Düzce University, School of Medicine, Department of Emergency Medicine, Düzce, Turkey.
Düzce University, School of Medicine, Department of Emergency Medicine, Düzce, Turkey.
Med Intensiva (Engl Ed). 2024 Sep;48(9):511-519. doi: 10.1016/j.medine.2024.04.011. Epub 2024 May 1.
To assess the feasibility of using end-tidal carbon dioxide (EtCO) as a non-invasive substitute for partial pressure of arterial carbon dioxide (PaCO) in emergency department (ED) triage and follow-up, and to explore the potential of partial pressure of venous carbon dioxide (PvCO) as an alternative to PaCO.
Prospective cross-sectional study.
Tertiary university hospital.
97 patients presenting with acute respiratory distress to the ED.
EtCO, arterial blood gases, and venous blood gases measured at admission (0 min), 60 min, and 120 min.
CO levels.
Among 97 patients (mean age: 70.93 ± 9.6 years; 60.8% male), EtCO > 45 mmHg at admission showed strong positive correlations with PaCO and PvCO (r = 0.844, r = 0.803; p < 0.001, respectively). Significant positive correlation was observed between 60-min EtCO and PaCO (r = 0.729; p < 0.001). Strong correlation between PaCO and PvCO at 120 min when EtCO > 45 mmHg (r = 0.870; p < 0.001). EtCO was higher in hospitalized patients compared to discharged ones.
EtCO appears promising as a substitute for PaCO in ED patients with acute respiratory distress within the initial two hours of treatment. Venous blood gas sampling offers a less invasive alternative to arterial sampling, facilitating simultaneous blood tests.
评估在急诊分诊和随访中使用呼气末二氧化碳（EtCO）作为动脉二氧化碳分压（PaCO）无创替代物的可行性，并探讨静脉血二氧化碳分压（PvCO）作为 PaCO 替代物的潜力。
前瞻性横断面研究。
三级大学医院。
97 例因急性呼吸窘迫到急诊科就诊的患者。
在入院时（0 分钟）、60 分钟和 120 分钟测量 EtCO、动脉血气和静脉血气。
CO 水平。
在 97 例患者中（平均年龄：70.93±9.6 岁；60.8%为男性），入院时 EtCO>45mmHg 与 PaCO 和 PvCO 呈强正相关（r=0.844，r=0.803；分别为 p<0.001）。60 分钟时 EtCO 与 PaCO 呈显著正相关（r=0.729；p<0.001）。当 EtCO>45mmHg 时，120 分钟时 PaCO 与 PvCO 之间存在强相关性（r=0.870；p<0.001）。与出院患者相比，住院患者的 EtCO 更高。
在急性呼吸窘迫的急诊科患者中，EtCO 在治疗的最初两小时内似乎是 PaCO 的有前途的替代物。静脉血气采样提供了一种比动脉采样更具侵入性的替代方法，可同时进行血液检查。
