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Chinese Journal of Critical Care Medicine(Electronic Edition) ›› 2020, Vol. 13 ›› Issue (04): 253-257. doi: 10.3877/cma.j.issn.1674-6880.2020.04.003

Special Issue:

• Original Article • Previous Articles     Next Articles

Risk factors for low cardiac output syndrome after total anomalous pulmonary venous connection correction

Jun Mao1, Yaoqiang Xu1, Yan Chen1, Yan He1, Xiangming Fan1, Pei Cheng1, Junwu Su1,()   

  1. 1. Center of Pediatric Cardiology, Beijing Anzhen Hospital, Capital Medical University, Being Institute of Heart Lung and Blood Vessel Diseases, Beijing 100029, China
  • Received:2020-03-26 Online:2020-08-01 Published:2020-08-01
  • Contact: Junwu Su
  • About author:
    Corresponding author: Su Junwu, Email:

Abstract:

Objective

To study risk factors for the low cardiac output syndrome (LCOS) after total anomalous pulmonary venous connection (TAPVC) correction.

Methods

Totally 153 child patients undergoing TAPVC correction were selected from the Center of Pediatric Cardiology of Beijing Anzhen Hospital, Capital Medical University between January 2014 and January 2018. They were divided into a LCOS group (n = 50) and a no LCOS group (n = 103) according to whether the LCOS appeared after operation. Clinical data before, during and after operation were compared between the two groups, and risk factors of LCOS after TAPVC correction were analyzed by Logistic regression analysis.

Results

The perioperative mortality of child patients in the LCOS group was significantly higher than that in the no LCOS group [22.0% (11/50) vs. 3.9% (4/103), χ2 = 12.493, P < 0.001]. The age [3 (1, 5) months vs. 5 (2, 12) months, H = 2.722, P = 0.006], body mass [5.2 (4.5, 6.0) kg vs. 6.0 (5.0, 8.0) kg, H = 3.519, P < 0.001], preoperative left ventricular end-diastolic diameter [15 (13, 17) mm vs. 18 (15, 23) mm, H = 4.170, P < 0.001], preoperative atrial septal defect size [6 (4, 8) mm vs. 8 (6, 11) mm, H = 3.368, P = 0.001], preoperative oxygen saturation [85 (80, 86)% vs. 85 (82, 87)%, H = 2.168, P = 0.030], intraoperative cardiopulmonary bypass time [100 (75, 137) min vs. 88 (70, 109) min, H = 2.459, P = 0.014] and delayed chest closure (χ2 = 4.484, P = 0.034) were statistically significantly different between the LCOS group and no LCOS group. Then the age, body mass, preoperative left ventricular end-diastolic diameter, preoperative atrial septal defect size, preoperative oxygen saturation, delayed chest closure and intraoperative cardiopulmonary bypass time were included in the Logistic regression analysis. The results showed that the preoperative left ventricular end-diastolic diameter [odds ratio (OR) = 0.851, 95% confidence interval (CI) (0.732, 0.989), P = 0.035] and preoperative oxygen saturation [OR = 0.901, 95%CI (0.829, 0.979), P = 0.014] were protective factors of LCOS after TAPVC correction, and the intraoperative cardiopulmonary bypass time [OR = 1.012, 95%CI (1.001, 1.022), P = 0.028] was its risk factor.

Conclusions

Attention should be paid to the preoperative left ventricular end-diastolic diameter, oxygen saturation and intraoperative cardiopulmonary bypass time of TAPVC patients. If LCOS signs are found, early intervention should be made to improve their prognosis.

Key words: Low cardiac output syndrome, Congenital heart disease, Total anomalous pulmonary venous connection, Risk factors

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