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Meaning and effect of ScvO2 combined with P(cv-a)CO2 on fluid resuscitation in the patients with septic shock |
Niu Xing-guo, Zhang Si-sen, Jiao Xian-fa, Guo Yu-hong, Wang Xiao-wen, Li Jin-xiu, Wang Hong-yu |
Intensive Care Unit, Zhengzhou People′s Hospital, Zhengzhou 450003, China |
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Abstract Objective To investigate the value of central venous oxygen saturation (ScvO2) combined with central venous-arterial blood carbon dioxide partial pressure difference [P(cv-a)CO2] in fluid resuscitation in the patients with septic shock. Methods A total of 94 patients with septic shock admitted to our hospital from January 2016 to February 2018 were enrolled in the study. They were randomly divided into the observation group and the control group(47 patients in each group). After the enrollment, the central venous catheter was routinely placed, and the fluid resuscitation was performed according to the clinical treatment guidelines. The control group was guided by ScvO2 as the target for fluid resuscitation, and the observation group was guided by ScvO2 combined with P(cv-a)CO2 to guide the fluid resuscitation. The changes of monitoring indexes [CVP, MAP,ScvO2, cardiac index (CI), lactate clearance], and the outcome of the disease [acute physiology and chronic health status score (APACHE Ⅱ), sequential organ failure score (SOFA)], basic treatment and prognosis of pulmonary edema, 28-day mortality were compared. Results ①Changes of monitoring indicators: CVP, MAP, ScvO2 and CI were not significantly different between the two groups before fluid resuscitation (P>0.05); after 6 hours of fluid resuscitation, CVP, MAP, ScvO2 and CI in the two groups were better than those before fluid resuscitation (P<0.05). The clearance rates of CVP, ScvO2, CI and lactic acid in the observation group were higher than those in the control group (P<0.05). ②Prognosis: there was no significant difference in APACHE Ⅱ and SOFA between the two groups before fluid resuscitation (P>0.05); APACHE Ⅱ and SOFA of the two groups after fluid resuscitation 6 hours were lower than those before fluid resuscitation (P<0.05), and the observation group was lower than that of the control group (P<0.05). ③Basic treatment conditions: ICU stay time (9.31±4.24) days, mechanical ventilation time (11.72±4.93) days in the observation group were shorter than those in the control group [(13.27±5.01)d and(14.83±5.26)d, P<0.05], norepinephrine dosage (13.01±5.21) mg and dobutamine dosage (87.26±28.34) mg were less than those in the control group [(16.73±6.44)mg and(109.47±31.23)mg,P<0.05]. ④Prognosis: the incidence of pulmonary edema in the observation group was 19.15% (9/47) and 14.89% (7/47) in the control group (P>0.05); the 28-day mortality was 6.38% (3/47) and 14.89% (7/47) in the control group(P>0.05). Conclusion The combined monitoring of ScvO2 and P(cv-a)CO2 has important guiding significance in fluid resuscitation of septic shock patients. It is helpful to further ensure effective resuscitation, improve therapeutic effect, shorten ICU stay time and mechanical ventilation time, and does not increase the risk of pulmonary edema. However, there is no direct and effective data to prove that it can reduce mortality.
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About author:: Niu Xing-guo, E-mail:kmepngc@163.com |
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