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Anesthesia for in vitro fertilization : the addition of fentanyl to 1.5 % lidocaine . UNLABELLED Ultrasonically guided transvaginal oocyte retrieval is relatively short procedure that is performed on an out-patient basis . The optimal anesthetic technique should allow good surgical anesthesia with minimal side effects , a short recovery time , and , if possible , a high rate of successful pregnancy . Spinal anesthesia is often used in this institution , as well as many others , for this procedure . The addition of fentanyl may be effective for both intraoperative and postoperative pain relief . We assessed the effect of adding fentanyl to 1.5 % lidocaine in women undergoing ultrasonically guided oocyte retrieval . Seventy-eight women were randomized to receive 45 mg of hyperbaric 1.5 % lidocaine with or without 10 microg of fentanyl . Visual analog scale ( VAS ) pain scores were lower in the operating room ( OR ) ( P < 0.05 ) and postanesthesia care unit ( PACU ) ( P < 0.0005 ) for the group that received fentanyl . In addition , the amount of narcotic required in the PACU was less in the fentanyl group ( P < 0.005 ) . There was no difference in VAS scores the evening of or 24 h after the procedure . The amount of analgesics and narcotics required after discharge was the same for both groups . Timed variables , such as time to urination , ambulation , and discharge , were the same for both groups of women . The addition of fentanyl to lidocaine for transvaginal oocyte retrieval results in a more comfortable patient in the OR and PACU . IMPLICATIONS This study demonstrates that when fentanyl is added to a local anesthetic , lidocaine , with spinal anesthesia for egg retrieval procedures , patients are more comfortable during the procedure compared with those who receive lidocaine alone . In addition , the narcotic requirements of patients are less in the postanesthesia care unit .
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Intervention_Pharmacological
fentanyl
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Intervention_Pharmacological
lidocaine .
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Intervention_Pharmacological
Spinal anesthesia
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Intervention_Pharmacological
45 mg of hyperbaric 1.5 % lidocaine with or without 10 microg of fentanyl .
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Outcome_Other
Visual analog scale ( VAS ) pain scores
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Outcome_Other
amount of narcotic required
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Outcome_Other
VAS scores
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Outcome_Physical
amount of analgesics and narcotics required after discharge
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Outcome_Other
Timed variables , such as
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Outcome_Mental
time to urination
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Outcome_Other
,
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Outcome_Mental
ambulation
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Outcome_Other
, and discharge
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Participant_Condition
in vitro fertilization :
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Participant_Sex
women
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Participant_Condition
ultrasonically guided oocyte retrieval
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Participant_Sample-size
Seventy-eight
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Participant_Sex
women