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Comparison of thromboelastographic profiles in pediatric patients with congenital heart disease according to existence of cyanosis.

Journal of Anesthesia 2023 Februrary
PURPOSE: Congenital heart disease (CHD) is divided into two groups according to cyanosis status. Cyanotic CHD has a low level of systemic oxygenation and is accompanied by increased erythropoiesis. We hypothesized that pediatric patients with CHD would exhibit different thromboelastographic profiles according to their cyanosis status.

METHODS: The study recruited 70 pediatric patients younger than 12 months who were undergoing surgery for CHD. Patients were allocated to the acyanotic group or cyanotic group after preoperative evaluations of their diagnosis and peripheral oxygen saturation in the operating room on room air. After inducing anesthesia, blood samples were collected. Hematologic and thromboelastographic profiles were evaluated.

RESULTS: Demographic data were similar between groups. The thromboelastographic profiles did not differ significantly between the groups. Hematologic profiles generally did not significantly differ between groups, except hematocrit (Hct) was higher in the cyanotic group (41.7 ± 6.8% vs. 35.3 ± 5.3%, p < 0.001). In patients under 3 months of age, prothrombin time (PT) (cyanotic group 15.4 ± 1.1 s vs. acyanotic group 14.2 ± 2.4 s, p = 0.02) and international normalized ratio (INR) (cyanotic group 1.24 ± 0.12 vs. acyanotic group 1.12 ± 0.27, p = 0.01) were significantly greater in the cyanotic group.

CONCLUSION: There were no differences in thromboelastographic profiles between the patients with or without cyanosis, regardless of age. The Hct was higher in the cyanotic group in patients under 12 months, while the PT was prolonged and the INR was increased in the cyanotic group in patients under 3 months.

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