الفهرس 
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Abstract
SUMMARY AND CCWCLUSlGNS
Pain Is the moat complex human experlenc*. Labour p*ln Ilk* other types of pains may prove harmful to th» motkar* and newborn i fantB. The Injection of local anaesthetic drug* Into the epldural apace was established a* an effective and safe method of providing obstetric analgesia, The method was not without di Bad vantages, include cardlovaiicular inatablllty and a possible Innraastd I of forceps deliveries associated with lone of sensory and motor tlon In tin lover birth o*n*l.
autoradlographle demonstration of opiate receptors In
f
substantia etl»tlnoi» of th* posterior hom cell of th* spinal
and th* dwnonBt ration of the naturally occurring endorphins opened the
wmy for the UB* of the narcotic drugs eplduralljr for post- operative
pain relief. The analgesia produced was Intense, prolonged and oegmsntal
In action. The uaa of iiarcotic druga during normal labour admlnistred
epidur»lly was still controversial for Itfl efficacy and Its aide-effects
to the mother and/or nenbom Infant.
Ritorphanol tartaratfl IB a new narcotic analgesic drug that
combine the properties of th* common oploids and the actions of an
t&t\
opiold antagonist such as naloione. It la five to eight times morn
potent than morphine In relief of post- operative pain. Sedation and