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1.
Matern Child Health J ; 26(4): 882-894, 2022 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-34462812

RESUMEN

OBJECTIVE: To conduct an exploratory examination of dietary patterns and quality during pregnancy in African-American women who were class I, II, or III obese, and those women with normal pre-pregnancy body mass index (pBMI), as well to identify dietary factors associated with GWG, and changes in the distal gut microbiome. African American women represent the largest group affected by pre-pregnancy obesity, a risk factor for several adverse birth outcomes. METHODS: This prospective study investigated the association between diet, distal gut microbiome, and GWG among African-American women (n = 21) with obesity (n = 15) compared to women with a normal pre-pregnancy body mass index (pBMI) (n = 6) at two time points, 27-29 and 37-39 weeks gestation. Dietary patterns associated with obesity severity and GWG gain were assessed using Welch's T-test and Mann-Whitney U. The association between the gut microbiome and dietary patterns was assessed using a regression-based kernel association test and the adaptive microbiome-based sum of powered score test. RESULTS: In early pregnancy, dietary intake of Total Fruits and Greens and Beans was significantly different between pBMI and GWG groups; significance was 0.022 and 0.028 respectively. Women with Class II/III obesity and those with GWG above guidelines had Healthy Eating Index (HEI) scores below 50, meeting less than 75% of dietary guidelines, and did not meet recommendations for fruit and vegetable or fiber intake. We found no significant associations between the microbiome composition and diet (HEI Scores). CONCLUSIONS FOR PRACTICE: Overall, the results indicate that women with pBMI obesity are not meeting minimum dietary guidelines for nutrient intakes during pregnancy, specifically fruits, vegetables, and fiber, regardless of GWG. Interventions for African-American women with pre-pregnancy obesity, with a focus on increasing consumption of fruits and vegetables, would be beneficial to control GWG and improve birth outcomes.


Asunto(s)
Microbioma Gastrointestinal , Ganancia de Peso Gestacional , Complicaciones del Embarazo , Negro o Afroamericano , Índice de Masa Corporal , Dieta , Femenino , Humanos , Obesidad , Embarazo , Estudios Prospectivos , Verduras
2.
J Small Anim Pract ; 62(10): 886-894, 2021 10.
Artículo en Inglés | MEDLINE | ID: mdl-34159606

RESUMEN

OBJECTIVES: Acquired oesophageal strictures remain challenging to manage in canine and feline patients. The aims of this study were to describe the treatment, complications, short-term outcome and long-term follow-up of benign oesophageal strictures treated by balloon dilatation or stenting in dogs and cats and to describe adjunctive techniques to minimise the complication rate of stent placement. MATERIALS AND METHODS: Retrospective analysis of medical records of dogs and cats with benign oesophageal stricture diagnosed under endoscopy between 2002 and 2019. RESULTS: Eighteen dogs and nine cats were included, representing 39 strictures. Balloon dilatation was used as first-line therapy, with a good outcome in 59% of cases. Stents were placed in eight cases due to stricture recurrence; 88% had a long-term satisfactory outcome. Short-term complications occurred in six of eight cases; migration and aberrant mucosal reaction were uncommon. In three cases, progressive mesh cutting during follow-up reduced discomfort and trichobezoars formation and improved long-term stent tolerance. Overall median survival time was 730 days. CLINICAL SIGNIFICANCE: Long-term prognosis of balloon dilatation as a first-line therapy for esophageal strictures and of stenting as a rescue therapy was considered satisfactory. Although discomfort associated with stenting was frequent, tolerability might be improved by per-endoscopic adjunctive techniques.


