1.Anesthetic management during high intensity focused ultrasound for liver cancer
Shaoyang CHEN ; Hanfei SANG ; Lize XIONG
Chinese Journal of Minimally Invasive Surgery 2005;0(10):-
Objective To explore the anesthetic management during high intensity focused ultrasound(HIFU) for liver cancer. Methods A total of 21 patients underwent combined intravenous and inhaled general anesthesia.The anesthesia was induced by the administration of propofol,midazolam,fentanyl,and vecuronium.Endotracheal intubation was performed for mechanical ventilation.The anesthesia was maintained with inhalation of isoflurane or enflurane combined with additional administration of fentanyl,propofol,and vecuronium.Optimal analgesia and muscular relaxation condition were maintained and the hemodynamic parameters and body temperature were kept stable during the operation.Results All the 21 patients were successfully treated with HIFU under general anesthesia.A deepen anesthesia was required to depress stimulus responses while HIFU treatment in 2 patients.The duration of operation was 245~423 min(329?48 min),the time to recovery from the anesthesia was 7~18 min(11?3 min),and the time to extubation was 9~24 min(15?4 min).A small amount of pleural effusion was observed after operation in 1 patient and spontaneously disappeared after 2 weeks.Conclusions Combined intravenous and inhaled general anesthesia is a safe and effective anesthetic method for HIFU treatment for liver cancer.
2.Anesthesia and perioperative management for simultaneous liver-kidney-pancreas transplantation: a report of one case
Shaoyang CHEN ; Huang NIE ; Lize XIONG
Medical Journal of Chinese People's Liberation Army 2001;0(11):-
Objective To evaluate the anesthesia and perioperative treatment for simultaneous liver-kidney-pancreas transplantation. Methods The preoperative preparation included improvement of the hepatic function, alleviation of uremia and control of blood glucose level. General anesthesia was employed and maintained with isoflurane combined with intermittent intravenous administration of midazolam, fentanyl and vecuronium. Dopamine and low dose of epinephrine were used to maintain arterial blood pressure if necessary. The parameters of blood coagulation, the indexes of hepatic and renal function, blood glucose and amylase levels in blood and urine were surveyed regularly. The treatment was adjusted according to the results of tests mentioned above. Results The circulation was stable and blood gas was normal in the course of surgery. The concentration of blood glucose was higher at the end of the operation than that of pre-operation. Normal hepatic and pancreatic function was achieved about a week after operation, while the renal function showed no satisfactory improvement. The patient was given hemodialysis until the second transplantation of kidney. Three days later, the renal function recovered to normal. Up to the present, all the grafted organs showed good function. Conclusion Appropriate preoperative preparation, optimal anesthetic procedure and management, perfect protection of function of multiple organs, and maintenance of stable hemodynamics and homeostasis were the key points of successful anesthesia and management for simultaneous liver-kidney-pancreas transplantation.
3.Effects of different analgesic methods on neuroendocrine and cytokines
Shaoyang CHEN ; Yingmin ZHANG ; Liang LIANG
Chinese Journal of Anesthesiology 1996;0(09):-
Objective To observe the influences of different analgesic methods on blood sugar, stress hormones and cytokinesMethods According to different postoperative analgesic methods, 30 patients immediately after elective cholecystectomy, were randomly divided into four groups: normal saline was infused epidurally in group C as control; analgesia via epidural infusion of morphine 2 mg in group EM; patient-controlled analgesia via epidural or intravenous fentanyl in group PCEFA or group PCIFABlood sugar, cortisol, insulin, interlukin-2 (IL-2), interlukin-6 (IL-6) and tumor necrosis factor-?(TNF-?) levels were determined during the perioperative periodResults Postoperative visual analog score was higher in group C than that in group EM, group PCEFA or group PCIFA (P005)Conclusions Postoperative application of PCEFA can much more help to maintain the stability of neuroimmunoendocrinal system
4.The protective and therapeutic effect of tetramethylpyrazine against spinal cord ischemic injury in rabbits
