Application of Laryngeal Mask General Anesthesia Combined with Ultrasound-Guided Femoral Nerve Catheterization Femoral Nerve Block in Total Knee Arthroplasty
Objective:To investigate the application of laryngeal mask airway general anesthesia and femoral nerve block(FNB)guided by ultrasound in total knee arthroplasty(TKA).Methods:From August 2021 to November 2022,80 patients with unilateral TKA admitted to Yongchun County Hospital.They were randomly divided into two groups:the control group(group C)and the observation group(group T),with 40 cases in each group.Patients in group C were treated with a laryngeal mask under general anesthesia,and patient-controlled intravenous analgesia was administered after the surgery.Patients in group T were treated with general anesthesia using a laryngeal mask,combined with ultrasound-guided femoral nerve catheterization and FNB.They also underwent continuous FNB combined with patient-controlled intravenous analgesia(PCIA)for pain management.The mean arterial pressure(MAP),heart rate(HR),blood oxygen saturation(SPO2),total amount of sufentanil,and total amount of blood loss during the operation(T1),at 1 hour(T2),and at 2 hours(T3)after the start of the operation were compared between the two groups.Additionally,the six time points at anesthesia recovery(T4),24 hours(T5),and 48 hours(T6)after the operation were also compared.VAS pain scores were recorded at T4-T6 time points,including the first instance when the patient got out of bed.The total dosage of flurbiprofen axetil administered and the patients'overall satisfaction scores were also recorded.Results:In comparison to group C,group T experienced lower MAP and HR at six time points(T1-T6),reduced blood loss and total sufentanil dosage during the operation,and reduced VAS pain scores at three time points(T4-T6)following the procedure.Additionally,there was a decrease in the first ambulation time,a decrease in the total dose of Flurbiprofen Axetil,and an increase in the overall satisfaction score.There were statistically significant differences between the two groups(all P<0.05).Conclusion:Laryngeal mask general anesthesia combined with ultrasound-guided femoral nerve catheterization and FNB has a good anesthetic and analgesic effect in patients undergoing TKA.Perioperative vital signs of patients remain stable,intraoperative demand for opioids and blood loss are significantly reduced,and the time for the first postoperative activity is shortened,resulting in high patient satisfaction.
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