Puborectalis Syndrome as a Phenotype of Dyssynergic Defecation in Chronic Constipation: a Comparative Study of Defecography,High-resolution Anorectal Manometry, and Pelvic Floor Ultrasound
28 de junio de 2026 actualizado por: Weidong Tong, Third Military Medical University
Patients with suspected DD who met the Rome IV criteria were divided into the DD group and other types of constipation groups.
The differences between the two groups were analyzed to explore the precise diagnostic scheme for DD.
Descripción general del estudio
Estado
Terminado
Intervención / Tratamiento
Descripción detallada
This study was conducted solely at the Army Specialized Medical Center and was a single-center, bidirectional cohort study.
Patients with suspected dyssynergic defecation who visited the constipation specialty clinic of Daping Hospital were collected.
After the patients signed the informed consent form, they were asked to fill out the questionnaire (general clinical data questionnaire, Wexner constipation rating scale, ODS rating scale, and constipation patient quality of life scale (PAC-QOL)).
The baseline data of the patients (such as age, gender, symptoms, constipation scale scores, intestinal satisfaction scores, etc.) and the results of anorectal manometry, defecography, and perineal ultrasound were statistically analyzed.
Patients meeting the Rome IV criteria were grouped through DFG, ARM, and pelvic floor ultrasound examination.
The differences in clinical main symptoms, constipation scores, defecography, perineal ultrasound, etc. between the two groups were observed, and the roles and correlations of each parameter in diagnosis were analyzed.
Tipo de estudio
De observación
Inscripción (Actual)
164
Contactos y Ubicaciones
Esta sección proporciona los datos de contacto de quienes realizan el estudio e información sobre dónde se lleva a cabo este estudio.
Ubicaciones de estudio
-
-
Chongqing Municipality
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Yuzhong, Chongqing Municipality, Porcelana, 400042
- Army Medical Center (Daping Hospital)
-
-
Criterios de participación
Los investigadores buscan personas que se ajusten a una determinada descripción, denominada criterio de elegibilidad. Algunos ejemplos de estos criterios son el estado de salud general de una persona o tratamientos previos.
Criterio de elegibilidad
Edades elegibles para estudiar
- Niño
- Adulto
- Adulto Mayor
Acepta Voluntarios Saludables
No
Método de muestreo
Muestra de probabilidad
Población de estudio
patients with suspected PRS-related DD
Descripción
Inclusion Criteria:
- Age ranges from 16 to 85 years old.
- Constipation patients should meet the Rome Ⅳ criteria for chronic constipation (must include two or more of the following: ① At least 25% of bowel movements are strenuous; ② At least 25% of bowel movements are lumpy or hard stools; ③ At least 25% of bowel movements are accompanied by a sense of incomplete evacuation; ④ At least 25% of bowel movements are associated with a feeling of anorectal obstruction or blockage; ⑤ At least 25% of bowel movements require manual assistance; ⑥ Fewer than 3 bowel movements per week). The healthy volunteer group has no above - mentioned constipation symptoms.
- Participants should be able to understand and complete relevant questionnaires.
- Participants should be willing to follow the research protocol and sign the informed consent form.
Exclusion Criteria:
- Pregnant women and lactating women
- Suffering from gastrointestinal and other malignant tumors
- Suffering from diseases such as diabetes and Parkinson's disease
- Currently participating in other clinical trials
Plan de estudios
Esta sección proporciona detalles del plan de estudio, incluido cómo está diseñado el estudio y qué mide el estudio.
¿Cómo está diseñado el estudio?
Detalles de diseño
Cohortes e Intervenciones
Grupo / Cohorte |
Intervención / Tratamiento |
|---|---|
|
patients with suspected PRS-related DD
|
Analysis of inter-group differences
|
¿Qué mide el estudio?
Medidas de resultado primarias
Medida de resultado |
Medida Descripción |
Periodo de tiempo |
|---|---|---|
|
Rectal emptying rate，（%）
Periodo de tiempo: Baseline assessment
|
Rectal emptying rate is defined as the reduction in rectal area from pre-evacuation to post-evacuation, expressed as a percentage of the pre-evacuation area, as assessed by defecography.
|
Baseline assessment
|
Medidas de resultado secundarias
Medida de resultado |
Medida Descripción |
Periodo de tiempo |
|---|---|---|
|
Obstructed Defecation Syndrome score，（ODS score）
Periodo de tiempo: Baseline assessment
|
the minimum value is 0,and maximum value is 31; a higher scores mean a worse outcome.
|
Baseline assessment
|
|
Cleveland Clinic Constipation Score,(CCCS)
Periodo de tiempo: Baseline assessment
|
the minimum value is 0,and maximum value is 30; a higher scores mean a worse outcome.
|
Baseline assessment
|
|
Patient Assessment of Constipation Quality of Life total score，（PAC-QOL score）
Periodo de tiempo: Baseline assessment
|
the minimum value is 0,and maximum value is 112; a higher scores mean a worse outcome.
