Bispectral Index-Guided Propofol Sedation During Endoscopic Retrograde Cholangiopancreatography (BIS-ERCP)
Effect of Bispectral Index (BIS) Monitoring on Postoperative Recovery Profile and Complications in Patients Undergoing Endoscopic Retrograde Cholangiopancreatography (ERCP) Under Deep Sedation: A Randomized Controlled Trial
Endoscopic retrograde cholangiopancreatography (ERCP) requires deep sedation, and propofol is commonly used because of its rapid onset and recovery, but it has a narrow therapeutic window, especially in elderly patients. Bispectral index (BIS) monitoring provides an objective, electroencephalography (EEG)-based measure of sedation depth. This prospective, randomized, single-blind study compares BIS-guided titration of propofol infusion (target BIS 40-60) with standard clinical titration in elderly patients (65 years and older, American Society of Anesthesiologists (ASA) physical status III) undergoing ERCP, with respect to total anesthetic consumption, recovery time, hemodynamic and respiratory complications, and endoscopist satisfaction.
Descripción general del estudio
Estado
Estado
Condiciones
Condiciones
Intervención / Tratamiento
Intervención / Tratamiento
Descripción detallada
Patients aged 65 years and older, American Society of Anesthesiologists (ASA) physical status III, scheduled for endoscopic retrograde cholangiopancreatography (ERCP) under deep sedation will be randomized 1:1 using sealed envelopes to a bispectral index (BIS)-guided group or a standard care group. All patients receive standardized induction with intravenous (IV) midazolam 0.01 mg/kg, fentanyl 25 mcg and propofol 0.5 mg/kg, followed by a propofol infusion of 50-150 mcg/kg/min.
In the BIS group, the infusion rate is titrated to maintain BIS between 40 and 60, with additional low-dose propofol boluses when needed. In the standard group, BIS electrodes are attached and values are recorded blindly, but the monitor screen is hidden from the anesthesia team; the infusion rate is titrated according to heart rate, blood pressure, peripheral oxygen saturation (SpO2) and clinical signs (patient movement, gagging, swallowing).
ERCP is performed by a single experienced gastroenterologist blinded to group allocation. Heart rate, mean arterial pressure and SpO2 are recorded before and after induction, at 5, 10 and 15 minutes and at the end of the procedure. Recovery is assessed in the post-anesthesia care unit (PACU) using the Modified Aldrete Score.
Tipo de estudio
Tipo de estudio
Inscripción (Estimado)
Inscripción
Fase
Fase
- No aplica
Contactos y Ubicaciones
Ubicaciones de estudio
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Van, Turquía (Türkiye)
- University of Health Sciences, Van Training and Research Hospital
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Contacto:
- Ömer Türk, MD
- Número de teléfono: +90 506 979 41 95
- Correo electrónico: omer_turk@hotmail.com
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Investigador principal:
- Ömer Türk, MD
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Sub-Investigador:
- Sebat İldoğan, MD
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Sub-Investigador:
- Cemal Kaçar, MD
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Criterios de participación
Criterio de elegibilidad
Criterio de elegibilidad
Edades elegibles para estudiar
Acepta Voluntarios Saludables
Géneros elegibles para el estudio
Descripción
Inclusion Criteria:
- Age 65 years or older
- American Society of Anesthesiologists (ASA) physical status III
- Scheduled for endoscopic retrograde cholangiopancreatography (ERCP) under sedation
- Written informed consent obtained from the patient or legal guardian
Exclusion Criteria:
- Refusal to participate or to sign the informed consent form
- Known allergy or hypersensitivity to propofol, midazolam, fentanyl, or to egg or soy components
- Advanced dementia, Alzheimer's disease, prior major cerebrovascular event (stroke), severe cognitive dysfunction or active neurological disease that may affect bispectral index (BIS) measurements
- Local infection, wound, burn or anatomical deformity of the forehead preventing proper placement of BIS electrodes
- ASA IV or higher, hemodynamic instability (shock) or need for active resuscitation before the procedure
- Severe hearing or speech impairment or psychiatric disease preventing assessment with clinical recovery scales
Plan de estudios
¿Cómo está diseñado el estudio?
Detalles de diseño
- Propósito principal: Cuidados de apoyo
- Asignación: Aleatorizado
- Modelo Intervencionista: Asignación paralela
- Enmascaramiento: Único
Número de brazos
Armas e Intervenciones
Grupo de participantes/brazoGrupo de participantes/brazo |
Intervención / TratamientoIntervención / Tratamiento |
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Experimental: BIS-Guided Sedation
Propofol infusion during ERCP is titrated to a target BIS of 40-60 using real-time bispectral index monitoring. |
After standardized induction (midazolam 0.01 mg/kg, fentanyl 25 mcg, propofol 0.5 mg/kg IV), the propofol infusion (50-150 mcg/kg/min) is titrated according to real-time bispectral index (BIS) values to maintain a target BIS of 40-60, with additional low-dose propofol boluses when needed. |
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Comparador activo: Standard Clinical Sedation
Propofol infusion during ERCP is titrated according to standard monitoring and clinical signs; BIS values are recorded but hidden from the anesthesia team. |
After the same standardized induction, the propofol infusion (50-150 mcg/kg/min) is titrated according to standard monitoring (heart rate, blood pressure, SpO2) and clinical signs (movement, gagging, swallowing). BIS electrodes are attached and values are recorded, but the BIS screen is hidden from the anesthesia team. |
¿Qué mide el estudio?
