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- Registro de ensayos clínicos de EE. UU.
- Ensayo clínico NCT07662408
Comparison of Norepinehrine Versus Phenylepherine Infusion for Prevention of Post-spinal Hypotension
Comparison of Norepinephrine Versus Phenylephrine Infusion for Prevention of Hypotension Due to Subarachnoid Block in Elderly Patients Undergoing Orthopedic Hip Surgery:A Prospective Randomized Trial
Descripción general del estudio
Estado
Condiciones
Intervención / Tratamiento
Descripción detallada
Spinal anesthesia-induced hypotension is a common and clinically significant complication in elderly patients undergoing orthopedic hip surgery. Age-related physiological changes, impaired autonomic responses, and reduced cardiovascular reserve increase susceptibility to hypotension after subarachnoid block, which may result in organ hypoperfusion, myocardial ischemia, nausea, vomiting, and increased perioperative morbidity.
Phenylephrine is traditionally used for prevention and treatment of spinal anesthesia-induced hypotension because of its potent alpha-adrenergic vasoconstrictive effect. However, its use may be associated with reflex bradycardia and reduction in cardiac output. Norepinephrine, which possesses both alpha-adrenergic and mild beta-adrenergic activity, may provide better maintenance of heart rate and cardiac output while effectively preserving blood pressure.
This prospective randomized double-blinded clinical trial will be conducted at the Department of Anesthesia, Intensive Care and Pain Management, Sohag University Hospitals, after approval from the Institutional Ethics Committee. Elderly patients aged 60 years or older, classified as ASA physical status I-III and scheduled for elective orthopedic hip surgery under spinal anesthesia, will be enrolled after obtaining written informed consent.
Tipo de estudio
Inscripción (Estimado)
Fase
- Fase 4
Contactos y Ubicaciones
Estudio Contacto
- Nombre: Ahmed Abdelhamed Faress, Resident
- Número de teléfono: 01065080913
- Correo electrónico: drahmedfaress23896@gmail.com
Copia de seguridad de contactos de estudio
- Nombre: Fawzy Abbas Badawy, Professor
Ubicaciones de estudio
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Sohag, Egipto
- Reclutamiento
- Sohag university hospital
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Contacto:
- Mohamed N Hamdoun, Professor
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Criterios de participación
Criterio de elegibilidad
Edades elegibles para estudiar
- Adulto
- Adulto Mayor
Acepta Voluntarios Saludables
Descripción
Inclusion Criteria:
- Age 60 years or older.
- ASA physical status I-III.
- Scheduled for elective hip surgery under subarachnoid block.
- Willing to provide written informed consent.
Exclusion Criteria:
- Patient refusal.
- Contraindications to subarachnoid block.
- Severe cardiac disease.
- Uncontrolled hypertension.
- Allergy to study drugs.
- Emergency surgery.
- Monoamine oxidase inhibitor use.
- Cognitive impairment preventing informed consent.
Plan de estudios
¿Cómo está diseñado el estudio?
Detalles de diseño
- Propósito principal: Prevención
- Asignación: Aleatorizado
- Modelo Intervencionista: Asignación paralela
- Enmascaramiento: Doble
Armas e Intervenciones
Grupo de participantes/brazo |
Intervención / Tratamiento |
|---|---|
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Experimental: Norepinehrine group
• NE group: norepinephrine infusion at 8 µg/min.
Infusion will continue for 45 minutes after spinal anesthesia.
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norepinephrine infusion at 8 µg/min.
Infusion will continue for 45 minutes after spinal anesthesia.
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Experimental: Phenylepherine group
PhE group: phenylephrine infusion at 100 µg/min Infusion will continue for 45 minutes after spinal anesthesia.
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phenylephrine infusion at 100 µg/min.
Infusion will continue for 45 minutes after spinal anesthesia.
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¿Qué mide el estudio?
Medidas de resultado primarias
Medida de resultado |
Medida Descripción |
Periodo de tiempo |
|---|---|---|
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Mean intaroperative heart rate (beats /minute) during vasopressor infusion measured by continous electrocardiogrammonitoring
Periodo de tiempo: From the start of subarachnoid block until the end of surgery .
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Heart rate will be continously monitored using standar electrocardiogram monitoring.
to compare the effect of norepinephrine versus phenylephrine infusion on hemodynamics.
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From the start of subarachnoid block until the end of surgery .
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Medidas de resultado secundarias
Medida de resultado |
Medida Descripción |
Periodo de tiempo |
|---|---|---|
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Incidence of spinal anesthesia-induced hypotension
Periodo de tiempo: From the administration of spinal anesthesia until the end of the procedure.
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Defined as a decrease in mean arterial pressure (MAP) to <80% of baseline measurd by non-invasive blood pressure monitoring .
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From the administration of spinal anesthesia until the end of the procedure.
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Incidence of bradycardia
Periodo de tiempo: Throughout the intraoperative period
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Defined as heart rate ≤ 50 beats/min.
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Throughout the intraoperative period
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Mean arterial pressure (MAP) trends measured using non-invasive blood pressure monitoring
Periodo de tiempo: Every 5 minutes from the start of spinal anesthesia until the end of surgery.
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Monitoring the stability of blood pressure during vasopressor infusion
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Every 5 minutes from the start of spinal anesthesia until the end of surgery.
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Incidence of reactive hypertension measured by non-invasive blood pressure monitoring
Periodo de tiempo: From the start of vasopressor infusion until the end of surgery.
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Defined as mean arterial pressure (MAP) > 125% of baseline.
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From the start of vasopressor infusion until the end of surgery.
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Total intraoperative intavenous fluid
Periodo de tiempo: At the end of the surgical procedure.
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Total volume of intravenous fluids administered in milliliters
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At the end of the surgical procedure.
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Colaboradores e Investigadores
Patrocinador
Fechas de registro del estudio
Fechas importantes del estudio
Inicio del estudio (Actual)
Finalización primaria (Estimado)
Finalización del estudio (Estimado)
Fechas de registro del estudio
Enviado por primera vez
Primero enviado que cumplió con los criterios de control de calidad
Publicado por primera vez (Actual)
Actualizaciones de registros de estudio
Última actualización publicada (Actual)
Última actualización enviada que cumplió con los criterios de control de calidad
Última verificación
Más información
Términos relacionados con este estudio
Palabras clave
Términos MeSH relevantes adicionales
Otros números de identificación del estudio
- Soh-Med-26-5-9MS
Información sobre medicamentos y dispositivos, documentos del estudio
Estudia un producto farmacéutico regulado por la FDA de EE. UU.
Estudia un producto de dispositivo regulado por la FDA de EE. UU.
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