1 Rapid action
2 Optimum blood levels achieved with accuracy and immediacy
3 Lifesaving in emergencies, prompt action
DISADVANTAGE
1 once administered it cannot be retrieved
2 drug cannot be easily removed from the circulation in adverse drug reaction
Part selected:
1 Superficial veins (venipuncture)
2 Basilic and cephalic veins (back of hand and dorsal forearm)- best peripheral veins > IV therapy
3 Veins of the antecubital area - NOT PREFERRED> EXTRAVASATION
1 provides constant & uniform analgesia
2 better pain control with less Side Effects
3 permits patients to medicate themselves for breakthrough pain
4 prevents pharmacokinetic and pharmacodynamic differences between patients from interfering with the effectiveness of analgesia