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Objective To explore the effects of positive end-expiratory pressure on intraoperative pulmonary function and respiratory mechanics in patients receiving continuous hyperthermic peritoneal perfusion.Methods Ninety patients (55 males,35 females,aged 40-70 years,ASA grade Ⅰ-Ⅲ) undergoing continuous hyperthermic peritoneal perfusion were selected and divided into 3 groups (n=30 each): regular volume controlled ventilation group (group A),5 cm H2O PEEP group (group B) and 10 cm H2O PEEP group (group C).After tracheal intubation,the mechanical ventilation parameters in groups A,B and C were respectively given tidal volume (VT) 10 ml/kg without positive end-expiratory pressure (PEEP),VT 6 ml/kg with 5 cm H2O PEEP,and VT 6 ml/kg with 10cm H2O.PETCO2 was maintained at 35-45 mm Hg.Arterial blood samples were collected for blood gas analysis 5 min after (T1),before CHPP (T2),the end of CHPP (T3),and before the end of mechanical ventilation (T4).Besides,Pplat,Pmean,Ppeak,PaCO2,PaO2were recorded and Cdyn,OI,RI,A-aDO2 as well as VD/VT were calculated at all time points simultaneously.Pulmonary complications during 7 days after surgery were also recorded.Results Compared with group A,Ppeak,Pplat,A-aDO2 and RI were all significantly lower (P<0.05),while OI and VD/VT were higher in groups B and C at T1-T4 (P<0.05);at T2-T4,Cdyn and PaO2 were higher with lower Pmean in groups B and C (P<0.05).Compared with T1,Ppeak,Pplat and Pmean were higher (P<0.05) while Cdyn was lower (P<0.05) in group A at T2-T4;In Group B,Ppeak and Pplat were higher at T3 (P<0.05),Pmean was higher at T2-T4 (P<0.05) and Cdyn was lower at T3,T4 (P<0.05);in group C,Ppeak,Pplat and Pmean were all higher at T2-T4 (P<0.05),Cdyn was lower at T3,T4 (P<0.05);OI and PaO2 were lower (P<0.05),while A-aDO2,VD/VT and RI were all higher (P<0.05) at T2-T4 in the three groups.In addition,the incidence rates of pulmonary infection,hypoxemia,and atelectasis were significantly lower in groups B and C during 7 days after surgery than those of group A (P<0.05).Conclusion PEEP (5 cm H2O) with VT (6 ml/kg) could effectively improve intraoperative pulmonary function and reduce the risk of perioperative pulmonary complications of the patients receiving continuous hyperthermic peritoneal perfusion.
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Objective To observe the efficiency and safety of dexmedetomidine and tramadol to prevent postoperative shivering after liposuction. Methods A total of 80 patients undergoing liposuction were randomly divided into 4 groups with 20 cases in each group:dexmedetomidine 0.4 μg/kg(D1 group),dexmedetomidine 0.6 μg/kg(D2 group),tramadol 1 mg/kg(T group),and saline control group(N group).These patients received an intravenous injection of dexmedetomidine, tramadol, or saline at the time of surgical suture.The respiratory recovery time,awakening time, extubation time, orientation recovery time, the case of shivering and adverse reactions after surgery were recorded. Results The respiratory recovery time,awakening time, and extubation time in the group D2 were longer than those in the other 3 groups[respiratory recovery time:(5.5 ±1.3)min vs.(6.2 ±1.2)min vs.(5.1 ± 1.8)min vs.(5.0 ±0.9)min,F=3.330,P=0.024;awakening time:(10.2 ±1.3)min vs.(11.5 ±1.5)min vs.(9.7 ±2.7) min vs.(9.5 ±1.8)min,F=4.429,P=0.006;extubation time:(12.9 ±1.5)min vs.(14.2 ±1.6)min vs.(12.8 ±2.4)min vs.(12.7 ±1.9)min,F=2.845,P=0.043].Postoperative shivering incidence in the group N was higher than those in the other 3 groups(3 cases vs.2 cases vs.3 cases vs.9 cases,χ2=9.188,P=0.027).The incidence of nausea and vomiting in the group T was higher than those in the other 3 groups(2 cases vs.1 case vs.8 cases vs.4 cases,χ2=9.436,P=0.024).The incidence of tachycardia in the group D2 was higher than those in the other 3 groups(3 cases vs.7 cases vs.1 case vs.1 case,χ2=9.412, P=0.024). Conclusion Dexmedetomidine 0.4 μg/kg by intravenous injection can treat postoperative shivering after liposuction effectively and reduce the adverse reactions.
