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Øvre ekstremitetsposition og intraokulært tryk under spinalanæstesi (UEP-IOP)

25. september 2026 opdateret af: Elazıg Fethi Sekin Sehir Hastanesi

Effekten af overekstremitetsposition på intraokulært tryk under spinal anæstesi ved åben inguinal herniaoperation: En randomiseret kontrolleret undersøgelse

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.

Studieoversigt

Status

Afsluttet

Betingelser

Intervention / Behandling

Detaljeret beskrivelse

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.

Undersøgelsestype

Interventionel

Tilmelding (Faktiske)

60

Fase

  • Ikke anvendelig

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiesteder

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

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

18 år til 80 år (Voksen, Ældre voksen)

Tager imod sunde frivillige

Ingen

Køn, der er berettiget til at studere

Alle

Beskrivelse

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

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Primært formål: Grundvidenskab
  • Tildeling: Randomiseret
  • Interventionel model: Parallel tildeling
  • Maskning: Ingen (Åben etiket)

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Eksperimentel: 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.

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.

Eksperimentel: 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.

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.

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Change in Intraocular Pressure From Baseline to 30 Minutes
Tidsramme: 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)

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Change in Intraocular Pressure From Baseline to 15 Minutes
Tidsramme: 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
Tidsramme: 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)

Samarbejdspartnere og efterforskere

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Sponsor

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart (Faktiske)

20. november 2025

Primær færdiggørelse (Faktiske)

10. februar 2026

Studieafslutning (Faktiske)

10. februar 2026

Datoer for studieregistrering

Først indsendt

12. februar 2026

Først indsendt, der opfyldte QC-kriterier

14. februar 2026

Først opslået (Faktiske)

20. februar 2026

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

30. september 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

25. september 2026

Sidst verificeret

1. september 2026

Mere information

Begreber relateret til denne undersøgelse

Andre undersøgelses-id-numre

  • EFSH-ANES-IOP-RCT-2026

Plan for individuelle deltagerdata (IPD)

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