|
Baseline assessment
|
|
Self-Rating Anxiety Scale score，（SAS score）
Periodo de tiempo: Baseline assessment
|
the minimum value is 25,and maximum value is 100; a higher scores mean a worse outcome.
|
Baseline assessment
|
|
Bristol Stool Form Scale score
Periodo de tiempo: Baseline assessment
|
the minimum value is 1,and maximum value is 7; a higher scores mean a worse outcome.
|
Baseline assessment
|
|
Body Mass Index
Periodo de tiempo: Baseline assessment
|
Baseline assessment
|
|
|
Disease duration,(year)
Periodo de tiempo: Baseline assessment
|
Baseline assessment
|
|
|
ARA change on DFG，(°)
Periodo de tiempo: Baseline assessment
|
changes in anorectal angle during defecography
|
Baseline assessment
|
|
Anal canal diameter on DFG，（mm）
Periodo de tiempo: Baseline assessment
|
anal canal diameter during straining on DFG
|
Baseline assessment
|
|
PRS on DFG
Periodo de tiempo: Baseline assessment
|
Puborectalis syndrome indicated by the defecography diagnostic report.
|
Baseline assessment
|
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IRP on DFG
Periodo de tiempo: Baseline assessment
|
Internal rectal prolapse indicated by the defecography diagnostic report.
|
Baseline assessment
|
|
Rectocele on DFG
Periodo de tiempo: Baseline assessment
|
Rectocele indicated by the defecography diagnostic report.
|
Baseline assessment
|
|
Anal Resting Pressure，（mmHg）
Periodo de tiempo: Baseline assessment
|
Anal Resting Pressure measured by High-resolution Anorectal Manometry
|
Baseline assessment
|
|
Anal Squeeze Pressure,(mmHg)
Periodo de tiempo: Baseline assessment
|
Anal Squeeze Pressure measured by High-resolution Anorectal Manometry
|
Baseline assessment
|
|
Rectal propulsive pressure,(mmHg)
Periodo de tiempo: Baseline assessment
|
Rectal propulsive pressure measured by High-resolution Anorectal Manometry
|
Baseline assessment
|
|
Anal relaxation rate,(%)
Periodo de tiempo: Baseline assessment
|
Anal relaxation rate measured by High-resolution Anorectal Manometry during defecation
|
Baseline assessment
|
|
DD on HR-ARM
Periodo de tiempo: Baseline assessment
|
Dyssynergic defecation(DD) reported by high-resolution anorectal manometry parameters, with diagnostic criteria of rectal pressure during straining >45mmHg and anal canal relaxation rate <20%.
|
Baseline assessment
|
|
ARA change on TPUS,(°)
Periodo de tiempo: Baseline assessment
|
changes in anorectal angle during evacuation measured by Transperineal Ultrasound
|
Baseline assessment
|
|
Right PRM thickness change on TPUS,(mm)
Periodo de tiempo: Baseline assessment
|
Changes in right puborectalis muscle thickness during defecation measured by Transperineal Ultrasound
|
Baseline assessment
|
|
Left PRM thickness change on TPUS,(mm)
Periodo de tiempo: Baseline assessment
|
Changes in left puborectalis muscle thickness during defecation measured by Transperineal Ultrasound
|
Baseline assessment
|
|
PRS on TPUS
Periodo de tiempo: Baseline assessment
|
Puborectalis syndrome(PRS) indicated by the transperineal ultrasound diagnostic report
|
Baseline assessment
|
Colaboradores e Investigadores
Aquí es donde encontrará personas y organizaciones involucradas en este estudio.
Patrocinador
Investigadores
- Director de estudio: Weidong Tong, MD, Army Medical Center (Daping Hospital)
Fechas de registro del estudio
Estas fechas rastrean el progreso del registro del estudio y los envíos de resultados resumidos a ClinicalTrials.gov. Los registros del estudio y los resultados informados son revisados por la Biblioteca Nacional de Medicina (NLM) para asegurarse de que cumplan con los estándares de control de calidad específicos antes de publicarlos en el sitio web público.
Fechas importantes del estudio
Inicio del estudio (Actual)
21 de julio de 2023
Finalización primaria (Actual)
31 de mayo de 2026
Finalización del estudio (Actual)
31 de mayo de 2026
Fechas de registro del estudio
Enviado por primera vez
16 de junio de 2026
Primero enviado que cumplió con los criterios de control de calidad
28 de junio de 2026
Publicado por primera vez (Actual)
6 de julio de 2026
Actualizaciones de registros de estudio
Última actualización publicada (Actual)
6 de julio de 2026
Última actualización enviada que cumplió con los criterios de control de calidad
28 de junio de 2026
Última verificación
1 de julio de 2023
Más información
Términos relacionados con este estudio
Palabras clave
Otros números de identificación del estudio
- PRS202409
Plan de datos de participantes individuales (IPD)
¿Planea compartir datos de participantes individuales (IPD)?
NO
Información sobre medicamentos y dispositivos, documentos del estudio
Estudia un producto farmacéutico regulado por la FDA de EE. UU.
No
Estudia un producto de dispositivo regulado por la FDA de EE. UU.
No
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