Although there are various methods for painless delivery such as using
entonox gas, most of the people are unfamiliar or concerned about it yet.
OBJECTIVES: In a clinical trial study, 98 pregnant women in active phase of delivery were studied randomly in two groups (intervention group = 49, control group = 49) after obtaining written consent. Efficacy, experience satisfaction, and also expectation of pregnant women about
entonox gas in two groups were compared, likewise in intervention group before and after using
entonox gas.
RESULTS: Most of the pregnant women receiving
entonox gas had less
labor pain (91.8%), and were satisfied with it (98%). The severity of
pain in the most of
entonox user was moderate level (46.94%), while for the control group it was severe (55.10%) which was significant, 40.82% of the mother in
entonox group had a severe
pain and 10.20% had a very severe
pain, whereas in the control group (55.10%) of the mother had a severe
pain and 26.53% of the had very severe
pain (P = 0.004). efficacy of
labor pain was in moderate level in most cases. 49% of pregnant women receiving gas described their experience as a good and excellent. 80.9% indicated that they will request the mentioned painless method in the future. The amount of suffering from gas side effects was mild in most patients of intervention group (63%). Expectations of the majority of pregnant women in intervention group (before receiving gas) and control group for painless delivery were weak (65.3%, 40.9%). The percentage of positive expectations had increased after receiving
entonox gas (P = 0.01). There was a difference between the expectations of intervention group receiving
entonox gas and control group (P = 0.001). Positive expectations were more in intervention group than the control group. Most differences of expectations in intervention group before and after receiving the gas were about higher efficacy (P = 0.001), more satisfaction (P = 0.001), fewer complications (P = 0.001), information about gas as painless delivery method (P = 0.02), and also previous experience of intolerable
labor pain (P = 0.04).
CONCLUSIONS: