ObjectiveTo detect 5-FU concentration and investigate the changes of pathology， and Ki-67 protein expression after intraoperative regional chemotherapy (RC) for colon cancer. MethodsAll the patients were randomized into two groups: RC group (n=20), received intraoperational RC with 100 ml physiological saline contained 5-FU (15 mg/kg) and camptothecine (0.06 mg/kg)； control group (n=20), saline alone. The samples from portal vein blood, peripheral blood, peritoneal fluid， and peri-cancerous tissues in RC group were taken to detect the 5-FU concentration by high performance liquid chromatography (HPLC), respectively at 2, 5, 10, 20, 30, and 60 minutes after treatment. The pathological changes were observed and Ki-67 protein expressions were examined by immunohistochemical staining for all the cancer tissues postoperatively in two groups. ResultsPeak concentration of 5-FU appeared at 2 min after treatment, and decreased gradually. 5-FU concentration in peritoneal fluid was the highest, and the lowest in the peripheral blood (Plt;0.01). In RC group， light karyopyknosis, nuclear swelling, and coagulative necrosis of cancer cells, and light intercellular substance hydropsia, inflammatory cells invasion were observed under light microscopic examination; light vasculitis presented also in five cases. Nuclear swelling, heterochromatin agglutination, perinuclear gap expansion, mitochondrial swelling, endoplasmic reticulum expansion, and Golgi complex expansion were observed with transmission electron microscope. Ki-67 protein expression of colon cance tissues in RC group was lower than that in control group （Plt;0.05）. Conclusions Intraoperative RC for colon cancer may sustain a high concentration of chemotherapy drugs in peritoneal fluid and portal vein blood, and alter histopathological morphology of cancer cells, and suppress Ki-67 protein expression. So, intraoperative RC may play an important role in preventing intraoperative spreading and postoperative recurrence of colon cancer.
Visual evoked potential (VEP) is a commonly used technique in neurology and ophthalmology in the process of disease diagnosis and treatment, which refers to the electrical signal transmitted by the visual pathway and recorded in the skull or cortex after stimulating the retina. The effect of monitoring and protection of vision in surgery near the visual pathway has attracted more and more attention recently. This article summarizes the experience and problems of intraoperative monitoring of VEP in terms of anesthesiology and instrument development, monitoring technology, and application innovation, and proposes future research directions. The purpose is to provide a reference for clinical application and research of intraoperative VEP monitoring.
ObjectiveTo observe the histopathological changes in peripheral retinal lesions under intraoperative optical coherence tomography (iOCT). Methods A retrospective case series study. Eighty-eight patients (194 eyes) who underwent vitreoretinal surgery in the Department of Ophthalmology at the East Ward of the First Affiliated Hospital of Zhengzhou University from October 2021 to May 2022 in 94 eyes were included in the study. Among them, 49 cases were male and 39 cases were female, with the mean age of (50.93±17.55) years. Ninety-four eyes included 32 eyes with retinal detachment, 6 eyes with proliferative diabetic retinopathy, 28 eyes with vitreous hemorrhage, 8 eyes with ocular trauma, 14 eyes with the macular lesion, 1 eye with uveitis, 1 eye with family exudative vitreoretinopathy (FEVR), 1 eye with acute retinal necrosis (ARN), and 3 eyes with lens dislocation. All affected eyes were examined with iOCT during vitreoretinal surgery. The iOCT scanning of the peripheral retina was performed with the help of episcleral pressure. The pre-equatorial and serrated edge anterior and posterior of retinas were scanned according to the characteristics of different fundus diseases. Various abnormal fundus manifestations were recorded. Results In 94 eyes, 53 eyes (56.38%, 53/94) have different types of retinopathy in the peripheral retina. Of these, 7 eyes (7.45%) have retinal cystoid degeneration; 19 eyes (20.21%) have lattice degeneration; and 8 eyes (8.51%) have pigment degeneration; 9 eyes (9.57%) have pavement-like degeneration; 7 eyes (7.45%) have small occult holes; 1 eye (1.06%) has familial exudative vitreoretinopathy (FEVR) serrated edge "dyke-like" proliferative degeneration; 4 eyes (4.26%) have vitreous and retinopathy adhesions; and one eye (1.06%) has ARN. Conclusion With clear refractive media, iOCT can provide clear scans of different peripheral retinal lesions.