Asunto(s)
Enfermedades de los Gatos , Enfermedades de los Perros , Estenosis Esofágica , Animales , Enfermedades de los Gatos/terapia , Gatos , Dilatación/efectos adversos , Dilatación/veterinaria , Enfermedades de los Perros/terapia , Perros , Endoscopía/veterinaria , Estenosis Esofágica/terapia , Estenosis Esofágica/veterinaria , Estudios Retrospectivos , Stents/efectos adversos , Stents/veterinaria , Resultado del Tratamiento
3.
Eur J Surg Oncol ; 47(5): 1012-1018, 2021 05.
Artículo en Inglés | MEDLINE | ID: mdl-33261952

RESUMEN

BACKGROUND: The aim of this single-center observational study was to evaluate the impact of implementing Enhanced Recovery After Surgery (ERAS) protocols, combined with systematic geriatric assessment and support, on surgical and oncological outcomes in patients aged 70 or older undergoing colonic cancer surgery. METHODS: Two groups were formed from an actively maintained database from all patients undergoing laparoscopic colonic surgery for neoplasms during a defined period before (standard group) or after (ERAS group) the introduction of an ERAS program associated with systematic geriatric assessment. The primary outcome was postoperative 90-day morbidity. Secondary outcomes were total length of hospital stay, initiated and completed adjuvant chemotherapy (AC) rate, and 1-year mortality rate. RESULTS: A total of 266 patients (135 standard and 131 ERAS) were included in the study. Overall 90-day morbidity and mean hospital stay were significantly lower in the ERAS group than in the standard group (22.1% vs. 35.6%, p = 0.02; and 6.2 vs. 9.3 days, p < 0.01, respectively). There were no differences in readmission rates and anastomotic complications. AC was recommended in 114 patients. The rate of initiated treatment was comparable between the groups (66.6% vs. 77.7%, p = 0.69). The rate of completed AC was significantly higher in the ERAS group (50% vs. 20%, p < 0.01) with a lower toxicity rate (57.1% vs. 87.5%, p = 0.002). The 1-year mortality rate was higher in the standard group (7.4% vs. 0.8%, p < 0.01). CONCLUSIONS: The combination of ERAS protocols and geriatric assessment and support reduces the overall morbidity rate and improves 12-month oncologic outcomes.


Asunto(s)
Neoplasias del Colon/cirugía , Recuperación Mejorada Después de la Cirugía , Anciano , Anciano de 80 o más Años , Quimioterapia Adyuvante , Neoplasias del Colon/mortalidad , Neoplasias del Colon/patología , Femenino , Evaluación Geriátrica , Humanos , Masculino , Morbilidad
4.
Acta Anaesthesiol Scand ; 62(4): 493-503, 2018 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-29315472

RESUMEN

BACKGROUND: Organ failures are the main prognostic factors in septic shock. The aim was to assess classical clinico-biological parameters evaluating organ dysfunctions at intensive care unit admission, combined with proteomics, on day-30 mortality in critically ill onco-hematology patients admitted to the intensive care unit for septic shock. METHODS: This was a prospective monocenter cohort study. Clinico-biological parameters were collected at admission. Plasma proteomics analyses were performed, including protein profiling using isobaric Tag for Relative and Absolute Quantification (iTRAQ) and subsequent validation by ELISA. RESULTS: Sixty consecutive patients were included. Day-30 mortality was 47%. All required vasopressors, 32% mechanical ventilation, 33% non-invasive ventilation and 13% renal-replacement therapy. iTRAQ-based proteomics identified von Willebrand factor as a protein of interest. Multivariate analysis identified four factors independently associated with day-30 mortality: positive fluid balance in the first 24 h (odds ratio = 1.06, 95% CI = 1.01-1.12, P = 0.02), severe acute respiratory failure (odds ratio = 6.14, 95% CI = 1.04-36.15, P = 0.04), von Willebrand factor plasma level > 439 ng/ml (odds ratio = 9.7, 95% CI = 1.52-61.98, P = 0.02), and bacteremia (odds ratio = 6.98, 95% CI = 1.17-41.6, P = 0.03). CONCLUSION: Endothelial dysfunction, revealed by proteomics, appears as an independent prognostic factor on day-30 mortality, as well as hydric balance, acute respiratory failure and bacteremia, in critically ill cancer patients admitted to the intensive care unit. Endothelial failure is underestimated in clinical practice and represents an innovative therapeutic target.


