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        "resumen" => "<span class="elsevierStyleSectionTitle">Objectives</span><p id="spar0005" class="elsevierStyleSimplePara elsevierViewall"><span class="elsevierStyleItalic">T</span>o characterize a cohort of early spondyloarthritis &#40;SpA&#41; patients&#44; to demonstrate the usefulness of enthesis ultrasonography for the diagnosis and follow up&#44; and to develop a statistical model to predict persitent activity&#46;</p> <span class="elsevierStyleSectionTitle">Patients and methods</span><p id="spar0010" class="elsevierStyleSimplePara elsevierViewall">A 1 year prospective study with clinical&#44; radiological and ultrasonographic evaluations was performed in patients with SpA from the Pilot Study for the Referral of Patients with Early SpA &#40;ESPIDEP&#41;&#46; Enthesis ultrasonography was explored by the MAdrid Sonographic Enthesis Index &#40;MASEI&#41;&#44; and its diagnostic utility was determined to be a cutoff score of &#8805;18 points&#46; The clinical&#44; radiological and MASEI scores were studied&#46; Finally&#44; a statistical model from factors predicting persitent activity was developed&#46;</p> <span class="elsevierStyleSectionTitle">Results</span><p id="spar0015" class="elsevierStyleSimplePara elsevierViewall">A 1 year follow-up of 32 patients was carried out&#46; The baseline MASEI reached a sensitivity and specificity of 78&#46;12&#37; and 84&#46;37&#37; respectively&#44; positive and negative predictive value was 83&#46;3&#37; and 79&#46;41&#37; respectively&#44; and positive and negative likelihood ratios were 5 and 0&#46;26&#44; respectively&#46; The improvement of BASMI and the MASEI scores were significant &#40;P&#61;&#46;001 and P&#61;&#46;007&#44; respectively&#41;&#46; From the beginning&#44; women had more peripheral affectation&#44; and men had higher axial radiological progression and higher CRP &#40;P&#60;&#46;05&#41;&#46; The statistical model that best predicted persitent activity was constituted by nocturnal back pain&#44; BASDAI and CRP&#46;</p> <span class="elsevierStyleSectionTitle">Conclusions</span><p id="spar0020" class="elsevierStyleSimplePara elsevierViewall">Enthesis ultrasonography can be useful when begining the evaluation and follow-up of early SpA&#46; Disease patterns are different according to sex&#46; The ability to predict persitent activity in early stages supports the use of more intensive treatments</p>"
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        "resumen" => "<span class="elsevierStyleSectionTitle">Objetivos</span><p id="spar0025" class="elsevierStyleSimplePara elsevierViewall">Caracterizar a una cohorte de pacientes con espondiloartritis &#40;SpA&#41; precoz&#44; demostrar la utilidad de la ecograf&#237;a de entesis en el diagn&#243;stico y seguimiento&#44; y desarrollar un modelo para predecir actividad persistente&#46;</p> <span class="elsevierStyleSectionTitle">Pacientes y m&#233;todos</span><p id="spar0030" class="elsevierStyleSimplePara elsevierViewall">Estudio prospectivo a 1 a&#241;o de los pacientes con SpA del EStudio PIloto de Derivaci&#243;n de pacientes con Espondiloartritis Precoz &#40;ESPIDEP&#41;&#46; Se llev&#243; a cabo una evaluaci&#243;n cl&#237;nica&#44; radiol&#243;gica y ecogr&#225;fica&#46; La ecogr&#225;fica de entesis se realiz&#243; con el MAdrid Sonographic Enthesis Index &#40;MASEI&#41;&#44; y su utilidad diagn&#243;stica se determin&#243; con el punto de corte &#8805; 18&#46; Se examin&#243; la evoluci&#243;n cl&#237;nica&#44; radiol&#243;gica y del MASEI&#46; Finalmente se desarroll&#243; un modelo a partir de los factores que predicen actividad persistente&#46;</p> <span class="elsevierStyleSectionTitle">Resultados</span><p id="spar0035" class="elsevierStyleSimplePara elsevierViewall">Se realiz&#243; el seguimiento durante 1 a&#241;o a 32 pacientes&#46; El MASEI basal alcanz&#243; una sensibilidad y especificidad de 78&#44;12&#37; y 83&#44;37&#37;&#44; un valor predictivo positivo y negativo del 83&#44;3&#37; y el 79&#44;41&#37;&#44; y una raz&#243;n de verosimilitud positiva y negativa de 5 y 0&#44;26&#44; respectivamente&#46; La mejor&#237;a del BASMI y el MASEI fue significativa &#40;p<span class="elsevierStyleHsp" style=""></span>&#61;<span class="elsevierStyleHsp" style=""></span>0&#44;001 y p<span class="elsevierStyleHsp" style=""></span>&#61;<span class="elsevierStyleHsp" style=""></span>0&#44;007&#44; respectivamente&#41;&#46; Las mujeres tuvieron m&#225;s afectaci&#243;n perif&#233;rica desde el inicio y los hombres mayor progresi&#243;n radiol&#243;gica axial y PCR m&#225;s elevada &#40;p<span class="elsevierStyleHsp" style=""></span>&#60;<span class="elsevierStyleHsp" style=""></span>0&#44;05&#41;&#46; El modelo que mejor predijo actividad persistente estaba formado por dolor axial nocturno&#44; BASDAI y PCR&#46;</p> <span class="elsevierStyleSectionTitle">Conclusiones</span><p id="spar0040" class="elsevierStyleSimplePara elsevierViewall">La ecograf&#237;a de entesis puede ser &#250;til en la evaluaci&#243;n inicial y el seguimiento de las SpA precoces&#46; El patr&#243;n de enfermedad difiere seg&#250;n el sexo&#46; Predecir actividad persistente en estadios precoces apoya la utilizaci&#243;n de tratamientos m&#225;s intensivos&#46;</p>"
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Vol. 7. Issue 4.
Pages 230-235 (July - August 2011)
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Vol. 7. Issue 4.
Pages 230-235 (July - August 2011)
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One year clinical and ultrasonographic follow up of the Pilot Study for the Referral of Patients with Early Spondyloarthritis (ESPIDEP)
Seguimiento clínico y ecográfico a 1 año del EStudio PIloto de Derivación de pacientes con Espondiloartritis Precoz (ESPIDEP)
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Tatiana Cobo-Ibáñeza,
Corresponding author
mtatiana.cobo@salud.madrid.org

