NCT05050552

Brief Summary

The investigators' goal is to perform an observational cohort study investigating the use of oxygen reserve index (ORi) in patients undergoing elective thoracic surgery and one-lung ventilation (OLV). For this purpose, ORi values are recorded and compared to the other collected hemodynamical and oximeter parameters. The primary hemodynamic parameters include heart rate (HR) and blood pressure (BP), while; oximeter device-related parameters include peripheral oxygen saturation, perfusion index (PI), and pleth variability index (PVI). The investigators' secondary goal is to investigate relationships between these hemodynamical and oximeter parameters using statistical analysis methods.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
50

participants targeted

Target at P25-P50 for all trials

Timeline
Completed

Started Mar 2020

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Start

First participant enrolled

March 1, 2020

Completed
1.4 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

July 15, 2021

Completed
1 month until next milestone

Study Completion

Last participant's last visit for all outcomes

August 15, 2021

Completed
22 days until next milestone

First Submitted

Initial submission to the registry

September 6, 2021

Completed
14 days until next milestone

First Posted

Study publicly available on registry

September 20, 2021

Completed
Last Updated

September 20, 2021

Status Verified

September 1, 2021

Enrollment Period

1.4 years

First QC Date

September 6, 2021

Last Update Submit

September 16, 2021

Conditions

Keywords

ventilationhypoxemiaone-lung ventilationoxygenperfusion

Outcome Measures

Primary Outcomes (13)

  • Main Outcome Measure-(1)

    Baseline time point measurement of oxygen reserve index (ORi) equals to zero for predicting hypoxemia during one-lung ventilation

    Baseline time point after patient's arrival into operating room before anesthesia induction during elective thoracic operation

  • Main Outcome Measure-(2)

    Preoxygenatiom time point measurement of oxygen reserve index (ORi) equals to zero for predicting hypoxemia during one-lung ventilation

    Preoxygenation time point before anesthesia induction during elective thoracic operation

  • Main Outcome Measure-(3)

    Third time point measurement of oxygen reserve index (ORi) equals to zero for predicting hypoxemia during one-lung ventilation

    Third time point during thoracic operation defined as; five minutes after tracheal intubation during two-lung ventilation in the supine position during elective thoracic operation

  • Main Outcome Measure-(4)

    Fourth time point measurement of oxygen reserve index (ORi) equals to zero for predicting hypoxemia during one-lung ventilation

    Fourth time point during thoracic operation defined as; 5 minutes after placing the patient in a lateral position with two-lung ventilation during elective thoracic operation

  • Main Outcome Measure-(5)

    Fifth time point measurement of oxygen reserve index (ORi) equals to zero for predicting hypoxemia during one-lung ventilation

    Fifth time point during thoracic operation defined as; at 1 minute after OLV placement during elective thoracic operation

  • Main Outcome Measure-(6)

    Sixth time point measurement of oxygen reserve index (ORi) equals to zero for predicting hypoxemia during one-lung ventilation

    Sixth time point during thoracic operation defined as; at 2 minute after OLV placement during elective thoracic operation.

  • Main Outcome Measure-(7)

    Seventh time point measurement of oxygen reserve index (ORi) equals to zero for predicting hypoxemia during one-lung ventilation

    Seventh time point during thoracic operation defined as; at 5 minute after OLV placement during elective thoracic operation.

  • Main Outcome Measure-(8)

    Eighth time point measurement of oxygen reserve index (ORi) equals to zero for predicting hypoxemia during one-lung ventilation

    Eighth time point during thoracic operation defined as; at 10 minute after OLV placement during elective thoracic operation.

  • Main Outcome Measure-(9)

    Ninth time point measurement of oxygen reserve index (ORi) equals to zero for predicting hypoxemia during one-lung ventilation

    Ninth time point during thoracic operation defined as; at 15 minute after OLV placement during elective thoracic operation.

  • Main Outcome Measure-(10)

    Tenth time point measurement of oxygen reserve index (ORi) equals to zero for predicting hypoxemia during one-lung ventilation

    Tenth time point during thoracic operation defined as; at 30 minute after OLV placement during elective thoracic operation.

  • Main Outcome Measure-(11)

    Eleventh time point measurement of oxygen reserve index (ORi) equals to zero for predicting hypoxemia during one-lung ventilation

    Eleventh time point during thoracic operation defined as; at 45 minute after OLV placement during elective thoracic operation.

  • Main Outcome Measure-(12)

    Twelfth time point measurement of oxygen reserve index (ORi) equals to zero for predicting hypoxemia during one-lung ventilation

    Twelfth time point during thoracic operation defined as; at 60 minute after OLV placement during elective thoracic operation.

  • Main Outcome Measure-(13)

    Thirteenth time point measurement of oxygen reserve index (ORi) equals to zero for predicting hypoxemia during one-lung ventilation

    Thirteenth time point during thoracic operation defined as; at 90 minute after OLV placement during elective thoracic operation.