Asunto(s)
Proteínas Sanguíneas/análisis , Neoplasias/complicaciones , Proteómica/métodos , Choque Séptico/mortalidad , Lesión Renal Aguda/mortalidad , Anciano , Bacteriemia/mortalidad , Femenino , Humanos , Unidades de Cuidados Intensivos , Masculino , Persona de Mediana Edad , Pronóstico , Estudios Prospectivos , Equilibrio Hidroelectrolítico
5.
HLA ; 91(2): 146-147, 2018 02.
Artículo en Inglés | MEDLINE | ID: mdl-29152919

RESUMEN

We identified the novel HLA-G*01:21N null allele in Finnish Caucasian individuals.


Asunto(s)
Alelos , Antígenos HLA-G/genética , Población Blanca/genética , Secuencia de Bases , Exones/genética , Femenino , Finlandia , Humanos
6.
Int Nurs Rev ; 64(3): 331-344, 2017 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-28261789

RESUMEN

AIM: To provide a unique model for use in guiding global collaboration and policy to upscale nursing and midwifery partnerships. BACKGROUND AND INTRODUCTION: Nurses and midwives across nations need skills reaching beyond the bedside and unit level in today's complex, global, multifaceted healthcare milieu. Thoughtful consideration, research and concomitant development of models to guide appropriate upscaling of nurse and midwifery capacity within and between nations are needed. DISCUSSION: This article explores an integrated global approach to upscaling nurse and midwifery capacity using examples of partnerships between nursing and midwifery programmes across multiple continents. CONCLUSION AND IMPLICATIONS FOR NURSING: Global nurse and midwifery capacity is effectively being developed using a myriad of approaches. A new model is presented to illustrate supports, strategies and activities to achieve intermediate and long-term goals for capacity building through strong and sustainable global partnerships. IMPLICATION FOR NURSING POLICY: Development of global skills can focus the nurse and midwife to influence policy-level decisions. Human resource planning that can impact countrywide provision of health care begins in the preservice setting for both nurses and midwives. A global experience can be a value-added component to the well-rounded education of future nurses. Education during preparation for entry into practice is a strategic way to develop a worldview. Incorporating reflective practice can build skills and shape attitudes to prepare the new nurse to be comfortable as a global healthcare provider. An expanded world view is the springboard to more robust and informed involvement and inclusion in policy-level discussions.


Asunto(s)
Creación de Capacidad/organización & administración , Salud Global , Cooperación Internacional , Partería/organización & administración , Enfermeras Obstetrices/organización & administración , Adulto , Femenino , Humanos , Masculino , Persona de Mediana Edad
7.
Anaesthesia ; 71(9): 1081-90, 2016 09.
Artículo en Inglés | MEDLINE | ID: mdl-27418297

RESUMEN

Severe forms of acute respiratory distress syndrome in patients with haematological diseases expose clinicians to specific medical and ethical considerations. We prospectively followed 143 patients with haematological malignancies, and whose lungs were mechanically ventilated for more than 24 h, over a 5-y period. We sought to identify prognostic factors of long-term outcome, and in particular to evaluate the impact of the severity of acute respiratory distress syndrome in these patients. A secondary objective was to identify the early (first 48 h from ICU admission) predictive factors for acute respiratory distress syndrome severity. An evolutive haematological disease (HR 1.71; 95% CI 1.13-2.58), moderate to severe acute respiratory distress syndrome (HR 1.81; 95% CI 1.13-2.69) and need for renal replacement therapy (HR 2.24; 95% CI 1.52-3.31) were associated with long-term mortality. Resolution of neutropaenia during ICU stay (HR 0.63; 95% CI 0.42-0.94) and early microbiological documentation (HR 0.62; 95% CI 0.42-0.91) were associated with survival. The extent of pulmonary infiltration observed on the first chest X-ray and the diagnosis of invasive fungal infection were the most relevant early predictive factors of the severity of acute respiratory distress syndrome.