Corresponding author. Sección de Reumatología, Hospital Infanta Sofía, Paseo de Europa, 34, San Sebastián de los Reyes, 28702 Madrid, Spain.
, Santiago Muñoz-Fernándeza, Eugenio De Miguelb, Jesús Díez Sebastiánc, Martina Steinera, Emilio Martín-Molab
a Sección de Reumatología, Hospital Infanta Sofía, San Sebastián de los Reyes, Madrid, Spain
b Servicio de Reumatología, Hospital Universitario La Paz, Madrid, Spain
c Sección de Bioestadística, Hospital Universitario La Paz, Universidad Autónoma de Madrid, Madrid, Spain
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Article information
Abstract
Objectives

To characterize a cohort of early spondyloarthritis (SpA) patients, to demonstrate the usefulness of enthesis ultrasonography for the diagnosis and follow up, and to develop a statistical model to predict persitent activity.

Patients and methods

A 1 year prospective study with clinical, radiological and ultrasonographic evaluations was performed in patients with SpA from the Pilot Study for the Referral of Patients with Early SpA (ESPIDEP). Enthesis ultrasonography was explored by the MAdrid Sonographic Enthesis Index (MASEI), and its diagnostic utility was determined to be a cutoff score of ≥18 points. The clinical, radiological and MASEI scores were studied. Finally, a statistical model from factors predicting persitent activity was developed.

Results

A 1 year follow-up of 32 patients was carried out. The baseline MASEI reached a sensitivity and specificity of 78.12% and 84.37% respectively, positive and negative predictive value was 83.3% and 79.41% respectively, and positive and negative likelihood ratios were 5 and 0.26, respectively. The improvement of BASMI and the MASEI scores were significant (P=.001 and P=.007, respectively). From the beginning, women had more peripheral affectation, and men had higher axial radiological progression and higher CRP (P<.05). The statistical model that best predicted persitent activity was constituted by nocturnal back pain, BASDAI and CRP.

Conclusions

Enthesis ultrasonography can be useful when begining the evaluation and follow-up of early SpA. Disease patterns are different according to sex. The ability to predict persitent activity in early stages supports the use of more intensive treatments

Keywords:
Spondylarthritis
Ultrasonography
Doppler ultrasonography
Enthesopathy
Statistical models
Resumen
Objetivos

Caracterizar a una cohorte de pacientes con espondiloartritis (SpA) precoz, demostrar la utilidad de la ecografía de entesis en el diagnóstico y seguimiento, y desarrollar un modelo para predecir actividad persistente.

Pacientes y métodos

Estudio prospectivo a 1 año de los pacientes con SpA del EStudio PIloto de Derivación de pacientes con Espondiloartritis Precoz (ESPIDEP). Se llevó a cabo una evaluación clínica, radiológica y ecográfica. La ecográfica de entesis se realizó con el MAdrid Sonographic Enthesis Index (MASEI), y su utilidad diagnóstica se determinó con el punto de corte ≥ 18. Se examinó la evolución clínica, radiológica y del MASEI. Finalmente se desarrolló un modelo a partir de los factores que predicen actividad persistente.

Resultados

Se realizó el seguimiento durante 1 año a 32 pacientes. El MASEI basal alcanzó una sensibilidad y especificidad de 78,12% y 83,37%, un valor predictivo positivo y negativo del 83,3% y el 79,41%, y una razón de verosimilitud positiva y negativa de 5 y 0,26, respectivamente. La mejoría del BASMI y el MASEI fue significativa (p=0,001 y p=0,007, respectivamente). Las mujeres tuvieron más afectación periférica desde el inicio y los hombres mayor progresión radiológica axial y PCR más elevada (p<0,05). El modelo que mejor predijo actividad persistente estaba formado por dolor axial nocturno, BASDAI y PCR.

Conclusiones

La ecografía de entesis puede ser útil en la evaluación inicial y el seguimiento de las SpA precoces. El patrón de enfermedad difiere según el sexo. Predecir actividad persistente en estadios precoces apoya la utilización de tratamientos más intensivos.

Palabras clave:
Espondiloartritis
Ecografía
Ecografía Doppler
Entesopatía
Modelos estadísticos
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