目的 探讨躯体感觉诱发电位（SEP）在颈脊髓损伤术前、术中监测的意义。 方法 纳入2010年1月－2012年4月治疗的241例颈脊髓损伤患者，术前按美国脊柱脊髓损伤协会（ASIA）评分并分级，确定损伤平面。术前与术中SEP监测，分析不同损伤分级以及不同损伤平面术前的波幅及潜伏期的差异，术中SEP监测以波幅下降＞50%和或潜伏期延长＞10%为预警标准。 结果 各损伤分级组术前SEP监测：A级组SEP波消失，呈一直线，而B、C、D、E级组均测出SEP波形，根据是否可测出SEP波形，可将A级与B、C、D、E及组区别。B、C、D级组之间波幅和潜伏期均无统计学意义（P＞0.05）。E级组较B、C、D级组波幅增高、潜伏期缩短，差异有统计学意义（P＜0.05）；不完全性颈脊髓损伤组内不同损伤平面组之间波幅和潜伏期差异均无统计学意义（P＞0.05）。术中SEP对脊髓功能损伤监测的灵敏度83.3%、特异度98.7%。其中术中：SEP阳性8例，真阳性5例，4例术者处理后波幅及潜伏期回复至正常范围，术后无新的神经功能损伤，另1例术者采取各种处理后波幅及潜伏期无恢复，术后神经功能损伤较术前加重；假阳性3例，1例麻醉师给予升高血压后波形恢复至正常，另2例经麻醉师调整麻醉深度后波形恢复正常，此3例术后无新的神经功能损伤。SEP阴性233例，真阴性232例，术后无新的神经功能损伤；假阴性1例，患者术中、术后波形未见异常，术后运动功能损伤程度较术前加重。 结论 ① SEP能准确评估完全性和不完性颈脊髓损伤，但对不完全性颈脊髓损伤的损伤程度不能作出准确评估、也不能区分颈脊髓损伤的损伤平面；② 术中SEP监测能较好地反映颈脊髓功能完整性，对减少颈脊髓损伤术中发生医源性颈脊髓损伤风险具有重要意义。
ObjectiveTo investigate the influencing factor of intraoperative hypothermia during laparotomy.MethodsA total of 81 patients underwent laparotomy in our hospital from October 1, 2018 to January 1, 2019 were enrolled. The difference of preoperative baseline data and surgical data between the hypothermia and non-hypothermia groups was compared, and the influencing factor of intraoperative hypothermia during laparotomy was explored.ResultsOf the 81 patients, 32 patients occurred hypothermia during operation. There were no significant differences in gender, age, BMI, HGB, WBC count, PLT count, TB, AST, ALT, ALB, PT, operation time, postoperative hospital stay, and Clavien-Dindo grade between the hypothermia group and the non-hypothermia group (P>0.05), but there were significant differences in intraoperative infusion volume, intraoperative blood loss, and surgical mode (P<0.05). The intraoperative infusion volume and intraoperative blood loss in the hypothermia group were higher than those in the non-hypothermia operation group, and the proportion of hepatectomy was higher than that in the non-hypothermia group. The multivariate analysis show that the intraoperative blood loss, intraoperative infusion volume, and kind of operation were the risk factors for the hypothermia during laparotomy (P<0.05).ConclusionsIntraoperative hypothermia is related to intraoperative bleeding volume, intraoperative fluid infusion volume, and the kind of operation. Therefore, for patients with less bleeding, the intraoperative hypothermia can be reduced by limiting the volume of intraoperative fluid infusion. For those patients with more intraoperative bleeding, warming fluid infusion may reduce the incidence of intraoperative hypothermia.
