¿Mides la velocidad de la marcha en tu práctica diaria? Una revisión / Do you measure gait speed in your daily clinical practice? A review

La velocidad de la marcha (VM) a paso habitual es una medida fácil, rápida, económica, fiable e informativa. Con un cronómetro, como los que actualmente se encuentran en todos los móviles, dos marcas en el suelo y una mínima estandarización, un profesional sanitario obtiene una medida más objetiva y rápida respecto a muchas de las escalas habituales de valoración de las actividades de la vida diaria, por ejemplo. La VM es uno de los pilares del fenotipo de fragilidad y está fuertemente relacionada con la sarcopenia. Es un potente marcador de caídas, discapacidad incidente y de muerte, útil sobre todo como cribado en el ámbito comunitario o de atención primaria. Paralelamente, en los últimos años empieza a tener evidencia también en el pronóstico de procesos médicos agudos o en el paciente posquirúrgico, y se está estudiando la utilidad de esta herramienta en los pacientes con demencia, a la luz de su relación con las alteraciones cognitivas. La VM cumple los requerimientos fundamentales para una buena herramienta de cribado. Sin embargo, no se utiliza en la práctica clínica. ¿Por qué? Esta revisión, que no pretende ser sistemática ni exhaustiva, tiene diferentes objetivos: 1)revisar la relación entre VM y fragilidad; 2)revisar las principales técnicas de mediciön; 3)aportar evidencia en diferentes perfiles clínicos (personas mayores aparentemente sanas, con deterioro cognitivo, con cáncer, con otras patologías o problemas de salud) y en diferentes ámbitos (comunitario, hospitalización, rehabilitación), y 4)reflexionar de manera crítica sobre por qué todavía no se utiliza de manera rutinaria y qué faltaría para potenciar esta utilización (AU)

Gait speed (GS), measured at usual pace, is an easy, quick, reliable, non-expensive and informative measurement. With a standard chronometer, like those that currently found in mobile phones, and with two marks on the floor, trained health professionals obtain a more objective and quick measurement compared with many geriatric scales used in daily practice. GS is one of the pillars of the frailty phenotype, and is closely related to sarcopenia. It is a powerful marker of falls incidence, disability and death, mostly useful in the screening of older adults that live in the community. In recent years, the evidence is reinforcing the usefulness of GS in acute care and post-surgical patients. Its use in patients with cognitive impairment is suggested, due to the strong link between cognitive and physical function. Although GS meets the criteria for a good geriatric screening tool, it is not much used in clinical practice. Why? This review has different aims: (I) disentangling the relationship between GS and frailty; (II) reviewing the protocols to measure GS and the reference values; (III) reviewing the evidence in different clinical groups (older adults with frailty, with cognitive impairment, with cancer or other pathologies), and in different settings (community, acute care, rehabilitation), and (IV) speculating about the reasons for its poor use in clinical practice and about the gaps to be filled (AU)

Both deterioration and improvement in activities of daily living are related to falls: a 6-year follow-up of the general elderly population study Good Aging in Skåne.

OBJECTIVES: To determine the relationship between long-term change in activities of daily living (ADL) and falls in the elderly and to identify characteristics of groups at risk for falls. METHODS: This was a 6-year, prospective cohort study using data from the Good Aging in Skåne study in southern Sweden, involving 1,540 elderly subjects, including the oldest-old (age, 60-93 years). The subjects were recruited from the general population. ADL was measured at a baseline and follow-up assessment, using Sonn and Åsberg's revised scale and the ADL staircase. Falls were recorded in a period of 6 months before the follow-up assessment. The association between falls and change in ADL was calculated using adjusted, multiple logistic regression analysis and presented in odds ratios (ORs). RESULTS: Thirteen percent of the study population reported one or several falls in the measured period. Over the course of 6 years, one in four participants changed their ADL status, and parts of this category had an increased risk for falls compared with those who stayed independent in ADL or who had no change in the ADL staircase. Groups with different characteristics had a prominent risk for falls: those with a reduction of two to eight steps in the ADL staircase (OR, 4.05; 95% confidence interval [CI], 1.62-10.11) and those becoming independent from dependency in instrumental ADL (OR, 4.13; 95% CI, 1.89-9.00). The former group had advanced age with a greater burden of cognitive impairment, gait disability, arrhythmia, and fall risk medications. The latter group had a higher prevalence of ischemic heart disease and low walking speed. CONCLUSION: Both deterioration and improvement in ADL over the course of 6 years increased the risk for falls in a general elderly population. Interventional efforts may require different strategies, as groups with different characteristics were at risk. Those at risk with improved ADL function may have a history of sufficient burden of comorbidity combined with obtained mobility for exposure to a fall event.