Asunto(s)
Enfermedades Hematológicas/complicaciones , Síndrome de Dificultad Respiratoria/complicaciones , Adulto , Anciano , Anciano de 80 o más Años , Femenino , Humanos , Masculino , Persona de Mediana Edad , Estudios Prospectivos , Factores de Riesgo , Índice de Severidad de la Enfermedad , Factores de Tiempo , Adulto Joven
8.
Int Nurs Rev ; 63(3): 437-44, 2016 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-26970328

RESUMEN

BACKGROUND: Iron deficiency is a prevalent health problem in India affecting women and newborns. Delayed umbilical cord clamping at birth is a safe and effective means for increasing serum iron levels in newborns up to 6 months of age. AIM: The study aim was to increase the utilization of delayed cord clamping in a group of midwives working in Hyderabad, India. METHODS: A single group pre- and post-test design was used to evaluate knowledge, beliefs and practice before and after a delayed cord clamping intervention including follow-up at 10 months after the original intervention. The intervention included lectures and simulation. RESULTS: Results show significant increases in knowledge and positive beliefs about the practice of delayed cord clamping. Simulation was effective for eliciting important feedback related to learning. LIMITATIONS: Results represent a small group of midwives working with a non-profit foundation in Southern India. Language discordancy and cultural norms in this group of midwives may have influenced results. CONCLUSIONS: Knowledge, beliefs and practice related to delayed cord clamping were all significantly improved after the intervention. The Knowledge to Action framework using simulation is an effective cross-cultural method for implementing education about evidence-based practice. Midwives are invested in learning practices that promote public health. IMPLICATIONS FOR NURSING AND HEALTH POLICY: Changing institutional policy may have limitations without first considering normative practice. Using simulation combined with institutional health policy appears to result in significant uptake of practice change. Qualitative studies exploring the interconnections between cultural norms and decision making may be informative about promoting practice change particularly in this setting. Upscaling midwifery has been recommended to improve maternal and child health in India.


Asunto(s)
Toma de Decisiones , Partería , Cordón Umbilical , Niño , Constricción , Femenino , Humanos , India , Recién Nacido , Embarazo
9.
BJOG ; 123(2): 199-206, 2016 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-26840538

RESUMEN

BACKGROUND: Prepregnant obesity is a global concern and gestational weight gain has been found to influence the risks of preterm birth. OBJECTIVE: To assess the relationship between gestational weight gain and risk for preterm birth in obese women. SEARCH STRATEGY: Four electronic databases were searched from 18 February through to 28 April 2015. SELECTION CRITERIA: Primary research reporting preterm birth as an outcome in obese women and gestational weight gain as a variable that could be compared to the 2009 Institute of Medicine's recommendations. DATA COLLECTION AND ANALYSIS: Two reviewers independently assessed trials for inclusion. The Newcastle Ottawa Scale was used to assess study bias. MAIN RESULTS: Our search identified six studies meeting the inclusion criteria; five were conducted in the USA and one in Peru. Four studies with a total of 10 171 obese women were meta-analysed. Significant heterogeneity was found between studies in the pooled analysis. Results for indicated preterm birth in obese women with gestational weight gain above the Institute of Medicine's recommendations showed increased risk (adjusted odds ratio 1.54; 95% CI 1.09-2.16). CONCLUSIONS: Available science on this topic is limited to special populations of obese pregnant women. Generalisable research is needed to assess the variation in risk for preterm birth in obese women by differences in gestational weight gain and class of obesity controlling for significant variables in the pathway to preterm birth. This research has the potential to illuminate new science impacting preterm birth and interventions for prevention.


