Relationship Analysis of Central Venous-to-arterial Carbon Dioxide Difference and Cardiac Index for Septic Shock

被引:10
|
作者
Guo, Zhiqiang [1 ]
Yin, Ming [2 ]
Kong, Jichang [3 ]
Wang, Bin [3 ]
Dai, Kunpeng [3 ]
Zuo, Tian [1 ]
Yu, Guangyan [3 ]
Bao, Yong [3 ]
机构
[1] Beidaihe Hosp Qinhuangdao, Dept Crit Care Med, Qinhuangdao, Hebei, Peoples R China
[2] Gen Hosp North China Petr Adm, Dept Intervent Endoscopy, Renqiu, Peoples R China
[3] Gen Hosp North China Petr Adm, Dept Crit Care Med, Renqiu, Peoples R China
关键词
SEPSIS; OUTPUT; RESUSCITATION; CONSENSUS;
D O I
10.1038/s41598-019-45252-6
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
To analyze the relationship of the central venous-to-arterial carbon dioxide difference (p(cv-a)CO2) and cardiac index (CI) in patients with septic shock, an observational study was conducted in intensive care unit (ICU). 66 consecutive patients with septic shock and central venous oxygen saturation (ScvO(2)) >= 70% were included after early fluid resuscitation. Measurements were taken at a 6 h interval (T0, T6, T12, T18, T24) during first 24 h after their admission into ICU, including heart rate (HR), mean arterial pressure (MAP), central venous pressure (CVP), p(cv-a)CO2, cardiac index(CI, L/(min.m(2))) and ScvO(2). Patients were divided into low p(cv-a)CO2 group (n = 35) and high p(cv-a)CO2 group (n = 31) according to a threshold of 6 mmHg for p(cv-a)CO2 at T0. As a result, at T0, T6, T12, T18 and T24, there were respectively significant differences between low and high p(cv-a)CO2 groups for CI (4.1 +/- 1.4 vs 2.4 +/- 0.6, 4.4 +/- 0.9 vs 2.8 +/- 0.7, 4.1 +/- 1.3 vs 2.9 +/- 0.6, 4.0 +/- 1.3 vs 2.7 +/- 0.8, 4.2 +/- 1.4 vs 2.9 +/- 0.8, p < 0.001 at each time point), 28-day mortality rate was 38.7%(12/31) for high p(cv-a)CO2 group and 22.8% (8/35) for low p(cv-a)CO2 group (p > 0.05), there were significant differences for p(cv-a)CO2 (p < 0.05) between low and high p(cv-a)CO2 groups, no differences for HR, MAP, CVP, ScvO(2) (p > 0.05). CI was inversely correlated with p(cv-a)CO2 value (r= -0.804, p < 0.001), but not for ScvO(2) (r= 0.08, p> 0.05). Receiver operating characteristic curve analysis confirmed the correlation of p(cv-a)CO2 with CI (AUC: 0.782;p < 0.001; 95% confidence interval: 0.710-0.853). The cut-off value for the best predictive value of CI >= 2.2 L/(min.m(2)) was p(cv-a)CO2 of 5.55 mmHg or lower with a sensitivity of 85.7% and specificity of 66.8%. Hence CI measured with USCOM is inversely correlated with p(cv-a)CO2 values in guiding the resuscitation of patients with septic shock.
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页数:5
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