Background: The Oxygen Reserve Index (ORI) is a non-invasive parameter utilizing multi-wavelength pulse co-oximetry. ORI can provide early warnings of deteriorating oxygenation before changes are reflected in SpO₂ levels. This study aimed to investigate the feasibility of non-ventilated intubation in patients undergoing cholecystectomy as a means to achieve safe intubation without nasogastric tube placement, with reduced trauma and cost, and improved time efficiency.
Obesity is a complex and chronic disease that significantly impacts respiratory physiology. It leads to increased work of breathing and reduced compliance of the chest wall. In morbidly obese individuals, there is a marked reduction in total lung capacity, vital capacity, forced expiratory volume in one second (FEV1), and forced vital capacity (FVC). Additionally, due to their elevated metabolic demands, these patients exhibit higher oxygen consumption rates. The Oxygen Reserve Index (ORi) (Masimo Corp., Irvine, CA, USA) is an advanced, continuous, and non-invasive parameter that provides a relative indication of arterial partial pressure of oxygen (PaO₂). ORI monitoring can be particularly beneficial in patients at risk for inadequate preoxygenation, those with difficult mask ventilation, hypoxemic patients with aspiration risk, rapid sequence induction scenarios, obese individuals, ICU intubations, and invasive ventilation cases. It has also been shown to provide early warnings of desaturation in select patient groups, contributing to improved patient safety.
Study Type
OBSERVATIONAL
Enrollment
60
Noted for each patient.
Ankara Bilkent City Hospital
Ankara, çankaya, Turkey (Türkiye)
TIME FOR ORI TO FALL BELOW 0.24
TIME THE PATIENT STARTED TO WEAR A MASKS.
Time frame: WITHIN 10 MINUTES BEFORE INTUBATION
INITIAL ORI VALUE
Noted for each patient.
Time frame: WITHIN 10 MINUTES BEFORE INTUBATION
ORI VALUE AT 2 MINUTES
Noted for each patient.
Time frame: WITHIN 10 MINUTES BEFORE INTUBATION
AGE
Noted for each patient.
Time frame: WITHIN 10 MINUTES BEFORE INTUBATION
American Society of Anesthesiologists (ASA) Score
Noted for each patient.
Time frame: WITHIN 10 MINUTES BEFORE INTUBATION
SEX
Noted for each patient.
Time frame: WITHIN 10 MINUTES BEFORE INTUBATION
BMI
Noted for each patient.
Time frame: WITHIN 10 MINUTES BEFORE INTUBATION
PRESENCE OF A NASOGASTRIC TUBE
Noted for each patient.
Time frame: 10 MINUTES BEFORE EXTUBATION
Surgeon satisfaction
Noted for each patient. Surgeon satisfaction according to ng usage status.
Time frame: 10 MINUTES BEFORE EXTUBATION
PRESENCE OF LARYNGOSPASM
Noted for each patient.
Time frame: 10 MINUTES BEFORE EXTUBATION
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