Asunto(s)
Obesidad/complicaciones , Complicaciones del Embarazo , Nacimiento Prematuro/etiología , Aumento de Peso , Adulto , Femenino , Humanos , Recién Nacido , Obesidad/epidemiología , Embarazo , Complicaciones del Embarazo/epidemiología , Resultado del Embarazo , Mujeres Embarazadas , Nacimiento Prematuro/epidemiología
10.
Br J Anaesth ; 112(1): 102-9, 2014 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-24046293

RESUMEN

BACKGROUND: Cancer patients present a high risk of sepsis and are exposed to cardiotoxic drugs during chemotherapy. Myocardial dysfunction is common during septic shock and can be evaluated at bedside using echocardiography. The aim of this study was to identify early cardiac dysfunctions associated with intensive care unit (ICU) mortality in cancer patients presenting with septic shock. METHODS: Seventy-two cancer patients admitted to the ICU underwent echocardiography within 48 h of developing septic shock. History of malignancies, anticancer treatments, and clinical characteristics were prospectively collected. RESULTS: ICU mortality was 48%. Diastolic dysfunction (e' ≤8 cm s(-1)) was an independent echocardiographic parameter associated with ICU mortality {odds ratio (OR) 7.7 [95% confidence interval (CI), 2.58-23.38]; P<0.001}. Overall, three factors were independently associated with ICU mortality: sepsis-related organ failure assessment score at admission [OR 1.35 ( 95% CI, 1.05-1.74); P=0.017], occurrence of diastolic dysfunction [OR 16.6 (95% CI, 3.28-84.6); P=0.001], and need for conventional mechanical ventilation [OR 16.6 (95% CI, 3.6-77.15); P<0.001]. Diastolic dysfunction was not associated with exposure to cardiotoxic drugs. CONCLUSIONS: Early diastolic dysfunction is a strong and independent predictor of mortality in cancer patients presenting with septic shock. It is not associated with exposure to cardiotoxic drugs. Further studies incorporating monitoring of diastolic function and therapeutic interventions improving cardiac relaxation need to be evaluated in cancer patients presenting with septic shock.


Asunto(s)
Diástole , Mortalidad Hospitalaria , Unidades de Cuidados Intensivos , Neoplasias/mortalidad , Choque Séptico/mortalidad , Anciano , Ecocardiografía , Femenino , Humanos , Masculino , Persona de Mediana Edad , Neoplasias/fisiopatología , Choque Séptico/fisiopatología
13.
Opt Express ; 20(3): 3296-301, 2012 Jan 30.
Artículo en Inglés | MEDLINE | ID: mdl-22330567

RESUMEN

We have demonstrated a monolithic cladding-pumped ytterbium-doped single all-fiber laser oscillator generating 1 kW of CW signal power at 1080 nm with 71% slope efficiency and near diffraction-limited beam quality. Fiber components were highly integrated on "spliceless" passive fibers to promote laser efficiency and alleviate non-linear effects. The laser was pumped through a 7:1 pump combiner with seven 200-W 91x nm fiber-pigtailed wavelength-beam-combined diode-stack modules. The signal power of such a single all-fiber laser oscillator showed no evidence of roll-over, and the highest output was limited only by available pump power.


Asunto(s)
Amplificadores Electrónicos , Láseres de Semiconductores , Oscilometría/instrumentación , Diseño de Equipo , Análisis de Falla de Equipo
14.
Acta Anaesthesiol Scand ; 56(2): 178-89, 2012 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-22150473

RESUMEN

BACKGROUND: The short-term survival of critically ill patients with cancer has improved over time. Studies providing long-term outcome for these patients are scarce. METHODS: We prospectively analyzed outcomes and rates of successful discharge of 111 consecutive critically ill cancer patients admitted to intensive care unit (ICU) in 2008 and identified factors influencing these results. RESULTS: ICU mortality was 32% and hospital mortality was 41%. None of the characteristics of the malignancy nor age or neutropenia were significantly different between survivors and others. Two variables were independently associated with ICU mortality: high Logistic Organ Dysfunction score on day 7 and a diagnosis of viral infection and/or reactivation. The 1-year mortality rate for ICU survivors was 58% and was significantly lower in patients with a diagnosis of acute leukemia or multiple myeloma. CONCLUSION: Organ failure scores on day 7 can predict outcome for cancer patients in the ICU. Viral infection and reactivation appear to worsen the prognosis. One-year mortality rate is high and depends on the malignancy.


