艾司氯胺酮复合麻醉在小儿瘢痕非插管全身麻醉患者超脉冲点阵二氧化碳激光治疗术中的应用及效果观察

目的探讨艾司氯胺酮+七氟烷+小儿布洛芬肛栓在小儿烧伤后增生性瘢痕非插管全身麻醉患者超脉冲二氧化碳点阵激光(UFCL)治疗术中的应用及效果观察。 方法选取2020年1月至2021年4月就诊于空军军医大学第一附属医院烧伤与皮肤外科门诊89例烧伤后增生性瘢痕患儿纳入本随机对照临床试验。将患儿采用随机数字表法分为氯胺酮+丙泊酚组[共42例，其中男22例，女20例，平均年龄为(44.33±14.87)个月]和复合麻醉镇痛组(艾司氯胺酮+七氟烷+小儿布洛芬肛栓)[共47例，男24例，女23例，平均年龄(44.47±14.65)个月]；在麻醉前和术中监测患儿血流动力学指标以及警觉/镇静(OAA/S)量表评分；在麻醉清醒时(T0)、麻醉清醒后1 h(T1)、麻醉清醒后2 h(T2)应用儿童疼痛行为量表(FLACC)对患儿疼痛程度进行评估；分别于术前和术后6个月应用温哥华瘢痕量表(VSS)对瘢痕进行评分。对数据行独立样本t检验和χ²检验。 结果(1)麻醉前氯胺酮+丙泊酚组血流动力学及OAA/S量表评分[平均动脉压(63.71±3.40)mmHg、心率(107.21±9.45)次/min、呼吸(25.29±2.34)次/min、血氧饱和度(99.00±0.80)%、OAA/S量表评分(4.64±0.49)分]与复合麻醉镇痛组[平均动脉压(63.87±3.57)mmHg、心率(109.34±12.21)次/min、呼吸(26.473.53)次/min、血氧饱和度(98.77±0.91)%、OAA/S量表评分(4.57±0.50)分]比较差异均无统计学意义(t＝-0.213、0.490、-1.840、1.280、0.204，P>0.05)；麻醉后手术中氯胺酮+丙泊酚组[平均动脉压(56.29±2.43)mmHg、心率(94.48±7.01)次/min、呼吸(21.07±3.03)次/min、血氧饱和度(96.12±1.64)%、OAA/S量表评分(2.07±0.71)分]与复合麻醉镇痛组[平均动脉压(62.87±3.56)mmHg、心率(108.791±1.93)次/min、呼吸(26.52±3.48)次/min、血氧饱和度(99.23±0.67)%、OAA/S量表评分(1.45±0.50)分]比较差异有统计学意义(t＝-10.068、-6.794、-7.824、-11.960、4.820，P<0.05)。(2)氯胺酮+丙泊酚组患儿麻醉清醒时[T0：(4.40±1.17)分]麻醉清醒后1 h[T1：(2.05±0.88)分]、麻醉清醒后2 h[T2：(0.43±0.63)分]FLACC评分比复合麻醉镇痛组[(1.32±0.96)、(0.43±0.62)、(0.13±0.34)分]评分高，说明患儿疼痛度高，且数据比较差异均有统计学意义(t＝10.139、13.669、2.794，P<0.05)。(3)术前及术后6个月瘢痕评分：氯胺酮+丙泊酚组[(9.33±1.60)、(4.48±1.11)分]与复合麻醉镇痛组[(8.43±2.04)、(4.26±1.04)分]相比差异均无统计学意义(t＝2.320、0.940, P>0.05)。 结论复合麻醉镇痛措施在小儿烧伤后增生性瘢痕非插管全身麻醉患者(UFCL)治疗术中应用效果较好，可使患儿术中血流动力学平稳，术中镇静良好，术后疼痛度较低，对于激光治疗效果无影响。     

EEG power spectral density under Propofol and its association with burst suppression,a marker of cerebral fragility

ObjectiveUnder General Anesthesia (GA), age and Burst Suppression (BS) are associated with cognitive postoperative complications, yet how these parameters are related to per-operative EEG and hypnotic doses is unclear. In this prospective study, we address this question comparing age and BS occurrences with a new score (BP_TIVA) based on Propofol doses, EEG and alpha-band power spectral densities, evaluated for SEF₉₅ = 8–13 Hz.Methods59 patients (55 [34–67] yr, 67% female) undergoing neuroradiology or orthopedic surgery were included. Total IntraVenous Anesthesia was used for Propofol and analgesics infusion. Cerebral activity was monitored from a frontal electrodes montage EEG.ResultsBP_TIVA was inversely correlated with age (Pearson r = −0.78, p < 0.001), and was significantly lower (p < 0.001) when BS occurred during the GA first minutes (induction). Additionally, the age-free BP_TIVA score was better associated with BS at induction than age (AUC = 0.94 versus 0.82, p < 0.05).ConclusionWe designed BP_TIVA score based on hypnotics and EEG. It was correlated with age yet was better associated to BS occurring during GA induction, the latter being a cerebral fragility sign.SignificanceThis advocate for an approach based on evaluating the cerebral physiological age (« brain age ») to predict postoperative cognitive evolution.     

Anesthetic management of parturients with Arnold Chiari malformation-I: a multicenter retrospective study

BackgroundConsensus regarding the safest mode of delivery and anesthetic management for parturients with Arnold Chiari malformation-I (ACM-I) remains controversial. This study assessed their anesthetic management and reported anesthetic complications during hospitalization for delivery.MethodsThis was a multicenter, retrospective, cohort study of patients with ACM-I undergoing vaginal or cesarean delivery. Data were obtained from the electronic databases of four United States academic institutions using International Classification of Diseases (ICD) codes from 2007–2017 at three sites and 2004–2017 at one site. The primary outcome was anesthetic complications.ResultsData were analyzed for 185 deliveries in 148 patients. Diagnosis of ACM-I was made prior to delivery in 147 (80%) cases. Pre-delivery neurosurgical consultation for management of ACM-I was performed in 53 (36%) patients. Pre-existing symptoms were recorded for 89 (48%) of the deliveries. Vaginal deliveries occurred in 80 (43%) cases, and 62 women (78%) received neuraxial labor analgesia. Cesarean delivery was performed in 105 (57%) cases, of which 70 women (67%) had neuraxial anesthesia and 34 (32%) received general anesthesia. Post-dural puncture headache was reported in three (2%) patients who had neuraxial anesthesia, and in two (12%) patients with syringomyelia. There was one (3%) reported case of aspiration pneumonia with general anesthesia.ConclusionsThe findings suggest that anesthetic complications occur infrequently in patients with ACM-I regardless of the anesthetic management. Although institutional preference in anesthetic and obstetric care appears to drive patient management, the findings suggest that an individualized approach has favorable outcomes in this population.     

What’s New in Obstetric Anesthesia: a focus on maternal morbidity and mortality

The Ostheimer lecture is given each year at the annual meeting of the Society for Obstetric Anesthesia and Perinatology. It summarizes “What’s New in Obstetric Anesthesia” based on a systematic evaluation of the relevant literature published in the previous calendar year. In this review I consider studies published in 2016 focused on the prevalence of, and risk factors for, maternal morbidity and mortality. I also discuss novel therapeutic approaches to the prevention and treatment of major sources of maternal morbidity and mortality.     

麻醉深度对开颅手术患者术后早期认知功能的影响

目的探讨麻醉深度对开颅手术患者术后早期认知功能的影响。方法选择2018年6月—2019年6月在北票市中心医院接受开颅手术的患者90例,随机分为浅麻醉组和深麻醉组各45例。比较两组手术前后不同时间点平均动脉压和心率变化情况。以简易智能量表评价并比较两组手术前后不同时间点的认知功能。结果两组手术前后不同时间点平均动脉压和心率差异无统计学意义(P>0.05)。两组术后第1天和第3天简易智能量表评分差异有统计学意义(P<005),术后第7天简易智能量表评分差异无统计学意义(P>0.05)。结论对于行开颅手术的患者,在保证安全的前提下进一步增加麻醉深度,并不会影响血流动力学的稳定性,而且有利于患者术后早期认知功能的恢复。