Application Of Percutaneous Carbon Dioxide Partial Pressure Monitoring In The Treatment Of Rigid Bronchoscopy

Objective:The results of percutaneous carbon dioxide partial pressure monitoring were applied to rigid bronchoscopy assisted by jet ventilation to explore a more suitable ventilation mode for rigid bronchoscopy.Methords:Thirty patients who were treated with rigid bronchoscopy were randomly divided into high frequency jet group(group G)and normal frequency jet group(group C)with 15 patients in each group.The frequency of jet ventilation in group G after anesthesia induction was 150 times / min,18 times/ min in group C,The I / E of the two groups of jet ventilation was the same as that of the two groups.The patients in the two groups were recorded when they entered the room.The jet ventilation began recorded at this time to be T1,jet ventilation lasted 10 minutes to be T2,the jet ventilation lasted for 20 minutes to be T3,and the jet ventilation lasted for 30 minutes to be T4,the jet ventilation lasted for 40 minutes to be T5,the jet ventilation lasted for 50 minutes to be T6,the jet ventilation lasted for 60 minutes to be T7.Recording the values of PaCO2,PtcCO2 and MAP HR at different time points.Recording the time of spontaneous respiratory when the operation is over in the two groups.Results:1.There was significant correlation between PtcCO2 and PaCO2 values in the two groups.The correlation coefficient of group G was 0.947(P < 0.05).The linear regression equation is Y = 1.068X-1.102(r2 = 0.897,P <0.01).The correlation coefficient of group C was 0.927,and the linear regression equation was 0.782 X 10.612r2 n 0.859g(P < 0.01).2.There was no significant difference in MAP and HR between the two groups(P>0.05),but there was a significant difference in MAP and HR at T3?T4?T5 ?T6 ?T7 between the two groups(P<0.05),and the MAP HR at T3?T4?T5?T6?T7 in G group were significantly higher than those in C group(P<0.05).3.There was significant difference between the two groups in the time required for the recovery of spontaneous respiration after operation.The time required in group C was longer than that in group G(P<0.05).Conclusion:1.Percutaneous partial pressure monitoring of carbon dioxide can be safely used in rigid bronchoscopy assisted by jet ventilation and can reflect the ventilation status of alveoli in a certain range in real time.2.Both jet ventilation methods can meet the oxygen supply of patients with rigid bronchoscopy,but both jet ventilation methods have some shortcomings.3.The results of high frequency jet ventilation group showed that carbon dioxide accumulation appeared with the prolongation of jet ventilation time,and hyperventilation appeared with the extension of jet ventilation time in normal frequency jet ventilation group.