Asunto(s)
Cuidados Críticos , Enfermedad Crítica/mortalidad , Neoplasias/mortalidad , Neoplasias/terapia , APACHE , Anciano , Comorbilidad , Femenino , Mortalidad Hospitalaria , Humanos , Infecciones/microbiología , Infecciones/mortalidad , Infecciones/virología , Unidades de Cuidados Intensivos , Tiempo de Internación , Escala de Lod , Masculino , Persona de Mediana Edad , Insuficiencia Multiorgánica/etiología , Insuficiencia Multiorgánica/mortalidad , Neoplasias/complicaciones , Alta del Paciente , Pronóstico , Estudios Prospectivos , Insuficiencia Respiratoria/etiología , Análisis de Supervivencia , Sobrevivientes , Resultado del Tratamiento
15.
Tissue Antigens ; 79(1): 15-24, 2012 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-22050290

RESUMEN

The non-classical human leukocyte antigen (HLA) class I genes present a very low rate of variation. So far, only 10 HLA-E alleles encoding three proteins have been described, but only two are frequently found in worldwide populations. Because of its historical background, Brazilians are very suitable for population genetic studies. Therefore, 104 bone marrow donors from Brazil were evaluated for HLA-E exons 1-4. Seven variation sites were found, including two known single nucleotide polymorphisms (SNPs) at positions +424 and +756 and five new SNPs at positions +170 (intron 1), +1294 (intron 3), +1625, +1645 and +1857 (exon 4). Haplotyping analysis did show eight haplotypes, three of them known as E*01:01:01, E*01:03:01 and E*01:03:02:01 and five HLA-E new alleles that carry the new variation sites. The HLA-E*01:01:01 allele was the predominant haplotype (62.50%), followed by E*01:03:02:01 (24.52%). Selective neutrality tests have disclosed an interesting pattern of selective pressures in which balancing selection is probably shaping allele frequency distributions at an SNP at exon 3 (codon 107), sequence diversity at exon 4 and the non-coding regions is facing significant purifying pressure. Even in an admixed population such as the Brazilian one, the HLA-E locus is very conserved, presenting few polymorphic SNPs in the coding region.


Asunto(s)
Alelos , Sitios Genéticos , Genoma Humano/fisiología , Antígenos de Histocompatibilidad Clase I/genética , Polimorfismo de Nucleótido Simple , Brasil , Exones/genética , Femenino , Frecuencia de los Genes/genética , Haplotipos , Humanos , Masculino , Sistemas de Lectura Abierta/genética , Antígenos HLA-E
16.
Ann Phys Rehabil Med ; 53(6-7): 387-98, 2010.
Artículo en Inglés, Francés | MEDLINE | ID: mdl-20638922

RESUMEN

OBJECTIVES: To evaluate the effects of a rehabilitation program in terms of balance, gait and muscle strength in a population of patients with myotonic dystrophy. PATIENTS: Twenty patients benefited, as outpatients in a hospital setting, from a rehabilitation program with clinical and instrumental evaluations. The evaluation focused on quantitative balance measurement by clinical and stabilometer tests, gait assessed by Locometre and extensors and flexors knee muscle strength measured in isokinetic concentric mode at 60°/s. RESULTS: After the rehabilitation program, we observed a significant improvement in the patients' balance capacities measured with the Berg Balance Scale (BBS), fast gait speed and muscle strength. However, the instrumental evaluation did not report any gains for static balance and spontaneous gait speed after the training program. No correlation was found between the various improvements. CONCLUSION: A rehabilitation program focused on strength, gait and balance allowed for significant improvements in some parameters of myotonic dystrophy. These results attest to the relevance of a short-term rehabilitation protocol for these patients in the framework of a multidisciplinary therapeutic care. The disparity observed in the results measured for these patients suggest the contribution of cognitive involvement in the limitations felt by patients with myotonic dystrophy in the areas of gait and balance.


