Perfusion IndexPerfusionNCT07400185
Evaluation Of The Effects Of Changes In Operating Table Position On Perfusion Index And Spinal Anesthesia
An observational study of Perfusion Index and Position Differences, run by Enes Celik at 1 site in Turkey (Türkiye).
Trial summary
The aim of this observational study is to investigate how table position affects the development of block in patients undergoing spinal anesthesia. Perfusion index measurements will be used to answer this question. Patients who will undergo perfusion index measurement during surgery will be included in the study. Read more about this study
- Who is it for?
- Ages 18 to 65 yearsHealthy volunteers can take part
- Conditions the study is for
- Perfusion Index, Position Differences
- How many people
- 102 participants
- Where
- 1 siteTurkey (Türkiye)
- Study dates
- 5 Feb 2026to 20 Apr 2026
- Phase
- Observational
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 to 65 years
- All sexes
- Healthy volunteers accepted
- Adult, Older adult
Study population: Patients who will undergo lower extremity surgery within the specified time frame, are in ASA 1-3 risk group, have no additional medical conditions, and will receive spinal anesthesia.
Who may be able to join
- Patients who will undergo lower extremity surgery within the specified time frame, are in ASA 1-3 risk group, have no additional medical conditions, and will receive spinal anesthesia.
Who cannot join
- Patients under 18 and over 65 years of age Patients who have received anesthesia other than spinal anesthesia Patients with peripheral artery disease Patients with nail polish, etc. on their nails
Trial locations and contacts
1 site in 1 country.
Turkey (Türkiye)1 site
Mardin Artuklu University Training and Research Hospital
Mardin, Artuklu, 47100
About this study
Official title: Evaluation Of The Effects Of Changes In Operating Table Position On Perfusion Index And Spinal Anesthesia: An Observational Study
The aim of this observational study is to investigate how table position affects the development of block in patients undergoing spinal anesthesia. Perfusion index measurements will be used to answer this question. Patients who will undergo perfusion index measurement during surgery will be included in the study. These patients will be compared with patients whose anesthesiologists chose not to position them on the operating table. The study is planned to continue for approximately 40 days, and the data collected during this period will be used for evaluation.
Read the detailed description
Patients aged 18-65 years in ASA1-3 risk group who will undergo lower extremity surgery with spinal anesthesia are planned to be included in the study.
- Conditions
- Perfusion Index, Position Differences
- Keywords
- The Effects of Changes in Operating Table Position on Perfusion Index and Spinal Anesthesia, operating table position
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
| Study group | Role | What they receive |
|---|---|---|
| neutral group | Patients will be included who are positioned so that the operating table is neutral. | |
| tilt group | Patients will be positioned on the operating table with an incline towards the side they will be operated on. |
What is being measured
The primary outcome is the main question the study is designed to answer.
perfusion index
The amount of increase over time will be recorded according to the basal perfusion index value.
Measured: 5 min
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted10 Feb 2026
- Study start5 Feb 2026
- Primary completion15 Apr 2026
- Study completion20 Apr 2026
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (1)Papers the sponsor has linked to this study.
- Other trials for Perfusion IndexStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Observational
- Observational model
- Case-control
- Time perspective
- Prospective
- Enrolment
- 102 participants (actual)
Sponsor and investigators
- Lead sponsor
- Enes Celik
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor-investigator, Enes Celik, Mardin Artuklu University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07400185
- Sponsor's protocol ID
- 26.12.2025-2-01
- Acronym
- Perfusion
- Status last verified
- Oct 2026
- First submitted
- 3 Feb 2026
- Last updated
- 28 Oct 2026
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- Undecided: In accordance with the personal data protection law, personal data may be shared for scientific purposes after being anonymized.
Publications
Tapar H, Karaman S, Dogru S, Karaman T, Sahin A, Tapar GG, Altiparmak F, Suren M. The effect of patient positions on perfusion index. BMC Anesthesiol. 2018 Aug 17;18(1):111. doi: 10.1186/s12871-018-0571-z.
PubMed 30115011
Study at a glance
From the registry record, last updated by the sponsor on 28 Oct 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Evaluation Of The Effects Of Changes In Operating Table Position On Perfusion Index And Spinal Anesthesia: An Observational Study
- ClinicalTrials.gov ID
- NCT07400185
- Acronym / sponsor ID
- Perfusion / 26.12.2025-2-01
- Conditions
- Perfusion Index, Position Differences
- Keywords
- The Effects of Changes in Operating Table Position on Perfusion Index and Spinal Anesthesia, operating table position
- Study type
- Observational
- Recruitment status
- Completed
- Enrolment
- 102 participants (actual)
- Lead sponsor
- Enes CelikUniversity, hospital or other
- Study start
- 5 Feb 2026 (actual)
- Primary completion
- 15 Apr 2026 (actual)
- Study completion
- 20 Apr 2026 (actual)
- First posted
- 10 Feb 2026 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The aim of this observational study is to investigate how table position affects the development of block in patients undergoing spinal anesthesia. Perfusion index measurements will be used to answer this question. Patients who will undergo perfusion index measurement during surgery will be included in the study. These patients will be compared with patients whose anesthesiologists chose not to position them on the operating table. The study is planned to continue for approximately 40 days, and the data collected during this period will be used for evaluation.
Detailed description
Patients aged 18-65 years in ASA1-3 risk group who will undergo lower extremity surgery with spinal anesthesia are planned to be included in the study.
Study design
- Observational model
- Case-control
- Time perspective
- Prospective
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| neutral group | – | –Patients will be included who are positioned so that the operating table is neutral. |
| tilt group | – | –Patients will be positioned on the operating table with an incline towards the side they will be operated on. |
Who may qualify
- Ages
- 18 to 65 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult, Older adult
- Study population
- Patients who will undergo lower extremity surgery within the specified time frame, are in ASA 1-3 risk group, have no additional medical conditions, and will receive spinal anesthesia.
Key inclusion criteria (1 listed)
- Patients who will undergo lower extremity surgery within the specified time frame, are in ASA 1-3 risk group, have no additional medical conditions, and will receive spinal anesthesia.
Key exclusion criteria (1 listed)
- Patients under 18 and over 65 years of age Patients who have received anesthesia other than spinal anesthesia Patients with peripheral artery disease Patients with nail polish, etc. on their nails
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Primary outcome
perfusion index
Time frame: 5 min
The amount of increase over time will be recorded according to the basal perfusion index value.
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 28 Oct 2026.
- Background: PubMed 30115011Tapar H, Karaman S, Dogru S, Karaman T, Sahin A, Tapar GG, Altiparmak F, Suren M. The effect of patient positions on perfusion index. BMC Anesthesiol. 2018 Aug 17;18(1):111. doi: 10.1186/s12871-018-0571-z.
- Individual participant dataSharing planned: Undecided. In accordance with the personal data protection law, personal data may be shared for scientific purposes after being anonymized.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
The record lists no contact. Use the official record to reach the sponsor.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of Perfusion Index and Position Differences, run by Enes Celik at 1 site in Turkey (Türkiye).
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 1 inclusion and 1 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 28 Oct 2026. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in Turkey (Türkiye). Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
perfusion index (time frame: 5 min). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT07400185, which also lists 1 linked publication.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 28 Oct 2026.