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Objective To observe the efficiency and safety of dexmedetomidine and tramadol to prevent postoperative shivering after liposuction. Methods A total of 80 patients undergoing liposuction were randomly divided into 4 groups with 20 cases in each group:dexmedetomidine 0.4 μg/kg(D1 group),dexmedetomidine 0.6 μg/kg(D2 group),tramadol 1 mg/kg(T group),and saline control group(N group).These patients received an intravenous injection of dexmedetomidine, tramadol, or saline at the time of surgical suture.The respiratory recovery time,awakening time, extubation time, orientation recovery time, the case of shivering and adverse reactions after surgery were recorded. Results The respiratory recovery time,awakening time, and extubation time in the group D2 were longer than those in the other 3 groups[respiratory recovery time:(5.5 ±1.3)min vs.(6.2 ±1.2)min vs.(5.1 ± 1.8)min vs.(5.0 ±0.9)min,F=3.330,P=0.024;awakening time:(10.2 ±1.3)min vs.(11.5 ±1.5)min vs.(9.7 ±2.7) min vs.(9.5 ±1.8)min,F=4.429,P=0.006;extubation time:(12.9 ±1.5)min vs.(14.2 ±1.6)min vs.(12.8 ±2.4)min vs.(12.7 ±1.9)min,F=2.845,P=0.043].Postoperative shivering incidence in the group N was higher than those in the other 3 groups(3 cases vs.2 cases vs.3 cases vs.9 cases,χ2=9.188,P=0.027).The incidence of nausea and vomiting in the group T was higher than those in the other 3 groups(2 cases vs.1 case vs.8 cases vs.4 cases,χ2=9.436,P=0.024).The incidence of tachycardia in the group D2 was higher than those in the other 3 groups(3 cases vs.7 cases vs.1 case vs.1 case,χ2=9.412, P=0.024). Conclusion Dexmedetomidine 0.4 μg/kg by intravenous injection can treat postoperative shivering after liposuction effectively and reduce the adverse reactions.
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Objective To evaluate the effect of sedation with regional anesthesia with dexmedeto-midine on postoperative cognitive function in elderly patients with diabetes mellitus. Methods A total of 180 elderly patients of either sex with diabetes foot, aged 65-80 yr, weighing 45-90 kg, of American So-ciety of Anesthesiologists physical status ⅡorⅢ, with preoperative Mini-Mental State Examination score>24, undergoing elective débridement, were divided into 2 groups(n=90 each)using a random number table: sedation with dexmedetomidine group(group D)and routine sedation control group(group C). Lumbar plexus block and sciatic nerve block were performed, after the reliable efficacy was achieved, dexmedetomidine was intravenously infused in a dose of 0.5 μg∕kg for 10 min followed by an infusion of 0.5 μg·kg-1·h-1until the end of surgery. Midazolam 0.02-0.04 mg∕kg was intravenously injected and mid-azolam 1 mg was injected intermittently during operation in group C. Ramsay sedation scores were main-tained between 2 and 4. At 30 min before surgery(T1), 1 h after the beginning of surgery(T2), at the end of surgery(T3), 6 h after the end of surgery(T4), and 24 h after the end of surgery(T5), venous blood samples were collected for determination of the level of blood glucose and plasma cortisol(Cor)con-centrations. Mini-Mental State Examination scores were assessed at 1 day before surgery and 1 and 3 days after surgery, and the occurrence of postoperative cognitive dysfunction was recorded in a short time period after operation. Results Compared with the baseline at T1, the level of blood glucose at T2-5and plasma Cor concentrations at T3,4were significantly increased in group C, and plasma Cor concentrations were sig-nificantly increased at T3,4(P<0.05), and no significant change was found in the level of blood glucose at T2-5in group D(P>0.05). Compared with group C, the level of blood glucose at T3-5and plasma Cor con-centrations at T3,4were significantly decreased, Mini-Mental State Examination scores were increased at 1 and 3 days after operation, and the incidence of postoperative cognitive dysfunction in a short time period after operation was decreased in group D(P<0.05). Conclusion Sedation with regional anesthesia with dexmedetomidine can improve postoperative cognitive function in elderly patients with diabetes mellitus.
