Heparin vs normal saline.
Hook
M L
ML
Ose
P
P
D002408:Catheters, Indwelling / Q000451:nursing*; D006493:Heparin / Q000009:adverse effects / Q000627:therapeutic use*; D006801:Humans; D012965:Sodium Chloride / Q000627:therapeutic use*
D012965:Sodium Chloride; D006493:Heparin