Objective To evaluate the efficacy of programmed intermittent epidural bolus ( PIEB) for labor analgesia in parturients and the effect on neonates. Methods Two hundred primiparae with a sin?gleton fetus in vertex presentation, who requested labor analgesia, aged 21-36 yr, at 37 to 40 week gesta?tion, with cervical dilatation 1-3 cm, of American Society of Anesthesiologists physical statusⅠ or Ⅱ, were divided into 2 groups ( n=100 each) using a random number table: PIEB group and continuous epi?dural infusion ( CEI) group. PIEB regimens were programmed as 10 ml∕h starting from 1 h after the initial bolus. The programmed bolus dose was fixed at 5 ml with the lock?out interval set at 30 min. The drugs used in the analgesic pump were 0?08% ropivacaine and 0?4μg∕ml sufentanil in both groups. From the on?set of labor analgesia until 1 h after delivery, visual analog scale score was used to evaluate the uterine con?traction pain every hour. The modified Bromage score was used to assess the degree of motor block. The up?per spread of sensory block, total consumption of drugs, the number of attempts, duration of every stage, delivery mode, postpartum hemorrhage volume, and occurrence of adverse reactions ( dyspnea, hypoten?sion, pruritus, nausea, vomiting and urinary retention) were recorded. Apgar scores of the neonates were recorded, and the degree of primiparae′satisfaction with the analgesic efficacy was scored. Results Com?pared with group CEI, visual analog scale scores at T2?5 , the total consumption of drugs and the number of
attempts were significantly decreased, and the satisfaction score was significantly increased in group PIEB ( P<0?05) . The height of sensory block in the thoracic vertebra was significantly higher, and the height of sensory block in the lumbosacral spine was significantly lower in group PIEB than in group CEI ( P<0?05) . There were no significant differences between the two groups in the duration of every stage, delivery mode, postpartum hemorrhage volume, incidence of adverse reactions and Apgar scores of neonates (P>0?05). Conclusion PIEB provides reliable efficacy for labor analgesia in parturients, the degree of primiparae′satisfaction is high without increasing the occurrence of adverse reactions, and it exerts no effect on the neonates.

Objective To compare the analgesic efficacy and safety of the sole local anesthetic ropivacaine with the combination of both local anesthetic ropivacaine and opioidergic analgesic sufen-tanil given epidurally on the labor pain control.Methods After institutional review board approval and patient consent,a total of 481 nulliparas requesting epidural labor analgesia were randomized into two groups:a sole local anesthetic group (0.125% ropivacaine,group R)and a combination of local anesthetic and opioidergic analgesic group (0.125% ropivacaine+0.3 μg/ml sufentanil,group RS). Analgesic efficacy was measured using numerical rating scale (NRS)of pain and maternal visual ana-logue scale (VAS)analgesia satisfaction with regard to the first and the second stage of labor.Anal-gesic safety was measured with the Bromage scale of maternal safety and epidural labor analgesia re-lated side effects,as well as fetal safety including Apgar scoring and umbilical cord artery blood gas a-nalysis.Results A total of 346 participants completed the study,with 1 64 and 182 women in each group R and RS,respectively.The median NRS pain score during the first stage of labor was signifi-cantly lower in the combination group (2.2,IQR:1.8-2.7 )comparing to the sole local analgesic group (2.4,IQR:2-2.8)(P <0.001).No significant difference was observed in NRS pain score dur-ing the second stage of labor.Patients in both groups were rated the same VAS satisfaction of analge-sia.Patients in the sole local analgesic group experienced fewer side effects than those in the combina-tion group (37.7% versus 47.2%,P =0.082).The incidence of 1-min Apgar≤7 was lower in the sole local analgesic group 2 (1.2%) than the combination group 10 (5.5%) (P < 0.05 ). Conclusion The sole local anesthetic ropivacaine produces a comparable labor analgesic effect as the combination of both local anesthetic ropivacaine and opioidergic analgesic sufentanil but the former has less maternal side effects,and less incidence of lower 1-min Apgar scoring.

Objective To compare the influence of regular intermittent bolus of different con-centrations of ropivacaine for epidural labor analgesia on maternal intrapartum fever.Methods One hundred parturients aged from 20 to 35 years,of ASA Ⅰ or Ⅱ,singleton pregnancy,head presenta-tion,were randomly divided into two groups:Group H with 0.1% ropivacaine and 0.4 μg/ml sufen-tanil,Group L with 0.08% ropivacaine and 0.4 μg/ml sufentanil,50 cases in each group.Both groups were given epidural analgesic solution of 8 ml every 60 minutes respectively.Maternal tympanic membrane temperature,pain visual analogue scale (VAS),and modified Bromage score were recorded at the beginning of analgesia,1,2,3,4,5 h post analgesia,delivery,and 1 h post de-livery.And the anesthetics consumptions,labor duration,and neonatal Apgar score of 1,and 5 min were also observed.Results Compared with the beginning of analgesia,maternal tympanic membrane temperature significantly rose at 4,5 h post analgesia,delivery,and 1 h post delivery in both groups (P <0.05).Compared with group L,maternal tympanic membrane temperature significantly rose at 4,and 5 h post analgesia in group H (P <0.05).There was no significant difference in the incidence of intrapartum fever between the two groups.Compared with the beginning of analgesia,maternal VAS significantly decreased from 1 h post analgesia to 1 h post delivery in both groups (P <0.05);but there was no statistically significant difference between the two groups.Conclusion Regular inter-mittent epidural bolus of 0.08% or 0.1% ropivacaine combined with 0.4 μg/ml sufentanil can provide satisfactory labor analgesia,and body temperature rises more dramatically in women receiving higher concentration of local anesthetic than those receiving lower concentration.

