Hemoglobin Monitoring in Scoliosis Surgery

March 31, 2026 updated by: Erhan Ozyurt

Hemoglobin Monitoring in Scoliosis Surgery: Comparison of Non-invasive and Invasive Methods

The study is planned to include patients who will undergo elective scoliosis surgery under general anesthesia at the Health Sciences University Antalya Education and Research Hospital. Demographic data including age, gender, height, weight, and ASA score of the patients will be recorded before general anesthesia. ECG, oxygen saturation, and non-invasive blood pressure will be monitored while the patients are lying supine before general anesthesia. An esophageal temperature probe will be placed before being placed in the prone position. All patients will receive standard anesthesia management. After being placed in the prone position, patients will be warmed with heaters containing an air-blowing system during the operation to prevent hypothermia. Anesthesia will be maintained with total intravenous anesthesia as a controlled infusion. Rainbow sensors will be placed on the 4th fingertips of the non-dominant hand of the patients and connected to the Radical-7 Pulse CO-Oximeter device and the initial Hb value will be recorded routinely and recorded hourly during the operation. Hemogram samples will be studied in the laboratory. During the operation, every hour and at the end of the operation, SpHb value, Hb, Hct levels in hemogram will be recorded. At the end of the operation, the amount of intraoperative blood transfusion, the amount of crystalloid and colloid given, the duration of the operation, the duration of anesthesia, urine output, and the need for vasopressors will be routinely recorded. A database will be created in a computer environment from this information.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Study Type

Observational

Enrollment (Actual)

53

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Turkey (Türkiye)
      • Antalya, Turkey (Türkiye), 07000
        • University of Health Sciences Antalya Training and Research Hospital

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Child
  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Sampling Method

Probability Sample

Study Population

Patients who apply to our hospital's orthopedic clinics to undergo elective scoliosis surgery.

Description

Inclusion Criteria:

  • Preoperative hemoglobin ≥ 9 g/dL
  • ASA I - III

Exclusion Criteria:

  • Patients with hematological disease,
  • Uncorrected preoperative anemia (preoperative hemoglobin < 9 g/dL)

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

Cohorts and Interventions

Group / Cohort
Intervention / Treatment
Scoliosis patients
Include patients who will undergo elective scoliosis surgery under general anesthesia.
Device: Radical-7 Pulse CO-Oximeter
Rainbow sensors will be placed on the 4th fingertips of the non-dominant hand of the patients and connected to the Radical-7 Pulse CO-Oximeter device and the initial Hb value will be recorded routinely and recorded hourly during the operation. Hemogram samples will be studied in the laboratory. During the operation, every hour and at the end of the operation, SpHb value, Hb, Hct levels in hemogram will be recorded.
Other Names:
  • Hemogram samples

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Total Hemoglobin (SpHb)
Time Frame: Before the anesthesia induction
Total Hemoglobin will be recorded from the monitor
Before the anesthesia induction
Total Hemoglobin (SpHb)
Time Frame: 1 hour after the anesthesia induction
Total Hemoglobin will be recorded from the monitor
1 hour after the anesthesia induction
Total Hemoglobin (SpHb)
Time Frame: 2 hours after the anesthesia induction
Total Hemoglobin will be recorded from the monitor
2 hours after the anesthesia induction
Total Hemoglobin (SpHb)
Time Frame: 3 hours after the anesthesia induction
Total Hemoglobin will be recorded from the monitor
3 hours after the anesthesia induction
Total Hemoglobin (SpHb)
Time Frame: Through operation completion, an average of 4 hours
Total Hemoglobin will be recorded from the monitor
Through operation completion, an average of 4 hours

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Erhan Ozyurt

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

July 1, 2025

Primary Completion (Actual)

March 15, 2026

Study Completion (Actual)

March 31, 2026

Study Registration Dates

First Submitted

June 27, 2025

First Submitted That Met QC Criteria

June 27, 2025

First Posted (Actual)

July 8, 2025

Study Record Updates

Last Update Posted (Actual)

April 1, 2026

Last Update Submitted That Met QC Criteria

March 31, 2026

Last Verified

March 1, 2026

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • CEMAL01

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

UNDECIDED

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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