目的 探讨纤维胆道镜在胆道探查术中及术后的应用价值。方法 对113例在胆道探查术中及术后应用纤维胆道镜治疗患者的疗效进行回顾性分析。结果 23例胆总管扩张合并黄疸且术前未见结石的患者，其中19例术中胆道镜发现结石并于术中取净结石，2例炎性狭窄，1例胆管癌，1例未见异常。58例胆总管结石患者术中胆道镜取净结石。32例肝内、外胆管结石患者术中胆道镜取净结石21例; 2例胆道镜发现结石集中于肝左外叶合并肝内胆管狭窄, 行肝左外叶切除; 其余9例患者的结石术中未取净，于术后6～8周再经胆道镜T管窦道取净结石。113例患者术后均无严重并发症发生。术后获随访98例（86.7%），随访时间6～24个月，平均14个月，2例复发，其余96例未见结石复发。结论术中应用纤维胆道镜可明确胆管内病变，降低胆管残余结石的发生率; 术后经T管窦道取石是治疗胆管残余结石的有效方法，可避免再次手术的痛苦。
Objective To determine the independent influencing factors of intraoperative choking during painless gastrointestinal endoscopy (PGIE) after coronavirus disease 2019 (COVID-19). Methods The data of patients undergoing PGIE with COVID-19 in Northern Jiangsu People’s Hospital between December 2022 and April 2023 were retrospectively collected. Multiple logistic regression analysis was used to screen the influencing factors of intraoperative coughing events that occurred during the diagnosis and treatment process. Results A total of 948 patients were included, with 93 (9.8%) cases of choking. The results of the multiple logistic regression analysis showed that smoking and unresolved cough were independent risk factors for coughing (P<0.05), while colonoscopy and infection duration beyond 14 days between diagnosis and treatment were independent protective factors for coughing (P<0.05). ConclusionsWhen patients with COVID-19 undergoing PGIE, special attention should be paid to high-risk groups such as smoking and unresolved cough. It is necessary to strengthen intraoperative monitoring and implementation of prevention and control measures to reduce the incidence of coughing and improve the safety of diagnosis and treatment for patients.
ObjectiveTo investigate the role of intraoperative frozen section pathology in central lymph node metastasis of papillary thyroid microcarcinoma (PTMC), and to analyze the risk factors of central lymph node metastasis.MethodsClinical data of 481 patients diagnosed with PTMC from January 2015 to June 2019 in our hospital were included. The consistency of frozen pathological results of intraoperative prelaryngeal lymph nodes, pretracheal lymph nodes, and paratracheal lymph nodes with postoperative paraffin pathological results, as well as the relationship between the numbers of intraoperative lymph nodes sent for examination and postoperative pathological results were analyzed. Then the Kappa value were calculated respectively. Furthermore, univariate and multivariate analysis were used to analyze the factors affecting central lymph node metastasis.ResultsCentral lymph node metastasis was found in 207 patients with PTMC (43.0%). Of the 207 patients, 192 patients were examined by frozen section, with 139 patients had positive results. The Kappa value of prelaryngeal lymph nodes, paratracheal lymph nodes, pretracheal lymph nodes, and central lymph nodes were 0.300, 0.643, 0.560, and 0.755, respectively (P<0.001). Simultaneous intraoperative examination of three anatomic lymph nodes in the central region has a high accuracy in evaluating whether there was lymph node metastasis. The consistency test between intraoperative frozen and postoperative paraffin pathological results showed that when the number of lymph nodes was less than 5, the Kappa value was 0.690 (P<0.001), and when more than or equal to 5, the Kappa value was 0.816 (P<0.001). The results of logistic regression showed that, maximum value of tumor diameter, tumor number, and thyroid capsule involvement were risk factors for central region lymph node metastasis in PTMC (P<0.05).ConclusionsCentral region lymph node metastasis in PTMC was common. Prelaryngeal lymph nodes, pretracheal lymph nodes, and paratracheal lymph nodes should be selected for frozen pathological examination during the operation, which could effectively indicate whether the central lymph nodes were involved. And combined with the risk factors of lymph node metastasis, such as maximum value of tumor diameter, number of tumors, and thyroid capsule involvement, a more accurate individualized operation plan can be designed for patients.