Objective To investigate the distribution ofβ2-adrenergic receptor (β2-AR)genetic polymorphisms among the included parturient women and observe the relationship between the genetic polymorphisms and labor progress after labor analgesia.Methods A prospective observational study was conducted from March to June in 2014 at Nanjing Maternity and Child Health Care Hospi-tal.A total of 1 65 nulliparous women were enrolled in the study,and finally 1 52 patients were includ-ed after exclusion for several reasons.Theβ2-AR gene polymorphic variations at nucleotides encoding amino acids 1 6 and 27 were detected by polymerase chain reaction-restriction fragment length poly-morphism technique.And the demographic data,rate of oxytocin usage,length of labor progress and the incidence of cesarean section after labor analgesia were observed and recorded.Results The allele frequencies ofβ2-AR genetic polymorphism in the parturient women were dominantly presented in the form of Arg1 6Arg (AA)and Arg1 6Gly (AG)at 1 6 position and Gln27Gln(CC)at 27 position respec-tively.The demographic and background characteristics of the subjects didn’t present any significant differences among the groups with differentβ2-AR genetic polymorphism.And the differences of labor progress among β2-AR 27 genetic polymorphisms parturient women were not significant.However, the length of the first stage and the total labor progress in the β2-AR Arg1 6Arg homozygous were both significantly longer than that in the other two groups (P <0.05),and the incidence of cesarean section was also significantly higher (P <0.05 ).Furthermore,we also found that β2-AR Arg1 6Arg homozygous was related to cesarean delivery after labor analgesia through multivariate logistic regres-sion analysis (OR 2.87,95%CI 2.69-3.09).Conclusion The labor progress of the parturient women with β2-AR Arg1 6Arg homozygous is relatively slower,which maybe an important risk for the nullip-arous women transforming to cesarean delivery after labor analgesia.

Objective To observe the analgesic efficacy of epidural morphine for postpartum perineal pain in patients undergoing episiotomy.Methods After institutional reviewing board approval and patient consent,a total of 145 parturients requesting epidural labor analgesia and under-going episiotomy were randomized into three groups:M1,M2,and C,where in morphine 1 mg dis-solved in saline 10 ml,morphine 2 mg dissolved in saline 10 ml,or sole saline 10 ml was epidurally given immediately after umbilical cord clamp,respectively.Perineal pain at rest and movement within 24 hours after vaginal delivery were evaluated with present pain intensity (PPI).Further,the time in-terval between a moderate or severe PPI and epidural drug treatment were recorded.Besides,epidural morphine related side effects including nausea,vomiting,pruritus,and urinary retention were ob-served as well.Results The proportion of patients with moderate or severe pain at rest was signifi-cantly lower in group M2 (2.1%)compared to group M1 (15.7)and group C (19.1%)(P <0.05). Further,the time interval between a moderate or severe PPI and epidural drug treatment was signifi-cantly longer in group M2 (15.7±1.4 h)compared to group M1 (11.0±0.9 h)and group C (11.0 ±1.0 h)(P <0.05).No significant difference was found between groups M1 and group C with regard to morphine efficacy.However,the accumulated side effects including nausea,vomiting,pruritus, and urinary retention prominently increased in group M2 (102.1%)compared to group M1 (43.1%) and group C (12.8%)(P <0.05).Conclusion Although epidural morphine 2 mg may significantly decrease and postpone the occurrence of moderate or severe postpartum perineal pain,however,it de-serves consideration before clinical use owing to the increased side effects.

Objective To investigate the effects of programmed intermittent epidural bolus (PIEB) with continuous epidural infusion (CEI) at different time intervals for epidural labor analgesia.Methods One hundred and eighty-six nulliparous parturients were randomized to the groups P1, P2 and C.Epidural infusion was given initial loading dose: 10 ml (0.125% ropivacaine with 0.4 μg/ml sufentanil), followed by maintaining dose: 0.08% ropivacaine with 0.4 μg/ml sufentanil.Group P1 was given basal infusion 5 ml per 30 min, 30 min after the initial dose;group P2 was given basal infusion of 10 ml per 60 min, 60 min after the initial dose;CEI basal infusion of 10 ml/h immediately after the initial dose;PCEA (patient-controlled epidural analgesia dose) 5 ml (lockout interval: 30 min).The baseline maternal heart rate, noninvasive arterial blood pressure, SpO2, respiratory rate, and fetal heart rate tracing were recorded.The visual analog scale (VAS) was recorded during the first stage of labor and at full cervical dilation.The degree of motor block was assessed in both lower extremities using the modified Bromage score (MBS).The maximum blocked segment, the consumption of anesthetic, delivery mode, amount of oxytocin, The number of cases of motor block and intrapartum fever, the fetal Apgar scores,adverse reactions,maternal satisfaction score were recorded.Results The VAS obviously decreased in the three groups since receiving labor analgesia (P<0.05).The ratio of VAS score more than 3 scales in group PIEBⅡ was significantly lower than that in groups P1 and C (P<0.05).The maximum blocked segment increased in group P1, while The incidence of unilateral block was significantly decreased in group P2 (P<0.05).The total drug consumption.And the toatal number of PCA were decreased obviously in group PIEB (P<0.05).The initial PCA time was significantly prolonged in group P2 (P<0.05).The number of instrumental midwifery and intrapartum fever in group P2 were significantly lower than that in group C (P<0.05).Conclusion Programmed intermittent epidural bolus at the beginning 60 min intervals after the initial dose for epidural labor analgesia is scientific and effective.

