Comparison of transcutaneous with arterial and end tidal carbon dioxide during thoracic surgery - A prospective observational study

Noninvasive carbon dioxide monitoring in pediatric patients undergoing laparoscopic surgery: transcutaneous vs. end-tidal techniques

“…According to Bland–Altman analysis, a lesser mean difference was detected between PetCO 2 and PaCO 2 than between PetCO 2 and PaCO 2 . Therefore, PtcCO 2 performed better than PetCO 2 in estimating PaCO 2 , which is in agreement with the previous results [ 6 , 7 , 9 ]. In our experiment, we can combine PetCO 2 , PaCO 2 , and PtcCO 2 to regulate the patient's acid–base, so there is no accumulation of CO 2 during the whole operation.…”

“…Pearson’s correlation coefficient and linear regression analysis were conducted to establish the correlation, and the Bland–Altman method was utilized to assess the agreement between PetCO 2 and PaCO 2 or between PtcCO 2 and PaCO 2 . A difference of ≤ 5 mmHg between PaCO 2 and the other two noninvasive variables was clinically acceptable [ 7 , 9 ] and compared using the chi-square (χ 2 ) test. P < 0.05 indicated a statistically significant difference.…”

“…PtcCO 2 monitoring is a continuous and noninvasive method; however, due to advancements in monitoring technology and the miniaturization of the device, it is gaining increasingly popularity in clinical practice. Also, previous studies have shown that PtcCO 2 monitoring is effective in perioperative settings [ 6 , 7 ], which suggests that compared to PetCO 2 , PtcCO 2 has a better correlation and a smaller difference with PaCO 2 . Nevertheless, Bolliger et al indicated that PtcCO 2 monitoring does not accurately reflect PaCO 2 and does not provide more useful monitoring data than PetCO 2 [ 8 ].…”