The Analgesic Effect Of The Ultrasound-guided Anterior Serratus Plane Block In Day Breast Surgeries

Objective:This study intends to investigate the effectiveness and safety of ultrasound-guided anterior serratus plane block(SAPB)in day breast surgeries,being compared with ultrasound-guided parathoracic nerve block(TPVB).Methods:There were ninety patients received day breast surgery in the hospital between December 2018 and February 2019,and they were randomly divided into 3 groups of30,namely Group T(TPVB),Group S(SAPB)and Group C(local anesthesia).All patients were monitored for the basic vital signs in the operating room,including heart rate,electrocardiogram,blood pressureand pulse oximetry.The dexmedetomidine was intravenously pumped in 0.25 ?g/kg within 10 minutes,followed by a constant infusion of 0.05 ?g/kg and discontinued it 15 minutes before the end of surgery.Patients in Group T were under the operation of parathoracic nerve block,patients in Group S received the anesthesia of anterior serratus plane block,while doctors employed the local infiltration anesthetic around tumors in Group C.Meanwhile the times of anesthetic remedies in each group were recorded.Noted the VAS scores of three groups after surgeries 1h(T1),2h(T2),4h(T3),and 6h(T4)down.The adverse reactions from patients and the time for the operations in two groups,Group T and Group S,adopting the nerve block were registered as well.Results:The times of anesthetic remedies in Group T and Group S were significantly less than the times of anesthetic remedies in Group T and Group S(P> 0.05).A comparison of the T1 VAS scores among three groups was not statistically significant(P > 0.05).Group T and Group S got much lower VAS scores at T2,T3 and T4(P<0.05).There was no statistical significance of a comparison of the VAS scores at T2,T3 and T4 between Group T and Group S(P> 0.05).The incidences of postoperative complications(chills,nausea,vomiting,and muscle soreness in particular areas)in both Group C and Group S were far lower than that in Group T(P <0.05).There was no statistical significance in terms of the incidences of postoperative complications in Group C and Group S(P> 0.05).The time spent on the operation of nerve block in Group S was considerably less than that in Group T(P < 0.05).Conclusion:The analgesic effect of the ultrasound-guided anterior serratus plane block is obvious with high level of safety,and it is recommended for analgesia in day breast surgeries.