Objective To study the effects of remifentanil with propofol and no positive pressure ventilation induction of anesthesia in 5 minutes-cesarean section on parturients and neonates. Methods Sixty pregnant women were randomly divided into ketamine anesthesia group (group L) and remifentanil anesthesia group (group R).In group L,anaesthesia was induced with ketamin 0.5 mg/kg+propofol 2 mg/kg and group R with remifentanil 1 μg/kg+propofol 2 mg/kg.Blood pres-sure,heart rate,oxygen saturation and pulse rate of maternal were recorded at intubation (T1 ),inci-sion (T2 ),and cutting the umbilical cord (T3 ).The infant Apgar scores at 1 minute and 5 minute af-ter birth,the delivery time of the fetus and umbilical blood gas values were recorded.Results The systolic blood pressure (SBP)and heart rate (HR)were significantly higher at T1 and T2 in group L than those in group R (P <0.05).The SBP,DBP and HR had not significant difference at T3 .The delivery time of the fetus and the infant Apgar scores at 1 minute and 5 minute between the two groups had no statistically significant differences.Conclusion Remifentanil combined with propofol and without positive pressure ventilation induction of anesthesia can be safely used in 5 minutes-cesar-ean section.The maternal hemodynamics is more stable without increasing the risk of neonatal respira-tory depression.

Objective: Stress and cognitive impairment are common postoperative complications in elder patients who have undergone hip surgery. The objective of the work is to evaluate the effects of remimazolam supplemented to combined general anesthesia in improving stress and cognitive performance. Methods: A total of 120 patients were included to receive a low dose of remimazolam (0.1 mg/kg/h) intravenously combined with general anesthesia or general anesthesia alone during hip surgery. Assessments were used for evaluating cognitive and psychological performance respectively before surgery (T0), 24 h (T5), and 72 h (T6) after surgery. Physiological parameters including mean artery pressure, heart rate, and blood oxygen levels (SpO2) were measured at T0, 30 min after anesthesia (T1), and completion of surgery (T2). Stress indexes including serum cortisol and norepinephrine levels were measured at T0, T5, and T6. The visual analog scale pain scores were also acquired at 6 h after surgery, 12 h after surgery, and T6. Serum interleukin-6 and tumor necrosis factor-α levels were acquired at T0, T2, and T6. Results: Heart rate and SpO2 levels in the combination group were significantly improved compared to the control group. Serum cortisol and norepinephrine levels were the highest at T1 and decline over time until T5 in both groups, the two stress indexes of the combination group were significantly lower at T1 and T2. Conclusion Remimazolam supplemented to combined general anesthesia demonstrated significant benefit in reducing stress and cognitive dysfunction in elder patients who underwent hip surgery.

Objective:To evaluate the effect of interstitial lung disease(ILD) on postoperative morbidity and mortality in pulmonary resection for lung cancer patients.Methods:We retrospectively analyzed 971 patients undergoing pulmonary operation from January 2010 to January 2018 in our hospital. Clinical data including age, sex, history of chronic obstructive pulmonary disease(COPD), smoking history, smoking index, American Society of Anesthesiologists(ASA) classification, forced expiratory volume in 1 s(FEV1) % predict, surgical procedure, video assisted thoracoscopic surgery(VATS) or not, intraoperative blood transfusion, anesthesia time, operation time/one-lung ventilation time, blood loss, histology, postoperative morbidity, 60-days mortality, onset of acute exacerbation of interstitial lung disease(AE-ILD), drainage, extubation time, and postoperative stay were collected and analyzed.Results:There were 80(8.2%) and 891(91.8%) patients in ILD and non-ILD group, respectively. AE-ILD occurred in 5 patients, with a 60-day mortality of 80%. A multivariate regression analysis identified that the sex( P=0.023), ILD( P=0.001), COPD( P=0.027) were independent risk factors for postoperative morbidity. ILD( P=0.023) and postoperative morbidity( P=0.001) were independent risk factors for 60-day mortality in multivariate analysis. Conclusion:Patients with ILD had a higher incidence of postoperative morbidity and 60-day mortality. Based on the obvious postoperative morbidity and mortality, special attention and management should be taken in ILD patients.