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Dive into the research topics where Katherine Sanchez is active.

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Featured researches published by Katherine Sanchez.


The Journal of Rheumatology | 2010

Sensitivity to Change in Systemic Sclerosis of the McMaster-Toronto Arthritis Patient Preference Disability Questionnaire (MACTAR): Shift in Patient Priorities Over Time

Christelle Nguyen; Luc Mouthon; Caroline Mestre-Stanislas; François Rannou; Alice Bérezné; Katherine Sanchez; Agathe Papelard; Michel Revel; Loïc Guillevin; Serge Poiraudeau

Objective. To assess the sensitivity to change of the McMaster-Toronto Arthritis Patient Preference Disability Questionnaire (MACTAR) in systemic sclerosis (SSc) and a shift in patient priorities over time. Methods. We assessed 49 patients with SSc (8 men) using the MACTAR in a prospective longitudinal study twice or more during annual meetings of the French patient association from 2004 to 2007. Patient-perceived improvement or worsening regarding health status was recorded. Sensitivity to change was assessed by the effect size (ES) and the standardized response mean (SRM) of the MACTAR. Results. The MACTAR global score was significantly increased at followup in the whole group of patients, and the ES and SRM values were −0.37 and −0.34, respectively. These values were similar to those observed for widely used outcome measures for SSc such as the Health Assessment Questionnaire. As defined by the International Classification of Functioning, Disability and Health, the 3 disability domains most often cited at baseline were mobility (7 activities, cited 17 times; 33.3% of patients), domestic life (4 activities, cited 17 times; 33.3% of patients), and community, social and civic life (3 activities, cited 10 times; 19.6% of patients). At followup, 40 patients had changed their first priority and 34 changed 3 priorities. Conclusion. The evolution in MACTAR global score over time for patients with SSc reflects longterm general feelings of deterioration. However, shifts in patient priorities are common and may influence the sensitivity to change of the instrument.


The Journal of Rheumatology | 2010

Assessment of Ankylosing Spondylitis Criteria in Patients with Chronic Low Back Pain and Vertebral Endplate Modic I Signal Changes

Christelle Nguyen; Imad Bendeddouche; Katherine Sanchez; Marylène Jousse; Agathe Papelard; A. Feydy; Michel Revel; Serge Poiraudeau; François Rannou

Objective. Patients with chronic low back pain (cLBP) and vertebral endplate Modic I signal changes on lumbar magnetic resonance imaging (MRI) have clinical features that could mimic inflammatory back pain related to spondyloarthritis (SpA) and/or ankylosing spondylitis (AS). We aimed to assess whether such patients fulfilled criteria for SpA and/or AS. Methods. For 5 months in 2008, all patients (n = 314) referred to a tertiary care physical medicine and rehabilitation facility in France were consecutively screened. A total of 185 hospitalized for non-specific cLBP were prospectively assessed. Forty patients fulfilling inclusion criteria were consecutively enrolled and included in 2 groups according to MRI findings: Modic I (n = 15) and non-Modic I (n = 25). MRI findings were assessed independently by 2 spine specialists and a radiologist. HLA-B27 status was determined. Data were collected on clinical measurements and fulfillment of Amor criteria (AC) and modified New York criteria (mNYC). All assessors were blinded to HLA-B27 status. Results. Whatever the Modic group, no patient fulfilled AC or mNYC, and mean total scores were comparable [3 ± 2 (range 0–22; p = 0.977), 1 ± 1 (range 0–3; p = 1.000), and 0 ± 0 (range 0–1; p = 1.000) for AC and clinical and radiological mNYC, respectively]. HLA-B27 status was similar in both groups [n = 2 (13%) vs n = 0 (0%); p = 0.135]. Conclusion. Patients with cLBP and Modic I vertebral endplate signal changes on lumbar MRI do not fulfill widely used and validated criteria for SpA and/or AS. Such cases are clinically distinct from SpA and AS.


Spine | 2009

Patient-preference disability assessment for disabling chronic low back pain: a cross-sectional survey.

Katherine Sanchez; Agathe Papelard; Christelle Nguyen; Marylène Jousse; François Rannou; Michel Revel; Serge Poiraudeau

