NCT04281589

End-tidal Carbon Dioxide Monitoring in Low Tidal Volume Ventilation

Does End-Tidal Carbon Dioxide Value Show The Adequacy Of Ventilation In Low Tidal Volume Ventilation

• Status: Completed
• Phase: N/A
• Study type: Interventional
• Enrollment: 50 (actual)
• Sponsor: Bakirkoy Dr. Sadi Konuk Research and Training Hospital · Other Government
• Sex: All
• Age: 18 Years – 65 Years
• Healthy volunteers: Accepted

Summary

In cases where there is no ventilation-perfusion problem, the end-tidal carbon dioxide (ETCO2) value is closely associated with partial arterial carbon dioxide pressure (PaCO2); therefore, the PaCO2 value can be estimated using ETCO2 measurements in patients without significant cardiopulmonary disorders. The aim of the investigator's study is to evaluate the reliability of pulmonary ventilation monitoring with ETCO2 value and to investigate at what tidal volume values ETCO2 monitoring provides reliable information.

Detailed description

The patients were grouped as follows: Group 1, if the tidal volume is 4 ml/kg; Group 2, if TV=6 ml/kg; Group 3, if TV=8 ml/kg; and Group 4, if TV=10 ml/kg. It was determined how many breaths per minute (minute ventilation) would be given with tidal volume x respiratory rate=6 L. The patients were ventilated with the same ventilation parameters for 30 minutes and then arterial blood gas analysis was performed. Arterial blood gas was collected at t1 for group 1, t2 for group 2, t3 for group 3, and t4 for group 4. The ETCO2 value, Peak pressure (Ppeak), Plateau pressure (Pplato), mean airway pressure (Pmean) values were recorded at the time of arterial blood gas collection. Systolic blood pressure (SBP), diastolic blood pressure (DBP), mean arterial pressure (MAP), peak heart rate (PHR) values were evaluated. The patients with a mean arterial pressure of less than 65 mmHg were excluded from the study. Partial arterial oxygen pressure (PaO2), partial arterial carbon dioxide pressure (PaCO2), oxygen saturation (SO2) values were recorded from the arterial blood gas analysis. P (a-ET) CO2 gradient value was calculated. The groups were compared, in each patient, under the same conditions, when the different tidal volume was applied, how the ETCO2 monitorization, PaO2 values and hence the P (a-ET) CO2 gradient changed.

Conditions

• Ventilation
• End-Tidal Carbon Dioxide

Interventions

Type	Name	Description
OTHER	if the ventilation parameter caused desaturation or hypercapnia we will change the parameter	we will increased fi02

Timeline

• Start date: 2019-05-07
• Primary completion: 2020-01-23
• Completion: 2020-01-23
• First posted: 2020-02-24
• Last updated: 2020-02-24

Locations

1 site across 1 country: Turkey (Türkiye)