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Positie van de bovenste extremiteit en intraoculaire druk tijdens spinale anesthesie (UEP-IOP)

25 september 2026 bijgewerkt door: Elazıg Fethi Sekin Sehir Hastanesi

Effect van de positie van de bovenste extremiteit op de intraoculaire druk tijdens spinale anesthesie bij open liesbreukherstel: Een gerandomiseerde gecontroleerde studie

This prospective randomized controlled trial evaluated the effect of two upper extremity positions on intraocular pressure (IOP) in adult patients undergoing surgery under spinal anesthesia. Participants were randomly assigned to either an arms-at-sides position or a hands-on-chest position. IOP was measured in the right eye using an Icare ic200 rebound tonometer at predefined perioperative time points. Hemodynamic parameters, including mean arterial pressure, heart rate, and oxygen saturation, were also recorded. The primary outcome was the change in IOP from baseline to 30 minutes after application of the assigned upper extremity position between the two upper extremity position groups.

Studie Overzicht

Toestand

Voltooid

Conditie

Interventie / Behandeling

Gedetailleerde beschrijving

Intraocular pressure (IOP) may be influenced by systemic hemodynamics, venous return, episcleral venous pressure, and patient positioning. Although the effects of head and body position on IOP have been investigated, the impact of upper extremity positioning during spinal anesthesia has not been clearly established. This prospective randomized controlled trial was conducted at Elazig Fethi Sekin City Hospital. Adult patients scheduled for elective surgery under spinal anesthesia were enrolled. After written informed consent, participants were randomly assigned to one of two upper extremity positions: arms positioned alongside the body or hands positioned on the chest. IOP was measured in the right eye using an Icare ic200 rebound tonometer. Measurements were obtained at baseline before spinal anesthesia, 15 minutes after spinal anesthesia immediately before application of the assigned upper extremity position, and 30 minutes after application of the assigned position (approximately 45 minutes after spinal anesthesia). Head and neck position was maintained neutral throughout the measurement period. Hemodynamic parameters, including mean arterial pressure, heart rate, and peripheral oxygen saturation, were recorded simultaneously. The primary outcome was the between-group comparison of the change in IOP from baseline to 30 minutes after application of the assigned upper extremity position. Secondary outcomes included IOP change at 15 minutes and perioperative hemodynamic changes.

Studietype

Ingrijpend

Inschrijving (Werkelijk)

60

Fase

  • Niet toepasbaar

Contacten en locaties

In dit gedeelte vindt u de contactgegevens van degenen die het onderzoek uitvoeren en informatie over waar dit onderzoek wordt uitgevoerd.

Studie Locaties

  • Turkije (Türkiye)
    • Outside of the US
      • Elâzığ, Outside of the US, Turkije (Türkiye), 23200
        • Elazığ Fethi Sekin City Hospital

Deelname Criteria

Onderzoekers zoeken naar mensen die aan een bepaalde beschrijving voldoen, de zogenaamde geschiktheidscriteria. Enkele voorbeelden van deze criteria zijn iemands algemene gezondheidstoestand of eerdere behandelingen.

Geschiktheidscriteria

Leeftijden die in aanmerking komen voor studie

18 jaar tot 80 jaar (Volwassen, Oudere volwassene)

Accepteert gezonde vrijwilligers

Nee

Geslachten die in aanmerking komen voor studie

Allemaal

Beschrijving

Inclusion Criteria:

  • Age between 18 and 80 years
  • ASA physical status I-III
  • Scheduled for elective open inguinal hernia repair under spinal anesthesia
  • Ability to undergo intraocular pressure measurement
  • Provision of written informed consent

Exclusion Criteria:

  • History of glaucoma or ocular hypertension
  • Previous ocular surgery or ocular trauma
  • Active ocular disease or infection
  • Contraindication to spinal anesthesia
  • Inability to cooperate with intraocular pressure measurements
  • Refusal to participate

Studie plan

Dit gedeelte bevat details van het studieplan, inclusief hoe de studie is opgezet en wat de studie meet.

Hoe is de studie opgezet?

Ontwerpdetails

  • Primair doel: Fundamentele wetenschap
  • Toewijzing: Gerandomiseerd
  • Interventioneel model: Parallelle opdracht
  • Masker: Geen (open label)

Wapens en interventies

Deelnemersgroep / Arm
Interventie / Behandeling
Experimenteel: Arms-at-Sides Position

Participants underwent spinal anesthesia. After the T15 intraocular pressure measurement, both arms were positioned alongside the body, parallel to the torso, with the palms facing upward, and this position was maintained for approximately 30 minutes until the final T45 measurement.
Ander: Upper Extremity Positioning

Participants were assigned to one of two upper extremity positions after the T15 intraocular pressure measurement: arms positioned alongside the body or hands positioned over the chest. The assigned position was maintained for approximately 30 minutes until the final T45 intraocular pressure measurement.
Experimenteel: Hands-on-Chest Position

Participants underwent spinal anesthesia. After the T15 intraocular pressure measurement, both upper extremities were adducted with the elbows flexed, and the open hands were placed one over the other on the anterior chest wall. This position was maintained for approximately 30 minutes until the final T45 measurement.
Ander: Upper Extremity Positioning

Participants were assigned to one of two upper extremity positions after the T15 intraocular pressure measurement: arms positioned alongside the body or hands positioned over the chest. The assigned position was maintained for approximately 30 minutes until the final T45 intraocular pressure measurement.