Pacientes con enfermedad de Parkinson avanzada con y sin congelación de la marcha. Análisis comparativo de lesiones vasculares en resonancia magnética cerebral / Patients with advanced Parkinson’s disease with and without freezing of gait: A comparative analysis of vascular lesions using brain MRI

Introducción: La congelación de la marcha (CDM) es uno de los fenómenos más incapacitantes y menos comprendido de la enfermedad de Parkinson idiopática (EPI). Las lesiones vasculares, objetivadas mediante resonancia magnética nuclear (RMN), podrían contribuir a la aparición o empeoramiento de este síntoma. Pacientes y método: Se estudió un grupo de 22 pacientes con EPI avanzada, 12 con episodios de CDM y 10 sin dichos episodios. Se realizó RMN en todos los pacientes y se analizaron, mediante la escala de Fazekas modificada, las lesiones vasculares existentes. Resultados: Los pacientes con CDM obtuvieron puntuaciones superiores en la escala de Fazekas modificada. Aunque el porcentaje de pacientes que presentaban lesiones vasculares fue el mismo en ambos grupos (50% en los 2 grupos), la carga lesional fue superior en el grupo de pacientes con CDM. Las lesiones vasculares en la región periventricular y en la sustancia blanca profunda son las que parecen estar más implicadas en la aparición de la CDM. Conclusiones: Las lesiones vasculares podrían contribuir a la aparición o al empeoramiento de la CDM en los pacientes con EPI, con este estudio se sugiere que la afección vascular cerebral debe ser considerada en los pacientes con CDM

Introduction: Freezing of gait (FOG) is one of the most disabling and enigmatic symptoms in Parkinson’s disease. Vascular lesions, observed in magnetic resonance imaging (MRI) scans, may produce or exacerbate this symptom. Patients and methods: The study includes 22 patients with Parkinson’s disease subjects, 12 with freezing of gait and 10 without. All patients underwent an MRI scan and any vascular lesions were analysed using the modified Fazekas scale. Results: Patients with FOG scored higher on the modified Fazekas scale than the rest of the group. Although the two groups contained the same percentage of patients with vascular lesions (50% in both groups), lesion load was higher in the group of patients with FOG. Vascular lesions in the periventricular area and deep white matter seem to be the most involved in the development of FOG. Discussion: Vascular lesions may contribute to the onset or worsening of FOG in patients with PD. This study suggests that cerebral vascular disease should be considered in patients with FOG

Limb apraxia in multiple sclerosis: prevalence and impact on manual dexterity and activities of daily living.

OBJECTIVE: To evaluate the prevalence and impact of limb apraxia on manual dexterity and activities of daily living (ADLs) in patients with multiple sclerosis (MS). DESIGN: Survey. SETTING: University hospital. PARTICIPANTS: Consecutive patients (N=76) with clinically isolated syndrome, relapsing-remitting multiple sclerosis (RRMS), secondary progressive multiple sclerosis (SPMS) or primary progressive multiple sclerosis (PPMS), Expanded Disability Status Scale (EDSS) score from 0 to 6.5, and aged from 18 to 70 years were included. INTERVENTIONS: Not applicable. MAIN OUTCOME MEASURES: Apraxia was assessed by the apraxia screen of TULIA (AST). The relationship of apraxia with ADLs and manual dexterity was evaluated using a dexterity questionnaire and the coin rotation task, respectively. RESULTS: Overall, limb apraxia was found in 26.3% of patients (mean AST score ± SD, 7.3±1.3; cutoff <9). Apraxia was significantly correlated with higher EDSS scores, longer disease duration, and higher age with the EDSS being predictive. Furthermore, patients with SPMS and PPMS were more apraxic than patients with RRMS. Finally, limb apraxia was significantly associated with impaired ADLs and manual dexterity. CONCLUSIONS: Limb apraxia is a frequent and clinically significant symptom contributing to disability in MS. It should therefore be evaluated and possibly treated, particularly in patients with MS reporting manual difficulties in everyday life.

The association between motor subtypes and psychopathology in Parkinson's disease.

