A cannula is usually short, that is why it blocks easily.
A picc line can be conceptualized as a longer cannula , extending into big veins close to the heart (central veins) , this allows for longer term use.
A cannula is usually short, that is why it blocks easily.
A picc line can be conceptualized as a longer cannula , extending into big veins close to the heart (central veins) , this allows for longer term use.