Study Design. A cross sectional survey. Objective. To assess patient priorities in disability and restriction in participation with disabling chronic low back pain (CLBP) by use of the McMaster-Toronto Arthritis Patient Preference Disability Questionnaire (MACTAR) and to compare this questionnaire with other outcome measures widely used in this situation. Summary of Background Data. Disability and participation restriction are widely assessed in CLBP but do not account for patient priorities. Knowing what is important to patients could be useful to help form treatment goals and plans. Methods. A total of 150 patients hospitalized in a tertiary care teaching hospital for the management of CLBP were enrolled in the study. Evaluation was by the MACTAR, the Quebec Back Pain Disability Questionnaire (QUEBEC), the Hospital Anxiety and Depression scale, the Fear-Avoidance Beliefs Questionnaire, the Coping Strategies Questionnaire, and pain and handicap visual analog scales. Correlations between the MACTAR score and scores for other scales were analyzed by the Spearman coefficient. Results. On the MACTAR, patients with CLBP cited as most important 3 disability domains classified by the International Classification of Functioning, Disability, and Health: mobility (n = 23 activities, 165 times, 33% of the patients); community, social, and civic life (n = 7 activities, 138 times, 27.6% of the patients); and domestic life (n = 10 activities, 123 times, 24.6% of the patients). Patients ranked first in importance 37 different activities, especially sport (n = 29 times; 19.3% of the patients), shopping (n = 14; 9.3% of the patients), and walking (n = 13; 8.7% of the patients). The MACTAR score was correlated moderately with visual analog scale handicap (r = 0.51), weakly with the QUEBEC score (r = 0.40), and not at all with Hospital Anxiety and Depression scale, Fear-Avoidance Beliefs Questionnaire, and Coping Strategies Questionnaire scores. Conclusion. For assessing priorities in disability and participation restriction among patients with CLBP, the MACTAR has acceptable construct validity. The weak correlation between QUEBEC and MACTAR scores suggests that the latter scale adds useful information for assessing the health priorities of disabled CLBP patients.


European Radiology | 2016

Correlation of force control with regional spinal DTI in patients with cervical spondylosis without signs of spinal cord injury on conventional MRI

Påvel G. Lindberg; Katherine Sanchez; Fidan Ozcan; François Rannou; Serge Poiraudeau; A. Feydy; Marc A. Maier

AbstractObjectivesThe aim of this study was to investigate spinal cord structure in patients with cervical spondylosis where conventional MRI fails to reveal spinal cord damage.MethodsWe performed a cross-sectional study of patients with cervical spondylosis without conventional MRI findings of spinal cord damage and healthy controls. Subjects were studied using spinal diffusion tensor imaging (DTI), precision grip and foot force-tracking tasks, and a clinical examination including assessment of neurological signs. A regional analysis of lateral and medial spinal white matter across multiple cervical levels (C1–C5) was performed.ResultsDTI revealed reduced fractional anisotropy (FA) and increased radial diffusivity (RD) in the lateral spinal cord at the level of greatest compression (lowest Pavlov ratio) in patients (p < 0.05). Patients with spondylosis had greater error and longer release duration in both grip and foot force-tracking. Similar spinal cord deficits were present in patients without neurological signs. Increased error in grip and foot tracking (low accuracy) correlated with increased RD in the lateral spinal cord at the level of greatest compression (p ≤ 0.01).ConclusionsSpinal DTI can detect subtle spinal cord damage of functional relevance in cervical spondylosis, even in patients without signs on conventional T2-imaging and without neurological signs.Key Points• DTI reveals spinal cord changes in cervical spondylosis with few symptoms • DTI changes were present despite normal spinal cord on conventional MRI • DTI parameters correlated with force control accuracy in hand and foot • Spinal DTI is a promising technique for patients with cervical spondylosis


Arthritis Care and Research | 2017

A personalized physical therapy program or usual care for patients with systemic sclerosis: A randomized controlled trial

François Rannou; Isabelle Boutron; Luc Mouthon; Katherine Sanchez; V. Tiffreau; E. Hachulla; P. Thoumie; J. Cabane; Emmanuel Chatelus; Jean Sibilia; Alexandra Roren; Alice Bérezné; Gabriel Baron; Raphael Porcher; Loïc Guillevin; Philippe Ravaud; Serge Poiraudeau

To compare a physical therapy program to usual care of systemic sclerosis (SSc) patients on disability.


Journal of Neuroradiology | 2012

Measures of spinal canal stenosis and relationship to spinal cord structure in patients with cervical spondylosis

Antoine Feydy; Katherine Sanchez; François Rannou; Marc A. Maier

OBJECTIVES Spinal canal stenosis is often measured on anatomical magnetic resonance imaging (MRI) to estimate the degree of spinal cord compression. This study examined whether two quantitative measures of spinal canal stenosis taken from anatomical MRI are related to spinal cord white-matter integrity in patients with cervical spondylosis measured by diffusion tensor imaging (DTI). PATIENTS AND METHODS DTI and T2-weighted MRI of the cervical spinal cord were performed in 15 patients with cervical spondylosis and ten healthy control subjects of similar age. Severity of stenosis was calculated using Pavlovs ratio and the space-available-for-cord (SAC) technique. RESULTS Patients had significantly lower Pavlovs ratios and SAC (C2-C3, C4-C5 and C6-C7), lower fractional anisotropy (FA; C2-C3 and C4-C5) and higher radial diffusivity (C2-C3, C4-C5 and C6-C7) than the controls. In patients, only Pavlovs ratio correlated with mean FA (R=0.66, P=0.008). Variations in Pavlovs ratio and FA also showed a similar pattern across cervical levels. CONCLUSION Pavlovs ratio is a better predictor of spinal cord integrity than the SAC and, therefore, may be more relevant clinically for the evaluation of stenosis in patients with cervical spondylosis.


