Clinical trial NCT05807815: The Effectiveness of the Use of Oxygen Reserve Index in Preventing Hyperoxia in the Intensive Care Unit.
Official title: Determination of the Incidence of Hyperoxia and the Effectiveness of FiO2 Titration Guided by the Oxygen Reserve Index in Preventing Hyperoxia in Mechanically Ventilated Patients in the Intensive Care Unit.
Study type: INTERVENTIONAL
Overall status: COMPLETED
Phase: NA
Conditions: Hyperoxia
Complication
Mechanical Ventilation Complication
Keywords: Hyperoxia
Fraction of inspired oxygen
Intensive care unit
Lead sponsor: Tepecik Training and Research Hospital
Sponsor class: OTHER
First posted: 2023-04-11
Enrollment: 60
Sex: ALL
Minimum age (years): 18
Maximum age (years): 85
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: no
Allocation: RANDOMIZED
Intervention model: PARALLEL
Primary purpose: PREVENTION

Brief summary: Oxygen therapy is the most common treatment modality for patients with hypoxemia in intensive care units, but target values for normoxemia are not clearly defined. Therefore, iatrogenic hyperoxemia is a very common situation. In intensive care units, FiO2 is usually adjusted according to hypoxia and hyperoxia is ignored in patients under mechanical ventilator support. Even though there are many side effects reported related to hyperoxemia and hyperoxemia is shown to be related to worse outcome than expected; clinicians still observe hyperoxemia frequently.

Continuous ORi monitoring can be used for detecting and preventing hyperoxia. The ability to perform FiO2 titration with ORi may be an appropriate monitoring management to prevent the harmful effects of hyperoxia. In this study, it was aimed to investigate the effectiveness of ORi-guided FiO2 titration in preventing hyperoxia in patients undergoing mechanical ventilation in the intensive care unit and to determine the incidence of hyperoxia.

Detailed description: In intensive care units, FiO2 is usually adjusted according to hypoxia and hyperoxia is ignored in patients under mechanical ventilator support. Even though there are many side effects reported related to hyperoxemia and hyperoxemia is shown to be related to worse outcome than expected; clinicians still observe hyperoxemia frequently.

Oxygen reserve index (ORi™) (Masimo Corp., Irvine, USA) can guide clinicians in detection of hyperoxia. ORi is a parameter which can evaluate partial pressure of oxygen (PaO2) rating from 0 to 1. There are growing evidences in ORi that it might be helpful to reduce hyperoxia in general anesthesia. Continuous ORi monitoring can be used for detecting and preventing hyperoxia. The ability to perform FiO2 titration with ORi may be an appropriate monitoring management to prevent the harmful effects of hyperoxia.

In this study, it was aimed to investigate the effectiveness of ORi-guided FiO2 titration in preventing hyperoxia in patients undergoing mechanical ventilation in the intensive care unit and to determine the incidence of hyperoxia.

Eligibility criteria: Inclusion Criteria:

* Patients older than 18 years,
* Patients whose oxygen saturation \>97%
* Patients that have invasive arterial monitorization

Exclusion Criteria:

* Patients younger than 18
* Patients that need to be treated with high doses of vasopressors,
* Patients having peripheric hypoperfusion,
* Hemodynamically unstable patients,
* Patients with hemoglobinopathy,
* Pregnancy,
* Morbid obesity (bmi\>40 kg/m2),
* Patients with arrythmia that can result in hemodynamic instability, patients with acute coronary syndrome
* Acute respiratory failure or ARDS.

Primary outcomes:
measure: Correlation of FiO2 and ORi value
timeFrame: Up to 24 weeks
Secondary outcomes:
measure: Fraction of inspired oxygen (FiO2)
timeFrame: Up to 48 hours
measure: Mean arterial blood pressure (MAP)
timeFrame: Up to 48 hours
measure: Heart rate (HR)
timeFrame: Up to 48 hours
measure: Positive end-expiratory pressure (PEEP)
timeFrame: Up to 48 hours
Other outcomes:
Locations:
city: Izmir
country: Turkey
facility: Tepecik Research and Training Hospital
state: Konak
Study officials:
References:
citation: de Graaff AE, Dongelmans DA, Binnekade JM, de Jonge E. Clinicians' response to hyperoxia in ventilated patients in a Dutch ICU depends on the level of FiO2. Intensive Care Med. 2011 Jan;37(1):46-51. doi: 10.1007/s00134-010-2025-z. Epub 2010 Sep 28.
citation: Rincon F, Kang J, Maltenfort M, Vibbert M, Urtecho J, Athar MK, Jallo J, Pineda CC, Tzeng D, McBride W, Bell R. Association between hyperoxia and mortality after stroke: a multicenter cohort study. Crit Care Med. 2014 Feb;42(2):387-96. doi: 10.1097/CCM.0b013e3182a27732.
citation: Mach WJ, Thimmesch AR, Pierce JT, Pierce JD. Consequences of hyperoxia and the toxicity of oxygen in the lung. Nurs Res Pract. 2011;2011:260482. doi: 10.1155/2011/260482. Epub 2011 Jun 5.
citation: Scheeren TWL, Belda FJ, Perel A. Correction to: The oxygen reserve index (ORI): a new tool to monitor oxygen therapy. J Clin Monit Comput. 2018 Jun;32(3):579-580. doi: 10.1007/s10877-018-0104-9.
citation: Yoshida K, Isosu T, Noji Y, Ebana H, Honda J, Sanbe N, Obara S, Murakawa M. Adjustment of oxygen reserve index (ORi) to avoid excessive hyperoxia during general anesthesia. J Clin Monit Comput. 2020 Jun;34(3):509-514. doi: 10.1007/s10877-019-00341-9. Epub 2019 Jun 22.