NCT04204746

The Affecting Factors on Airway Temperature and Moisture

The Effects of Different Fresh Gas Flows and Different Anesthetics on Airway Temperature and Moisture in Patients Who Underwent General Anesthesia

• Status: Completed
• Phase: —
• Study type: Observational
• Enrollment: 240 (actual)
• Sponsor: Selcuk University · Academic / Other
• Sex: All
• Age: 18 Years – 65 Years
• Healthy volunteers: Not accepted

Summary

There is no literature information about the flow rate of fresh gas mixture (air+O2) in the patients who underwent general anesthesia. Different flow rates of fresh gas mixture are used in both the investigator's hospital and the experiences of the anesthesiologists. It is aimed to study the effects of different fresh gas flow rates on the rate of temperature and moisture of the airway of patients who underwent general anesthesia.

Detailed description

Under physiological conditions, inhaled air is heated and humidified as it passes through the nose and upper airways until reaching the alveoli. This mechanism is bypassed by endotracheal intubation. Ventilation with dry and cold compressed gases leads to loss of water and heat from the respiratory tract. Drying of the respiratory tract can lead to destruction of the cilia and mucous membranes, resulting in decreased mucociliary transport and increased concentration of secretions.There is no definitive literature on fresh gas mix (oxygen + air) flow rates in patients under general anesthesia. This study aimed to investigate whether two fresh gas flow rates routinely employed in the authors' practice affected airway temperature and humidity.

Conditions

• General Anesthesia

Interventions

Type	Name	Description
OTHER	We will observe and evaluate the temperature and moisture in the respiratory circuit by a thermo-hygrometer.

Timeline

• Start date: 2016-04-01
• Primary completion: 2018-04-01
• Completion: 2018-04-01
• First posted: 2019-12-19
• Last updated: 2019-12-20