The purpose of this research study is to compare difference between breathing by oneself or with the partial help from an anesthesia machine in children under general anesthesia.
The laryngeal mask airway (LMA) is a breathing device that sits above the vocal cords and allows the patient to breathe in and out adequately under general anesthesia (GA). The ProSeal™ LMA (PLMA™) is a specialized type of LMA with a design that permits the delivery of higher pressures to help the patient breathe in and out (ventilate) and also contains a channel to suction the stomach. Children under GA may breathe through a PLMA in different ways. Spontaneous ventilation consists of the children breathing on their own through a PLMA™. Pressure support ventilation allows the patient to breathe on their own with additional help from the anesthesia machine. Pressure control ventilation allows the patient to breathe with the help of an anesthesia machine. A child undergoing surgery requires a deep level of general anesthesia which negatively affects their ability to ventilate. Thus, children may not breathe in oxygen and carbon dioxide out adequately at this level of anesthesia and it may be beneficial to provide some level of support to enhance carbon dioxide exchange and to avoid hypoventilation. This study will attempt to determine whether pressure support ventilation improves ventilation in children undergoing outpatient surgery.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
OTHER
Masking
NONE
Enrollment
33
The patient will breathe spontaneously (on their own)while under general anesthesia throughout the duration of the surgery.
The patient will breathe on their own and with a little assistance from the anesthesia machine while under general anesthesia throughout the duration of the surgery.
The patient's ventilation will be completely supported by the anesthesia machine while under general anesthesia throughout the duration of the surgery.
Wake Forest University Health Sciences
Winston-Salem, North Carolina, United States
Differences in End-tidal Carbon Dioxide Compared Between the Spontaneous Ventilation and Pressure Support Ventilation Groups.
Differences in End-tidal Carbon Dioxide Compared Between the Spontaneous Ventilation and Pressure Support Ventilation Groups will be calculated by subtracting the mean of End-tidal Carbon Dioxide from the PSV group to the SV group
Time frame: up to 90 minutes
Differences Tidal Volume Compared Between the Spontaneous Ventilation and Pressure Support Ventilation Groups.
Tidal Volume Compared Between the Spontaneous Ventilation and Pressure Support Ventilation Groups. Measured in mL/Kg and will be calculated by subtracting the mean of tidal volume from the PSV group to the SV group
Time frame: up to 90 minutes
Mean Values of ETCO2 in SV and PCV Groups
Mean Values of ETCO2 in SV and PCV groups reported in mmHg
Time frame: up to 90 minutes
Mean Tidal Volume Values Compared Between SV and PCV Groups
Mean Tidal Volume Values compared between SV and PCV Groups. Measured in mL/kg
Time frame: up to 90 minutes
Mean Values of ETCO2 Between the PSV and PCV Groups
Mean Values of ETCO2 between the PSV and PCV Groups. Measured in mmHg
Time frame: up to 90 minutes
Mean Values of Tidal Volume Between the PSV and PCV Groups
Mean Values of Tidal Volume Between the PSV and PCV Groups. Measured in mL/kg
Time frame: up to 90 minutes
Differences in Respiratory Rates Between Spontaneous Ventilation and Pressure Support Ventilation Groups.
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Differences in respiratory rates between spontaneous ventilation and pressure support ventilation groups will be calculated by subtracting the mean of from the respiratory rates PSV group to the SV group.
Time frame: up to 90 minutes
Mean Values of Respiratory Rate Compared Between the Spontaneous Ventilation and Pressure Control Ventilation Groups.
Time frame: up to 90 minutes
Mean Values of Respiratory Rate Compared Between Pressure Support Ventilation and Pressure Control Ventilation Groups.
Time frame: up to 90 minutes