Qiang WANG ; Lize XIONG ; Shaoyang CHEN
Chinese Journal of Anesthesiology 1994;0(03):-
Objective To investigate the effect of tetramethylpyrazine(TMP), a traditional Chinese herbal medicine, on the neural injury caused by spinal cord ischemia and reperfusion in rabbit.Methods Twenty-two male New Zealand white rabbits were anesthetized with isoflurane. Spinal cord ischemia was induced by 20min by infra-renal aortic occlusion. Animals were randomly allocated to 3 groups. Group C received no pharmacologic intervention. Group P and T received 30 mg?kg -1 TMP infused iv at a constant rate over 30min before aortic crossclamping(prevention) and after reperfusion(therapeutic) respectively. Neurologic deficit was assessed at 4, 8, 12, 24 and 48h after reperfusion using neurologic dificit score(NDS 4 = normal, 0 = paraplegia) . The animals were sacrificed at 48h after reperfusion and spinal cords (L 5-7) were removed immediately for histopathologic study.Results All animals survived the experiment. The NDSs at each observation interval were significantly higher in group P and T than those in group C (P
5.The evaluation of individualized fluid therapy in the elderly patients with coronary heart disease undergoing gastrointestinal surgery
Yunchuan WANG ; Zhong WANG ; Caihong CHEN ; Shaoyang CHEN
Chinese Journal of Postgraduates of Medicine 2013;36(32):1-5
Objective To evaluate the individualized fluid therapy in the elderly patients with coronary heart disease undergoing gastrointestinal surgery.Methods From January 2009 to December 2012,80 cases of coronary heart disease patients (aged 65-80 years) undergoing gastrointestinal surgery were divided into test group and control group by random digits table with 40 cases each.Traditional fluid therapy was used in control group in the intraoperative and postoperative period.Individualized fluid therapy was used in test group in the intraoperative and postoperative transferred to the intensive care unit (ICU) during the period of 24 h:in cardiac index (CI),stroke output index,stroke variation degree,under the guidance of indicators such as capacity titration type treatment.Hemodynamic index,fluid intake,incidence of cardiac adverse events and recovery of gastrointestinal function were compared in two groups into the operating room (T1),after anesthesia induction (T2),the operation started (T3),intraoperative 1 h (T4),the end of surgery (T5),transferred to the ICU 6 h (T6),transferred to the ICU 12 h (T7) and transferred to the ICU 24 h (T8).Results Compared with T1,two groups of patients with mean arterial pressure (MAP),central venous pressure (CVP),CI and stroke volume (SV) were lower than those at T2 [test group:(68.1 ±6.1) mm Hg(1 mm Hg =0.133 kPa) vs.(84.4 ±5.2) mm Hg,(5.5 ±0.8) cm H2O(1 cm H2O =0.098 kPa) vs.(6.2 ± 1.0) cm H2O,(2.8 ± 1.6) L/(min·m2) vs.(3.3 ± 0.8) L/(min·m2),(65.7 ± 4.5) ml vs.(74.3 ± 7.5) ml;control group:(65.4 ± 7.3) mm Hg vs.(85.1 ± 6.6) mm Hg,(4.6 ± 0.8) cm H2O vs.(6.4± 1.1) cm H2O,(2.7 ±0.7) L/(min·m2) vs.(3.3 ±0.6) L/(min·m2),(60.6 ± 7.6) ml vs.(73.8 ±7.5)ml],stroke variation degree (SVV) was significantly increased [test group:(15.9 ±5.1)% vs.(12.1 ±5.9)%; control group:(15.8 ± 9.4)% vs.(12.6 ± 8.4)%],there was significant difference (P < 0.05).Compared with the same time of control group,MAP was higher at T3,CI was higher at T4 and T5,SV was higher at T2-T7,there was significant difference (P< 0.05).The total transfusion amount,crystal usage and urine in intraoperative and transferred to the ICU 24 h in test group were less than those in control group,while colloid usage was more than that in control group,there was significant difference (P < 0.05).The incidence of cardiac adverse events between two groups had no significant difference (P =0.232).The postoperative ICU stay time,exhaust time,defecation time,into the liquid diets time and hospital stay in test group were less than those in control group [(37 ± 13) h vs.(55 ± 25) h,(72 ± 12) h vs.(99 ± 13) h,(92 ± 16) h vs.(113 ± 16) h,(4.0 ±0.8) d vs.(4.9 ± 1.9) d,(17 ±4) d vs.(27 ±5) d],there was significant difference (P < 0.05 or < 0.01).Conclusion In the elderly patients with coronary heart disease undergoing gastrointestinal surgery,individualized fluid therapy can effectively decrease adverse cardiac events,improve postoperative gastrointestinal function,and reduce length of hospital stay.