Wat meet het onderzoek?

Primaire uitkomstmaten

Uitkomstmaat
Maatregel Beschrijving
Tijdsspanne
Change in Intraocular Pressure From Baseline to 30 Minutes
Tijdsspanne: Baseline before spinal anesthesia and 30 minutes after application of the assigned upper extremity position (approximately 45 minutes after spinal anesthesia)

Intraocular pressure was measured in the right eye using an Icare ic200 rebound tonometer. The primary outcome was the change in intraocular pressure from baseline before spinal anesthesia to 30 minutes after application of the assigned upper extremity position between the two study groups.
Baseline before spinal anesthesia and 30 minutes after application of the assigned upper extremity position (approximately 45 minutes after spinal anesthesia)

Secundaire uitkomstmaten

Uitkomstmaat
Maatregel Beschrijving
Tijdsspanne
Change in Intraocular Pressure From Baseline to 15 Minutes
Tijdsspanne: Baseline before spinal anesthesia and 15 minutes after spinal anesthesia, immediately before application of the assigned upper extremity position

Intraocular pressure was measured in the right eye using an Icare ic200 rebound tonometer. This secondary outcome was the change in intraocular pressure from baseline to 15 minutes after spinal anesthesia, immediately before application of the assigned upper extremity position, between the two study groups.
Baseline before spinal anesthesia and 15 minutes after spinal anesthesia, immediately before application of the assigned upper extremity position
Mean Arterial Pressure
Tijdsspanne: Baseline before spinal anesthesia, 15 minutes after spinal anesthesia immediately before positioning, and 30 minutes after application of the assigned upper extremity position (approximately 45 minutes after spinal anesthesia)

Mean arterial pressure was recorded simultaneously with the intraocular pressure measurements and evaluated between the two study groups.
Baseline before spinal anesthesia, 15 minutes after spinal anesthesia immediately before positioning, and 30 minutes after application of the assigned upper extremity position (approximately 45 minutes after spinal anesthesia)

Medewerkers en onderzoekers

Hier vindt u mensen en organisaties die betrokken zijn bij dit onderzoek.

Sponsor

Elazıg Fethi Sekin Sehir Hastanesi

Studie record data

Deze datums volgen de voortgang van het onderzoeksdossier en de samenvatting van de ingediende resultaten bij ClinicalTrials.gov. Studieverslagen en gerapporteerde resultaten worden beoordeeld door de National Library of Medicine (NLM) om er zeker van te zijn dat ze voldoen aan specifieke kwaliteitscontrolenormen voordat ze op de openbare website worden geplaatst.

Bestudeer belangrijke data

Studie start (Werkelijk)

20 november 2025

Primaire voltooiing (Werkelijk)

10 februari 2026

Studie voltooiing (Werkelijk)

10 februari 2026

Studieregistratiedata

Eerst ingediend

12 februari 2026

Eerst ingediend dat voldeed aan de QC-criteria

14 februari 2026

Eerst geplaatst (Werkelijk)

20 februari 2026

Updates van studierecords

Laatste update geplaatst (Werkelijk)

30 september 2026

Laatste update ingediend die voldeed aan QC-criteria

25 september 2026

Laatst geverifieerd

1 september 2026

Meer informatie

Termen gerelateerd aan deze studie

Trefwoorden

Andere studie-ID-nummers

  • EFSH-ANES-IOP-RCT-2026

Plan Individuele Deelnemersgegevens (IPD)

Bent u van plan om gegevens van individuele deelnemers (IPD) te delen?

NEE

Informatie over medicijnen en apparaten, studiedocumenten

Bestudeert een door de Amerikaanse FDA gereguleerd geneesmiddel

Nee

Bestudeert een door de Amerikaanse FDA gereguleerd apparaatproduct

Nee

Deze informatie is zonder wijzigingen rechtstreeks van de website clinicaltrials.gov gehaald. Als u verzoeken heeft om uw onderzoeksgegevens te wijzigen, te verwijderen of bij te werken, neem dan contact op met register@clinicaltrials.gov. Zodra er een wijziging wordt doorgevoerd op clinicaltrials.gov, wordt deze ook automatisch bijgewerkt op onze website .

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