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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
Studie Overzicht
Toestand
Conditie
Interventie / Behandeling
Gedetailleerde beschrijving
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.
Studietype
Inschrijving (Geschat)
Fase
- Fase 4
Contacten en locaties
Studiecontact
- Naam: Ahmed Abdelhamed Faress, Resident
- Telefoonnummer: 01065080913
- E-mail: drahmedfaress23896@gmail.com
Studie Contact Back-up
- Naam: Fawzy Abbas Badawy, Professor
Studie Locaties
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Sohag, Egypte
- Werving
- Sohag university hospital
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Contact:
- Mohamed N Hamdoun, Professor
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Deelname Criteria
Geschiktheidscriteria
Leeftijden die in aanmerking komen voor studie
- Volwassen
- Oudere volwassene
Accepteert gezonde vrijwilligers
Beschrijving
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.
Studie plan
Hoe is de studie opgezet?
Ontwerpdetails
- Primair doel: Preventie
- Toewijzing: Gerandomiseerd
- Interventioneel model: Parallelle opdracht
- Masker: Dubbele
Wapens en interventies
Deelnemersgroep / Arm |
Interventie / Behandeling |
|---|---|
|
Experimenteel: 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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Experimenteel: 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.
|
Wat meet het onderzoek?
Primaire uitkomstmaten
Uitkomstmaat |
Maatregel Beschrijving |
Tijdsspanne |
|---|---|---|
|
Mean intaroperative heart rate (beats /minute) during vasopressor infusion measured by continous electrocardiogrammonitoring
Tijdsspanne: 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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Secundaire uitkomstmaten
Uitkomstmaat |
Maatregel Beschrijving |
Tijdsspanne |
|---|---|---|
|
Incidence of spinal anesthesia-induced hypotension
Tijdsspanne: 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
Tijdsspanne: 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
Tijdsspanne: 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
Tijdsspanne: 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
Tijdsspanne: 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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Medewerkers en onderzoekers
Sponsor
Studie record data
Bestudeer belangrijke data
Studie start (Werkelijk)
Primaire voltooiing (Geschat)
Studie voltooiing (Geschat)
Studieregistratiedata
Eerst ingediend
Eerst ingediend dat voldeed aan de QC-criteria
Eerst geplaatst (Werkelijk)
Updates van studierecords
Laatste update geplaatst (Werkelijk)
Laatste update ingediend die voldeed aan QC-criteria
Laatst geverifieerd
Meer informatie
Termen gerelateerd aan deze studie
Aanvullende relevante MeSH-voorwaarden
Andere studie-ID-nummers
- Soh-Med-26-5-9MS
Informatie over medicijnen en apparaten, studiedocumenten
Bestudeert een door de Amerikaanse FDA gereguleerd geneesmiddel
Bestudeert een door de Amerikaanse FDA gereguleerd apparaatproduct
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