Presse Medicale | 2016

Systemic sclerosis: Sexual dysfunction and lower urinary tract symptoms in 73 patients

Katherine Sanchez; Pierre Denys; François Giuliano; Clémence Palazzo; Alice Bérezné; Hanane Abid; François Rannou; Serge Poiraudeau; Luc Mouthon

OBJECTIVE To estimate the frequency of lower urinary tract symptoms (LUTS) and sexual dysfunction in patients with systemic sclerosis (SSc) and associate these symptoms with clinical and functional parameters including disability and quality of life. METHODS Patients with SSc seen in Cochin hospital, Paris, between February and April 2010 were assessed for disease type, LUTS by the Urinary Symptom Profile scale, sexual dysfunction by the Feminine Sexual Function Index (FSFI) and International Index for the Erectile Function (IIEF-5), global disability by the Health Assessment Questionnaire and McMaster Toronto Arthritis Patient Preference Disability Questionnaire, anxiety and depression by the Hospital Anxiety and Depression scale, and quality of life by the Medical Outcomes Survey Short Form 36. RESULTS The most frequent LUTS among the 73 patients included (13 males) were overactive bladder (n=11, 84.6%) and dysuria (n=8, 61.5%) for males and overactive bladder (n=51, 85%) and incontinence (n=29, 48.3%) for females. Among women, 32 (53.2%) were sexually active: 20 (62.5%) had sexual disorders (mean [SD] FSFI score 16.3 [6.2]), the most compromised domains being desire (mean score 2.6 [1.3]) and arousal (mean score 2.5 [1.4]). Sexual disorders were associated with short disease duration (P=0.01) and high depression (P=0.04) scores. For men, 7/8 (87.5%) had erectile dysfunction (mean IIEF-5 score 16 [5.3]). CONCLUSION LUTS seem to be more frequent in SSc patients than in the general population. The most frequent symptom was overactive bladder.


Scientific Reports | 2017

Intensive spa and exercise therapy program for returning to work for low back pain patients: a randomized controlled trial

Christelle Nguyen; Isabelle Boutron; Christopher Rein; Gabriel Baron; Katherine Sanchez; Clémence Palazzo; Arnaud Dupeyron; Jean-Max Tessier; Emmanuel Coudeyre; Bénédicte Eschalier; Romain Forestier; Christian-François Roques-Latrille; Ygal Attal; Marie-Martine Lefèvre-Colau; François Rannou; Serge Poiraudeau

We aimed to determine whether a 5-day intensive inpatient spa and exercise therapy and educational program is more effective than usual care in improving the rate of returning to work at 1 year for patients with subacute and chronic low back pain (LBP) on sick leave for 4 to 24 weeks. We conducted a 12-month randomized controlled trial. LBP patients were assigned to 5-day spa (2 hr/day), exercise (30 min/day) and education (45 min/day) or to usual care. The primary outcome was the percentage of patients returning to work at 1 year after randomization. Secondary outcomes were pain, disability and health-related quality of life at 1 year and number of sick leave days from 6 to 12 months. The projected recruitment was not achieved. Only 88/700 (12.6%) patients planned were enrolled: 45 in the spa therapy group and 43 in the usual care group. At 1 year, returning to work was 56.3% versus 41.9% (OR 1.69 [95% CI 0.60–4.73], p = 0.32) respectively. There was no significant difference for any of the secondary outcomes. However, our study lacked power.


PLOS ONE | 2011

McMaster-Toronto Arthritis Patient Preference Disability Questionnaire Sensitivity to Change in Low Back Pain: Influence of Shifts in Priorities

Katherine Sanchez; Agathe Papelard; Christelle Nguyen; Imad Bendeddouche; Marylène Jousse; François Rannou; M. Revel; Serge Poiraudeau


Annals of Physical and Rehabilitation Medicine | 2010

Impact of self-care programs for lower limb osteoarthritis and influence of patients' beliefs

Emmanuel Coudeyre; Katherine Sanchez; François Rannou; Serge Poiraudeau; M.M. Lefevre-Colau

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Serge Poiraudeau

Paris Descartes University

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Christelle Nguyen

Paris Descartes University

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Clémence Palazzo

Paris Descartes University

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Luc Mouthon

Paris Descartes University

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Alexandra Roren

Paris Descartes University

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Alice Bérezné

Paris Descartes University

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A. Feydy

Paris Descartes University

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