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Objective To compare shikani optical stylet and Mc coy laryngoscope on elder patients with intratracheal intubation anesthesia.Methods 112 cases of elder patients with intratracheal intubation anesthesia were enrolled as study objects, all patients were divided into shikani optical stylet group (52 cases), Mc coy laryngoscope group (60 cases) according to different intubation way. Then detect the hemodynamic parameters, stress-related indicators, EEG relevant indicators of the two groups.Results One time success rate and total success rate in Shikani visual laryngoscope group was higher than Mc Coy visual laryngoscope group, while many times intubation rate was lower (P < 0.05); T1, T2 MAP, HR levels were lower in Shikani optical stylet group than Mc Coy laryngoscope group patients (P < 0.05); Plasma levels of epinephrine, norepinephrine, and glucose on T1, T2 in Shikani optical stylet group was lower than that in Mc Coy laryngoscope group (P < 0.05); T1, T2 BIS, ECoG grading, αβ% values in Shikani optical stylet group was lower than that in Mc coy laryngoscope group (P < 0.05).Conclusions Elderly patients with intratracheal intubation anesthesia received shikani optical stylet can enhance the success rate of intubation and effectively stabilize patients circulatory system, reduce excessive physical stress caused by various system dysfunction, which shows positive significance.
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OBJECTIVE@#To observe the effects of different maintain doses of Dexmedetomidine on plasma cortisol and glucose during anesthesia recovery period in patients undergoing uvulopalatopharyngoplasty under sevoflurane inhalation anesthesia.@*METHOD@#In this prospective, randomized, double-blind study, 120 ASA I and II patients undergoing selective uvulopalatopharyngoplasty under general anesthesia were included. The patients were randomly allocated to three groups (n = 40): Dexmedetomidine low maintain dose group (D1), Dexmedetomidine high maintain dose group (group D2) and control group (group C). The Dexmedetomidine groups and control group were given Dexmedetomidine 1 microg/kg and normal saline in 20 ml within 15 min just before induction of anesthesia. Then Dexmedetomidine were maintained at 0.2 microg x kg(-1) x h(-1) and 0.7 microg x kg(-1) x h(-1) in group D1 and group D2 and were withdrawed 5 min before the end of operation, the same maintained speed of normal saline was given in group C. BIS value was maintained at 40-60 by adjusting the inhaled concentration of sevoflurane. Anesthetic was withdrawed 10 min before the end of operation. Thus, plasma cortisol concentration and blood glucose was needed to be detected just before anesthesia (T0), tracheal extubation (T1), 5 min after extubation (T2) and 15 min after extubation (T3). Duration of operation and anesthesia, consumption of sevoflurane, emergence time, extubation time, the occurrence of dysphoria, bucking and hypoxemia (SpO2 0.05).@*CONCLUSION@#In the patients undergoing UPPP under sevoflurane inhalation anesthesia, Dexmedetomidine infused at 0.2 microg x kg(-1) x h(-1) maintains a stable hemodynamics without respiratory depression, alleviates stress response during extubation and reduces both the consumption of sevoflurane and the occurrence of dysphoria without prolonging emergence time and extubation time.