Asunto(s)
Trastornos Neurológicos de la Marcha/rehabilitación , Distrofia Miotónica/fisiopatología , Distrofia Miotónica/rehabilitación , Equilibrio Postural , Adulto , Femenino , Trastornos Neurológicos de la Marcha/etiología , Humanos , Masculino , Persona de Mediana Edad , Ejercicios de Estiramiento Muscular , Resistencia Física , Evaluación de Programas y Proyectos de Salud , Entrenamiento de Fuerza , Resultado del Tratamiento
17.
Tissue Antigens ; 73(4): 379-80, 2009 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-19317754

RESUMEN

We identified six novel human leukocyte antigen-G alleles with synonymous mutations in Caucasian and/or African populations.


Asunto(s)
Alelos , ADN Intergénico/química , Antígenos HLA/genética , Antígenos de Histocompatibilidad Clase I/genética , Población Negra/genética , Antígenos HLA-G , Humanos , Datos de Secuencia Molecular , Mutación , Población Blanca/genética
18.
19.
Somatosens Mot Res ; 24(1-2): 41-51, 2007.
Artículo en Inglés | MEDLINE | ID: mdl-17558922

RESUMEN

To assess if multiple sclerosis patients with proprioceptive impairment are specifically affected during quiet standing with eyes open and how they can develop motor compensatory processes, 56 patients, classified from sensory clinical tests as ataxo-spastic (MS-AS) or only having spasticity (MS-S), were compared to 23 healthy adults matched for age. The postural strategies were assessed from the centre-of-pressure trajectories (CP), measured from a force platform in the eyes open standing condition for a single trial lasting 51.2 s. The vertical projection of the centre of gravity (CGv) and its vertical difference from the CP (CP-CGv) were then estimated through a biomechanical relationship. These two movements permit the characterization of the postural performance and the horizontal acceleration communicated to the CG and from that, the global energy expenditure, respectively. Both MS-AS and MS-S groups demonstrate larger CGv and CP-CGv movements than healthy individuals of the same age. Whilst similar CGv values are noticed in both MS subgroups, suggesting similar postural performances, statistically significant differences are observed for the CP-CGv component. Biomechanically, this feature expresses the necessity for the MS-AS group to develop augmented neuro-muscular means to control their body movements, as compared to the MS-S group. By demonstrating for both groups of patients similar postural performance accompanied by a varying degree of energy expenditure to maintain undisturbed upright stance, this study reveals that MS-AS patients which are affected by proprioceptive loss can compensate for this deficit with more efficient control strategies, when standing still with their eyes open.


Asunto(s)
Adaptación Fisiológica , Esclerosis Múltiple/complicaciones , Equilibrio Postural/fisiología , Trastornos Somatosensoriales/etiología , Trastornos Somatosensoriales/fisiopatología , Adulto , Femenino , Humanos , Masculino , Persona de Mediana Edad
20.
Mult Scler ; 11(4): 485-91, 2005 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-16042234

RESUMEN

A prospective analysis of gait and strength parameters was performed in 100 patients diagnosed with MS and pyramidal involvement admitted in a rehabilitation unit The patients were divided into two groups based on their ability to walk in daily life (nonassisted or cane-assisted gait) and into four clinical subgroups depending on associated involvements such as sensory loss or cerebellar ataxia. Twenty healthy subjects were studied as a control group. Gait parameters were evaluated with a Locometre and muscle strength with an isokinetic dynamometer. The results showed that the average velocity and strength of the hamstring and quadriceps were strongly correlated and reduced in the MS group in comparison with the control, and in the cane-assisted group compared with the nonassisted group. Gait velocity tended to be more correlated to hamstring strength in the nonassisted group with a determination coefficient (r2) reaching a value of 0.44 in the sensory subgroup. These findings provide evidence that a correlation between strength reduction and gait impairment is obvious whatever the clinical form in patients with MS. This correlation is higher with hamstrings but may change depending on the disability level and the clinical form. This could be taken into account in the individual assessment of further rehabilitation programmes.


Asunto(s)
Marcha , Actividad Motora/fisiología , Esclerosis Múltiple/fisiopatología , Actividades Cotidianas , Humanos , Valores de Referencia , Trastornos de la Sensación/fisiopatología , Torque , Caminata/fisiología
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