Secondary Outcomes (7)

  • Secondary Outcome-(1)

    During anesthesia induction and maintenance of elective thoracic operation

  • Secondary Outcome-(2)

    Twenty-four hours prior to elective thoracic surgery operation

  • Secondary Outcome-(3)

    During elective thoracic surgery every five minutes continuously

  • Secondary Outcome-(4)

    During elective thoracic surgery every five minutes continuously

  • Secondary Outcome-(5)

    During elective thoracic surgery every five minutes continuously

  • +2 more secondary outcomes

Interventions

The Masimo Radical-7 Pulse CO-Oximeter is a device for the measurement of pulse oximetry, oxygen reserve index (ORi), perfusion index (PI), and pleth variability index (PVI). The device is the product of a company called Masimo Inc, Irvine, CA, USA

Eligibility Criteria

Age22 Years - 80 Years
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)
Sampling MethodProbability Sample
Study Population

From a total of fifty-nine patients, 50 patients underwent either video-assisted thoracic surgery or open thoracotomy after a diagnosis of a suspicious lung tumor.

You may qualify if:

  • All patients at ages between 22 to 80 years old,
  • American Society of Anesthesiologists Physical Status (ASA-PS) risk groups of 1 to 3
  • Elective thoracic surgery
  • Operational types of thoracic surgery include; either open lung resection with thoracotomy or video-assisted thoracic surgery (VATS) operative procedure along with general a anesthesia, DLT insertion, and OLV for all patients

You may not qualify if:

  • Refusal to participate in a study,
  • History of severe asthma,
  • Severe renal and hepatic insufficiencies,
  • Pregnancy,
  • History of previous pulmonary resection,
  • Hemoglobinopathies.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Trakya University Training and Research Hospital

Edirne, 22030, Turkey (Türkiye)

Location

Related Publications (7)

  • Karzai W, Schwarzkopf K. Hypoxemia during one-lung ventilation: prediction, prevention, and treatment. Anesthesiology. 2009 Jun;110(6):1402-11. doi: 10.1097/ALN.0b013e31819fb15d.

    PMID: 19417615BACKGROUND
  • Applegate RL 2nd, Dorotta IL, Wells B, Juma D, Applegate PM. The Relationship Between Oxygen Reserve Index and Arterial Partial Pressure of Oxygen During Surgery. Anesth Analg. 2016 Sep;123(3):626-33. doi: 10.1213/ANE.0000000000001262.

    PMID: 27007078BACKGROUND
  • Alday E, Nieves JM, Planas A. Oxygen Reserve Index Predicts Hypoxemia During One-Lung Ventilation: An Observational Diagnostic Study. J Cardiothorac Vasc Anesth. 2020 Feb;34(2):417-422. doi: 10.1053/j.jvca.2019.06.035. Epub 2019 Jun 28.

  • Chen ST, Min S. Oxygen reserve index, a new method of monitoring oxygenation status: what do we need to know? Chin Med J (Engl). 2020 Jan 20;133(2):229-234. doi: 10.1097/CM9.0000000000000625.

  • Campos JH, Sharma A. Predictors of Hypoxemia During One-Lung Ventilation in Thoracic Surgery: Is Oxygen Reserve Index (ORi) the Answer? J Cardiothorac Vasc Anesth. 2020 Feb;34(2):423-425. doi: 10.1053/j.jvca.2019.08.017. Epub 2019 Aug 18. No abstract available.

  • Koishi W, Kumagai M, Ogawa S, Hongo S, Suzuki K. Monitoring the Oxygen Reserve Index can contribute to the early detection of deterioration in blood oxygenation during one-lung ventilation. Minerva Anestesiol. 2018 Sep;84(9):1063-1069. doi: 10.23736/S0375-9393.18.12622-8. Epub 2018 May 14.

  • Sagiroglu G, Baysal A, Karamustafaoglu YA. The use of oxygen reserve index in one-lung ventilation and its impact on peripheral oxygen saturation, perfusion index and, pleth variability index. BMC Anesthesiol. 2021 Dec 20;21(1):319. doi: 10.1186/s12871-021-01539-8.

MeSH Terms

Conditions

Respiratory AspirationHypoxia

Condition Hierarchy (Ancestors)

Respiration DisordersRespiratory Tract DiseasesPathologic ProcessesPathological Conditions, Signs and SymptomsSigns and Symptoms, RespiratorySigns and Symptoms

Study Officials

  • Hasan Umit, MD

    Trakya University, Trakya University Training and Research Hospital, Edirne, Turkey, 22030

    STUDY CHAIR

Study Design

Study Type
observational
Observational Model
COHORT
Time Perspective
PROSPECTIVE
Target Duration
1 Day
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Associate Professor of Anesthesiology and Reanimation

Study Record Dates

First Submitted

September 6, 2021

First Posted

September 20, 2021

Study Start

March 1, 2020

Primary Completion

July 15, 2021

Study Completion

August 15, 2021

Last Updated

September 20, 2021

Record last verified: 2021-09

Data Sharing

IPD Sharing
Will share

Our data and statistical analysis of each investigated all parameter and data are available after the publication of the clinical study.

Shared Documents
STUDY PROTOCOL, SAP, CSR
Time Frame
The data will be available after the publication of our data upon request from the researchers.
Access Criteria
There is no internet website to obtain data but the researchers can contact Dr. Gonul Sagiroglu or Dr. Ayse Baysal.

Locations