BACKGROUND: In Parkinson's disease (PD) it has been suggested that various motor subtypes are also characterized by a different prevalence and severity of specific non-motor symptoms such as cognitive deterioration, depression, apathy and hallucinations. The aim of this study was to investigate the association between motor subtypes and psychopathology in PD. METHODS: An exploratory and confirmatory cluster analysis of motor and psychopathological symptoms was performed with a randomized sample of 173 patients each, stemming from two research databases: one from Stavanger University Hospital and one from Maastricht University Hospital. These databases contained data of standardized assessments of patients with the Unified Parkinson's Disease Rating Scale, the Montgomery-Asberg Depression Rating Scale, and the Mini-Mental State Examination. RESULTS: PD patients can be accurately and reliably classified into four different subtypes: rapid disease progression subtype, young-onset subtype, non-tremor-dominant subtype with psychopathology and a tremor-dominant subtype. Cognitive deterioration, depressive and apathetic symptoms, and hallucinations all cluster within the non-tremor-dominant motor subtype, that is characterized by hypokinesia, rigidity, postural instability and gait disorder. CONCLUSIONS: This study shows that non-tremor-dominant PD is associated with cognitive deterioration, depression, apathy, and hallucinations, which has implications for future research into the pathophysiology of psychopathology in PD.

High prevalence of reported tremor in Klinefelter syndrome.

Several uncontrolled reports in the literature dating from decades ago suggest a link between Klinefelter syndrome (KS) and essential tremor (ET). Aiming to determine whether this association truly exists, we designed a controlled survey to ascertain the prevalence of reported tremor in KS. We identified subjects with KS through our hospital database and recruited controls among men who were accompanying patients to our Neurology Clinic. The presence of tremor and other variables were recorded employing a previously validated questionnaire. Whereas our control population was slightly older and more frequently reported a family history of tremor, the frequency of reported tremor was significantly higher in subjects with KS than controls with onset at a younger age. In addition, a high proportion of subjects with KS indicated gait imbalance. In summary, our study supports the previously reported association of an ET-like syndrome and KS.

Association between the metabolic syndrome and its components and gait speed among U.S. adults aged 50 years and older: a cross-sectional analysis.

BACKGROUND: To examine the relationship between the metabolic syndrome and its components and gait speed among older U.S. men and women. Whether these associations are independent of physical activity was also explored. METHODS: Eight hundred and thirty-five men and 850 women aged > or =50 years from the continuous National Health and Nutrition Examination Survey 1999-2002 were examined. We used the definition of the metabolic syndrome developed by the U.S. National Cholesterol Education Program Adult Treatment Panel III. Gait speed was measured with a 6.10-meter timed walk examination. RESULTS: The prevalence of the metabolic syndrome was 40.2% in men and 45.6% in women (P = .127). The prevalence of gait speed impairment was 29.3% in men and 12.5% in women (P < .001). No association was found between the metabolic syndrome and gait speed impairment. After including the individual components of the metabolic syndrome in a logistic model adjusted for age and leisure-time physical activity, abdominal obesity, low HDL cholesterol, and high fasting glucose were significantly associated with gait speed impairment among women (adjusted odds ratio [AOR] = 0.48, 95% confidence interval [CI] = 0.26 to 0.89; AOR = 2.26, 95% CI = 1.08 to 4.75; and AOR = 2.05, 95% CI = 1.12 to 3.74, respectively). Further adjustment for race/ethnicity, education, smoking status, alcohol consumption, arthritis status, and use of an assistive device attenuated these associations; among women, abdominal obesity and low HDL cholesterol remained significantly associated with gait speed impairment (AOR = 0.37, 95% CI = 0.18 to 0.76 and AOR = 2.45, 95% CI = 1.07 to 5.63, respectively) while the association between hyperglycemia and impaired gait speed attenuated to nonsignificance. CONCLUSION: Among women, gait speed impairment is associated with low HDL cholesterol and inversely with abdominal obesity. These associations may be sex-dependent and warrant further research.

Balance and gait deficits in schizophrenia compounded by the comorbidity of alcoholism.

OBJECTIVE: Alcoholism carries a liability of balance and gait instability that persists with sobriety. Such deficits are less well documented in schizophrenia and may be compounded by comorbidity with alcoholism, which is prevalent in schizophrenia. METHOD: The authors administered quantitative ataxia tests to 10 patients comorbid for schizophrenia and alcohol dependence/abuse, 10 nonalcoholic patients with schizophrenia, 24 nonschizophrenic patients with alcohol dependence, and 27 age-matched comparison men. RESULTS: All three patient groups were impaired relative to the comparison subjects. The comorbid group was significantly more impaired than the alcoholic group on most tests and was more impaired than the schizophrenia patients, especially when tested with eyes open. CONCLUSIONS: Rigorous quantitative testing revealed gait and balance deficits in schizophrenia, even without alcohol dependence, and exacerbated deficits in schizophrenia comorbid with alcoholism. The enhancement of postural stability expected with visual information was dampened in comorbid patients, implicating compromised sensorimotor integrative abilities.