Medidas de resultado primarias
Medidas de resultado primarias
Medida de resultado |
Medida Descripción |
Periodo de tiempo |
|---|---|---|
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Total Propofol Consumption
Periodo de tiempo: From induction of sedation to the end of the ERCP procedure
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Total amount of propofol (mg) administered during the endoscopic retrograde cholangiopancreatography (ERCP) procedure, including induction, infusion and additional boluses. |
From induction of sedation to the end of the ERCP procedure
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Medidas de resultado secundarias
Medidas de resultado secundarias
Medida de resultado |
Medida Descripción |
Periodo de tiempo |
|---|---|---|
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Gastroenterologist Satisfaction
Periodo de tiempo: Immediately after the end of the ERCP procedure
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Procedural comfort and satisfaction rated by the gastroenterologist, who is blinded to group allocation, on a 5-point Likert scale (1 = very poor, 5 = very good). |
Immediately after the end of the ERCP procedure
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Heart Rate
Periodo de tiempo: Periprocedural: before induction, after induction, at 5, 10 and 15 minutes of the procedure, and at the end of the procedure
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Heart rate (beats per minute) measured by standard electrocardiographic monitoring. |
Periprocedural: before induction, after induction, at 5, 10 and 15 minutes of the procedure, and at the end of the procedure
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Incidence of Sedation-Related Complications
Periodo de tiempo: From induction of sedation to the end of the ERCP procedure
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Number of participants with hypoxia (peripheral oxygen saturation, SpO2 < 90%), hypotension (mean arterial pressure < 65 mmHg or > 20% decrease from baseline) or bradycardia (heart rate < 50 beats per minute) during the procedure. |
From induction of sedation to the end of the ERCP procedure
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Number of Additional Propofol Boluses
Periodo de tiempo: From induction of sedation to the end of the ERCP procedure
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Number of additional propofol bolus doses given for signs of inadequate sedation (gagging, swallowing, patient movement) during the procedure. |
From induction of sedation to the end of the ERCP procedure
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Time to Discharge Readiness From the Post-Anesthesia Care Unit
Periodo de tiempo: From the end of the procedure, up to 2 hours
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Time (minutes) from the end of the procedure until the patient meets post-anesthesia care unit (PACU) discharge criteria according to the Modified Aldrete Score. |
From the end of the procedure, up to 2 hours
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Need for Airway Intervention
Periodo de tiempo: From induction of sedation to the end of the ERCP procedure
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Number of participants requiring any airway intervention during sedation, recorded by the highest level required: chin lift/jaw thrust, bag-mask ventilation, insertion of an oral/nasal airway or supraglottic device, or endotracheal intubation. |
From induction of sedation to the end of the ERCP procedure
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Mean Arterial Pressure
Periodo de tiempo: Periprocedural: before induction, after induction, at 5, 10 and 15 minutes of the procedure, and at the end of the procedure
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Mean arterial pressure (millimeters of mercury, mmHg) measured by non-invasive blood pressure monitoring. |
Periprocedural: before induction, after induction, at 5, 10 and 15 minutes of the procedure, and at the end of the procedure
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Peripheral Oxygen Saturation
Periodo de tiempo: Periprocedural: before induction, after induction, at 5, 10 and 15 minutes of the procedure, and at the end of the procedure
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Peripheral oxygen saturation (SpO2, percentage) measured by pulse oximetry. |
Periprocedural: before induction, after induction, at 5, 10 and 15 minutes of the procedure, and at the end of the procedure
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Colaboradores e Investigadores
Patrocinador
Patrocinador
Publicaciones y enlaces útiles
Publicaciones Generales
- Kamel Y, Sasa N, Naguib M, Yassen KA, Sayed E. Bispectral Index Guidance Reduced Target Plasma Propofol Concentration During ERCP in Patients with Liver Cirrhosis. Turk J Anaesthesiol Reanim. 2024 Oct 30;52(5):169-179. doi: 10.4274/TJAR.2024.241635.
- Inal FY, Daskaya H, Yilmaz Y, Kocoglu H. Evaluation of bispectral index monitoring efficacy in endoscopic patients who underwent retrograde cholangiopancreatography and received sedoanalgesia. Wideochir Inne Tech Maloinwazyjne. 2020 Jun;15(2):358-365. doi: 10.5114/wiitm.2020.93461. Epub 2020 Mar 4.
Fechas de registro del estudio
Fechas importantes del estudio
Inicio del estudio (Estimado)
Inicio del estudio
Finalización primaria (Estimado)
Finalización primaria
Finalización del estudio (Estimado)
Finalización del estudio
Fechas de registro del estudio
Enviado por primera vez
Enviado por primera vez
Primero enviado que cumplió con los criterios de control de calidad
Primero enviado que cumplió con los criterios de control de calidad
Publicado por primera vez (Actual)
Publicado por primera vez
Actualizaciones de registros de estudio
Última actualización publicada (Actual)
Última actualización publicada
Última actualización enviada que cumplió con los criterios de control de calidad
Última actualización enviada que cumplió con los criterios de control de calidad
Última verificación
Última verificación
Más información
Términos relacionados con este estudio
Palabras clave
Otros números de identificación del estudio
Otros números de identificación del estudio
- 2026/07-01
Plan de datos de participantes individuales (IPD)
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Descripción del plan IPD
Individual participant data will not be shared publicly. De-identified data may be made available by the corresponding author upon reasonable request.
Información sobre medicamentos y dispositivos, documentos del estudio
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