Phenylephrine Versus Norepinephrine in Ophthalmic Surgery

NCT ID: NCT01609491

Last Updated: 2024-04-18

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

60 participants

Study Classification

INTERVENTIONAL

Study Start Date

2012-01-31

Study Completion Date

2012-12-31

Brief Summary

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In ophthalmic surgery the specific anaesthesiological challenges necessitate the administration of a combination of relatively high doses of hypnotics and analgetics. In order to preserve adequate organ perfusion, there is often a need to administer pharmacological agents for haemodynamic support. Depending on the experience of the anaesthetist a continuous infusion of phenylephrine or norepinephrine is used. It is currently not known which of these agents has the most favorable haemodynamical profile.

Haemodynamic parameters (continuous blood pressure, cardiac index, stroke volume and systemic resistance), peripheral tissue oxygenation and cerebral tissue oxygenation will be monitored noninvasively using the Nexfin® , Inspectra®, and Foresight® and O2C® monitoring devices.

Detailed Description

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Conditions

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Bloodpressure

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

SINGLE_GROUP

Primary Study Purpose

TREATMENT

Blinding Strategy

DOUBLE

Participants Caregivers

Study Groups

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phenylephrine

If the mean arterial pressure drops below 20% of the baseline value and/or below 90 mmHg, a syringe pump with phenylephrine will be started. The anaesthetist will be blinded for the type of vasopressor. Concentrations phenylephrine (20 µg /ml) will be used in the syringes

Group Type ACTIVE_COMPARATOR

phenylephrine

Intervention Type DRUG

If the mean arterial pressure drops below 20% of the baseline value and/or below 90 mmHg, a syringe pump with phenylephrine or norepinephrine (depending on randomisation) will be started. The anaesthetist will be blinded for the type of vasopressor. Concentrations phenylephrine (20 µg /ml) of Norepinephrine (10 µg/ml) will be used in the syringes

norepinephrine

If the mean arterial pressure drops below 20% of the baseline value and/or below 90 mmHg, a syringe pump with norepinephrine (depending on randomisation) will be started. The anaesthetist will be blinded for the type of vasopressor. Concentrations Norepinephrine (10 µg/ml) will be used in the syringes

Group Type ACTIVE_COMPARATOR

norepinephrine

Intervention Type DRUG

If the mean arterial pressure drops below 20% of the baseline value and/or below 90 mmHg, a syringe pump with norepinephrine (depending on randomisation) will be started. The anaesthetist will be blinded for the type of vasopressor. Concentrations Norepinephrine (10 µg/ml) will be used in the syringes

Interventions

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phenylephrine

If the mean arterial pressure drops below 20% of the baseline value and/or below 90 mmHg, a syringe pump with phenylephrine or norepinephrine (depending on randomisation) will be started. The anaesthetist will be blinded for the type of vasopressor. Concentrations phenylephrine (20 µg /ml) of Norepinephrine (10 µg/ml) will be used in the syringes

Intervention Type DRUG

norepinephrine

If the mean arterial pressure drops below 20% of the baseline value and/or below 90 mmHg, a syringe pump with norepinephrine (depending on randomisation) will be started. The anaesthetist will be blinded for the type of vasopressor. Concentrations Norepinephrine (10 µg/ml) will be used in the syringes

Intervention Type DRUG

Eligibility Criteria

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Inclusion Criteria

Patients requiring general anaesthesia for ophthalmic surgery.

* Age \> 18 years and older
* Diabetes or cardiovascular disease or age \>55 years

Exclusion Criteria

* Patient refusal
* Patient \< 18 years
Minimum Eligible Age

18 Years

Maximum Eligible Age

55 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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University Medical Center Groningen

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Alain Kalmar, Dr

Role: PRINCIPAL_INVESTIGATOR

Anesthesiology

Locations

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University Medical Center Groningen

Groningen, , Netherlands

Site Status

Countries

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Netherlands

Other Identifiers

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PheNor-001

Identifier Type: -

Identifier Source: org_study_id

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