横断面按压联合血管超声仪预防PICC导管异位至颈内静脉的应用研究
횡단면안압연합혈관초성의예방PICC도관이위지경내정맥적응용연구
Application research on cross sectional press combined with vascular ultrasound instrument for prevention of PICC catheter heterotopia to jugular vein
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