cerebrally activated areas for the right hand during finger tapping were the primary motor (M1), supplementary motor area (SMA), superior parietal and postcentral areas. For the left hand, the areas were the M1 and the cerebellum. After treatment, the activated areas were the pre and postcentral areas for the right hand and the precentral area for the left hand. For the foot motor-task, the activated areas prior to treatment were the paracentral area for the right foot, and the SMA, paracentral and poscentral areas for the left. After treatment, activation for the right foot was seen in the paracentral area, and activation for the left foot was seen in the paracentral area and SMA. CONCLUSIONS: The decrease in the post-treatment activation pattern could be explained as a cortical reorganization, which in the current study was related to motor skill and motor automatism acquired by the patient.

Cambios en resonancia magnética funcional de la corteza sensitivomotora en pacientes con traumatismo craneoencefálico tras un programa intensivo de rehabilitación / Changes in the functional magnetic resonance imaging of the sensorimotor cortex in traumatic brain injury after intensive rehabilitation

Objetivo. Evaluar el potencial de reorganización de la corteza sensitivomotora en pacientes con traumatismo craneoencefálico (TCE) después de un programa intensivo de rehabilitación. Pacientes y métodos. Se valoraron los cambios en la resonancia magnética funcional (RMf) motora en un paciente de 17 años afecto de TCE grave antes y después de un programa de rehabilitación motora. Las tareas realizadas durante el análisis con RMf fueron: oposición sucesiva del pulgar a los demás dedos de la mano (RMf motora de la mano) y flexión plantar del tobillo y de los dedos (RMf motora del pie), en ambos casos bilateral con períodos de reposo intercalados. Resultados. Previamente al tratamiento, las áreas cerebrales activadas durante la RMf motora de la mano derecha fueron el área motora primaria (M1), el área motora suplementaria (AMS), el área parietal superior y la región poscentral. Para la mano izquierda, las áreas de mayor actividad fueron M1 y cerebelo. Posteriormente al tratamiento, las áreas activadas fueron la región pre y poscentral para la mano derecha y la región precentral para la mano izquierda. Para la función motora del pie, las áreas activadas antes del tratamiento fueron el área paracentral para el pie derecho, y el AMS y el área poscentral para el pie izquierdo. Después del tratamiento, la activación para el pie derecho se vio en el área paracentral, y la activación para el pie izquierdo en el área paracentral y en el AMS. Conclusiones. La disminución de la actividad cortical posterior al tratamiento puede explicarse como una reorganización cortical, que en el presente estudio se correlaciona con los automatismos y habilidades motoras adquiridas por el paciente durante el proceso de rehabilitación (AU)

Aim. To evaluate the potential reorganization of the sensorimotor cortex in a patient with traumatic brain injury after an intensive motor rehabilitation. Patients and methods. A 17-year-old male with severe traumatic brain injury was submitted to functional magnetic resonance imaging (fMRI) analyses of motor control before and after motor rehabilitation. The motor tasks performed during fMRI were finger tapping, ankle plantar flexion, and toe flexion. Results. Prior to treatment, the cerebrally activated areas for the right hand during finger tapping were the primary motor (M1), supplementary motor area (SMA), superior parietal and postcentral areas. For the left hand, the areas were the M1 and the cerebellum. After treatment, the activated areas were the pre and postcentral areas for the right hand and the precentral area for the left hand. For the foot motor-task, the activated areas prior to treatment were the paracentral area for the right foot, and the SMA, paracentral and poscentral areas for the left. After treatment, activation for the right foot was seen in the paracentral area, and activation for the left foot was seen in the paracentral area and SMA. Conclusions. The decrease in the post-treatment activation pattern could be explained as a cortical reorganization, which in the current study was related to motor skill and motor automatism acquired by the patient (AU)