ABSTRACT
Objective To evaluate the effect of transversus abdominis plane (TAP) block on postoperative cognitive function in elderly patients undergoing laparoscopic surgery under general anesthesia.Methods Forty-eight male patients undergoing laparoscopic tension-free repair of inguinal hernia under general anesthesia,aged 65-75 yr,of American Society of Anesthesiologists physical status Ⅱ or Ⅲ,with body mass index of 20-28 kg/m2,were divided into 2 groups (n =24 each) using a random number table method:TAP block combined with general anesthesia group (group TG) and general anesthesia group (group G).Anesthesia was induced with midazolam,cisatracurium besylate,sufentanil and etomidate,and the patients were mechanically ventilated after laryngeal mask airway insertion.TAP block was performed through the anterior superior iliac spine approach,and 0.25％ ropivacaine 30 ml was injected in group TG.Anesthesia was maintained by target-controlled infusion of propofol and remifentanil and muscle relaxation by intravenously injecting cisatracurium.The occurrence of cerebral regional oxygen saturation (rSO2) and low rSO2 events (rSO2 ＜60％) was recorded at 1 min before anesthesia induction (T0),5 min after inserting the laryngeal mask airway (T1),at skin incision (T2),30 min after skin incision (T3),and at the end of surgery (T4).The consumption of propofol and remifentanil was recorded during surgery.Montreal Cognitive Assessment (MoCA) was used to evaluate the cognitive function of patients at 1 day before surgery and 7 days after surgery,and the development of postoperative cognitive dysfunction (POCD,MoCA scores＜ 26) was recorded.Results Compared with group G,the intraoperative consumption of propofol and remifentanil was significantly reduced,rSO2 was increased at T2~,and the incidence of low rSO2 events was decreased,MoCA scores were increased at 7 days after surgery,and the incidence of POCD was decreased in group TG (P＜0.05).Conclusion TAP block can reduce the incidence of POCD in elderly patients undergoing laparoscopic surgery under general anesthesia.
ABSTRACT
Objective To investigate the clinical short-term outcomes after laparoscopic total mesorectal excision (TME)for rectal cancer in China.Methods A systematic literature searching was performed to identify all randomized controlled trial(RCT) studies or well-designed retrospective studies on laparoscopic surgery(LS) and open surgery(OS) for rectal cancer published from January 2003 to October 2010 in China.Two reviewers independently screened and extracted the data.The reports which matched the inclusion criteria were analyzed with Revman 5.2.Results A total of 17 RCT studies and 3 retrospective studies (2246 patients)was included in this study.The basic features of 2 groups were balance.Compared to group OR,the incidence of complications such as postoperative wound infection (RR =0.30,95 ％ CI:0.17 ～0.54,P ＜ 0.01),pulmonary infection (RR =0.47,95％ CI:0.25 ～0.91,P ＜0.05),and ileus (RR =0.41,95％ CI:0.19 ～0.88,P ＜0.05)were significantly lower in group LS.No difference was observed in the incidence of peritoneal abscess(RR =0.78,95％ CI:0.38 ～ 1.60,P ＞0.05),anastomotic leakage(RR =0.66,95％ CI:0.38 ～ 1.16,P ＞0.05),and uroschesis(RR =0.57,95％ CI:0.26 ～ 1.25,P ＞0.05).Furthermore,parameters of postoperative recovery were compared between groups,LS group manifested early recovery.Conclusions Laparoscopic total mesorectal excision for rectal cancer,with minimal invasion,benefits the postoperative recovery and reduces incidence of complications.LS radical resection of rectal cancer is technically feasible,safe,and prospectively favorable.