6.Neuroprotective effect of repeated WIN 55,212-2 preconditioning on focal cerebral ischemia-reperfusion injury in rats
Ye CHEN ; Tian LAN ; Zhilong GENG ; Shaoyang CHEN
Medical Journal of Chinese People's Liberation Army 1982;0(01):-
Objective To explore the neuroprotective effect of repeated preconditioning with cannabinoid receptor agonist WIN 55,212-2 on focal cerebral ischemia-reperfusion injury in rats.Methods Focal cerebral ischemia was induced by middle cerebral artery occlusion(MCAO)for 120min.Fifty male SD rats were randomly assigned to five groups(10 each):rats in control group and dimethyl sulphoxide group(DMSO group)were intraperitoneally administered 0.3ml normal saline and 0.3ml DMSO once a day for 5 days.Rats in WIN 55,212-2 preconditioning groups(including WIN1,WIN3 and WIN5 group)received intraperitoneal injection of 1mg/kg WIN 55,212-2(dissolved with 0.3ml DMSO)once a day for 1d,3d and 5d,respectively.All animals underwent MCAO operation 24h after last pretreatment to reproduce temporal(120min)focal cerebral ischemia model.The neurological function score(NFS)was evaluated at 24,48 and 72h after reperfusion.Brain infarct was identified with 2% 2,3,5-triphenyltetrazolium chloride(TTC)staining 72h after reperfusion,and the brain infarct volume was expressed as percentage of normal cerebral hemisphere volume.Results The NFSs of rats in WIN 55,212-2 preconditioning groups(WIN1,WIN3 and WIN5 group)were significantly higher,and the infarct volumes were significantly smaller than that in control group and DMSO group at 24h,48h and 72h after reperfusion(P0.05).Conclusion The neuroprotective effect of repeated preconditioning with cannabinoid receptor agonist WIN 55,212-2 may be enhanced by increased time of pretreatment.
7.Effect of yangyintongnao granule on blood pressure and heart rate in anesthetized dog
Shaoyang CHEN ; Xiaoling ZHU ; Lize XIONG ; Xiaoxing ZHU ; Qibing MEI
Chinese Journal of Tissue Engineering Research 2005;9(19):226-228
BACKGROUND: How to choose traditional Chinese remedy to treat cerebrovascular disease, not only improving the brain blood supply but also not affecting the blood pressure and heart rate, has been a promising research.OBJECTIVE: To study the role of yangyintongnao granule on average blood pressure and heart rate in anaesthetized dog.DESIGN: Complete grouping design and randomized controlled study based on hybrid dog.SETTING: Department of Anesthesiology, Xijing Hospital, Fourth Military Medical University of Chinese PLA and Department of Pharmacology, Faculty of Preclinical Medicine, Fourth Military Medical University of Chinese PLA MATERIALS: The experiment had finished by Cardiovascular Laboratory of Physiology Department in the Fourth Military Medical University of Chinese PLA from March to June 2003. Totally 23 healthy hybrid dogs in either sex were selected. These dogs were divided randomly into 4 groups: high dose group of yangyintongnao( n = 8), moderate dose group of yangyintongnao ( n = 6), low dose group of yangyintongnao( n = 5) and saline group( n = 4).METHODS: Anesthetic dogs in high, moderate and low dose group of yangyintongnao granule were given different doses of yangyintongnao granule: 2 g/kg, 1 g/kg and 0. 5 g/kg respectively. All doses of drug were calculated based on the body mass of dogs, and the drugs were dissolved in 100 mL saline and given through the gastric canal. Dogs in saline group were perfused with equal saline. Aortic average blood pressure was measured by femoral artery intubation via a piezometric transducer. Heart rate was obtained from R-R intervals of a standard Ⅱ lead of electrocardiograph(ECG). The mean blood pressure and heart rate were recorded 0. 5, 1, 1.5, 2.0,3.0, 4. 0, 5.0, 6. 0 hours after treatment.MEAN OUTCOME MEASURES: The changes of blood pressure and heart rate at different time before and after medication.RESULTS: Totally 29 dogs were brought into the final analysis. Blood pressure: The mean blood pressure was reduced -5.4% to -6. 2% respectively in high dose group and moderate dose group after treatment. But in low dose group the average blood pressure sometimes increased sometimes decreased, mainly decreased. It increased by 6.6% ( P > 0. 05) and decreased by -4. 1% ( P > 0.05) at maximum. The average blood pressure in saline group changed by - 9.6% ( P > 0.05). Heart rate: The heart rate in high and medium dose group gradually reduced as time went on. It reduced by - 4. 4%, - 12.2% and - 9.5% respectively in high, moderate and low doses group. The change in each group was not statistically significant as the same in saline group( P > 0.05).CONCLUSION: Yangyintongnao granule has no significant influence on average blood pressure and heart rate.
8.Practice of the Standardized Training for Residents
Zhenghua ZHU ; Xiaoling ZHU ; Shaoyang CHEN ; Lize XIONG
Chinese Journal of Medical Education Research 2006;0(09):-
The standardized training for residents is the key point of medical education and clinical level enhancement.The future clinicians not only must have the solid specialized knowledge,but also should have the rich humanities and the social sciences knowledge,good interpersonal communication ability,as well as lofty occupational ethics.Therefore,how to train residents to be rich in both the spirit of science and humanity and the knowledge of science and humanity,has become an important topic in the clinical medicine education.