Subject(s)
Adult , Female , Humans , Male , Middle Aged , Anesthesia Recovery Period , Anesthesia, Inhalation , Blood Glucose , Metabolism , Dexmedetomidine , Double-Blind Method , Hydrocortisone , Blood , Hypnotics and Sedatives , Methyl Ethers , Otorhinolaryngologic Surgical Procedures , Palate, Soft , General Surgery , Pharynx , General Surgery , Sevoflurane , Uvula , General SurgeryABSTRACT
Objective To explore effect of different withdrawal time of dexmedetomidine (DEX) on the quality of general anesthesia recovery.Methods Eighty patients of ASA Ⅰ or Ⅱ undergoing lymph surgery were randomly assigned to four groups (n =20).Groups D1,D2 and D3 received DEX 0.5 μg/kg as bolus before induction,continued with 0.5 μg/(kg · h) by infusion until one hour,30 min before the end of operation and the end of operation,respectively.Group C received equal volume of normal saline.Mean artery pressure (MAP),heart rate (HR) and pulse oxygen saturation (SpO2) were observed during and after operation.Spontaneous respiration recovery time,eyes open time,extubation time,orientation recovery time,observer's assessment of alertness/sedation score (OAA/S),restlessness score (RS),and visual analogue scales (VAS) were observed after operation.Results For MAP and HR in Groups D2 and D3,there were no statistically significant difference during extubation compared to those at preoperation,but at the same time point,they were lower than those in group C (P ＜ 0.05).For groups C and D1,MAP and HR at extubation and 5 min after extubation were higher than those at preoperation (P ＜0.05).Spontaneous respiration recovery time,eyes open time,extubation time,orientation recovery time in group D3 were significantly longer than those in Group C (P ＜ 0.05),while there were no statistically significantly difference between groups D1,D2,and group C.OAA/S in group D3 was significantly lower than that in group C (P ＜ 0.05) at extubation.Incidence of restlessness,VAS,and cases given analgesic 2 hours after operation in groups D2 and D3 were significantly lower than those in groups C and D1.Compared to those in group C,dosages of propofol and remifentanil in groups D2 and D3 were significantly lower.Conclusions Dexmedetomidine administered of 0.5 μg/kg before induction,continued with infusion of 0.5 μg/(kg · h) until 30 min before the end of operation,may improve emergence,without influencing the awakening time of patients,and prolong the duration time of analgesia which comfort the patients.
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Objective To explore the influence of fluid management and prognosis guided by goal direction on patients undergoing gastrointestinal surgery.Methods Eighty ASA grade Ⅰ-Ⅲ,consecutive consenting patients undergoing gastrointestinal surgery were divided into observation group (40 patients)and control group (40 patients) by random digits table method.The intraoperative fluid management in control group was based on central venous pressure(CVP),and kept CVP at 8-10 mmHg(1 mmHg =0.133 kPa).The intraoperative fluid management in observation group was based on stroke volume variation (SVV),and kept SVV at 10 ％-12％.The operation time,intraoperative and postoperative 3 d fluid management,time of defecation and exhaust,time of full or semi-liquid diet,length of stay in hospital,rate of complications after operation for 48 h between two groups were compared.Results The volume of total fluid,colloid solution and crystalloid solution received during operation in observation group were significantly lower than those in control group[(2 686.0 ± 977.5) ml vs.(4 837.5 ± 1 566.0) ml,(792.4 ± 197.6) ml vs.(1 284.6 ± 356.7)ml,(1 894.9 ± 460.4) ml vs.(3 569.9 ± 1 318.7) ml] (P ＜ 0.05).The time of semi-liquid diet,length of stay in hospital in observation group were significantly lower than those in control group [(171.1 ± 45.3) h vs.(235.8 ±89.5) h,(11.4 ±1.8) d vs.(14.7 ±4.9) d] (P＜0.05).The time of full liquid diet,time of defecation and exhaust between two groups had no significant difference(P ＞ 0.05).The rate of complications between two groups had no significant difference(P ＞ 0.05).Conclusion Compared with monitoring CVP,the fluid management based on SVV can decrease the fluid volume during operation and shorten the length of stay in hospital.
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<p><b>OBJECTIVE</b>To extract and purify of solamargine from Solanum nigrum, and to research its antineoplastic effects.</p><p><b>METHOD</b>S. nigrum was extracted refluently with 80% alcohol, solamargine was purified with silica gel column chromatography and recrystallization, and then conducted its structure identification and purity checks. Screened the effect on human tumor cell groth inhibition in vitro by MTT assay, and researched on the features in mice with H22 liver cancer or Ehrlich ascites tumor of solamargine.</p><p><b>RESULT</b>The concent of solamargine reached 97.9%. Solamargine had significantly inhibition on 6 tumor cells in vitro, and it had significantly inhibition on mice with H22 liver cancer or ehrlich ascites tumor in the 2.4 mg x kg(-1) dose of i.v.</p><p><b>CONCLUSION</b>Solamargine have the antineoplastic effect.</p>