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Randomized double blinded controlled clinical trial will be done with a total number of 75 patients will be divided into 3 groups. To compare between Ultra-sound guided rectus sheath block VS Field block infiltration in providing a good analgesia for patients undergoing midline hernia repair to detect which one is superior.
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75 patients undergoing midline hernia repair under general anesthesia will be recruited and will be randomly allocated using closed envelope technique as follows: Control group, Local infilteration (Field block infilteration) group, Ultra sound Guided Rectus sheath block group.
General anesthesia will be standardized for all patients with :
2 µg kg-1 fentanyl and 2 mg kg-1 propofol. Neuromuscular blockade will be achieved with 0.5 mg kg-1 atracurium followed by tracheal intubation.
Muscle relaxation will be maintained by 0.1mg / kg / 30 minute of Atracrurium. Anesthesia will be maintained by sevoflurane. Mechanical ventilation will be adjusted with fresh gas flow oxygen in air 30-50% at a rate of 1 L min-1to maintain end-tidal carbon dioxide of 35-40 mm Hg and Spo2 greater than 94%.
BIS values will be maintained between 40 and 60. All surgical procedures will be done in the range between 10 am and 1 pm and by the same surgical team.
All solutions used will be prepared by a colleague who will not participate into the study.
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75 participants in 3 patient groups, including a placebo group
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Data sourced from clinicaltrials.gov
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