9.Clinical application of high-frequency oscillatory ventilation for the treatment of neonatal pneumothorax.
Dan CHEN ; Xi-Lin HUANG ; Xiao-Ping LI
Chinese Journal of Contemporary Pediatrics 2012;14(7):499-501
OBJECTIVETo evaluate the clinical effect of high-frequency oscillatory ventilation (HFOV) for the treatment of neonatal pneumothorax.
METHODSRetrospective analysis was performed on the clinical data of 23 neonates with pneumothorax who received HFOV from January 2007 to June 2011. Of the 23 cases, 19 cases were treated by HFOV as soon as they were diagnosed with pneumothorax, and 4 cases were treated by HFOV after the occurrence of pneumothorax during conventional mechanical ventilation (CMV) or continuous positive airway pressure (CPAP) ventilation. Another 23 neonates with pneumothorax who received CMV in the same period were selected as controls. The HFOV group and control group were compared with respect to oxygenation index (OI) and arterial/alveolar oxygen tension ratio (a/APO(2)) before and after 1, 12, 24, and 48 hours of ventilation as well as mechanical ventilation time, gas absorption time, complication, and prognosis.
RESULTSBoth groups showed significantly decreased OI and significantly increased a/APO(2) after ventilation (P<0.05). Compared with the control group, the HFOV group had significantly lower OI and significantly higher a/APO(2) after 1, 12, 24, and 48 hours of ventilation (P<0.05). Mechanical ventilation and gas absorption times were significantly shorter in the HFOV group than in the control group (P<0.05). Twenty-two cases were cured in the HFOV group and 21 in the control group. Each group included one case of ventilator-associated pneumonia that was later cured with antibiotics.
CONCLUSIONSCompared with CMV, HFOV performs better in improving the pulmonary oxygenation function of neonates with pneumothorax and can shorten both mechanical ventilation time and gas absorption time without increasing the incidence of adverse effects.
Female ; High-Frequency Ventilation ; adverse effects ; Humans ; Infant, Newborn ; Male ; Oxygen ; blood ; Pneumothorax ; blood ; therapy ; Retrospective Studies
10. Composite external fixation for children with fracture of lower extremity metaphysis
Yan SUN ; Li XIAO ; Zhifeng CHEN ; Yinhe QIN ; Guangkai XIONG
Chinese Journal of Orthopaedic Trauma 2019;21(12):1077-1080
Objective:
To evaluate the composite external fixation in the treatment of children with fracture of lower extremity metaphysis.
Methods:
A retrospective analysis was conducted of the 42 children with fracture of lower extremity metaphysis who had been admitted to Zhengda Shaoyang Orthopaedic Hospital between September 2016 and September 2018. They were 24 boys and 18 girls, aged from 3 to 14 years (mean, 8.3 years). Open injury occurred in 10 cases, with type Ⅰ in 2, type Ⅱ in 7 and type Ⅲ in one according to the Gustilo-Anderson classification, and closed injury in the other 32 ones. The fracture happened at distal femur in 12, at proximal tibia in 9 and at distal tibia in 21 cases. All the patients were fixated with composite external brackets. Fracture healing, functional recovery of the knee and ankle joints, and complications were recorded.
Results:
All the 42 patients were followed up for 12 to 18 months (mean, 15.8 months). All fractures healed well by the first intention with no malunion or no alignment change on the full length X-ray films of both lower limbs. Irritant growth within 1.5 cm was observed in 2 cases. No loosening occurred in the external fixation which was removed 3 to 5 months after surgery (mean, 3.8 months). Functional recovery of the knee and ankle joints was good at the last follow-up. For the patients with distal femoral metaphysis fracture, the knee function by the Merchan scoring was excellent in 3 cases, good in 7 cases, fair in one and poor in one; for the patients with proximal tibial metaphysis fracture, the knee function by the Merchan scoring was excellent in 3, good in 4 and fair in 2 cases; for the patients with distal tibial metaphysis fracture, the ankle function by the Kofoed scoring was excellent in 11, good in 7 and fair in 3 cases, giving an excellent and good rate of 83.3%. Of a total of 228 needle channels in the 42 patients, 58 were infected mildly or moderately, giving an infection rate of 25.4%. All the infections responded to active dressing change.
Conclusion
The composite external fixation brackets are a good choice for the treatment of children with fracture of lower extremity metaphysis, because they are easy in manipulation and stable in configuration, and can reduce the iatrogenic injury to the epiphyseal plate, spare cross-articular fixation and allow early functional exercise.